| 750kV宝鸡至乾县送变电工程内过电压研究 |
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| 引用本文： | 周沛洪,娄颖,戴敏,修木洪.750kV宝鸡至乾县送变电工程内过电压研究[J].电网与水力发电进展,2008,24(1):19-23. |
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| 作者姓名： | 周沛洪 娄颖 戴敏 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： | 介绍了宝鸡-乾县750kV同杆双回交流输电线路、同塔双回线路内过电压的计算结果。选择了高抗中性点小电抗和线路接地刀闸的参数。提出了线路侧避雷器的额定电压选为600kV，以降低线路侧操作和雷电过电压的保护水平，减少避雷器备品和备件的建议。探讨了取消750kV同杆双回交流输电线路断路器合闸电阻的可行性。
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| 关 键 词： | 同塔双回线路 内过电压 中性点小电抗 避雷器 合闸电阻 |
| 文章编号： | 1674-0009(2008)01-0019-05 |
| 修稿时间： | 2007年9月13日 |
Study on Internal Overvoltage of 750kV Baoji-Qianxian Transmission Line |
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| Authors: | ZHOU Pei-hong LOU Ying DAI Min and XIU Mu-hong |
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| Affiliation: | Wuhan High Voltage Research Institute of SGCC;Wuhan High Voltage Research Institute of SGCC;Wuhan High Voltage Research Institute of SGCC;Wuhan High Voltage Research Institute of SGCC |
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| Abstract: | This paper presents the calculation result of the switching overvoltage of the 750kV double circuit transmission line from Baoji to Qianxian. The parameters of neutral reactor for HV shunt reactors and the line ground switch are selected. To reduce the arrester switching and lightning protection level as well as spare parts for the arrester, this paper suggests the 600kV rated voltage of the line side arrester be selected. The possibility of eliminating the pre-insert resistor of the circuit breaker for the 750kV double circuit transmission line is also studied. |
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| Keywords: | 750kV one tower double circuit transmission line switching overvoltage neutral reactor arrester pre-insert resistor of circuit breaker |
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