220kV电缆线路过电压计算与分析 |
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引用本文: | 牛涛,许文超,钱康,施超,车尉尉.220kV电缆线路过电压计算与分析[J].江苏电器,2016(9):33-37. |
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作者姓名: | 牛涛 许文超 钱康 施超 车尉尉 |
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作者单位: | 1. 中国能源建设集团江苏省电力设计院有限公司,江苏 南京,211102;2. 江苏省电力公司电力科学研究院,江苏 南京,211103 |
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摘 要: | 介绍了220kV电缆线路的结构参数和排列方式,分析了电缆电气参数的影响因素。通过电磁暂态仿真程序计算,得知架空线和长距离电缆混合线路的工频过电压以及长距离电缆线路的分闸空载线路重燃过电压均较高,可能超过限值,通常采用加装220kV并联电抗器的方法予以限制。
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关 键 词: | 电缆线路 工频过电压 操作过电压 重燃 |
Calculation and Analysis of 220kV Cable Line Overvoltage |
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Abstract: | Introduction was made to the structure parameter and arrangement mode of 220kV cable line. Analysis was made to the inlfuence factors of electric parameters of cable. The electromagnetic transient simulation program calculation shows that the power-frequency overvolt-age of the overhead line and long cable hybrid line, and the restriking overvoltage in switching-off action of the long cable line are higher, may exceed the limit value. The method of installing 220kV shunt reactor is usually adopted to restrict the overvoltage. |
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Keywords: | cable line power-frequency overvoltage switching overvoltage restriking |
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