Investigation of Ferroresonance Causing Sustained High Voltage at A De-energized 138 kV Bus: A Case Study

Yunfei Wang,Xiaodong Liang,Iraj Rahimi Pordanjani,Ryan Cui,Ali Jafari,Colin Clark

2019 IEEE/IAS 55th Industrial and Commercial Power Systems Technical Conference (I&CPS)（2019）

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摘要

Ferroresonance causes overvoltage and excessive current flow on potential transformers (PT), which can cause substantial damage to PTs and interrupt the power system normal operation. In this article, a sustained overvoltage event on a de-energized 138 kV bus after the circuit breakers were opened to clear a phase A to ground fault at a Canadian transmission utility power grid is investigated. The...

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关键词

Ferroresonance,Damping,Inductors,Circuit breakers,Resistors,Capacitors,RLC circuits

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