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| Analysis and model calculation of the inter-pole short circuit fault in DC system of a 500 kV substation |
| ZHU Shihou, ZHANG Min |
| State Grid Zhejiang Electric Power Co., Ltd Shaoxing Power Supply Company, Shaoxing, Zhejiang 312000 |
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Abstract This paper introduces the analysis process of a 500 kV substation DC system inter-pole short circuit fault. In order to deeply explore this special kind of DC insulation fault, based on the balance bridge principle of the DC insulation monitor, a circuit model of the DC inter-pole short circuit is established, and the process of obtaining the short circuit resistance of mutual short circuit is given. By calculating and analyzing the relationship between the control bus voltage and the short circuit resistance during DC inter-pole short circuit, the characteristics of DC inter-pole short circuit are summarized to provide reference for handling similar DC system faults.
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Received: 14 February 2025
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| Cite this article: |
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ZHU Shihou,ZHANG Min. Analysis and model calculation of the inter-pole short circuit fault in DC system of a 500 kV substation[J]. Electrical Engineering, 2025, 26(7): 76-80.
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| URL: |
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https://dqjs.cesmedia.cn/EN/Y2025/V26/I7/76
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[1] 董楚然, 陈豪, 申杰. 变电站直流系统接地故障的危害及处理[J]. 电力与能源, 2024, 45(3): 335-338.
[2] 张勋, 李刚. 变电站直流系统绝缘检测方法研究[J]. 电气技术, 2016, 17(10): 69-73.
[3] 董升, 陈文通, 郑晓东, 等. 一起直流系统母线绝缘下降故障实例分析[J]. 电气技术, 2015, 16(3): 97-99.
[4] 熊萍, 于雅丽. 变电站直流绝缘监测装置误报漏报接地支路原因分析[J]. 农村电气化, 2021(12): 23-24.
[5] 张珂卫, 屈乾达, 陈小平, 等. 500 kV变电站直流系统接地故障的分析与处理[J]. 电工技术, 2021(8): 99-100, 103.
[6] 李炎, 严太山, 张昭源, 等. 变电站站用直流系统接地现象及辨识[J]. 安徽电气工程职业技术学院学报, 2023, 28(2): 15-21.
[7] 罗六洋. 两套直流系统窜电故障定位分析[J]. 云南电力技术, 2021, 49(5): 58-60.
[8] 李江龙, 王建峰, 郭亮. 综合自动化变电站直流接地常见故障原因分析及处理[J]. 山西电力, 2017(5): 46-50.
[9] 马俊岭, 张习鹏, 樊贤, 等. 一起基于平衡桥原理的直流绝缘监察装置接地报警事故处理与分析[J]. 电气技术, 2018, 19(7): 113-115.
[10] 王彬, 王莉, 李小春, 等. 某500 kV变电站直流接地叠加多点窜电故障分析[J]. 电气技术, 2024, 25(8): 81-84. |
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2025, Vol. 26 
