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Home » PJM Operating Committee Briefs
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PJM Operating Committee Briefs

Geomagnetic Disturbance Causes Spikes, No Operational Problems

Apr 14, 2015
Rich Heidorn Jr.
PJM Operating Committee (OC) / Reliability / Generation / Transmission Operations
An unexpected geomagnetic disturbance (GMD) March 17 caused brief spikes on PJM’s grid but no operational problems, RTO officials told the Operating Committee last week. Some of PJM’s approximately 50 geomagnetically induced current (GIC) meters recorded spikes of more than 20 amps, but the jumps were short-lived and did not...

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