中性点非有效接地配电网弧光接地的物理模拟研究  

Physical Simulation of Arc Grounding in Distribution Network with Non Effectively Grounded Neutral

作　　者：韩士杰 张凤鸽 黎涛 袁莉 杨德先 HAN Shi-jie;ZHANG Feng-ge;LI Tao;YUAN Li;YANG De-xian(State Grid Electric Power Research Institute,Nanjing 211102 China;State Key Laboratory of Advanced Electromagnetic Engineering and Technology,School of Electrical and Electronic Engineering,Huazhong University of Science and Technology,Wuhan 430074 China;State Grid Pingxiang Power Supply Company,Pingxiang 337000 China)

机构地区：[1]国网电力科学研究院有限公司,江苏南京211102 [2]华中科技大学电气与电子工程学院,强电磁工程与新技术国家重点实验室,湖北武汉430074 [3]国网萍乡供电公司,江西萍乡337000

出　　处：《自动化技术与应用》2023年第10期137-140,共4页Techniques of Automation and Applications

基　　金：国家重点实验室基金资助项目(SKLHVDC-2020-KF-15)。

摘　　要：弧光接地是中性点不接地配电网中最常见的故障,对电网设备的绝缘性能有严重威胁,从而影响电网运行的稳定性,亟需进行弧光接地故障研究。研究提出弧光接地的物理模拟方法,设计实现弧光模拟装置,通过精确控制放电间隙及放电极移动速度,实现稳定模拟的电弧接地、间歇性电弧接地、弧光渐变等各种弧光接地现象。记录试验波形,并进行分析波形,发现弧光放电的规律。结果表明,物理模拟方法能够可控模拟弧光现象,记录下的波形数据可为处理弧光接地故障提供参考。Arc grounding is the most common fault in distribution network,which seriously threatens the insulation performance of power grid equipment and affects the stability of power grid operation.The research on arc grounding fault is the basis of reducing arc harm.The physical simulation method of arc grounding is proposed,and the arc simulation device is designed and realized.By accurately controlling the discharge gap and the moving speed of discharge electrode,various arc grounding phenomena such as arc grounding,intermittent arc grounding and arc gradual change are realized.The test waveform was recorded and analyzed,and the law of arc discharge was found.The results show that the physical simulation method can controllably simulate the arc phenomenon,and the recorded waveform data can provide a reference for dealing with arc grounding fault.

关 键 词：中性点不接地 弧光接地 物理模拟 波形分析 燃弧电压 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]