220kV inner bridge wiring transformer substation circuit breaker failure relay protection method

• Main Authors: JIANG ZHENGCHI, ZHANG DALIN, XIONG WEI, ZHANG MENG, ZHU WENTAO, ZHOU YANG, HENG QU, TANG DAHAI, ZHU XUEYONG, SUN DONGJIE, FEI JI, DA TAO, ZHAO YUAN, XIA CHAO, LIU CHANG, XIE XIAOQING, DAI XINGYU, MA JUNYI, ZHANG YABIN
• Format: Patent
• Language: Chinese; English
• Published: 22.06.2021
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

The invention discloses a 220kV inner bridge wiring transformer substation circuit breaker failure relay protection method. The method is applied to a 220kV inner bridge wiring transformer substation, is simple in action principle and high in reliability aiming at the condition that a 220kV circuit breaker and a 220kV inner bridge circuit breaker fail, and is a relay protection method capable of quickly removing a fault by tripping off a circuit breaker adjacent to the failed circuit breaker. According to the method, circuit breaker protection devices are arranged on three circuit breakers of an inner bridge line respectively, the corresponding circuit breaker failure protection logic function is achieved through the protection devices, and the protection devices are matched with transformer protection and line protection, so that the adjacent circuit breakers of the failure circuit breakers are tripped off to remove faults, the relay protection function for the failure of the circuit breaker of the 220kV inn