基于nRF905模块的无线通信直流电场测量系统设计  

Design of DC Electric Field Measurement System with Wireless Communication Based on nRF905 Module

作　　者：张业茂[1,2] 张建功[1,2] 张广洲[3] 李妮[1,2] 师永兴[4] 

机构地区：[1]中国电力科学研究院,武汉430074 [2]湖北省电网环境保护重点实验室,武汉430074 [3]国网电力科学研究院,武汉430074 [4]甘肃省电力公司天水超高压输变电公司,天水741000

出　　处：《高电压技术》2012年第11期2869-2874,共6页High Voltage Engineering

基　　金：国家电网公司科技项目(SG0861)~~

摘　　要：受导线产生的空间离子、风等因素的影响,直流输电线路的合成电场变化较大。为获取线路直流电场的横向分布特性,需要在测量断面上多点同时进行测量并统计分析。有线通信方式的直流电场测量系统在测量布置、调整测点位置等方面非常繁琐,并可能导致不同时段的测量结果难以反映电场的真实分布情况。为解决这一问题,采用MSP430单片机设计了基于nRF905模块的无线通信直流电场测量系统,通过对软件和硬件的优化设计消除了无线通信本身带来的干扰测量信号、通信可靠性降低、测量单元扩展受限等问题,制作样机并进行了现场试验。测试结果表明,该系统与有线通信直流电场测量系统具有相同的测量准确度,测试过程中通信正常,通信距离可达100m,可覆盖直流线路横向测量断面200m区域,完全可以满足直流电场测量的需要,同时可有效提高直流电场测量效率。The total electric field strength of DC transmission line is required to be simultaneously measured in multiple points and statistically analyzed along the measurement route in order to obtain the transverse distribution.It is difficult for traditional DC electric field measurement system with wire communication to arrange measurement locations,causing that the measurement data in different periods hardly reflect the actual electric field distribution.Thus,we designed a DC electric field measurement system with wireless communication based on nRF905module by taking MSP430as a center chip.By optimizing software and hardware design,those problems produced by wireless communication itself were solved,such as the disturbance to measurement signal,the reduction of communication reliability and the limited extensibility of measurement unit.Meanwhile,the prototype was tested in site.The measurement results indicate that the system has the same measurement accuracy as the traditional system,and the communication are normal during the test with the distance up to 100mto cover the transverse measurement route of 200mzone.So the system perfectly satisfies the requirements of DC electric field measurement and greatly promotes the measurement efficiency.

关 键 词：直流(DC) 电场测量 nRF905模块 MSP430单片机 无线通信 相敏整流 

分 类 号：TM721.1[电气工程—电力系统及自动化] TM15