Earth Resistivity Model for GIC Calculations
Updated February 8, 2022 with versions that do not contain dashes in the region set names PowerWorld Simulator GIC can automatically incorporate scaling factors for geomagnetic latitude and earth resistivity according to NERC TPL-007-2 – Transmission System Planned Performance for Geomagnetic Disturbance Events (October 2017). The earth resistivity models must be loaded from an auxiliary file. […]
January 31, 2018
Distributed Computing Setup
Distributed Computation Configuration To quickly check the configuration of a given machine, use the Distributed Computation Configuration utility (DistCompCfg.exe in the installation directory of the Simulator version you would like to configure for Distributed use). If a step is not configured correctly, the checkbox will not be marked. All machines involved in a Distributed Computing […]
Tags: FAQ,How-to,SimAuto,Simulator
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 […]
Tags: Cases,How-to,Presentation,Script,Transient Stability,Tutorial,Video
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 […]
Tags: How-to,Simulator,Transient Stability,Tutorial
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 […]
Tags: GIC,How-to,Simulator,Tutorial
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 […]
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 […]
Tags: How-to,Script,SimAuto,Simulator
February 1, 2016
Coordinated Initialization of the Load Distribution Equivalent, Load Characteristic, and Load Distributed Generation Models
Generator modeling in transient stability simulation software has been modularized for decades. Generators are modeled using a Machine Model, Exciter, Governor, Stabilizer, etc. Several new modules for generators have been added in the past few years specifically for wind turbine and renewable energy modeling. Load models however had remained stuck with only 2 models: a load […]
Tags: Simulator,Technical Papers,Transient Stability
January 8, 2016
Derivation of the GENTPJ/GENTPF model from the GENROU/GENSAL
Relationship of GENROU, GENSAL, GENTPF, GENTPJ.pdf A set of presentation slides on this topic is also available at this link: Slides on GENROU-GENSAL-GENTPF-GENTPJ_Slides.pdf A fundamental derivation of a GENROU and GENSAL models can found in Chapter 3 of the book Power System Dynamics and Stability by Peter Sauer and M.A. Pai from 1998. This derivation […]
Tags: Simulator,Technical Papers,Transient Stability
October 22, 2015
Voltage Compensation Data Input Errors leading to Transient Instability
Voltage Compensation can be modeled in a few different ways in PowerWorld Simulator. First, there are Rcomp and Xcomp values which can be specified with the various synchronous machine models such as GENROU, GENSAL, GENTPF, and GENTPJ. In addition, you can add specific other generator models to represent compensation: COMP, CCOMP, COMPCC, CCOMP4, and IEEEVC. Without […]
Tags: Simulator,Transient Stability
October 22, 2015