| 消弧线圈并联中阻选线的单相接地试验及分析 |
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| 引用本文： | 周志成,付慧,凌建,谢楠,李长益.消弧线圈并联中阻选线的单相接地试验及分析[J].高电压技术,2009,35(5):1054-1058. |
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| 作者姓名： | 周志成 付慧 凌建 谢楠 李长益 |
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| 作者单位： | 周志成,付慧,李长益,ZHOU Zhi-cheng,FU Hui,LI Chang-yi(江苏省电力试验研究院有限公司,南京,210036);凌建,LING Jian(江苏省电力公司,南京,210024);谢楠,XIE Nan(常州供电公司,常州,213000)
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| 基金项目： | 国家电网公司重点科技项目 |
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| 摘 要： | 配网单相故障接地工况复杂,导致选线装置准确率低,影响供电可靠性。为提高选线装置的选线准确率分析了消弧线圈并联中电阻接地选线原理,并进行了35kV系统在金属性、砂土、水泥板、碎石堆、柏油板等工况下的单相接地试验。试验分析发现:选线装置能增大阻性电流信号,克服消弧线圈补偿等影响;利用线路零序电流增量可进行故障选线,并能正确区分母线与线路的单相接地故障;常见接地工况过渡接地电阻的大小依次为柏油板、水泥板、碎石堆、砂土;选线装置在接地过渡电阻很高时可能不动作。PSCAD数字仿真试验得出的规律与试验情况基本一致,从而验证了选线原理的正确性。
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| 关 键 词： | 故障选线装置 消弧线圈并联中电阻 35kV系统 单相接地试验 接地过渡电阻 PSCAD |
Single Phase-to-earth Test and Analysis for the Fault Line Selection Under Arc-suppression Coil Parallel Connecting the Mid-resistance |
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| ZHOU Zhi-cheng,FU Hui,LING Jian,XIE Nan,LI Chang-yi.Single Phase-to-earth Test and Analysis for the Fault Line Selection Under Arc-suppression Coil Parallel Connecting the Mid-resistance[J].High Voltage Engineering,2009,35(5):1054-1058. |
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| Authors: | ZHOU Zhi-cheng FU Hui LING Jian XIE Nan LI Chang-yi |
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| Affiliation: | 1. Jiangsu Electric Power Research Institute Co.;Ltd.;Nanjing 210036;China;2. Jiangsu Electric Power Company;Nanjing 210024;3. Changzhou Power Supply Company;Changzhou 213000;China |
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| Abstract: | The correctness of fault line selection device is very low because of the complex single-phase-to-earth fault in distribution network,which affects the reliability of power supply. Consequently,the principle of fault line selection under the arc-suppression coil parallel connecting the mid-resistance grounding was analyzed,and lots of single-phase-to-earth tests are carried out respectively on the metal slab,sand soil,floor slab,gravel pile,asphalt slab in 35 kV system. Conclusions are drawn by analyzing th... |
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| Keywords: | PSCAD |
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