Knowledge Base

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) or late-time high-altitude electromagnetic pulse (HEMP E3) modeling. Documentation of the file format is available here. B3D files are loaded in PowerWorld Simulator from the GIC Dialog using the “Time Varying Electric Field Inputs” Calculation Mode.

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January 31, 2022