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ETAP PowerStation 4.0

User Guide

Copyright 2001 Operation Technology, Inc.

All Rights Reserved This manual has copyrights by Operation Technology, Inc. All rights reserved. Under the copyright laws, this manual may not be copied, in whole or in part, without the written consent of Operation Technology, Inc. The Licensee may copy portions of this documentation only for the exclusive use of Licensee. Any reproduction shall include the copyright notice. This exception does not allow copies to be made for other persons or entities, whether or not sold. Under this law, copying includes translating into another language. Certain names and/or logos used in this document may constitute trademarks, service marks, or trade names of Operation Technology, Inc. or other entities. • Access, Excel, ODBC, SQL Server, Windows NT, Windows 2000, Windows Me, Windows

98, Windows XP, and Microsoft Word are registered trademarks of Microsoft Corporation. • AutoCad is a registered trademark of Autodesk. • Oracle is a registered trademark of Oracle Corporation. • PowerPlot is a registered trademark of Jackson & Associates. • Crystal Reports is a registered trademark of Seagate Software. • MATLAB and Simulink are registered trademarks of MathWorks • Screen shot(s) reprinted by permission from Microsoft Corporation. Operation Technology, Inc. believes that the information contained herein is accurate as of its publication date, and such information is subject to change without notice. This information is provided “as is” without warranty of any kind, either expressed or implied, including but not limited to the implied warranties of merchantability, fitness for a particular purpose, or non-infringement. Operation Technology, Inc. assumes no responsibility for errors or omissions in this publication or any other documents referenced in this publication.

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Chapter 6

One-Line Diagram GUI

PowerStation provides a fully Graphical User Interface (GUI) for constructing your one-line diagram. Here you can graphically add, delete, relocate, connect elements, zoom in or out, display grid off or on, change element size, change element orientation, change symbols, hide or show protective devices, enter properties, set operating status, etc.

Operation Technology, Inc. 6-1 ETAP PowerStation 4.0

One-Line Diagram GUI Introduction

When you create a new one-line diagram presentation, you will be placed in Edit mode with the configuration status set to default, which is called Normal. The grid and Continuity Check are also switched off. When you open (activate) an existing one-line diagram presentation, it opens with the attributes, which were saved last, i.e., mode (Edit, Load Flow, Short-Circuit, Motor Starting, etc.), configuration status, display options, view size, and view location. When you create a new project, a one-line diagram presentation is automatically created with an ID (name) equal to the ID of the default one-line diagram, appended with a unique number. To create a new one-line diagram presentation in an existing project, right-click on One-Line Diagrams in the Project View, as shown below.

The ID (name) of a one-line diagram presentation can be changed either from the Project View (expand the presentations tree, right-click on One-Line Diagram, and select properties), or by double-clicking in the background of the one-line diagram presentation. PowerStation’s one-line diagram is a one-line representation of a balanced three-phase system. The one-line diagram is the starting point for all studies. You can graphically construct your electrical system by connecting the buses, branches, motors, generators, and protective devices in any order from the One-Line Diagram Edit Toolbar. You can connect the elements to the buses graphically or from their editors. You can double-click on elements to open their editors and edit the engineering properties, which include ratings, settings, loading, connection, etc. The defaults for each element can be modified before placing elements in the one-line diagram to minimize the data entry.


One-Line Diagram GUI Edit

6.1 Edit A One-Line Diagram In this section, some of the most common functions of the graphical user interface for the one-line diagram are explained. The detailed instructions provided here will assist you in creating and editing your one-line diagram presentation.

6.1.1 Mouse And Keyboard Functions

Key A key on the keyboard is represented by its name enclosed in a pair of triangular brackets. For example, the Control key is represented by <Ctrl>.

Click Place the mouse cursor on an object or button, and then click the left mouse button. Click is used to select an element in the one-line diagram, add elements from the toolbars, etc.

Right-Click Place the mouse cursor on the object, and then click the right mouse button. For example, right-clicking on an element in the one-line diagram brings up a menu.

Double-Click Place the mouse cursor on an object or button, and then click the left mouse button twice rapidly. For example, a double-click on an element inside a one-line diagram brings up the property editor for that element. For composite networks and motors, double-clicking brings up the nested one-line diagram for that composite element.

<Ctrl> + Click Place the mouse cursor on the object, then, while pressing the <Ctrl> key down, click the left mouse button. Use <Ctrl> + click to select or deselect one-line diagram elements.

<Shift> + <Ctrl> + Click Place the mouse cursor on a cable; then, while pressing the <Shift> and <Ctrl> keys down, click the left mouse button to drag a cable from the one-line diagram to a UGS (U/G Raceway System) or vice versa. Use <Shift> + <Ctrl> + click to place one-line cables in conduits or locations in the underground raceways.

Drag Place the mouse cursor on an element, click and hold the left button down, drag the mouse to the required position while keeping the left button down, then release the left button to place the element.

Rubber-Band The mouse cursor should not be on any element; click and hold the left button down. Drag the mouse to the required position while keeping the left button down, and then release the left button. You will see a rectangle marked with dotted lines indicating the area that you have selected. This is used for selecting a group of elements.



6.1.2 Add Elements Every element in PowerStation requires a unique ID. PowerStation includes a Name Manager class, which insures that the ID of all elements, presentations, configuration status, study cases, underground raceway systems, etc. are unique. When you add a new element, the Name Manager automatically assigns an ID to it by appending a number to the default ID of that element.

Bus ID = (Default ID) + (A Unique Number) = Bus + 1 = Bus1

When you add an element, it is initialized with the default values. You can modify the default values for each element by either selecting Defaults from the menu bar or from the components list in the Project View.

Add One Element Click on an element symbol on the Edit Toolbar, then drag the cursor to the one-line diagram and click to drop it.

Add Multiple Elements Double-click on an element on the Edit Toolbar to add multiple copies of the same element to the one-line diagram. To add an element to your one-line diagram, click on any button on the Edit Toolbar, which changes the cursor shape to the element’s picture. Now you can drag and drop that element in any position on the one-line diagram by clicking the mouse. After dropping the element, the cursor goes back to its original arrow shape. If you double-click on the Edit Toolbar, you can drop multiple copies of the same element in the one-line diagram. Rules

Elements can be added only in Edit mode, i.e., they CANNOT be added in any study mode. • • Elements can be added when Base Data is active, i.e., they CANNOT be added when any Revision

Data is active.

6.1.3 Select & Deselect Elements Click on an element to select it. Click anywhere in the one-line diagram or underground raceway system to deselect the element. Use <Ctrl>+Click to select or deselect any element. To select an element, click the left mouse button while the cursor (arrow shape) is on top of the element. When an element is selected, it is shown in red. To select multiple elements, you either press <Ctrl>+click to add or delete elements to the selected group, or rubber-band a group of elements.



To rubber-band a group of elements, click the left mouse button where there is no element and drag the mouse. It will show you a dotted rectangle. When the mouse is released, all elements completely inside the rectangle will turn red. To select a group of elements, rubber-band the elements or the whole one-line diagram. <Ctrl>+Click to select other elements or deselect elements from the rubber-banded group. When an element is selected, its color is shown in red. Deselected AC elements are displayed in black and DC elements in blue.

6.1.4 Element & Connector Colors You can customize the colors of all elements and connectors by setting their colors in the INI file. The following default colors are used for different operating modes:

Mode Element Continuity

Check Condition Color Comment All AC Device On Energized Black All AC Device On De-Energized Gray All AC Device Off Any Black

Including motors, loads, and branch ckts.

All DC On Energized Blue All DC On De-Energized Gray All DC Off Any Blue

Including motors, loads, and branch ckts.

All 3φ Bus On Energized Black Solid Line All 3φ Bus On De-Energized Gray Solid Line All 3φ Bus Off Any Black Solid Line

All 1φ Branch On Energized Green Dotted Line All 1φ Branch On De-Energized Gray Solid Line All 1φ Branch Off Any Black Solid Line

All 1φ, 3 Wire

Branch On Energized Bright Green Dotted Line

All 1φ, 3 Wire Branch

On De-Energized Gray Solid Line

All 1φ, 3 Wire Branch

Off Any Black Solid Line

Run Studies Bus On/Off Error Magenta Base Kv Problem Load Flow Bus On/Off Alarm Red Critical Limits,

Overload Load Flow Bus On/Off Warning Magenta Marginal Limits

Short Circuit Bus On/Off Fault Dark Red Faulted Bus Short Circuit PD On/Off Alarm Red Overstressed



6.1.5 Relocate Elements To drag an element or group of elements, first select the elements that you want to move. Selected elements are shown in blue. Move the cursor on top of the selected elements, click and hold the left mouse button, place them in the desired position, and release the button.

Relocate a Single Element Select an element and move the cursor on top of it; the cursor becomes a move symbol. Drag the element to a new position and release the left button.

Relocate a Group of Elements Select the elements that you want to relocate, move the cursor on top of the selected elements so it becomes a move symbol, and then drag the selected elements to a new position.

6.1.6 Connect Elements Each element has one or more (up to 20) pins. A pin is a graphical tool (represented by a small, red square indicating the connection point) to connect elements together. The following is a list of elements and their pins:

Sources (synchronous generator, power grid, and battery) have one pin. • •

•

• • • • • • • • •

•

• • • • •

Loads (synchronous motors, induction machines, DC motors, static loads, MOVs, capacitors, filters, etc.) have one pin. Branches (two-winding transformers, lines, cables, impedances, reactors, etc.), protective devices (high & low voltage circuit breakers, fuses), and relays have two pins. Three-winding, potential, and current transformers have three pins. Switching devices have two pins. Double-throw switches have three pins. Overcurrent relays and ammeters have two pins. Voltmeters, voltage relays, and frequency relays have one pin. Composite motors have one pin. Composite networks have up to 20 (4, 8,12,16, & 20) pins. Converters (DC converters, chargers, inverters) have two pins. Buses are considered to be one long pin (continuous pins along their length).

Connect Element to Bus Place the cursor over the pin of an element (pin appears in red). Click and drag the mouse to a bus. When the bus turns red, release the left button. Drag an element and place its pin on a bus. Drop a new element with its pin on top of a bus. Buses are considered to be one long pin. Connections are always made from elements to buses. Relays cannot be connected to buses. Only one pin of an element can be connected to the same bus.



Connect Element to Element You can graphically connect elements by moving the cursor to the end of an element until the connection pin is highlighted red. Click and drag the mouse to a bus or protective device and release the mouse button when the bus or the connecting pin is also red.

Place the cursor on the pin of an element. Click and drag the mouse to the element you want to connect. When the latter element’s pin turns red, release the left button.

•

• • •

Drag & drop a protective device with its pin placed on top of the pin of any branch or load element. Drag & drop a protective device onto a connection. Branches CANNOT be connected to each other; PowerStation automatically inserts a bus between them.

• Branches CANNOT be connected to loads, utilities, composite motors, and composite networks.

Relays can only be connected to current transformers (CT) or other relays. •

• You CANNOT directly connect two buses with a connector or current transformer.

The Remote Connector Two sections, section 1 and section 2, form the Remote Connector element. The Remote Connector makes it possible to connect elements together which are located in completely separate areas of the project, without the need to run a long, continuous branch circuit cable connector between them. Please see the figure below.



The Remote Connector Find Feature The Find Other End feature associated with the Remote Connector allows the user to quickly locate all elements connected to either section 1 or section 2 of the Remote Connector. Right click on either section of the Remote Connector, and select Find Other End from the menu. The Program will automatically locate the other section of the Remote Connector, regardless of its location in the One-Line Diagram.

Insert Protective Devices (PD) You can insert protective devices in any connector path by dragging and dropping it on top of the connector. There is no limit to the number of protective devices that can be inserted and connected together. If a connector is horizontal, the orientation of the protective device is automatically changed to 180 degrees and inserted in the connector path. In this example, a circuit breaker and fuse are inserted between Bus1 and T1.



6.1.7 Cut, Copy & Paste

Cut (Delete) Elements, along with their connectors, can be cut (deleted) from the one-line diagram and placed in the Dumpster. There are four methods to cut selected elements.

Select Cut from the right-click menu • • • •

Click on Edit on the menu bar and select Cut Click on the Cut button in the Project Toolbar Press the Delete key on your keyboard

Cutting a transformer using the right-click menu

Rules

Elements can be cut in Edit mode only when Base Data is active. • • • • • •

Elements have to be selected before cutting. To cut a connection, the connection has to be selected (click on it). When a protective device in a connecting path is cut, the connector remains intact. Hidden protective devices become visible when a connector is cut. Section 1 and section 2 of the Remote Connector must be cut at the same time.

When an element or group of elements is placed in the Dumpster, PowerStation forms a new Dumpster Cell to hold them. PowerStation assigns the name of the Dumpster Cell. When you cut an element or a group of elements, they are deleted from the one-line diagram and placed in the Dumpster with the same ID. The connections, properties, and status of the deleted elements are preserved.



Copy Elements, along with their connectors, can be copied into the Dumpster by one of three methods:

• Right-click on an element and select Copy • Click on Edit in the Menu bar, and select Copy • Click on the Copy button on the Project Toolbar

Rules • Elements can be copied in Edit mode only when Base Data is active • Elements CANNOT be copied in a Revision Data • You CANNOT copy a connector with hidden protective devices • Section 1 and section 2 of the Remote Connector must be copied at the same time. When an element or group of elements is placed in the Dumpster, PowerStation forms a new Dumpster Cell to hold them. PowerStation assigns the name of the Dumpster Cell. When you copy an element or group of elements, they get copied into the Dumpster with new IDs. The connections, properties, and status of the duplicated elements in the Dumpster are preserved. Paste Use the Paste command to copy the selected cell from the Dumpster into the one-line diagram. Elements can be pasted from the Dumpster by three methods: • Right-click on the one-line diagram and select Paste at the cursor location • Click on Edit in the menu bar and select Paste at the cursor location • Click on the Paste button on the Project Toolbar to paste at the top left corner of the one-line diagram Rules • Paste can be done only in Edit mode when the Base Data is active. • Paste CANNOT be done if there are no Cells (element groups) in the Dumpster. • Paste will copy the active Dumpster Cell into the one-line diagram. You can change the active Cell

by opening the Dumpster presentation (from the Project View) and clicking on the Cell ID. When you cut or copy elements to the Dumpster, the newly created Dumpster Cell becomes the active Cell.

• Dumpster Cells are not deleted after pasting. • You cannot copy part of a Dumpster Cell; the entire contents of a Cell are pasted. • You can paste the contents of any Dumpster Cell into any Composite Network. However, you cannot

paste Cells that contain buses and branches into Composite Motors. • Section 1 and section 2 of the Remote Connector must be pasted at the same time. When you paste a Dumpster Cell, it gets copied into the one-line diagram with a new ID. The connections, properties, and status of the pasted elements are preserved.



Move From Dumpster Elements can be moved from the Dumpster into the one-line diagram with the same IDs by two methods: • Right-click on the one-line diagram and select Move From • Click on Edit on the Menu Bar and select Move From Rules • Move From Dumpster can be done only in Edit mode when Base Data is active. • Move CANNOT be done if there are no Cells (element groups) in the Dumpster. • When you move a Dumpster Cell to the one-line diagram, the desired Cell needs to be active and it

gets deleted from the Dumpster after being moved. • You can move any Dumpster Cell you desire by making it active from the Dumpster presentation.

When you cut or copy elements to the Dumpster, the newly created Dumpster Cell becomes the active Cell.

• You cannot move part of a Dumpster Cell; the entire contents of a Cell are moved. • You can move any Dumpster Cell into any Composite Network. However, you cannot move Cells

that contain buses and branches into a Composite Motor. • Section 1 and section 2 of the Remote Connector must be moved from the dumpster at the same time. When you move the contents of a Dumpster Cell into the one-line diagram, the IDs of the moved elements, along with the connections, status, and properties are preserved.

6.1.8 Size, Symbol & Orientation

Element Size When an element is added into the one-line diagram, its default size is 3. To change it to another size, right-click on the element to bring up a menu. Use the Size command to select a size (1,2,3,4, or 5). The drawing below shows a three-winding transformer that is changed from size 1 to size 5.



Element Symbol There are two graphic symbols (ANSI & IEC) available for one-line diagram elements. The symbols for some elements, such as buses, are the same for both standards. Symbols can be set for newly added elements or changed for any existing element.

Symbol of New Elements When you add elements to the one-line diagram, PowerStation uses the Project Standard for the ANSI or IEC symbol of the new element. Note that the Edit Toolbar also reflects the selected Project Standard.

Change Symbol of Existing Elements Right-click on an element to bring up the menu, use the Symbols command, and then select ANSI or IEC.

Element Rotation To change the orientation of an element you need to right-click on the element to bring up a menu. Use the Orientation command, then select one of the orientations (0, 90, 180, or 270).

Rules • When an element is added, its orientation is based on the system default as follows: • Buses are added at 0 degrees • Composite networks are added at 90 degrees and do not rotate • Protective devices are added or inserted based on the orientation of the connections • All other elements are added at 90 degrees



6.1.9 Protective Devices

Protective Device Status Circuit breakers, fuses, relays, potential transformers, and current transformers are considered protective devices. However, only switching devices (circuit breakers, switches, contactors, and fuses) have status (open or closed). Note that when you change the status of a circuit breaker, you are changing it for the active Configuration Status. When you switch to another configuration, the status may be different. This statement is also true for the status of motors, MOVs, and loads. Status can be changed by using the right-click menu or from the editor. From the right-click menu • Right-click on a circuit breaker in the one-line diagram to open the menu, and use the Closed

command. The check mark (√) means the status of the circuit breaker is closed. If you click on it, the check will disappear and the status of the circuit breaker will become Open. For a normally open protective device, a NO (Normally Open) annotation is shown in the one-line diagram.

• To close an open circuit breaker, use the Close command. The check will appear next to Closed in the menu and NO will disappear from the one-line diagram.



From the Editor • To change the status of a circuit breaker from its editor, open its editor and click on Closed or Open in

Configuration Status.

Hide Protective Devices (PD) Protective devices (circuit breakers, fuses, current transformers, switches, contactors, potential transformers, meters, and relays) can be made invisible for each individual one-line diagram presentation. For example, one presentation can be your relay view where all protective devices are displayed. Another presentation can be for load flow studies where you may not want to show any protective devices. Protective devices can be hidden (not visible in the one-line diagram) individually or in groups.

Hiding Protective Devices Select a protective device from the one-line diagram and right-click on it to open the menu, and then click on Visible. The protective device will become hidden and will be shown as a red diamond on the connector when the connector is selected. The red diamond is an indicator for hidden elements and appears whenever you click on the connector.



Select one or more protective devices, right-click on the background, then select Hide All PDs to hide all selected protective devices.

Rules • A protective device with one end open (one pin not connected to any element) cannot be hidden. • You CANNOT copy a one-line diagram with hidden protective devices. • A potential transformer (PT) can be hidden only if both pins located on the primary (line) side of the

PT are connected to elements • If a one-line diagram with hidden protective devices is cut or deleted, the protective devices will be

visible in the Dumpster. • Protective devices CANNOT be hidden in the Dumpster. • Protective devices can be hidden or visible regardless of their status.

Showing Protective Devices Select a connection with a hidden protective device. The hidden protective device will be shown as a red diamond on the connector. Right-click on the hidden protective device (switch S1) to open the menu and select Show PD.



After selecting one or more connectors with hidden protective devices, right-click anywhere on the one-line diagram where there is no element, then click on Show All PDs.

Sometimes there are two or more hidden protective devices on one connection. If you decrease the length of the connection, then the hidden protective devices are shown as two small, red diamonds next to each other. In this case, if you repeat one of the above methods, it will make all the protective devices visible on this connection. To avoid this, stretch the connection by separating the two elements connected to these protective devices.



Rules on Show All PDs • On a connection with one or more hidden protective devices, there is no need to select or rubber-band

the connection. Place the cursor on the connection and right-click to open the menu, then click on Show All PDs.

• If there are any composite networks or motors within the rubber-banded area, the protective devices inside of these composites will not be affected.

• Hide or Show all PDs is specific to each one-line diagram presentation.

6.1.10 Nodes & Buses The connecting point between two branches or a motor and branch requires a bus. If this bus is not an MCC switchgear, or if you simply do not desire to emphasize the bus on your one-line diagram, change the symbol of the bus from a bar shape to a dot shape. Note that nodes have separate annotation options than buses, and power flows and current are not displayed into or out of nodes. You can use the right-click menu to change a bus to a node or vice versa. • Right-click on a Bus to open the menu and use the Node command. • To change from Node to Bus, right-click on the node in the one-line diagram. Deselect Node to

change to Bus.



6.1.11 Group & Ungroup To group elements; first select the elements, then use the Tools menu bar or right-click, and then select group from the drop down list. To ungroup, click on any element in the group and ungroup.

6.1.12 Composite Networks Among PowerStation’s most powerful features are the composite networks. Composite networks allow you to graphically nest network elements within themselves to any arbitrary nesting depths, i.e., a composite network can contain, within itself, other composite networks. This feature provides you with the capability to construct complex electrical networks while still maintaining a clean, uncluttered diagram that displays what you want to emphasize - yet the next level of details are within easy reach of your mouse.

Composite Networks (PowerStation 2.0 and Prior Release) These networks have only four pins for external and internal connections. Externally, these pins can only be connected to buses. Internally, these pins can be connected to branches.

Old Composite Network Network1 with top pin connected to bus Sub3



You can replace the old composite networks with the new ones by following these steps: • Cut all the elements inside of the old composite network. • Add a new composite network in place of the old one. • Open the new composite network. • Move the elements from the Dumpster into the new composite network.

Composite Networks (PowerStation 3.0 and Newer Release) Composite networks have up to 20 entry points (pins). These are top pin, left pins, right pins, and bottom pin. Externally, these pins can only be connected to elements. Once a pin gets connected to an element, it becomes a proxy for that element, i.e., you can connect the internal pin just like you were connecting the element to other elements. The external pins and internal pins are the same points. They represent the connecting points of the composite network to the outside and inside. The internal pin of the composite network is the starting point for the composite network internal connection. This element graphically represents the connecting point of the composite network to the outside system. This connecting point is not considered as an element for studies. When you open a composite network for the first time, all pins are shown in their relative positions. You can move these internal pins anywhere inside the composite network. If there is an external connection to a pin, the ID of the connected element is displayed. If there is no external bus connection, the pins indicate its position (Left1, Rt5, Bot, etc.). If there is an external connection, the ID of the externally connected element is displayed.

A Composite Network with 12 pins



You can hide the uncounted internal pins by using the right-click menu and selecting Hide Unconnected Pins.

You may place composite networks anywhere on a one-line diagram or within other composite networks. These nested composite networks are part of the overall one-line diagram of the system. All studies that are run include all the elements and connections nested within all composite networks and composite motors. Note that when you are working with a particular one-line diagram presentation, display attributes of composite networks and composite motors are saved along with the one-line diagram presentations, i.e., composite networks are treated the same as the one-line diagram. The ID (name) of a composite network can be changed by three methods: • <Ctrl>+double-click on the composite network symbol from the one-line diagram • Open the composite network and double-click on the background where no device exists • Double-click on it from the Project View (under Components, Networks Composite) to bring up the

Composite Network Editor. You can change the ID to any unique 12-character name from the Composite Network Editor.

The following steps are used to move a subsystem (group of elements and connections) from the one-line diagram to a composite network:



Select the desired elements including their connections using rubber band and <Ctrl>+click Press Delete to cut the elements into a Dumpster Cell Activate the composite network by double-clicking on it Right-click inside the composite network and select Move From

6.1.13 Composite Motors (AC & DC) Composite motors are used as a tool to group motors and loads in the system. The elements you can include inside the AC Composite Motors are: • • • • • • • • • • •

• • • • • • • • • • •

• • • •

• • • •

3φ Induction Motors 3φ Synchronous Motors 1φ Induction Motors Static Loads MOV 3φ Lumped Loads 1φ Lumped Loads Capacitors Filters Circuit Breakers Contactors

Fuses Switches, Single Pole Single Throw Current Transformers Potential Transformers Voltmeters Ammeters Multi-meters Overcurrent Relays Frequency Relays Voltage Relays Composite Motors

The elements you can include inside the DC Composite Motors are:

DC Motors DC Static Loads DC Lumped Loads DC Elementary Diagrams

DC Circuit Breakers DC Fuses DC Switches, Single Throw DC Composite Motors

The number of levels that you can nest composite motors inside composite motors is unlimited. Composite motors have 2 single pins that can be connected externally to buses only, i.e., directly connected to buses or indirectly through protective devices. Internally, this pin looks and behaves like the external bus. Other than this limitation and the types of elements that you can include inside a composite motor, the user interface characteristics of composite motors are the same as composite networks. Here is an example of composite motor Mtr C1, which is connected to bus MCC 1 inside the composite network Sub2.

AC Composite Motor Mtr C1 with four motors, one static load, and one composite motor


One-Line Diagram Display Options

6.2 Display Options PowerStation allows different display options for the one-line diagram in different modes. Here we describe the display options for Edit mode. The display options for study modes are described in their respective sections.

6.2.1 AC Page This page includes options for displaying info annotations for AC elements.

Color Select the color for information annotations to be displayed on the one-line diagram.

ID Select the check boxes under this heading to display the ID of the selected AC elements on the one-line diagram.



Rating Select the check boxes under this heading to display the ratings of the selected AC elements on the one-line diagram.

Device Type Rating Generator kW / MW Power Grid (Utility) MVAsc Motor HP / kW Load / Panel kVA / MVA Transformer kVA / MVA Branch, Impedance Base MVA Branch, Reactor Continuous Amps Cable / Line # of Cables - # of Conductor / Cable - Size Bus kA Bracing Node Bus Bracing (kA) CB Rated Interrupting (kA) Fuse Interrupting (ka) Relay 50/51 for Overcurrent Relays PT & CT Transformer Rated Turn Ratio

kV Select the check boxes under this heading to display the rated or nominal voltages of the selected elements on the one-line diagram. For cables/lines, the kV check box is replaced by the button. Click on this button to display the cable/line conductor type on the one-line diagram.

A Select the check boxes under this heading to display the ampere ratings (continuous or full-load ampere) of the selected elements on the one-line diagram. For cables/lines, the Amp check box is replaced by the button. Click on this button to display the cable/line length on the one-line diagram.

Z Select the check boxes under this heading to display the rated impedance of the selected AC elements on the one-line diagram.

Device Type Impedance Generator Subtransient reactance Xd” Power Grid (Utility) Positive Sequence Impedance in % of 100 MVA (R + j X) Motor % LRC Transformer Positive Sequence Impedance (R + j X per unit length) Branch, Impedance Impedance in ohms or % Branch, Reactor Impedance in ohms Cable / Line Positive Sequence Impedance (R + j X in ohms or per unit length)



D-Y Select the check boxes under this heading to display the connection types of the selected elements on the one-line diagram. For transformers, the operating tap settings for primary, secondary, and tertiary windings are also displayed. The operating tap setting consists of the fixed taps plus the tap position of the LTC.

Use Default Options Click on this check box to use PowerStation’s default display options.

Grid Size Enter the size of the one-line diagram grid.

22.1.1 AC-DC Page This page includes options for displaying info annotations for AC-DC elements and composite networks.




ID Select the check boxes under this heading to display the IDs of the selected AC-DC elements on the one-line diagram.

Rating Select the check boxes under this heading to display the ratings of the selected AC-DC elements on the one-line diagram.

Device Type Rating Charger AC kVA & DC kW (or MVA / MW) Inverter DC kW & AC kVA (or MW / MVA) UPS kVA VFD HP / kW

kV Click on the check boxes under this heading to display the rated or nominal voltages of the selected elements on the one-line diagram.

A Click on the check boxes under this heading to display the ampere ratings of the selected elements on the one-line diagram.

Device Type Amp Charger AC FLA & DC FLA Inverter DC FLA & AC FLA UPS Input, output, & DC FLA

Composite Network Click on this check box to display the composite network IDs on the one-line diagram, then select the color in which the IDs will be displayed.




6.2.2 DC Page This page includes options for displaying info annotations for DC elements.


ID Select the check boxes under this heading to display the IDs of the selected DC elements on the one-line diagram.

Rating Select the check boxes under this heading to display the ratings of the selected DC elements on the one-line diagram.

Device Type Rating Battery Ampere Hour Motor HP / kW Load kW / MW Elementary Diagram kW / MW Converter kW / MW Cable # of Cables - # of Conductor / Cable - Size



kV Select the check boxes under this heading to display the rated or nominal voltages of the selected elements on the one-line diagram. For cables, the kV check box is replaced by the button. Click on this button to display the conductor type on the one-line diagram.

A Select the check boxes under this heading to display the ampere ratings of the selected elements on the one-line diagram. For cables, the Amp check box is replaced by the button. Click on this button to display the cable length (one way) on the one-line diagram.

Z Select the check boxes under this heading to display the impedance values of the cables and impedance branches on the one-line diagram.

Composite Motor Click on this check box to display the DC composite motor IDs on the one-line diagram, then select the color in which the IDs will be displayed.



One-Line Diagram Default Display Options

6.3 Default Display Options PowerStation allows different display options for the one-line diagram in different modes. Here we describe the display options for Edit mode. Display options for study modes are described in their respective sections.


ID Select the check boxes under this heading to display the listed elements’ ID on the one-line diagram.


One-Line Diagram Default Display Options

Rating Select the check boxes under this heading to display the listed elements’ ratings on the one-line diagram.

Device Type Displayed Rating 3-Winding Transformer rated kVA or MVA of primary, secondary, and tertiary 2-Winding Transformer rated kVA or MVA Reactor impedance in ohm Impedance R and X in percent or ohm Cable and Transmission Line Click-on button to display the number of cables,

conductors per cable, and size

kV Select the check boxes under this heading to display the listed elements’ voltages in kV on the one-line diagram. For cables/lines the rating check box is replaced by button. Click-on this button to display the cable/line conductor type on the one-line diagram.

A Select the check boxes under this heading to display the listed elements’ ampere ratings on the one-line diagram. For cables/lines the rating check box is replaced by button. Click-on this button to display the cable/line length on the one-line diagram.

Z Select the check boxes under this heading to display the listed elements’ impedance values on the one-line diagram.

D-Y Select the check boxes under this heading to display the listed elements’ connection type on the one-line diagram.

Grid Size Enter a size for the one-line diagram grid to be displayed. The default size is 16. Larger numbers will produce larger areas inside each grid block.


One-Line Diagram Annotation Font

6.4 Annotation Font From the One-Line Diagram toolbar, select Default, and then click on Fonts to arrive at the Annotation Font dialog box. This dialog box allows for the customization of font type, style, and size of the text used to ID and describe elements on the One-Line Diagram.

ID Select the font type, style, and size to display all IDs selected in display options.

Ratings Select the font type, style, and size to display all ratings selected in display options.

Voltage Select the font type, style, and size to display all voltages selected in display options.

Impedance Select the font type, style, and size to display all impedance selected in display options.

Current Select the font type, style, and size to display all currents selected in display options.

Delta-Y Select the font type, style, and size to display all connection types selected in display options.

Bus kV & A Select the font type, style, and size to display study results selected in their respective display options such as bus operating voltages for load flow studies and bus short-circuit currents for short-circuit analysis

Branch Select the font type, style, and size to display all branch flows selected in their respective display options.


One-Line Diagram Result Annotation

6.5 Result Annotation In the PowerStation one-line diagram, the direction of the arrows for power flow results matches the positive direction of the real power flows (kW). In the output reports, however, the printed power flow values indicate flows from the “From Bus” to the “To Bus.” For three-winding transformers, the arrow indicates the positive direction of the real power flow (kW), i.e., positive kW can be going into or coming out from each winding. However, in the output reports the printed power flow values indicate flows from the “From Bus” to the “To Bus.” A three-winding transformer may be represented as a star or a delta circuit in the calculation modules. In the ANSI Short-Circuit Device Duty calculation, a three-winding transformer is represented as a star circuit. A center bus is added to the system that takes the transformer ID as its bus ID and the primary winding kV as its nominal kV. In this case, the output report prints the short-circuit current contributions between the three terminal buses and the center bus.

Contributions =========================

From Bus To Bus ID ID

------------ ------------ Bus P Total

XFMR 1 Bus P

Bus S XFMR 1 Bus T XFMR 1

For the above example, the following fault current contributions are printed for a fault at “Bus P.”

From Bus To Bus ID ID

------------ ------------ Bus P Bus S

Bus P Bus T

Bus S Bus T

In all the other calculation modules, a three-winding transformer is represented as a delta circuit. The printed power flows (or currents) are reported between two of the three terminal buses of the transformer.


Date post:	14-Apr-2018
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