Simulation and Investigation on Capacitive Recovery Voltage of 800 kV AC Filter Sub-Bank Circuit Breaker in UHVDC Converter Station

doi:10.3969/j.issn.1000-7229.2015.09.012

Abstract

Abstract:

The circuit breaker for switching AC filter is required the capacity of withstanding high voltage while the UHVDC direct accesses to 750 kV AC grid, So it is necessary to research the capacitive recovery voltage (CRV) of circuit breaker. This paper analyzed various AC fault scenarios of AC filter sub-bank circuit breaker, constructed the simulation calculation model of CRV by PSCAD software, and calculated the maximum value of CRV of 800 kV AC filter sub-bank breaker in the Lingshao UHVDC project. The simulation results show that the CRV of AC filter sub-bank breaker is determined by the short-circuit level of AC system and the AC-side insulator level, and the CRV exceeds the requirement of existing standards, so it is needed to develop new type of circuit breaker to meet the needs of engineering.

Key words: capacitive recovery voltage, AC filter, circuit breaker, UHVDC

CLC Number:

TM 721

SHEN Xiaolin, MA Weimin, BAI Guangya, NIE Dingzhen. Simulation and Investigation on Capacitive Recovery Voltage of 800 kV AC Filter Sub-Bank Circuit Breaker in UHVDC Converter Station[J]. ELECTRIC POWER CONSTRUCTION, 2015, 36(9): 73-77.

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