基于氧化锌阀片的过电压测量装置研究  

Study on Overvoltage Measurer Based on Zinc Oxide Valve Plate

作　　者：王刚峰 权蒙 肖昕岩 杨兰均[2] WANG Gangfeng;QUAN Meng;XIAO Xinyan;YANG Lanjun(State Grid Shaanxi Electric Power Company,Xianyang Power Supply Company,Xianyang 712000,China;Xi′an Jiaotong University,Xi′an 710049,China)

机构地区：[1]国网陕西省电力公司咸阳供电公司,陕西咸阳712000 [2]西安交通大学,陕西西安710049

出　　处：《电工技术》2024年第14期145-148,共4页Electric Engineering

基　　金：国网陕西省电力有限公司科技项目“避雷器的TOV在线监测与状态评估研究”资助(编号5226XY230003)。

摘　　要：研究了一种基于氧化锌阀片的过电压测量装置。首先介绍了该测量法的基本原理,即选用与氧化锌避雷器非线性特性相同的氧化锌阀片串接在避雷器下方,以串联分压的方式将过电压信号从分压阀片上采出,然后通过MATLAB软件对氧化锌阀片的伏安特性方程进行多项式拟合并搭建分压器仿真电路,探究出分压比的变化规律与影响因素,最后开展雷电过电压与操作过电压下的氧化锌阀片分压实验,实验结果证明了仿真的有效性与技术路线的可行性。This paper studies an overvoltage measurer based on zinc oxide valve plates.It first outlines the basic principle of this measuring method,which is to select zinc oxide valve plates with the same nonlinear characteristics as zinc oxide lightning arresters and connect them in series below the lightning arrester.The overvoltage signal is collected from the pressure divider plate in a series voltage sharing manner.Second the voltammetric characteristic equation of the zinc oxide valve plate is polynomially fitted using MATLAB software,and a voltage divider simulation circuit is built to explore the variation law and influencing factors of the voltage divider ratio.Finally a zinc oxide valve plate voltage divider experiment is conducted under lightning overvoltage and switching overvoltage.The experimental results prove the effectiveness of the simulation and the feasibility of the technical route.

关 键 词：过电压测量 氧化锌阀片 非线性 分压比 

分 类 号：TM835[电气工程—高电压与绝缘技术]