Professor of Electrical Power Engineering at @Imperialeee, @ImperialCollege. Co-Director of @EnergyFuturesIC. My views. He/Him.
Aug 20, 2019 • 33 tweets • 6 min read
This report will gives very interesting account for engineers looking to understand what happened. I'll try to summarise. The sequence is more complex and subtle than was evident from public-domain information on the day itself, 9th Aug. Initial cause was a lightening strike ...
Lightning affects power lines many times a year. Large currents are seen, circuit breakers open to disconnect the line, in 70 ms in this case. Those circuit breakers re-close automatically, in this case after 20 s and stay closed if the "fault" has gone & lighting will have gone
