杆塔雷电流多通道监测方法及其特性分析  

Multi-channel monitoring method for tower current under lightning strike and its characteristics analysis

作　　者：姜凯华 杜林[1] 陈伟根[1] 王誉博 李军[2] 杨峰 JIANG Kai-hua;DU Lin;CHEN Wei-gen;WANG Yu-bo;LI Jun;YANG Feng(State Key Lab of Power Transmission Equipment,System Security and New Technology,Chongqing University,Chongqing 400044,China;Xichang Satellite Launch Center,Xichang 615000,China;College of Engineering and Technology,Southwest University,Chongqing 400715,China)

机构地区：[1]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400044 [2]西昌卫星发射中心,四川西昌615000 [3]西南大学工程技术学院,重庆400715

出　　处：《电机与控制学报》2021年第3期27-37,共11页Electric Machines and Control

摘　　要：通过采用多个罗氏线圈并联,模拟信号无源叠加的方式,可以对雷击时刻流经杆塔枝干的雷电流分量进行更精准地监测。通过建立多罗氏线圈并联外积分电路模型,根据外积分条件对电路模型进行动态特性(时域和频域)理论分析,可以得出电路模型输入输出关系的理论公式及应用条件。按照雷电流测量要求,对电路模型进行仿真分析;同时依据仿真参数制作传感器,并通过冲击电流实验对传感器进行实验验证。仿真和实验结果表明,所设计的多罗氏线圈并联外积分传感器能够正确还原雷击时刻流经杆塔枝干的雷电流波形,误差小于2%,动态特性符合实际测量要求,验证了理论结果的准确性,且所设计的电流传感器在实际雷电监测系统中得到了应用。A parallel circuit of multiple Rogowski coils is used to monitor the lightning current flowing through the tower.Based on the working principle of a typical Rogowski coil,a model of a multi-Rogowski coil parallel outer integral circuit was established.The theoretical analysis of the dynamic characteristics(time domain and frequency domain)of the circuit model was carried out,and according to the outer integral conditions,the theoretical formula of the circuit model was obtained.According to the lightning current measurement requirements,the circuit model was simulated and analyzed,and the parameters of the sensor have been obtained based on the simulation parameters,which have been verified by the impact current experiment.The simulation and experimental results show that the designed multiple Rogowski coils parallel outer integral sensor can correctly restore the lightning current waveform flowing through the tower,the error is less than 2%,and the dynamic characteristics meet the actual measurement requirements.Accuracy of the theoretical results is verified,which provides a theoretical basis for the parallel application of multiple Rogowski coils.The current sensor has been applied in the actual lightning monitoring system.

关 键 词：罗氏线圈 并联特性 杆塔枝干雷电流测量 暂态分析 

分 类 号：TM315[电气工程—电机]