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What is HVDC Overvoltage Protection Method about?

This patent describes a method for overvoltage protection of HVDC transmission lines. It involves installing a surge arrester with a nonlinear resistor in series. When the surge arrester is actuated by an overvoltage, a current detector responds and triggers a pulse generator. This causes a shaping circuit to block the control pulses to the rectifier valves for one switching period. This results in a single misfire of the valves, interrupting the follow current through the surge arrester. The voltage across

Author

Vishal Dibya

Language

EN