High-Altitude Electromagnetic Pulse (HEMP) Analysis

PowerWorld is developing tools for incorporating HEMP into power flow and transient stability analysis. Professor Tom Overbye of the University of Illinois and PowerWorld co-founder, recently delivered this presentation to the PSERC Industry Advisory Board. Interested customers are encouraged to contact us about beta-testing these tools. (Contact information is listed below.)


The following contour graphics depict the EMP E3 effects of a simulated detonation over a synthetically-constructed model of a Texas power grid. This analysis can be replicated with the files and procedure described here.

Deviation in AC bus voltages on the 115-kV grid due to transformer reactive power losses:

Substation neutral current:

Surface electric field magnitude 60 seconds after detonation (E3B “heave”):


Transient stability plot of transformer effective GIC currents: