典型变电站沟内线缆HEMP耦合仿真研究  

Simulation Study on HEMP Coupling of Cables in the Trench of Typical Substation

作　　者：龚渝涵 李俊娜[1] 田君杨 黄齐翔 巫方正 李世纪 王皓琰 GONG Yuhan;LI Junna;TIAN Junyang;HUANG Qixiang;WU Fangzheng;LI Shiji;WANG Haoyan(School of Electrical Engineering,Xi’an Jiaotong University,Xi’an 710049,China;Power Dispatching Center,Guangxi Power Grid Co.,Ltd.,Nanning 530021,China)

机构地区：[1]西安交通大学电气工程学院,陕西西安710049 [2]广西电网有限责任公司电力调度中心,广西南宁530021

出　　处：《智慧电力》2024年第4期47-53,99,共8页Smart Power

基　　金：国家自然科学基金资助项目(52177157);广西电网公司科技项目(046000KK52210030)。

摘　　要：当高空电磁脉冲耦合到变电站内部时,线缆会成为耦合主要的效应物。基于典型变电站布局,选取了3种典型的连接二次设备的控制线缆,对比分析选取了三维传输线矩阵TLM算法对典型线缆进行高空电磁脉冲HEMP耦合仿真分析。结果表明,两端均不接地的线缆末端能产生高达49 kV的电压信号;模拟量传输线缆则能在接地芯线和屏蔽层上感应到百安培量级的电流信号;传输开关量的线缆在屏蔽层感应到百安培量级的电流信号,芯线上的信号不超过0.23 mA。最后利用水平极化辐射波模拟器进行现场试验,与仿真结果对比验证了算法的等效性和耦合计算结果的有效性。Cables will become the main effector of coupling when high altitude electromagnetic pulse(HEMP)is coupled to the interior of substation.Based on the typical substation layout,three typical control cables connected with the secondary equipment are selected,and the three-dimensional TLM algorithm is selected to simulate and analyze the typical cables for HEMP coupling.The results show that cable ends that are not grounded at both ends can generate voltage signals up to 49 kV.Analog transmission cables can sense current signals of the order of hundreds of amperes on the ground core wire and shielding layer.The cables transmitting the switching quantity senses current signals of the order of hundreds of amperes in the shielding layer.The signal on the core does not exceed 0.23mA.Finally,a horizontally polarized radiated wave simulator is used to conduct field tests,compared with the comparison with the simulation results,the equivalence of the algorithm and the validity of the coupling calculation results are verified.

关 键 词：HEMP 典型变电站 电缆沟 线缆耦合 控制线缆 

分 类 号：TM064[电气工程—电工理论与新技术]