Knowledge Base

Add GIC-Related Object Data Fields to Displays

This auxiliary file (updated October 4, 2022) will modify Case Information Displays for the following objects to include GIC-related data fields: Bus Generator Load Branch Inputs Transformer Controls Switched Shunts Line Shunts Substation DC Transmission Line MTDC Converters VSC DC Lines This enables easy viewing, editing, and sharing of GIC-related data between Simulator users, without […]

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October 4, 2022

3D File Format for GMD/HEMP Event Inputs

The B3D binary file format uses little-endian order and holds two-dimensional, time-varying data such as electric fields on the surface of the earth. Because the magnitude and direction can be non-uniform in time and space, it can be used where a 3D earth resistivity model is assumed. Applications in PowerWorld Simulator include geomagnetic disturbance (GMD) […]

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January 31, 2022

Aux Export Format Description for GIC Data

This auxiliary file (updated April 20, 2020) creates an Auxiliary File Export Format Description for Geomagnetic Induced Current (GIC) related data. The data include, but are not limited to, earth model geographic region definitions, GIC Options, GMD storm inputs, and power system object parameters such as geographic location, DC resistance, and transformer configuration and core […]

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November 13, 2019

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

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. […]

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January 31, 2018

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

GIC and Geographic Data View

Simulator’s Geographic Data View feature is uniquely suited for visualizing geomagnetically induced current (GIC) flows over a wide area. In the graphic below, each substation is depicted by a colored circle. The size of the circle is proportional to the GIC flowing through the neutral, while the color indicated whether GIC is flowing into or […]

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August 18, 2015

GIC and Substation Coordinates for Line Taps

To properly perform geomagnetic induced current (GIC) analysis, substation geographic coordinates (longitude, latitude) must be provided for all substations that contain terminals of transmission lines for which a GIC-induced equivalent DC voltage is applied. Generally this includes all lines greater than the minimum length and minimum voltage specified on the GIC Analysis Form. The need for coordinates […]

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March 26, 2015

Transformer GIC Thermal Response

This spreadsheet (revised November 3, 2017) includes sample formulas for calculating transformer winding and metallic parts hot spot temperatures as described in the NERC white papers Transformer Thermal Impact Assessment White Paper and Screening Criterion for Transformer Thermal Impact Assessment. It is provided with the following disclaimers: Input parameters in this spreadsheet are samples provided for illustration […]

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February 9, 2015

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