Knowledge Base

Optimal Power Flow with Load Dispatch

Download the example files. These examples show how Simulator’s Optimal Power Flow (OPF) may be used with dispatchable loads to relive transmission overloading. First, the OPF may be used with the minimum control change objective function. Here, the “cost” of changing a control (generator or load output) is the same for each MW of change […]

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January 5, 2015

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

Interactive Tutorial

This tutorial features a fictitious power system the size of a medium-sized city. The simulations explore several facets of power system planning and operations, including: addition or removal of transmission facilities addition, de-rating, or removal of generating resources demand response and use of customer-owned generation, such as rooftop solar physical or cyber attack on a […]

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December 3, 2014

Transformer Time-Series for NERC Benchmark GMD Event and Supplemental GMD Event

The following input files may be loaded to automatically simulate the time-series surface electric fields in the  NERC Benchmark Geomagnetic Disturbance Event (May 12, 2016) and Supplemental Event. Benchmark Event (updated November 2, 2017) Supplemental Event (updated June 8, 2018) From PowerWorld Simulator GIC, choose the “Spatially Uniform Time-Varying E-Field” Calculation Mode. Then point to the downloaded CSV file in the “Time-Varying […]

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October 10, 2014

Example of Geomagnetic Induced Current (GIC) Calculations

Appendix II of the Application Guide: Computing Geomagnetically-Induced Current in the Bulk-Power System published by the North American Electric Reliability Corporation shows calculations of GIC currents and related quantities for a hypothetical power system with 6 buses and 3 substations. This system is available here for use in PowerWorld Simulator. These may be examined in the free […]

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July 18, 2014

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