PowerWorld Simulator 17 Whatâ€™s New in Simulator Mark Laufenberg

[email protected]://www.powerworld.com

2001 South First StreetChampaign, Illinois 61820+1 (217) 384.6330

PowerWorld Simulator 17What’s New in Simulator

Mark [email protected]‐384‐6330 ext. 10

2© 2013 PowerWorld CorporationWhat’s new in Simulator 17?

• Application Button has been replaced with a File Menu (Similar to Office 2010 suite)

• Ribbon Settings have new color options Black, Blue, Caramel, Green, Pink, and Silver

Simulator Look and Feel


Ribbon Settings Colors


• Our help documentation is now directly on our website in HTML form– http://powerworld.com/WebHelp/– Default behavior in Simulator is to access the web help on our website

• Allows the user access to help on new features immediately

• Gives PowerWorld staff incentive to update the help when building patches in the future

– Installation of Simulator will also install the help on your hard drive in “$INSTALLDIR\Help”

Simulator Help


Simulator Help Online


• Online Training

Simulator Training Materials


Freely Available Training Materials• All PowerPoint slide training material are available online


• Available in following dialogs presently– Simulator Options Dialog– Transient Stability Dialog– Contingency Analysis Dialog

• Format of Hint– Same description you see when choosing the “Export Object

Fields” to Excel– Also tack on the object type and variable name you would see in

an AUX file storing the option• We think this feature is very useful for helping betting

document the program– Do we need a way to turn it off?– Maybe only show object type and variable name if case info

option for showing variable names is chosen

Start of Adding Better Pop‐up Hints for Options on Tool Dialogs


Helpful Hints: PowerWorld Simulator Options


• New Contingency Actions– Change Area AGC status and the Area Slack designation– Multi‐terminal DC Converter Open, Close, Set To and Change By

• Post‐contingency auxiliary file entry on Contingency Record and Contingency Options– Instead of a file, a script command can be entered as well

• Improvements of “What Actually Occurred”– Provides information of whether the action came from a

Contingency Block or Global Action– New Tab in GUI shows a list of What Actually Occurred– Adding better descriptions

Contingency Analysis


• Custom Monitor Changes– Allow contingency record itself to be monitored

• Show as violation islanded generation or load• Show as violation those exceeding dropped gen

– Added separate column to show the number of Custom Violations for the contingency (not included in Violations sum)

– Added ability to show Custom monitors on the Contingency Violation Matrices

– Added option to specify that violations never be reported if the value doesn’t increase (or decrease) by a certain amount

Contingency Analysis:Custom Monitoring


RAS models before Version 17• Typically the RAS model is modeled explicitly with the line outage

contingency that triggers the RAS to occur– Just automatically apply the gen drop for instance for a particular line

outage– Possibly make a Contingency Block that performs this and refer to

Contingency Block from outages that use this RAS• Limitations of this

– If line is out in the reference state you must modify your contingency definitions

• Otherwise the RAS is initiated in contingency though no change• Data maintenance issue

– Will not capture the cascading outage that trigger RAS when• Line A overloads Trip Line A causes Line B to trip which triggers RAS

associated with Line B• Basically, unless you have all these RAS and relays enabled in your contingency

run, the Simulation will NOT show a cascading outage such as occurred in the Southwest Blackout


• Contingency Element Option– Evaluate in Reference State

option for Model Expression• Model Condition Option

– Evaluate in Contingency Reference State– Disable if True in Contingency Reference State

• Example: Model Filter that takes the OR of three Model Conditions that test whether particular lines are Open

– As soon as one of the lines is opened by a contingency, then the model filter will evaluate to TRUE and you’ll trigger appropriate actions.

– Works great as long as all three lines are CLOSED in the Reference State

Contingency Analysis:Reference State Evaluations

Line A Open (TRUE)

Line B Open (FALSE)Line C Open (FALSE)

TRUELine Loss

Contingency Opening Line A

Line A Open (FALSE)


FALSELine Loss

Reference State


• What if Line A is OPEN in the Reference State?– This logic will end up returning TRUE for EVERY contingency

• Disable if TRUE in Reference State Option means– The Model Condition is completely ignored!– It’s like the Model Condition doesn’t even exist.– The result of this will depend on the type of logic the model

condition is fed into

Contingency Analysis:Disable if TRUE in Reference State

Line A Open (TRUE)


TRUELine Loss

Reference State

Line A Open (TRUE)


FALSELine Loss

Contingency Opening Line A


• Reminder– Global Contingency Actions are a list of contingency elements which are included as part of every contingency solution

• Implication:– Specify an action as part of the Global Contingency Actions using the Disable if TRUE in Reference Statechoice

– This allows you to model a global “RAS” in the power flow contingency action

Contingency Analysis:Disable if TRUE in Reference State


NEW

• TOPOLOGYCHECK Contingency Element Status. • Contingency Processing now goes as follows

1. Apply ALWAYS actions and true CHECK actions2. Update topology (branch, bus status)3. Apply true TOPOLOGYCHECK actions4. Solve power flow5. Apply true POSTCHECK actions

and true TOPOLOGYCHECK actions6. If any POSTCHECK or TOPOLOGYCHECK actions are

done then repeat steps 2‐5• Note: TOPOLOGYCHECK should only be used with Model Conditions related to bus/branch statuses

Contingency Analysis:TOPOLOGYCHECK


• Accounting for Overlapping Generation when using merit‐order generation dropping– Drop 500 MW from Injection Group #1– Drop 400 MW from Injection Group #2– Order matters: Group #1 will drop 500 MW, but when going to drop Group #2, if there is overlap and 200 MW of generation in Group #2 was already dropped due to Group #1 dropping, then only an additional 200 MW will be dropped.

– You won’t always get 900 MW of dropping.

• Note: default behavior is to take into account this overlap. This may be turned off in the Basic Contingency Modeling options

Contingency Analysis:Overlapping Gen Drop


• Cleaning up nomenclature and removing the word “Custom” when it’s just confusing

• Custom Expression Expression– Applies to one object type– Gives a function of the columns of one object

• Custom String Expression String Expression• Custom Model Expression Model Expression

– Applies to the entire model– Gives a function of variables from entire model

CustomExpressions, Model Expression, etc…


• Better integration of labels throughout Simulator– Added ability to default to open all onelines by label, name_kv, or number

– Allows you to build onelines that link via label to a full‐topology model and automatically open all onelines to link this way

– Added option to specify Key Fields type in toolbar

Integrated Topology Processing


Branch Status ConfusionModification started in Version 16

• Planning software and bus‐branch models– Two Fields: Status and Online– Status: an explicit field to determine if a device is closed/open (because breakers are not modeled)

– Online: whether or not a device is energized is affected by the status of branches

• EMS models– Breaker or disconnect status determines the status of other devices

– No explicit status field for other devices (Generators, Loads, Lines, Transformers, etc.)

• When talking about RAS why do we care?– Triggering of RAS is based on a change in line status


Device Status Confusion• Typically, when using a full‐topology model, Status = Closed for non‐switching devices (Generators, Loads, Lines, etc.)– Hybrid model with only parts of the system modeled with breaker detail can still use Status field of a non‐switching device

• Actual status of a device is confusing for those accustomed to a planning model– Status of a line is really derived from other information (breaker and disconnect statuses)

– This can be a problem for RAS which is based on the Status of a line

• Clearly what RAS considers the “status of a line” is not the same as the software’s definition


Derived Status Determination• Note: whether a branch is online has no impact on the derived status determination

• Logic of Derived Status– If Status = OPEN Derived Status = OPEN– Else

• Search starting at each device terminals across branches with Status = CLOSED looking for a closed breaker or a load or gen (Note: switched shunts do NOT count here!)

• If search successful at both ends Derived Status = CLOSED

• Else If search successful at FROM end only Derived Status = OPEN TO

• Else If search successful at TO end only Derived Status = OPEN FROM

• Else Derived Status = OPEN


Derived Status

FROM TO

FROM TO

FROM TO

FROM TO

Situation A1OPEN

Situation A2OPEN FROM

Situation A3OPEN TO

Situation A4CLOSED

Note again: whether a line is online is not relevant


Derived Online(This is new feature)

• Logic of Derived Online– If Online = NO, Derived Online = OPEN– Else

• Derived Online = Derived Status• (They are the same!)


• In order for a Line End to be considered CLOSED the search of topology must find– A closed circuit breaker (true before)– Past the closed CB, there must be an actual device of consequence such as

• Branch (Transmission line, transformer, series cap)• Generator• Load• Note: Shunts do NOT count for this test

• Also, when performing topology search, ignore Breakers directly in parallel with a Line, Transformer or Series Cap – Meant to ensure bypass breakers are ignored

Refinement of Derived Status and Derived Online (2012)


Refinement of Derived Status and Derived Online (2012)

• Following are still considered CLOSED

• Following are now considered OPEN TO

Some closed branch

Load or generation

TransmissionLine

TransmissionLine

TransmissionLine

TransmissionLine

TransmissionLine

TransmissionLine

TransmissionLine

TransmissionLine

CLOSEDat from end CLOSED

at to end

OPENat to end

CLOSEDat from end

Ignore breaker in parallel

Nothing connected

Shunt doesn’t count as “actual” device


• Can now refer to Expressions by name rather than number location of the field. – CustomExpression:0CustomExpression:My Name– Requires specification of name of expression

• Can now refer to custom fields (integers, singles, and strings) and calculated fields by name rather than number location of the field. – BGCalcField:0 BGCalcField:My Calc Field Name– CustomSingle:0 CustomSingle:My Caption– CustomInteger:0 CustomInteger:My Caption– Requires user to specify Field Captions or

Header Captions in the Custom Field Descriptions.• In output‐based script commands and SimAuto commands, can refer to

number location as All– Scripts: SaveData(), SaveDataWithExtra(), SaveObjectFields(), SendToExcel()– Allows you to specify all variables with different locations– Useful for matrix‐based fields such as

• Multiple TLR sensitivities (Bus field MultBusTLRSens:All)• Multiple PTDF Sensitivities (Branch Field LinePTDFMult:All)

Auxiliary Files


• New object POWERWORLDSESSION– Provides access via script or SimAuto to information like

• List of Slack Buses and their outputs• Simulator Version Number • Case Descriptions• System Date, Time• List of Add‐ons available

• New object DEFDRAWONELINE (Default Drawing Values global options_– Provides access via script to information like

• Font (Name, Color, Style, Size)• Checkbox regarding default font size use• Oneline default color, Bus View Background

• Script commands SaveCase(), WriteTextToFile(), and SaveDataWithExtra(), can now use special strings @DATETIME, @DATE, @TIME, @BUILDDATE, and @VERSION to build appropriate files names

Auxiliary Files


• Send to Excel feature now supports writing out up to 16,384 columns to Excel versions 2007 and later (otherwise it splits export up into separate sheets)

• New Branch field for showing the difference of terminal bus angles (From Angle – To Angle)

• Model Conditions, Model Filters, and Model Expressions have a Memo field to help identify what RAS/SPS they belong to.

• Added more fields for comparison in Difference Flows for transformer fields on the transformer base

• Added ability to show substation latitude/longitude for generators, loads, and shunts.

Case Information Displays


• Continued support of PTI RAW file formats up through version 33

• Continue to support reading and writing EPC files• Modified reading of RAW and EPC files so that the default

generator participation factor is now set based on the PMaxMW value (used to be MVA base)– WECC cases were showing many generators with 100 MVA Base

• Continued enhancement of reading the hdbexport CSV file format for getting full topology models from Areva EMS systems– More fields recognized– If header is available, we automatically parse this for field order

(previously Simulator required fields in hard‐coded order)• Started adding support for the UCTE (European) file format

File Format Read/Write


• Enter a file path with oneline diagrams in it– PowerWorld PWD– PowerWorld AXD– Areva DDL– Allows you to look through 100s of onelines through one diagram interface

Oneline Viewer Tool


• Pie Charts/Gauges based on a Model Expression• Background Arc objects• Added new optional arrow with any numeric field

• Better multi‐section line support– KML file– Convert Background line– Adding new multi‐section via drawing on oneline

Oneline


• Screen Layer Drop‐Down– Added Hide All and Show All menu items

• Folder structure for Saved Views based on names– Use backslashes in the name of a Saved View to force the Ribbon Drop‐down to use a folder structure

• Filter1\SubFolderA\MyView• Cities\Las Vegas• States\Nevada

OnelinesScreen Layers and Saved Views


• Added field for Center X and Center Y for various objects.– Often the “X,Y” coordinates are for the upper left coordinate of a

display object• Can now specify a Stub Size of 0 and have this still space out

lines entering a bus/substation but not include a stub• Oneline link display object can now refer to a script

command in addition to a oneline or auxiliary file (clicking on link will run script when in Run Mode)

• Pie Chart Local Menu Option to change Limit Monitoring Normal Rating Set

Onelines


• Added a new D‐FACTS object– New devices available for installation– Implemented for Smart Wire Grid, Inc who manufactures these devices

– Most basic models can insert series impedance on a transmission line changing system flows

– Will be discussed in separate presentation later

Distributed Flexible AC Transmission system: D‐FACTS


• Custom Regulation Settings– Allows the output of a switched shunt to be made equal to any model expression

– Be careful!• Expression should only be a function of variables that are constant during the inner power flow solution and voltage control loops

• Example: Generator MW outputs

Switched Shunt Options


• New Control Mode: SVC• Provides additional complex control options under tab Control Options\SVC Control Options

• Implements per the WECC SVC power flow guidelines for SVSMO1, SVSMO2, and SVSMO3

Switched Shunt Options:SVC Control Mode


• The plotting features similar to Transient Stability have been fully implemented– Added the ability to plot the pre‐contingency base case values on the horizontal axis

– Added Import/Export MW values for horizontal axis– Source code is common between tools, so changes in Transient Plotting automatically appear in PV/QV

• Renamed the previous plots as “Legacy Plots”

PV and QV Curves


• Added a new Bus Voltage Angle constraint as a constraint to be enforced

• Added to help merge a smaller footprint detailed full‐topology models with a larger footprint planning model to create a near real‐time case appropriate for transient stability simulations– Work done with ISO – New England

Optimal Power Flow


• On Multiple Meters, Single Control Change tab, added ability to show the sensitivity to a line impedance change

• New tab, Multiple Meters, Multiple Control Changes– Adds ability to show the sensitivities for multiple metered points due to multiple control changes

– Control Devices appear as columns– Metered points as rows of various sheets

Sensitivity Analysis:Flow and Voltage Sensitivities Dialog


• Much better support for voltage source converter machine models such as those for wind turbines and SVCs

• Continued support of error checking of model data

• Transient Stability Plots– Improved interaction with plots when right‐clicking– Added right‐click option on a plot series to open the bus view

Transient Model Modification


• Added two new fields to show as results with each transient contingency– Tripped Load MW (based on steady state MW)– Tripped Generation MW (based on steady state MW)

• Insert Apply and Clear Fault button now creates three events separate events for clearing FROM and TO ends

• Option for checking Limit Monitor Results to delay specified time after last event

Transient Stability


• Violations for a particular contingency• List of all Violations under all contingencies• List of Contingency Definitions for all contingencies

Transient StabilityDialog Layout Changes


• Optionally look at results for multiple contingencies simultaneously on tables of Minimum/Maximum Values, Summary, Events, and Solution Details

Transient StabilityDialog Layout Changes

Added ButtonClear Results in RAM


• Generator Machine Models– GENDCO – InfiniteBusSignalGen

• Load Models– CMPLDW, CMPLDWNF– Added support for Load Model Groups– Will be discussed in separate presentation later

• Line Relay Models– Over/Under Frequency or Voltage: TLIN1– Out‐Of‐Step models: OOSLEN, OOSLNQ– Impedance Relays: DISTR1, ZPOTT, ZDCB, ZLIN1, ZQLIN1, ZQLIN2– Time‐Inverse Over‐Current Relays: TIOCR1, LOCTI– FACRI_SC (Series Cap model for FACRI)– Will be discussed in separate presentation later

Transient StabilityNew Model Support


• DC Line Models– CD6 (appropriate for older model of Intermountain – Adelanto)– MTDC_PDCI, CONV_CELILO_E, CONV_CELILO_N, CONV_SYLMVAR

• Replicates user‐written EPCL code in pdci_ns.p and pdci_sn.p• Will be discussed in separate presentation later

• Switched Shunt Models– SVC models: SVSMO1, SVSMO2, SVSMO3– FACRI_SS (Shunt model for FACRI)

• Support for User‐Defined Models– Machines– Exciters– Governors– Stabilizers– Loads– Multi‐terminal DC records and Converters

Transient StabilityNew Model Support


• Geomagnetically Induced Currents (GIC)– Allows simulation of Geomagnetic Disturbances (GMD)

– Will be discussed in separate presentation later

• Scheduled Actions (Schedule)– Visualize scheduled outages and actions

New Add‐ons


• Feature requested by ISO New England– Used to visualize scheduled equipment outages– With specific formatting within a case

• CROW CSV files can be loaded directly• CROW = (Control Room Operations Window)

• Implemented with the flexibility for other applications– Possible extension to replace current Time Step tool, or just use as another tool

Scheduled Actions Add‐onBackground


• Scheduled Action– Defines an action (Open, Close, Set Field, etc)– Specifies the target device (Branch, Shunt, Load, Generator)– Links to Scheduled Action Group for time data

• Scheduled Action Status– Provides organizational tags for action groups– Allows certain types of action groups to be view‐only, never applying

the actions to the system

• Scheduled Action Group– Links a set of Scheduled Actions to a specific timeframe– Is tagged by a Scheduled Action Status, applied to all actions in the

group

Scheduled Actions New Case Objects


• Gantt Chart– Customized case information display showing the interaction of

Scheduled Action Groups over a specified timeframe• Time control

– Set the time window of interest with Start Time and End Time, set the display resolution, and set the specific time of interest

– Scroll over the specified time frame with the slider and arrows, set a specific view time with the calendar control

– Export a snapshot of the case at a specific point– Specify if active action groups should be applied to the case

• Animation control– Set Simulator to automatically scroll over the specified

timeframe, holding each time step for a specified period

Scheduled Actions GUI


Scheduled Actions GUI

Documents

PowerWorld Simulator 17 Whatâ€™s New in Simulator Mark Laufenberg