| 取消750 kV线路断路器合闸电阻的研究 |
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| 作者姓名： | 周沛洪 戴 敏 娄 颖 修木洪 |
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| 作者单位： | 国网武汉高压研究院,国网武汉高压研究院,国网武汉高压研究院,国网武汉高压研究院 |
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| 摘 要： | 取消750 kV线路AIS断路器和GIS断路器合闸电阻可节省费用，并提高断路器运行可靠性。研究了取消750 kV交流输电线路断路器合闸电阻的可行性。提出了以线路的闪络率及避雷器能量作为取消750 kV线路断路器合闸电阻的判据。介绍了线路闪络率的计算条件和方法，给出了取消合闸电阻后的750 kV线路过电压水平和线路的绝缘水平以及几种限制过电压措施。
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| 关 键 词： | 50 kV断路器合闸电阻 过电压 判据 闪络率 |
Studies on Eliminating 750 kV Circuit Breaker
Pre-Inset Resistor |
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| Authors: | ZHOU Pei-hong DAI Min LOU Ying and XIU Mu-hong |
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| Affiliation: | Wuhan HV Research Institute of SGCC,Wuhan HV Research Institute of SGCC,Wuhan HV Research Institute of SGCC,Wuhan HV Research Institute of SGCC |
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| Abstract: | Eliminating pre-inset resistor of 750 kV AIS and GIS circuit breaker can save costs and increase operation stability. This article studied the possibility of eliminating 750 kV circuit breaker pre-inset resistor and presents that the flashover ratio and arrester energy of transmition line can be set as the eliminating 750 kV circuit breaker pre-inset resistor criterion. This article also introduces the calculation condition and methods of the transmition line flashover ratio. The over voltage level and the insulation level of 750 kV transmition line as well as several methods of impress the switching over voltage are given when the pre-inset resistor is eliminated. |
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