基于MEMS传感器的线路电压测量方法研究  

Research on line voltage measurement method based on MEMS sensor

作　　者：栗晓政 崔凤庆 宋晓燕 梁纲 樊彦国 邱震辉 杨庆[3] LI Xiaozheng;CUI Fengqing;SONG Xiaoyan;LIANG Gang;FAN Yanguo;QIU Zhenhui;YANG Qing(State Grid Henan Electric Power Research Institute,Henan Zhengzhou 450018,China;State Grid Henan Electric Power Company,Henan Zhengzhou 450018,China;State Key Laboratory of Power Transmission Equipment Technology,School of Electrical Engineering,Chongqing University,Chongqing 400044,China)

机构地区：[1]国网河南省电力公司电力科学研究院,河南郑州450018 [2]国网河南省电力公司,河南郑州450018 [3]重庆大学电气工程学院输变电装备技术全国重点实验室,重庆400044

出　　处：《工业仪表与自动化装置》2024年第3期123-127,共5页Industrial Instrumentation & Automation

摘　　要：MEMS电场传感器体积小、功耗低,应用于非侵入式电压测量技术中可以有效减小装置测量体积、成本,契合当前分布式测量需求。因此该文设计了一种基于MEMS电场传感器的电压测量方案,首先介绍了MEMS电场传感器的工作原理,其次针对传感器结构特点基于电容分压原理设计了电压测量方案,并进一步分析其等效电路模型,最后对该测量方案进行了可行性和准确性测试。结果表明设计的测量方案能在1~10 kV内准确地反演工频电压,测量的最大幅值偏差为2.21%。该文提出的非侵入式电压测量方案搭载简便,能够稳定的对线路电压进行测量,为架空线路电压的实时监测提供可靠的技术手段。可以为线路电气量参数实时测量提供可靠的数据支撑。MEMS electric field sensor has small size and low power consumption,which can effectively reduce the measurement volume and cost of the device in non-invasive voltage measurement technology,and meet the current distributed measurement needs.Therefore,a voltage measurement scheme based on MEMS electric field sensor is designed in this paper.Firstly,the working principle and capacitance voltage division principle are introduced.Secondly,the voltage measurement scheme is designed based on the structure characteristics of the sensor,and its equivalent circuit model is further analyzed.The results show that the designed measurement scheme can accurately invert the power frequency voltage within 1~10 kV,and the maximum deviation of the measured value is 2.21%.The non-intrusive voltage measurement scheme proposed in this paper is easy to carry and can measure the line voltage stably,providing a reliable technical means for the real-time monitoring of overhead line voltage.It can provide reliable data support for the real-time measurement of line electrical parameters.

关 键 词：MEMS传感器 耦合电容 电压测量 输电线路 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]