| 引用本文: | 姜 博,董新洲,施慎行.配电网单相接地故障选线典型方法实验研究[J].电力自动化设备,2015,35(11): |
| JIANG Bo,DONG Xinzhou,SHI Shenxing.Experimental research on typical single-phase grounding line selection methods of distribution network[J].Electric Power Automation Equipment,2015,35(11): |
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| 摘要: |
| 为验证小电流接地配电系统中各种单相接地故障选线方法的性能，利用暂态行波保护测试仪、宽频功率放大器和自行开发的小电流接地选线装置搭建了测试平台，模拟了不同故障条件和线路结构下的故障，对几种典型的选线方法进行了测试实验，并给出了不同选线方法的有效域。结果表明，所搭建的测试平台能够有效进行选线方法实验；行波选线法优势明显，但在分支线路故障或较小故障初相角条件下可靠性降低；暂态信号选线法在较大过渡电阻或较小故障初相角条件下可靠性降低。行波选线法和暂态信号选线法结合可提高选线可靠性。 |
| 关键词: 故障选线 配电 中性点非有效接地 单相接地故障 行波 暂态 实验 |
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| 基金项目:国家自然科学基金重大国际合作项目（51120175001） |
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| Experimental research on typical single-phase grounding line selection methods of distribution network |
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JIANG Bo, DONG Xinzhou, SHI Shenxing
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State Key Lab of Control and Simulation of Power Systems and Generation Equipments，Department of Electrical Engineering，Tsinghua University，Beijing 100084，China
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| Abstract: |
| A test platform consisting of the transient travelling wave protection tester，broudband power amplifiers and self-developed faulty line selection device is established to verify the performance of different faulty line selection methods for the single-phase grounding fault in distribution network. The different fault conditions and line structures are simulated and several typical faulty line selection methods tested. The validity domain is given for different methods. Results show：the established test platform can effectively test different faulty line selection methods；the method based on the travelling wave has obvious advantages，but its reliability reduces when the fault occurs in the branch line or the initial fault phase is small；the method based on the transient signal reduces its reliability when the transition resistance is large or the initial fault phase is small. The combination of the travelling-wave based method and the transient-signal based method can effectively improve the reliability of faulty line selection. |
| Key words: faulty line selection electric power distribution non-effectively grounded neutral single-phase grounding fault travelling wave transients experiment |
