机构地区: 国电南瑞科技股份有限公司
出 处: 《江苏电机工程》 2010年第6期35-38,共4页
摘 要: 针对荔城站220 kV失灵保护的一次不正确动作,深入分析了其原因;针对新建、改建和扩建变电站,立足于提升失灵保护的可靠性和规范性,提出了配置、组屏及回路等多方面措施;针对在役形式各样的失灵回路,提出了采用"逐点测量电压"的检验方法,确保了检验结果的可信性。实践证明了各项对策的正确性和有效性。 Focusing on an incorrect operation of 220kV circuit-breaker failure protection in Licheng substation,this paper analyzes its causes in-depth.Based on upgrading the reliability and normalization of circuit-breaker failure protection,some measures of configuration,grouped screens,circuits are given for new construction,reconstruction and expansion of substations.For the circuits in-service of circuit-breaker failure protection,this paper puts forward a "point by point measurement of voltage" test method which can ensure the credibility of test results.Practical operation and fault analysis verify the correctness and effectiveness of the measures.
领 域: [电气工程]