Analysis of Converter Stations AC Filter Circuit Breaker Fault

doi:10.3969/j.issn.1000-7229.2015.09.021

Abstract

Abstract:

In EHV/UHVDC transmission systems, several AC filter circuit breakers (CB) were found broken due to internal insulation breakdown fault or external insulation flashover fault in several projects. The CBs supplied by domestic manufacturers were put into operation in China Southern Power Grid for the first time, and a CB fault occurred in a switching process because of porcelain bushing bursting caused by interrupter internal breakdown. This paper introduced the fault process, on-site disintegration inspection and failure analysis of this fault, and proposed the anti-accident measures for this batch of the circuit breakers, as well as the subsequent selection proposals of the filter CB.

Key words: circuit breaker, AC filter, HVDC

CLC Number:

TM 561

YANG Shaojun, SHI Yanhui, XIA Gulin. Analysis of Converter Stations AC Filter Circuit Breaker Fault[J]. ELECTRIC POWER CONSTRUCTION, 2015, 36(9): 129-134.

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