摘要
对220kV3AQ1-EE型断路器灭弧室瓷套管在淋雨条件下发生外绝缘闪络问题开展研究。通过实验室模拟试验,得出该型断路器套管在不同雨量下的雷电和操作冲击的50%放电概率的放电电压值(U50),分析了不同雨量和电压波形下U50存在差异的原因,并提出了改进建议。
When 220 kV 3AQ1-EE-Type circuit breaker is caught in rain, the porcelain bushing of interrupter maybe cause external insulation flashover. This paper studies on this phenomenon and carries out simulation test. The 50% probability discharge voltage （U50） of lightning and operation impulse of the bushing is got under different rainfall and voltage waveforms. The reason of the difference in these voltages is analyzed, and improvement suggestion is proposed too.
出处
《浙江电力》
2010年第1期8-12,共5页
Zhejiang Electric Power
关键词
断路器
套管
淋雨
雷电冲击
操作冲击
闪络特性
circuit breaker
bushing
rain
lightning impulse
operation impulse
flashover characteristic
