Creating Your Job File

In

POWER ANALYTICS CORPORATION

10805 Rancho Bernardo, Suite 270

San Diego, CA 92127

U.S.A.

Copyright 2012

All Rights Reserved

October 2012

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Table of Contents Page

1.0 Creating a Job File Subject Network ............................................................... 3

2.0 Creating the New Drawing File............................................................................ 4

2.1 Setting the Master File Editor ................................................................................................................. .7

2.2 Auto-Snap Control Management........................................................................................................... .13

2.3 Building the Single Line Diagram ......................................................................................................... .14

2.4 The Bus Counter Function .................................................................................................................... .26

2.5 The Generator Short Circuit Model ...................................................................................................... .27

2.6 Checking for Errors in the Network ...................................................................................................... .28

2.7 Adding Operating Scenarios to the Network ......................................................................................... .29

2.8 The Data Structure Analyzer ................................................................................................................. .34

3.0 Text Back Annotation ........................................................................................ 35

4.0 Color Back Annotation ...................................................................................... 36

5.0 Copying and Pasting Network Components.................................................... 37

6.0 Locking and Unlocking a Page ......................................................................... 39

7.0 The Make-Straight Function .......................................................................... 40

8.0 Managing DesignBase Catalogs ....................................................................... 41

8.1 Opening & Closing DesignBase Catalogs ............................................................................................ .42

8.2 Creating & Saving Catalogs ................................................................................................................. .43

8.3 Assigning Icons to Catalogs .................................................................................................................. .44

8.4 The Complex Components Catalog .................................................................................................. .45

9.0 Hyperlinks to the External Files, Applications and the World Wide Web...... 47

10.0 Multiple Page Files with Hyperlinks.................................................................. 49

11.0 Creating DesignBase Projects / Multiple Hyperlinked Drawing Files ............ 54

12.0 Locating Symbols in a Project .......................................................................... 58

13.0 The Project Manager .......................................................................................... 60

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14.0 The Database / Text Editor ................................................................................ 61

15.0 MCC & Panel Auto-Links ................................................................................... 62

16.0 Panel & MCC Schedules .................................................................................... 64

17.0 Automatic Transfer Switches ............................................................................ 70

18.0 Project Version Control ..................................................................................... 71

19.0 Security Administration Commands ................................................................ 74

19.1 User Maintenance ............................................................................................................................. .....75

19.2 Access Control Maintenance................................................................................................................. .77

19.3 Access to Protected Files ...................................................................................................................... .79

19.4 Changing Protection Settings................................................................................................................ .80

19.5 Revision Control...................................................................................................................... ...............81

20.0 Creating and Managing Project Libraries ........................................................ 85

21.0 Creating UPS Models ......................................................................................... 91

21.1 Using the Complex Components UPS Model ........................................................................................ .95

22.0 Creating Rectifier and Inverter Models............................................................. 96

22.1 Modeling Rectifiers ............................................................................................................................. ...96

22.2 Modeling Inverters ............................................................................................................................. ....99

22.3 Using the Complex Component Inverter and Rectifier Models............................................................102

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1.0 Creating a Job File Subject Network

This document will illustrate how to create, modify and customize a single line diagram using DesignBase 5.0 graphical user interface. The system shown below will be used as an example. As the actual step by step process is explained, the user will be simultaneously introduced to a critical application called the Master File Editor. This tool allows the user to control base-parameters and settings that are critical during the modeling and analytical process of the job file.

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2.0 Creating the New Drawing File

Step 1. Select New Drawing File.

Step 2. Select the EDSA tab and then select the Electrical One-Line AC 3Phase.axt template. Click OK.

Step 3. Name the file as indicated, and select Open.

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Step 4. If required, assign a password and

select OK.

Step 5. Click ok after filling the master file General information.

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ANSI Element Catalog Section.

Step 6. The blank ANSI B sheet is shown here with border and default title block.

ANSI Bus Cat.

Callout Catalog. Hyperlink Catalog. ANSI Branch Cat.

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2.1 Setting the Master File Editor

Step 1. Select this icon to invoke the Master File Editor.

Step 2. Select the General tab, and complete the information pertaining to the job file under study.

Step 3. Select the Network Settings tab.

Step 4. Specify all the required base kVA, units and temperature parameters for the study.

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Step 5.

Select the AC Visibility tab.

Step 6. Based on the studies that are required, select the specific fields that need to be displayed in the component editor-screens. In this case leave all fields de-selected. Also, specify the electrical units to be used.

Step 7. Select the Visibility tab.

Step 8. Again leave all visibility fields un- selected. Select the standard for the symbols to be used (ANSI or IEC).

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Step 9. Select the Name Management tab.

Step 12. Define the operating scenarios as required. A detailed explanation of this function is available in further sections of this document.

Step 11. Select the Scenarios tab.

Step 9.

Select the Name Management tab.

Step 10. Specify how to construct the name of buses being copied and pasted from existing ones. In this case we have chosen to continue incrementing by 1.

Step 11.

Select the Scenarios tab.

Step 12. Define the operating scenarios as required. A detailed explanation of this function is available in further sections of this document.

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Step 18. Select the More Branch Defaults tab.

Step 13. Select the Bus Defaults tab.

Step 14. Define the default values of voltage, size and SCKVA for source and motor buses.

Step 15. Select the AC Branch Defaults tab.

Step 16. Define the default code and size for feeders and transformers.

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Step 17. Select the 3P Branch Defaults tab.

Step 18. Specify default codes/sizes for the remainder of the branch types as shown here.

Step 19. Select the Time Periods tab.

Step 20. If conducting a Voltage Profile load flow analysis, specify the number of time periods to be simulated in conjunction with their respective time duration.

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Step 21. Select the File Locations tab. This tab allows the user to change the default directories in which different functions of the DesignBase program are located.

Step 22. For example, to change the default directory for the project files, select the DesignBase Jobs item, and click Modify.

Step 23. Browse and select the new folder that will contain the project files, and select OK.

Step 24. The Project Library setting allows the user to select the default library database for cables, transformers, breakers, switches, fuses, etc. To set the default, simply press Browse and select the required default library.

Step 25. The File Browser setting allows the user to select the application with which the output reports will be presented. The default (blank) is the DesignBase standard file browser. For example, if MS Word is the browser of choice, press the Browse button, and select WINWORD.exe.

Step 26.

Select OK to accept the changes to the Master File Editor.

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2.2 Auto-Snap Control Management

Step 1. Select Tools>AutoSnap.

Step 2. The AutoSnap feature controls the way in which busses and branches connect to each other. Up to 10 different snap modes are available, depending on the users requirements. These modes are shown here.

Step 3. Since DesignBase is equipped with smart plug & socket technology, the basic and recommended snap modes are illustrated here. Press OK to accept.

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2.3 Building the Single Line Diagram

Step 2. Once in place, release the mouse button.

Step 1. From the ansibus catalog, select the Utility Bus symbol, by holding the left mouse button down and dragging it over to the desired location.

Back Annotation as defined

in the Master File Editor.

Back Annotation insertion point socket. This socket can be dragged and placed anywhere.

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Step 3. Double click on the utility symbol and enter the Bus name, basic Description, Short Circuit and Load Flow information as shown here.

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From-End smart plug. Step 4. Select the ansibra catalog.

Back Annotation insertion plug.

To-End smart plug.

Step 5. Select the ANSI Fuse 1 symbol and drag it over to the desired location. For now, place it as indicated without connecting it to the utility bus.

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Step 6. Hold and drag the fuse over to the utility bus. Make sure that the From-End of the branch (from plug) meets the desired connection point on the Bus (socket).

Step 7. Once the socket turns blue in color and the message Connect to Socket appears, the connection has been successfully achieved. Release the mouse button to complete the operation.

Once the fuse is connected to the live bus, it will turn black indicating that it has been energized.

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Step 8. Double click on the fuse symbol to edit its Branch name and electrical data.

Step 9. Click on the Library pick list to access the fuse database.

Step 10. Select the required ABB fuse from the library.

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Step 12. Verify the basic short circuit information for the fuse.

Step 11. Decline the offer to insert the Curve at this point.

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Step 13. Using the same steps described for connecting the fuse, add a transformer and connect it to the To-End socket of the fuse as shown here.

Step 14. Double click on the transformer to edit its electrical data.

Step 15. Click on the Library pick list to access the transformer database.

Step 16. From the library manager select the manufacturer and transformer needed.

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Step 17. Specify primary and secondary system/nameplate voltages. Click on the to voltage Distribute box.

Step 18. Verify/modify the impedance information.

Step 19. Select the primary and secondary winding configurations.

Step 20. Specify cooling type, tap settings, and impedance adjustment factors as required.

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Step 22. From the ansibus catalog, drag and drop the Busbar symbol over to this position.

Step 21. Following the same procedures illustrated above, add a 150 Amp breaker as shown here.

Step 23. Prior to adding branches to a Bus Bar, adjust its length to accommodate as many branches as required. To adjust the length of a Bus Bar, simply select it then click and drag the end sockets lengthwise as shown here. When the desired length is reached, release the mouse button.

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Step 24. To add the branch breakers, drag the required breaker symbols from the ansibra catalog and connect them at the desired position on the Bus Bar. Once the Connect message appears, release the mouse button to drop the symbol in that position.

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Step 25. Add a No. 4 AWG feeder from the ansibra catalog.

Step 26. Double click on the feeder, and

select the Library pick-list.

Step 28. Complete the Cable/Line Data editor as shown.

Step 27. Select the required feeder from the library. Press OK.

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Step 29. Add the 1250 HP Induction motor.

Step 30. Double click on the motor, and select the Library pick-list.

Step 32. Complete the Short Circuit and Load Flow editors as shown here.

Step 31. Select the required motor from the library. Press OK.

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2.4 The Bus Counter Function

Following similar steps as the ones described in this guide, complete the single line diagram as shown in the screen capture below. The completed file is called Project1; it is going to be used in the remainder of the tutorial and can be found in the DesignBase Samples folder under the UsersGuide folder. The total number of buses used in the file is shown in the Active Buses field. The bus counter shows how many nodes have been used in the project.

Notice that only active buses (sources, loads and busbars) are counted; nodes are not conted.

Bas Counter Window. Total Bus Count: 9

Package Bus Limit.

The next section will describe the generator short circuit model.

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2.5 The Generator Short Circuit Model

The impedances required by the editor are explained below and are entered as a percentage of the generators base voltage and kVA. The X/R ratio can be calculated from the generator time constant and armature resistance information if provided. This calculation is based on equation 1. If this information is not available, the user can select Estimate X/R ratio and the program will add a value based on accepted IEEE standard curves.

%XdV Rated-voltage (saturated) direct-axis sub-transient reactance. It is used for first-cycle and

interrupting time calculations.

%XdV Rated-voltage (saturated) direct-axis transient reactance. It is used for time delayed currents in relay applications.

Xd Rated current unsaturated direct-axis steady state reactance.

%X2V Rated-voltage negative sequence reactance. It is used to calculate the X/R ratio and for unbalance short circuit calculations.

%X0 Zero sequence reactance. It is used in unbalanced short-circuit calculation, when dealing with grounded generators.

Ta3 Rated-voltage generator armature time constant in seconds. It is used to calculate the X/R ratio.

In some cases, the armature resistance Ra may be given instead.

%Ra Armature resistance.

The X/R ratio is determined from the following equations:

R X2v

X 2 f T

(Equation No.1) EFF a3

2 f Ta3 R

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2.6 Checking for Errors in the Network

Once the network has been completed, click on the Error Checking icon. This will scan the database and point out any obvious modeling and connectivity errors.

Correct any errors as required and press Done to exit.

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2.7 Adding Operating Scenarios to the Network

Lets assume that there are two scenarios under which the network modeled can operate. These two scenarios will be called Normal Operation and Emergency Operation. The screen capture shown below, indicates the status of the network components that will be affected by the operating scenarios.

Normal: ON Emergency: OFF

Normal: CLOSED Emergency: OPEN

Normal: OFF Emergency: ON

Normal: CLOSED Emergency: OPEN

Normal: OPEN Emergency: CLOSED

Step 1. Click on Master File Editor.

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Step 2. Type Normal Operation here under scenario 1, and press the tab key to update the list.

Step 3. Select New to add the next scenario.

Step 4. Enter the second scenario number and name as indicated here. Press OK.

Step 5. Select scenario 1 as the Active scenario.

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Step 6. Double click on the utility bus to access its editor.

Step 7. Click the "Status" icon.

Step 8. Define the status of the utility source as indicated and click OK.

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Step 9. Repeat the steps 6- 8 on fuse and circuit breaker.

Step 10. Apply the reverse states for generator and its circuit breakers.

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Step 11. This pick list toggles between the two operating scenarios.

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2.8 The Data Structure Analyzer

Data Structure Analyzer examines consistency of your database and compares the database to your drawing file.

Step 1. To check for and to correct errors in your file, select the Data Structure Analyzer icon.

Step 2. If Devices are found in your database but not in your drawing select the Remove Devices from database that arent in Drawing button. Otherwise click ok.

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3.0 Text Back Annotation

Step 1. Select the text Back Annotation tool.

Step 2. Select the Auto-Refresh box to always refresh annotation on the drawing.

Step 4. Select the preferred font type and color. Select On and click OK to return to the single line diagram. Refer to page 1 of this tutorial for the fully back annotated network.

Step 3. From the Bus Input Data and the Branch Input Data tabs, select the items highlighted by the circles.

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4.0 Color Back Annotation

Step 1. Select the color Back Annotation tool.

Step 2. Turn the color Back Annotation on by selecting the On button.

Step 3. Select the category by which the color annotation will be applied. In this example, select Voltage Levels.

Step 4. Modify the color settings as required

and click OK to update.

The final product is shown here.

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5.0 Copying and Pasting Network Components

Step 1. Using the mouse, fence-in (select) the element(s) to be copied.

Step 2. Click the Copy command icon.

Step 3. Click the Paste command icon.

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Step 4. Once the selection has been pasted, click on it and drag it over to the desired location.

Step 5. Ensure that the from end of the breaker has been successfully connected to the bus bar. Verify that the Connect to Geometry message appears.

Also, Ctrl + C and Ctrl + V can be applied.

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6.0 Locking and Unlocking a Page

Locking the page helps avoid accidental movement and/or deletion of network symbols. When selected, the user can double click on any component in order to access its editor, without the risk of altering its graphical characteristics by mistake or otherwise. Unlocking restores full graphical editing capabilities.

Page-Lock Function. Page-Unlock Function.

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7.0 The Make-Straight Function

This function allows the user to straighten any branch to its original horizontal or vertical shape. In cases where feeders, breakers, or other types of branches have been twisted during the modeling process, this function will restore its original straight shape.

Step 1. Select the branch to be straightened-out by clicking on it once. In this case this breaker will be used as an example.

Step 2. Select Make-Straight icon.

The final result is shown here.

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8.0 Managing DesignBase Catalogs

Catalogs can be managed using the commands shown here.

New Catalog

Open Catalog

Save Catalog As

Close Catalog

To toggle the Catalog Manager in and out of sight, select View / Content Explorer or simply toggle the F8 key on your keyboard.

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8.1 Opening & Closing DesignBase Catalogs

Step 1.

Select Open Catalog.

Step 2. Select the DesignBase/Actrix/Solutions/EDSA folder to access all the available DesignBase catalogs. Once in the EDSA folder, select the dc.axc to open the DC tools catalog, and press Open.

Step 3.

The DC Tools catalog is shown here, ready to be used.

Step 5.

Select Close Catalog.

Step 4. To choose a catalog, select the catalog by clicking the appropriate tab. In this example select the DC Tools tab.

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8.2 Creating & Saving Catalogs

Step 1. Select New Catalog.

Step 2. Verify that a blank Catalog is added to the Manager.

Step 3. Populate the new Catalog with your own devices, by simply selecting them and dragging & dropping them into this space.

Step 4. To save the new catalog, select the catalogs tab and press the Save Catalog As icon.

Step 5. Assign a name and save the new catalog in the desired folder as indicated (DesignBase4/Actrix/Solutions/ EDSA). Click Save.

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8.3 Assigning Icons to Catalogs

Step 1. Right-Click on the Catalogs tab to be modified.

Step 2. Select Change Icon.

Step 3. From the Change Icon dialog box, browse to locate the desired icon. In this case, select the From File option as shown here.

Step 4. Select this icon.

Step 5. Select OK.

Step 6. The new icon is shown here. More icons can be found under C:\DesignBase4\Actrix\Solutions\EDSA

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8.4 The Complex Components Catalog

Lets assume that we wish to create a network symbol consisting of multiple interconnected devices (busses & branches). Such a symbol can be a substation block that may be used on a regular basis. This section will illustrate how to accomplish this task, such that this new symbol can be made available from a catalog menu.

Step 1. Lets assume that we wish to create a complex component out of the low voltage substation shown here.

Step 2. Open the Complex Components catalog by clicking on this icon.

Step 4. Fence in the components from which a symbol will be created. In this case, select the entire substation as indicated here.

Step 3. Verify that the Complex Components catalog has opened as shown here.

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Step 5. Drag and drop your selection into the Complex Components catalog space.

IMPORTANT NOTE

Complex symbols such as the one shown in the preceding example, will retain connectivity (both graphical and database) only when they are stored in the Complex Components catalog. Storing a complex symbol into any other catalog will not work.

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9.0 Hyperlinks to the External Files, Applications and the World Wide Web

DesignBase supports two types of hyperlinks. The first type allow the user to tie a network or a section of it to an external application, file, or to a specific internet site. This first type will be explained in this section. The second type of hyperlinks, allows the user to tie pages within a drawing file or within a project. This facilitates the navigation from one section of a single line diagram over to another electrically interconnected section that is located in a different page. This second type of hyperlinks will be explained in sections 10 and 11 of this manual.

In this example, the file will be hyperlinked to an Excel spreadsheet file. The same procedure can be used to hyperlink to any MS Windows executable file. To access a web site on the Internet, select URLs in step 5, and enter the web address.

Step 1. In this exercise, the transformer will be hyperlinked to its maintenance log file, which is kept in a Microsoft Excel format under C:\DesignBase5\Samples\UsersGuide. To begin, select the object (in this case the transformer) to which the hyperlink will be assigned.

Step 2. From the Hyperlinks catalog, select any of the self-contained targets and drag it over to the desired section of the drawing.

Step 3. Double click on the hyperlink symbol to program it.

Step 4. Select Yes.

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Step 5. Select Browse/Files.

Step 6. Locate the file of interest, select it and click Open.

Step 7. Select OK.

Step 8. Double click on the Hyperlink icon to access the linked Excel file.

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10.0 Multiple Page Files with Hyperlinks

This section will explain, how to spread single line diagram over multiple pages while maintaining the database connectivity. The example will be based on the original Project1.axd as shown in the single line diagram below. In this case, the 2.4/0.48 kV transformer and its respective 480 V substation will be placed on a separate page.

Page No.1 Page No.2

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Step 1. Create a new page, by clicking on this icon.

Step 2. Name the new page. For this example, type Page 2.

Step 3. Once the new blank page is added, it will immediately appear in the active pane. Return to Page 1 by selecting it from the pick-list, as indicated here.

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Step 4. Fence in the desire part of the network at Page 1.

Step 5. Cut the selected part of the network.

Step 6. Switch to the Page 2 and paste the network.

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Step 7. Select the node LINK that will be used for interconnection between the pages.

Step 8. Copy the node.

Step 9. Switch to the Page 2 and paste the node using Edit > Paste Duplicate Symbol command.

Step 10. Connect transformer XFMR-3 to the duplicate node LINK. Notice that the network on page 2 is energized.

IMPORTANT NOTE

Use Paste Duplicate Symbol to create multiple graphical presentation of a single element. This command is different than Paste command as the latter creates a new element while the former creates second graphical presentation of a single element. Paste Duplicate Symbol can be applied only on Nodes and Busbars.

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Step 11. Insert a hyperlink on Page 2 and connect it to node LINK.

Step 12. Hyperlink the LINK to Page 1 as shown here.

Step 13. Insert a hyperlink on Page 1 and connect it to node LINK.

Step 14. Hyperlink the LINK to Page 2 as shown here.

Step 15. Double-click on one hyperlink will open the other page and zoom on the duplicate element.

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11.0 Creating DesignBase Projects / Multiple Hyperlinked Drawing Files

A project may consist of a single or multiple electrically interconnected drawings. A project can be started as a single drawing file to which additional ones are added as the project progresses. When multiple drawings are electrically interconnected to each other, all the electrical data is added to a common database. This database will bear the name of the original project (usually the first drawing being created). Opening an individual drawing file that is part of a multiple drawing project will open the entire database but only that specific drawing file. On the other hand, opening the project file will open the entire database along with the drawing that is created first (the main project drawing).

This section will explain how to spread a project over multiple files while maintaining the database connectivity. The example will be based on the original Project1.axd as shown in the single line diagram below. In this case, the 2.4/0.48 kV transformer and its respective 480 V substation will be placed on a separate file.

File: Project1.axd File: Project2.axd

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Step 1. Lets open the drawing file Project1.axd.

Step 2. Select File > Add a New Drawing File to Project.

Step 3. Name the new drawing as shown below. Make sure that the new drawing being added is in the same folder as the entire project.

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A new drawing will open.

Step 4. Use Window > Arrange All if you want to view both drawings simultaneously.

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Repeat the steps 4-15 from the previous section to create a network shown below.

IMPORTANT NOTE

DesignBase allows use of both: multiple pages and multiple drawings. User is encouraged to use multiple drawings instead of multiple pages. Our Protective Device Coordination (PDC) software creates PDC studies as additional pages. Novice users often confuse multiple pages with PDC studies, hence the recommendation to use multiple drawings.

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12.0 Locating Symbols in a Project

Step 1. Let's locate branch CB-MOT-2 which is a 250 A

breaker on the BUS-90. First select the Find icon.

Step 2. From the pick-lists, select CB-MOT-2 branch.

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Step 3. The program finds the requested branch in its respective drawing.

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13.0 The Project Manager

Master Database

Click here to invoke the Project Manager.

Network components. Click once to locate the symbol in the drawing, or double click to access its editor.

This section shows a list of the drawings in the project including the pages that are part of each drawing. Click on any page to access it.

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14.0 The Database / Text Editor

Step 1.

Select the Text Editor icon. Step 2. The Text Editor is another way to edit the database components without using the graphic interface. The different functionalities include sorting, editing, navigating and deleting components.

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15.0 MCC & Panel Auto-Links

Panel & MCC Link icons are capable of tying sections of the network across two pages automatically. When used they will create a new page, add a hyperlink and provide an MCC or Panel bus bar for adding loads.

Step 2. This symbol represents the hyperlink between page 1 and page 2. To go to page 2, simply double click on this symbol.

Step 1. To add an MCC Link, click, drag and place the MCC Link symbol over to the desired location.

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Step 3. Verify that this page (Page 2)

has been automatically created.

Step 4. This bus bar represents the newly added MCC. Proceed to attach all the required loads to this bus bar.

Step 5. This symbol represents the hyperlink between page 2 and page 1. To go back to page 1, simply double click on this symbol.

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16.0 Panel & MCC Schedules

DesignBase allows the user to enter load schedules directly from the load editor. The loads entered in this fashion can be composed of purely static loads, motor loads, or a combination of both. The reader must interpret the term static load as a load that does not contribute to short circuit currents (Lights, heaters, etc.). The key issue here is that when grouping different types of loads in the load schedule application, the user must specify what category the intended schedule falls under. From the Load Flow point of view, it is quite simple since all types of loads must be considered as demand on the system. This means that from on the Load Flow side of the load editor they will always be considered as loads. This is clearly shown in the figure below.

Load

Schedule

Static Loads

Only Mixed Load

Static Loads Motor Loads

Impact on

Load Flow

Impact on

Short Circuit

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From the Short Circuit point of view, however, careful consideration must be given to the classification, since the short circuit contribution of different types of motor loads is calculated according to specifically different guidelines. The following table will guide the user on how to define the Short Circuit section of the load editor when entering different types of combinations.

The next exercise will be based on the following example:

System Voltage: 480 V

Load Type: MCC Schedule

Loads Connected: 1. Motor 1 150 HP

2. Heating Block 150 kW

As it can be appreciated from this example, there are a total of 2 loads that must be considered from the

Load Flow point of view, while only 1 of them will impact the Short Circuit calculations.

Step 1. Add one MCC symbol in the project.

Step 2. From the Short Circuit tab, select MCC/Schedule.

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Step 3. From the pick-list on line 1,

select Induction Motor.

Step 4. From the library manager, select a 460 V / 150 HP motor as shown here.

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Step 5.

Select Prot Dev/Cable section.

Step 6.

From the pick list, select "Breaker" as the protective device.

Step 7.

Select this cell.

Step 8. Select "Feeder". Select a suitable feeder for the motor from the cable library.

Step 9. Enter the "Length" of the feeder and the breakers "Amp" setting (Prot Amps).

Step 10. Select Usage section.

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Step 11. Enter the demand factor in % for the motor that applies to each defined scenario. In this case there is only one scenario at 100%.

Step 12. Select SC Impedance.

Step 13. These values are the ANSI equivalent short circuit impedances for typical induction motors. Verify and modify as required. Load Flow Only loads will display values of zero in these fields.

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Step 14. Following a similar procedure, enter the data

for the Heating Block as shown here.

The running totals for Load Flow and Short Circuit are shown here.

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17.0 Automatic Transfer Switches

Step 1. Open the file Project1.axd. In this example, these switches will be interlocked such that only one of them can be closed at any given time. This will serve to transfer the load of the network from the Grid over to the Generator and vice-versa.

Step 2. Double click on the generator output breaker CB-HV-2.

Step 3. Select ATS.

Step 4. Select the "Associated Branch." Click OK

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18.0 Project Version Control

Every project undergoes changes needed to accommodate load growth, design modifications, etc. Often it is very useful to save snapshots of the job file as these changes take place, so that references to previous conditions can be easily made. To perform these types of record keeping tasks, DesignBase allows unlimited versions of the same project to be archived.

Open Project1 file. Lets assume that we want to perform the propose modification to the network as shown below while keeping the original file available.

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Step 1. Select the Snapshot tool.

Step 2. Enter a name for the original file and select a folder in which to archive it. Select OK.

Step 3. Add password protection as required and press OK.

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Steps 1 to 3 can be repeated every time a new historical record is needed prior to a revision being made.

Step 4. Make the necessary changes to the file and save your

work.

Step 5. To access a previous version of the file (while working on the most recent one) select the Roll- Back tool.

Step 6. From the list, select the archived version of the project to view, and select OK.

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19.0 Security Administration Commands

Topics presented in this section concern advanced administrative privileges that can be assigned to multiple users of the same project files. We advise the reader to skip this section unless he is specifically interested in this topic.

The security administration commands are accessed from the Tools menu as shown here.

Change Protection Enables or disables of the file password protection feature.

Access Control Maintenance Allows the job manager to add users to a specific job file. Users must be listed in the User Maintenance list.

User Maintenance Allows the administrator to add system users.

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19.1 User Maintenance

Step 1. Select User Maintenance.

Step 2. Enter the Administrators User ID and Password as entered during the installation process. Select OK.

The administrator can either modify settings for existing users by selecting them from the User ID pick-list, or add a new user by selecting the New User command. Lets add a new user.

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Step 3. In this dialog box, the administrator can list all the users, change their access password, change access privileges and also add/delete users. To add a new user, select New User.

Step 4. Type the new user's User ID, Full Name and Password. Then define the user type as User. Select OK to complete to add the user.

Step 5. Select Save and then select Done.

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19.2 Access Control Maintenance

After user accounts are created, users can assign access levels to specific job files for other specific users. When a user creates a new job file (either with File New or File Save As), that user is considered the manager of that new job file. To be allowed to assign access levels to job files, the user must be a validated user. Thus, the user must enter a password before that user can define access levels for a new job file. Obviously this means the user account must be created by an administrator before the user can assign access privileges. User accounts are created as explained in section 19.1.

The available privilege levels for job file access are: Manager, Writer, Reader, None. Any user can be assigned any access level to a job file. The creator of the job file is designated as a Manager. Managers can specify other managers, or give lower levels of privilege to other users.

Managers have full access to the job file, including changing access levels for other users. Writers can read, write, modify, and delete data in the job file. Readers can only read data from the job file. None means that the user cannot access the job file.

Privilege levels may be specified for as many users as the job file manager desires. These privileges specify what access is permitted for the users, thus the list of privileges is called the Access Control list.

Step 1. When a new job file is created, the user has the opportunity to specify what access controls are to be used for the job file. The user is presented with this dialog box. The user must then specify an existing User ID and the respective Password.

It is important to keep in mind that this MAY NOT be the only password for the job- file. This is the password for the user managing the job-file.

When done, select OK.

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Step 2. To add a new user to this job-file, select Access Control Maintenance from the Security menu.

Step 3.

Select Add.

Step 4. Type the User ID and assign the access privilege applicable to the currently open job-file. Select Writer and press OK. The user being added is edsauser who was previously added to the user access list in step 19.1.

Step 5. To complete the operation, select Save and then select Done.

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19.3 Access to Protected Files

Step 1. Select the file to be opened.

The user must fill in the User ID And Password fields, as well as indicate what level of access is requested. The user has the option of choosing an access level below the one assigned to his/her User ID for that job file. For example, a user with Writer access may select Reader access when opening the job file. After selecting the desired access level press Continue.

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19.4 Changing Protection Settings

Step 2. Enable or disable the password protection as required and press OK.

Step 1. Select Change Protection from the Security menu to enable or disable file password protection.

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19.5 Revision Control

The file used for this example, has two users; one is the job manager (ID: manager / Password: manager) and the other is a user/writer (ID: user / Password: user). The example will show how the user/writer can make changes to the file and then submit them to the job manager for approval.

Step 1. Log in as edsauser and select Writer as the access level allowed.

Step 2. Double click on this transformer, and modify its wiring configuration from Delta-Wye Grounded to Delta-Delta.

Step 3. Invoke the Master File Editor

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Step 4. Select Revision History.

Step 5. Enter a title for the report that is descriptive of the modifications performed. Press OK. Save the file and close it.

Once the user has modified the file, the manager can verify and approve the changes.

Step 6. Log in as manager and select Manager as the access level allowed.

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Step 7.

Invoke the Master File Editor

Step 8.

Select Revision History.

Step 9. Highlight the report and select Report to review any modifications made by the users.

Step 10. Reports can be Approved or Unapproved by selecting the respective commands. Press OK to exit. A list of all the modifications done to the job file will be shown in the output report.

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Step 11. To approve changes on an equipment by equipment basis, select the device in question and double click on it to access its editor.

Step 12. To approve, select Approve. Press OK to exit.

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20.0 Creating and Managing Project Libraries

Step 1. From the Database menu, select Project Libraries.

The DesignBase "Library Manager" will appear as

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Step 1. Define the units (metric or US) for the library to be created, by selecting Change Unit System.

Step 2. Select the required unit system and press OK.

Step 3. Select the display frequency and temperature by clicking on the Change Display icon.

Step 4. Select the required temperature & frequency and press OK.

Step 5. Select Add New Item to begin adding devices to the library.

Step 6. Select the type of device to be added. Select a 3 Phase Feeder, as shown here and press OK.

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Step 7. Enter a Library Name for the feeder.

Step 8. In the Description tab, enter the feeders Manufacturer name and a suitable Description.

Step 9. In the Cable/Line Data tab, enter the impedance values for the feeder based on 1000 feet of length.

Step 10.

Select the cable Material.

Step 11. Enter the ampacity rating of the feeder at the different temperatures specified in the editor.

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Step 12. The new feeder has been successfully added to the project database, and it is displayed in a categorized tree format as shown here.

Step 13. To save the new project library file, select Save As Library.

Following the same steps shown here, the user can continue to build the library by adding devices such as transformers, breakers, fuses, line reactors, etc.

Step 14. Type a name for the new library, and press Save.

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Step 15. The user also has the option of importing data from other existing libraries. To do this, open the library you want to import to, select the Import command.

Step 16. Select the library to import, and press Open.

IMPORTANT NOTE

The action requested in Step 16 may last longer than expected. As there are thousands of items in that US library, it takes time to process them all. You may want to skip step 16, or have patience until it is over. Usual workflow is to create smaller library and import it in the big one.

Step 17. To assign the new library file as a default for a project, select the Master File Editor.

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Step 18.

Select the File Locations tab.

Step 19. Select Browse.

Step 20. Select the required library file and press Open.

Step 21. Select OK.

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21.0 Creating UPS Models

An Uninterruptible Power Supply (UPS) connected to an AC network, essentially represents an AC load (burden) on that AC system. On the other hand, the output of the UPS acts as a power supply to the loads that it is backing-up and as such it is a source of power. For a model to be accurate in every way, the loads connected to the output of the UPS must be automatically accounted for as part of the total load that the UPS input presents to the AC system feeding it. DesignBase provides three different models capable of handling any situation. These three models are:

Method 1: The user enters the total kW and kVAR load represented by the UPS. This total

accounts for:

UPS Nominal Rating (kW + kVAR) The critical load supported by the UPS (kW + kVAR) The UPS recharging load (kW + kVAR) The UPS losses (kW + kVAR)

Method 2: The user enters the load of the UPS broken down into its individual components:

UPS Nominal Rating (kW + kVAR) The critical load supported by the UPS (kW + kVAR) The UPS recharging load (kW + kVAR) The UPS losses (kW + kVAR)

Method 3: The user enters the following data:

UPS Nominal Rating (kW + kVAR) The UPS recharging load (kW + kVAR) The UPS losses (kW + kVAR)

The load data pertaining to the supported critical load, is automatically calculated (through a Load Flow) by the program based on the UPS power source output model.

The following sections will illustrate how to model UPSs using the DesignBase editor.

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UPS Short Circuit output model.

Step 1. To illustrate how the UPS model works, open the file Upsexp.axd found under: C:\DesignBase5\Samples\AdvPF\Upsexp.exd

UPS Load Flow input model.

UPS Short Circuit output model.

Step 2. The UPS model is composed of two symbols as shown here.

Step 3. To edit the input of the UPS, double click on bus 5.

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Step 4a. Select Method 1 to model the total load represented by the UPS, and proceed to enter the data as required.

Step 4b. Select Method 2 to break down the details of the load represented by the UPS. Enter the data as required.

Step 4c. Select Method 3 to link the load connected to the output of the UPS to the input total load.

Step 4e. Enter the rest of the data as required.

Step 4d. From the pick-list, select the node that represents the UPS output source model. Select bus 20.

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Loads are automatically transferred to the input.

Step 5.

Double click on bus 20, to edit the output of the UPS.

Step 6. From the Short Circuit tab, select the short circuit model to be used and enter the required information. Press OK.

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21.1 Using the Complex Components UPS Model

Step 1. The Complex Components catalog contains a pre-modeled symbol for the input/output of the. To use it, simply invoke the Complex Components catalog, by clicking on this icon.

Step 2. Drag, drop, and connect the UPS symbol into the desired position.

Step 3. Set up the UPS model as required, by following the procedure shown in section 21.0.

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22.0 Creating Rectifier and Inverter Models

Rectifiers take AC power and convert it into DC power. Inverters take DC power and turn it into AC power. DesignBase allows these types of converters to be modeled into job files defined as hybrid files. This means that a job file of this sort is set up as an AC-DC network. Both types of converters have the capability of translating their respective output loads over to their total input load for the purposes of AC/DC load flow calculations. Conversely, each of the outputs acts as a power source for the loads being supported. The following section will illustrate how to interconnect the AC and DC nodes in order to effectively model rectifiers and inverters. The file that will be used in this example can be found in the Design Base 5.0, Samples folder. The specific path for the file is: C:\DesignBase5\Samples\ACDCLF\AC_DC_AC1A.AXD.

22.1 Modeling Rectifiers

Step 1. Open the file ACDCLF\AC_DC_AC1A.AXD.

Step 2. Identify the Rectifier system.

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This is modeled as an AC bus.

This is modeled as a Rectifier.

Step 3.

To interlock the output DC bus (Rectifier) with the input AC bus, both the AC and DC buses must have the same ID.

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Step 4. Double click on the AC

Rectifier symbol. Step 5. Assign a bus ID. In this

case use Rectifier.

Step 6. Double click on the DC Rectifier symbol.

Step 7. Assign the same bus ID used in step 4 (Rectifier).

Step 8 Define the Short Circuit and Load Flow characteristics of the rectifier.

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22.2 Modeling Inverters

Step 1.

Open the file ACDCLF\AC_DC_AC1A.AXD.

Step 2. Identify the Inverter system.

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This is modeled as an Inverter.

This is modeled as an AC Bus.

Step 3. To interlock the output AC bus with the input DC bus (Inverter), both the AC and DC buses must have the same ID.

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Step 3. Double click on the Inverter.

Step 4. Assign a bus ID. In this case use Inverter.

Step 5. Define the Short Circuit and

Load Flow characteristics of the inverter.

Step 6.

Double click on the AC Bus.

Step 7. Assign the same bus ID used in step 4 (Inverter).

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22.3 Using the Complex Component Inverter and Rectifier Models

Step 1. The Complex Components catalog contains pre-modeled symbols for the inverters and rectifiers as explained in sections 24.1 and 24.2. To use it, simply invoke the Complex Components catalog, by clicking on this icon.

Step 3. Set up the Rectifier and/or Inverter models as required, by following the procedures shown in section 24.1 & 24.2.

Step 2. Drag, drop, and connect the required symbol into the desired position.