Knowledge Base

How to specify different Voltage Deviation Limits for different buses in Contingency Analysis

PowerWorld Simulator allows you to monitor for violations based on the change in a value relative to the reference state (base case).  This was already covered in the knowledge base article at WECC Post Contingency Voltage Drop Criteria Monitoring.  This works well if you have the same percentage drop violation for all buses in your system. […]

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January 2, 2015

User Defined Model Documentation

Sample Files and Code For the Basic User: Sample DLLs and Test Case for Exciter, Governor, Machine, and Stabilizer For the Advanced Developer: GitHub Repository [recommended to Fork and continue your custom development]  Has 64 bit build configured for C++ projects in Visual Studio 2019 Sample code projects for Exciter, Governor, Machine, Stabilizer, and Load  […]

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June 16, 2014

Registering SimAuto

SimAuto must be registered in the Windows Registry before it can be referenced from external programming platforms. This normally happens automatically when Simulator is installed, but may need to be performed again if there is a hardware change or if you are working with multiple versions of Simulator. (Only one version of SimAuto may be […]

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March 20, 2014

Physical Security Assessment

On March 7, 2014, FERC issued an order directing NERC “to submit for approval one or more Reliability Standards that will require certain registered entities to take steps or demonstrate that they have taken steps to address physical security risks and vulnerabilities related to the reliable operation of the Bulk-Power System.” PowerWorld Simulator can easily […]

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March 12, 2014

D-FACTS Quick-Start Tutorial

Distributed Flexible AC Transmission System (D-FACTS) devices or “smart wires” change the effective line impedance of the transmission line on which they are installed.  The Knowledge Base Article is a quick-start tutorial that introduces D-FACTS devices and how to use them in PowerWorld Simulator.  This is a short hands-on training session with slides and sample cases. […]

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January 15, 2014

Comparing Contingency Results

The Knowledge Base Article will cover how to take several contingency analysis runs done on the same system topology under different conditions and then build an Microsoft Access database that uses a query to compare the results across different contingency runs. Creating a Test Example of Three Different Contingency Analysis Runs on the same case […]

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November 15, 2013

WECC Post Contingency Voltage Drop Criteria Monitoring

  Note, this knowledge base article provides a very simple feature for monitoring for voltage deviation monitoring, however if you need more flexibility than is shown below, there are two other knowledge base articles related to this one which provide much more flexibility than is shown below.  Links to these knowledge base articles are as follows. How […]

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August 27, 2013

Motor Load Starting using Transient Stability

Note: Download a small sample case at the following link which is used in this demonstrate: MotorStart Case Note: Starting in the July 10, 2013 patch of Simulator 17, a modification was made to automatically change the integration time step for the entire simulation when induction motors (loads) or induction machine (generators) drop below 0.1 per […]

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July 2, 2013

Calculating the Net Reactive Capability Curve of a Renewable Energy Plant and Subsystem

When studying a system of small renewable generators that are all hooked up to the power system through one interconnection point, some PowerWorld users have been interested in calculating the net reactive capability curve seen at the utility interconnection point.  As an example consider the power system below which has the following characteristics. Three solar […]

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June 6, 2013

Case Study in Using Auxiliary File Scripting with Advanced Filters, Custom Floats, and Expressions

This is a case study that demonstrates how to automate the process of replicating the net reactive capability curve from a set of renewable generators behind a small distribution system which is connected to a single utility bus.  This serves as a wonderful example for demonstrating several topics. Use of auxiliary files to automate processes […]

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June 6, 2013