| 考虑接地导体时500kV开关场内的工频电场 |
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| 引用本文： | 罗鹏,杨峰,蔡明月.考虑接地导体时500kV开关场内的工频电场[J].电测与仪表,2017,54(3). |
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| 作者姓名： | 罗鹏 杨峰 蔡明月 |
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| 作者单位： | 1. 国网重庆璧山供电公司,重庆,402760;2. 重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆,400044 |
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| 摘 要： | 为了深入研究变电站内工频电场在有无考虑站内电气设备接地体影响时的分布情况,推导了计算开关场内工频电场的三维模拟电荷法,以500 k V变电站为例,对变电站500 k V开关场及各类电气设备的接地体进行模型建立与工频电场分布的计算分析。首先,通过仿真结果与实测结果的对比,验证所建模型的正确性;然后分析了变电站站内有无电气设备接地体影响时的工频电场分布情况。文章方法为考虑接地体影响时站内工频电场的计算与分析提供了一种有效、快捷的途径。
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| 关 键 词： | 变电站 开关场 模拟电荷法 工频电场 接地体 安全防护等级 |
| 收稿时间： | 2015/10/12 0:00:00 |
| 修稿时间： | 2016/1/4 0:00:00 |
The power frequency electric field in 500kV switching yard involving the earth electrode |
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| luopeng,YangFeng and Cai Mingyue.The power frequency electric field in 500kV switching yard involving the earth electrode[J].Electrical Measurement & Instrumentation,2017,54(3). |
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| Authors: | luopeng YangFeng and Cai Mingyue |
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| Affiliation: | Chongqing University,State Key Laboratory of Power Transmission Equipment & System Security and New Technology ,Chongqing University,Bishan State Grid Power Company |
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| Abstract: | In order to study the distribution conditions of power frequency electric field in the substation whether the earth electrode of electrical equipment exists or not, the 3D charge simulation method for the calculation of power fre-quency electric field in switching yard is derived in this paper.500 kV substation is taken for example, the switching yard and all kinds of the earth electrode of electrical equipment are modeled, and the power frequency electric field is calculated.Firstly, numerical results are compared to measured, which verifies the correctness of the model.Then, the power frequency electric field distribution in switching yard is analyzed whether the earth electrode of electrical e-quipment exists or not.The proposed method provides an effective, efficient way for the calculation and analysis of the power frequency electric field with the existence of earth electrode. |
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| Keywords: | substation switching yard charge simulation method electric field earth electrode the level of security |
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