短路电流对二次设备电磁干扰分析及抗干扰措施  

Analysis on Electromagnetic Interference of Short Circuit Current to Secondary Equipment and Research on Anti-interference Measures

作　　者：张赢 袁晓东 曹春诚 程显[2,3] 朱剑鹏 ZHANG Ying;YUAN Xiaodong;CAO Chuncheng;CHENG Xian;ZHU Jianpeng(State Grid Hulunbuir Power Co.,Ltd.,Inner Mongolia Hulunbeier 021100,China;College of Electrical Engineering,Zhengzhou University,Zhengzhou 450000,China;Henan Power Transmission and Electrical Insulation Engineering Research Center,Zhengzhou 45000,China)

机构地区：[1]国网呼伦贝尔供电公司,内蒙古呼伦贝尔021100 [2]郑州大学电气工程学院,郑州450000 [3]河南省输配电装备与电气绝缘工程技术研究中心,郑州450000

出　　处：《高压电器》2024年第1期182-189,共8页High Voltage Apparatus

基　　金：国家自然科学基金项目(51977195,51777025);河南省高校重点科研项目(16A470014,19A470008)。

摘　　要：目前智能配电网的建设不断推进,加快了配电开关一二次设备相关技术的发展,也对长期处于复杂电磁环境下的二次设备提出了更高的要求。文中基于合成试验回路搭建了短路电流对配电开关二次设备电磁干扰试验平台,开展开断故障电流对相关干扰对成套设备的影响研究,分析干扰信号产生原因、频谱特性。针对干扰的特性设计一套抗干扰测量系统,利用ATP-EMTP模拟合成回路进行仿真分析并进行实际测试验证。结果表明:成套设备进行开断试验时,二次设备端口会受到较大的干扰。电流波形也会发生畸变,干扰电流的最高可到26 A,且干扰电流受电流互感器磁饱和和退饱和的影响,通过增加抗干扰措施,二次设备输出准确度与之相比提升约40%。本次的试验结果可为一二次融合成套设备中二次设备电磁兼容研究提供相关依据。At present,the construction of smart distribution network is continuously promoted,which speeds up the development of related technologies of primary and secondary equipment of distribution switch,and,however,high-er requirement of the secondary equipment under the long term and complicated electromagnetic environment is put forward.In this paper,the test platform of the electromagnetic interference of short circuit current to the secondary equipment of distribution switch is set up on the basis of synthetic test circuit.The study on the influence of the relat-ed interference of the breaking fault current on the complete set equipment is developed,the reason of interference signal genration and also the spectrum characteristic are analyzed.As for the interference characteristic,a set of anti-interference measurement system is designed,the ATP-EMTP is used to simulate synthetic circuit for simulation analysis and actual test verification.The results show that in case of breaking test of the complete set equipment the secondary equipment port will be disturbed greatly.The current waveform will also be distorted,the maximum inter-ference current can be up to 26 A and the interference current is affected by the magnetic saturation and desaturation of the current transformer.With addition of the anti-interference measures,the output accuracy of the secondary equipment is increased by about 40%over the previous one.The test resutl this time can provide related evidence for the electromagnetic compability study of the secondary equipment of the primary and secondary fusion complete set complete set equipment.

关 键 词：一二次融合 电磁干扰 合成试验回路 暂态恢复电压 ATP-EMTP 二次设备 

分 类 号：TM643[电气工程—电力系统及自动化]