基于无线通讯的直流合成场和离子流密度同步测量系统设计  

Design of Synchronous Measurement System for Total Electric Field and Ion Current Density Based on Wireless Communication

作　　者：张业茂 路遥 王延召 李妮 李斌[2] 李煜磊 ZHANG Yemao;LU Yao;WANG Yanzhao;LI Ni;LI Bin;LI Yulei(State Key Laboratory of Power Grid Environmental Protection,China Electric Power Research Institute,Wuhan 430074,China;State Grid DC Construction Company,Beijing 100052,China;State Grid Hubei Corporation Electric Power Maintenance Company,Wuhan 430050,China)

机构地区：[1]中国电力科学研究院有限公司电网环境保护国家重点实验室,武汉430074 [2]国家电网公司直流建设分公司,北京100052 [3]国网湖北省电力公司检修公司,武汉430050

出　　处：《高电压技术》2019年第1期330-336,共7页High Voltage Engineering

基　　金：国家自然科学基金(51607163;51707076);湖北省自然科学基金(2015CFA155)~~

摘　　要：为了实现合成场和离子流密度的多点同步测量,对各种无线通讯方式进行了比较,针对合成场和离子流测量设备在地面应用的特点,选取绕射性能强、传播距离远的Si4463模块进行无线通讯,采用差分输入的方式减小场磨输入离子信号的干扰,利用T型网络在减小输入阻抗的同时提供足够的放大倍数以进行离子流密度的测量。根据测量电路特点,设计了相应的滤波器和可控放大电路。构建了同步测量的软、硬件系统。并通过标准装置进行了标定,制作了样机,进行了现场实验。研究结果表明,该测量装置线性度好,精度高,通讯距离可达500 m,完全可以满足直流合成场和离子流密度多通道、远距离、同步测量的需要。In order to realize multi-point synchronous measurement for total electric field and ion current density, the various wireless communication modes were compared. In accordance with the characteristics that measurement equipment is used on the ground for total electric field and ion current, we chose the Si4463 as the wireless chip with the advantages of the great diffraction performance and far propagating distance, adopted the differential input mode to decrease the interference by the input of ion signal through field mill, and applied the T-type network to provide sufficient amplification while reducing the input impedance to measure ion current density. According to the characteristics of measurement circuits, an appropriate filter circuit and a controllable amplification circuit were designed. The hardware and software systems for synchronous measurement were constructed and calibrated by the standard calibration device. A prototype was developed and tested in site. The research results indicate that the measurement device has good linearity, high accuracy, and communication distance up to 500 m. It can satisfy the requirements of the multi-channel and remote synchronous measurement of the DC total electric field and ion current density.

关 键 词：直流输电 场磨 合成场强 离子流密度 无线通讯 校准 

分 类 号：TM721.1[电气工程—电力系统及自动化] TM933.313