Analysis of trip causes of interturn protection of HV reactor caused by circuit breaker failure
Liu Huanqing1, Nan Dongliang1, Wang Longlong2, Tang Xiaobing3, Zhang Lu1
1. Electric Power Research Institute State Grid Xinjiang Electric Power Co., Ltd, Urumqi 830011; 2. Xinjiang Power Transmission and Transformation Co., Ltd, Urumqi 830000; 3. Nanjing SP-NICE Technology Development Co., Ltd, Nanjing 211153
Abstract：This paper combines a case of a circuit breaker trip of a high-voltage reactor in a substation and looks for it from three aspects of primary equipment, secondary equipment, and protection principles. Due to the long service life of the equipment and the frequent opening and closing of the high-voltage reactor circuit breaker during maintenance, Causes circuit breaker spring weakness and high-voltage reactor interturn protection trip. By adjusting the spring compression of the circuit breaker to meet the requirements of the circuit breaker's switching characteristics, it provides a reference for the field personnel to operate and maintain the old equipment, analyze and deal with similar failures, avoid such events, and ensure normal power transmission.
2020, Vol. 21 
