Knowledge Base

NERC Book of Flowgates

A spreadsheet template for importing interfaces from the NERC Book of Flowgates (2018 edition) may be downloaded here. To use the spreadsheet: Place the original data from the NERC Book of Flowgates in the gray shaded region (columns A through AE, beginning with the column headers in row 2.) Add additional rows as needed. Copy […]

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December 3, 2018

GIC Time Varying Electric Field Example

PowerWorld Simulator supports binary and text file formats for time and spatially-varying geomagnetic disturbance (GMD) surface electric field inputs. This format allows development of detailed solar storm scenarios based on historic events or 3D earth conductivity models. Sample (B3D binary format) based on June 22, 2015 event [1], over footprint of the U.S. State of […]

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October 15, 2018

New Feature: Data Check

A new feature was added to PowerWorld Simulator in the April 9, 2018 patch of Simulator 20 called “Data Checks”. Data checks grew out of work that PowerWorld customers Jonathan Young (Columbia Grid) and John Gross (Avista Utilities) performed building on PowerWorld Simulator’s features of Advanced Filters, Calculated Fields, Dynamic Formatting, Expression and String Expressions. […]

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August 3, 2018

Distributed Computing Setup

On both machines Ensure you have the latest Simulator build installed.  It should be the same version on both machines. Use the RegSimAuto utility in the Simulator installation directory to ensure the correct version of Simulator is registered. On the remote machine Set up a user that will be used to run distributed computation.  This […]

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September 14, 2017

Play-in time series measurement data with PlayInGen model for Power Plant Model Validation (PPMV)

PlayIn models can be found in the Transient Stability add-on of Simulator. Many dynamic models comprise of differential-algebraic equations that respond to perturbations in a simulation. In contrast, these PlayIn models are used to input time-series data into a transient run at specified time points. In Simulator, a PlayIn Configuration object can be used to store […]

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February 8, 2017

Adding Voltage Compensation to a Generator Model

Generator Voltage Compensation The input signal to Exciter models is a voltage signal (often labeled as either Vc or Ec on a block diagram).  In the simplest form this is just the per unit voltage magnitude of the terminal bus of the generator.  However, sometimes instead of using that voltage signal directly, the voltage is compensated by attempting to control […]

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October 19, 2016

EMP Simulation Example

PowerWorld Simulator version 20 includes the ability to analyze the E3 effects of a high-altitude electromagnetic pulse (HEMP) attack on the power system. Algorithms are based on public Oak Ridge National Laboratory research. To perform a sample analysis: Download this file. Extract the contents and open TX2000.pwb with PowerWorld Simulator (version 20 or higher). Open the […]

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June 24, 2016

Complete Case Auxiliary File Export Format Descriptions

PowerWorld’s Auxiliary File Format is very flexible in providing a mechanism for saving model information from PowerWorld Simulator.  It also provides a great way to share information with others.  This flexibility however has some downsides as puts additional burden on the user to know which things to save.  Many tools within PowerWorld Simulator overcome this by including […]

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May 13, 2016

Using Special Variables with Scripts or SimAuto

Some Simulator functions cause special variables to be created for storing results. The multiple element TLR sensitivity is a common example. Special variables are used to hold the sensitivities of flows on those multiple elements with respect to injections at various points. The number of special variables in use depends on the number of branches […]

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February 1, 2016

Using Contingency Categories for monitoring of different voltage deviation limits for different contingencies

Previous knowledge base articles have covered both Monitoring voltages for Post Contingency Voltage Drop Criteria Monitoring which covered how to monitor all buses in the system for a particular voltage drop. How to specify different Voltage Deviation Limits for different buses in Contingency Analysis which did a similar thing but allowed the criteria to be […]

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September 30, 2015

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