Optimizer - Larmia · 2018. 10. 10. · Optimizer helps you find deviations in the trend data and...

Optimizer

Optimizer © Larmia Control AB 2

Optimizer – Cont.

Optimizer helps you find deviations in the trend data and is a tool for creating

summary reports for e.g. energy usage. Reports are designed to find

deviations in the daily operation. Optimizer calculates grades for all the sub-

systems in the property so the operator easily can find the problem areas.

Optimizer complements the traditional SCADA software with a tool that

quickly finds errors that are normally hard and time consuming to find.

Examples:

- Are there any leaking valves?

- Are the time schedules correct for all the sub-systems?

- Is the energy consumption correct?


Reports

Reports are designed to get a good overview on how, for example, an air

handlig unit it running and to find deviations within the report.

Values that deviate from its limits are displayed in red in the reports.

The reports are viewed in a standard web browser.


Reports – Operational och energy reports

Operational reports display values and deviations for e.g.:

- Substations

- Heating groups

- Air handling units

- Chillers

Energy reports are used to monitor and present the water and energy

consumption in the property. Examples:

- Yearly reports with degree day correction

- Energy profile charts

- Charts for supervising the ideal values of the water and energy consumption


Reports – Weekly and yearly reports

One way of structuring the reports is to create weekly reports that present

values on a day-to-day basis for the week, and yearly reports that present

values on a month-to-month basis.

This approach lets you see values for days, weeks, months and years.


Reports – What is a deviation?

Deviations can be, for example:

- High runtimes

- Values that exceeds or deceeds a given limit

- Valve leakages

- High water or energy consumption

- A high number of control errors caused by a poorly adjusted regulator.


Reports – Suggested actions

Suggested actions can be included in the report to help the maintenance staff

to attend to the error which caused the deviation.

The maintenance staff can gradually add their own suggested actions.


Reports – Charts

The reports can also contain charts, such as:

- Bar charts

- Pie charts

- Trend curves

- Energy profile charts


Report example 1

This is a weekly report for an air

handling unit.

This report checks, among other

things:

- That the runtime for the unit is correct.

- That the regulation is correct.

- That the pumps are run at the right time

In this example there is a runtime

deviation (marked red). The

deviation is the result of an

incorrect setting in the time

schedule made by an operator.


Report example 2

This is a weekly report for a

heating system.

This report checks, among other

things :

- That the regulation is correct by

calculating the temperature deviation

between the actual value and the

setpoint. It also checks the stability of the

regulation by monitoring the standard

deviation and the number of control

errors.

- That the return temperature in the

system isn’t to high.

- That the valve doesn’t leak.

In this example there is a valve

leakage which also caused a high

return temperature.


Report example 3

This energy report monitors that

the plant doesn’t consume more

energy than its given ideal values.

The values in the report are from

an office building where the

ventilation is programmed to run

between 05:00 and 18:00. Because

there are different activities in the

building during ”Operation”

(weekdays) and ”No operation”

(nights and weekends) there is a

report for each operational case.

The report is split into four parts:

building electricity, heating,

cooling and hot water.


Report example 3 – Cont.

The consumption of building

electricity can be monitored by

dividing the consumption during

operation by the runtime. The

result is the mean effect for this

operational case, which in this case

is constant over the year.

The heating consumption is

monitored by dividing the

consumption by the runtime and

the degrees needed to heat the

outdoor air. The result is the

specific effect (kW/°C). This value

corresponds to the tangent/slope of

the curve in an energy profile chart

(see Report example 4).



The cooling consumption is

monitored using the same methods

as the heating.

The hot water consumption is

monitored by dividing the

consumption during operation by

the runtime. The result is the mean

effect for this operational case.



These ideal values can be

calculated.

Although it is usually simpler to:

- Check the present consumption

- Use limits to assert that the consumtion

doesn’t increase

- Lower the limits once the saving

measures has been performed.


Report example 4

This chart shows the energy profile

for the heating consumption (the

heating consumption in relation to

the outdoor temperature).

It is also possible to add, for

example, the runtime of an air

handling unit as a parameter to the

chart to further explain deviating

points.

Select a point to see the

consumption, temperature and

runtime for a specific date.


Report tree

Navigate the reports using a tree

view with flexible configuration

options.

The report tree contains the

following functions:

- Find a specific report.

- Modify constants, such as runtime limits

and costs, plus all the limits for the

available report checks.

- Re-calculate a report after modifying its

limits.


Report tree - Deviations

The report tree also shows if

reports have deviations, and also

the number of deviations.


Report tree - Grades

The report tree provides a quick

and easy overview of where the

problems are by color coding each

system by its grade. The color

ranges from green to yellow to red,

where red is a low grade (grade 1)

and green is a high grade (grade

5).

The grade is based on the number

of deviations the system has

registered in its reports for the last

seven days (this time is

adjustable).


Grade presentation

Grades for all the sub-systems are

easily accessible via a text file, for

easy presentation in a SCADA

software.

Every report can be opened from

other softwares using its specific

link.


The Optimizer Configuration tool

This software is used to define the

overall system structure and to

configure reports and charts.

It is also possible to create

functions, e.g. efficiency

calculations and runtime

calculations.

The programming language

contains regular arithmetic

expressions, logical operators and

several built-in functions.


The Optimizer Configuration tool - Reports

The reports are created in an

Excel-like environment.

It contains, among other things,

functions for calculation of:

- Mean values

- Consumption

- Degree day corrections

- Runtime calculations


The Optimizer Configuration tool - Templates

A created report can be saved as a

template.

All reports that are created using

this template are automatically

linked to the template, and all

changes to the template are

automatically reflected into all

linked reports.


The Optimizer Configuration tool – Standard systems

It is also possible to save an entire

system as a standard system.

A system can, for example, be an

air handling unit.

A system consists of a number of

inputs (trend data), constants,

functions and several reports.

If you have many similar systems

you can speed up the configuration

by using standard systems.


Trend database

We use the MySQL database for trend data storage.

The database has a table which contains all the points in the system.

For every point there is a description, unit etc.

Every point stores its trend data in its own table.

Date post:	23-Sep-2020
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Optimizer - Larmia · 2018. 10. 10. · Optimizer helps you find deviations in the trend data and...

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