国内外500kV断路器保护分析和比较

Analysis and Comparison of Domestic and Foreign 500 kV Breaker Protections

结合华东电网500 kV继电保护应用技术原则,从重跳分相出口自保持功能实现、沟通三跳实现和重合闸功能实现这3个方面,对目前国内外500 kV断路器保护进行分析比较,得出各自的优缺点,并对其不足之处提出修改建议。最后对若干概念进行分析说明,以便相关人员深入理解。

This article is based on 500 kV protection application principle of East China Grid.It analyzes and compares 500 kV breaker failure protection by foreign and domestic manufacturers.From the way they achieve lockout single phase re-trip,prepare three phase trip and auto re-closing,it summarizes their merits and defects,gives some suggestion for improvement.Finally,it describes some concepts,which maybe conducive to better understanding.