CAJ | 학술논문

直流电场的监测已成为直流输电工程环境影响评价监测的重要部分,由于直流电场是由标称场和空间电荷共同作用产生,易受外界环境变化的影响,难以准确地测量.针对此一问题,介绍了一种带统计功能的直流电场测量装置并给出直流电场产生机理、测量原理、硬件模块及其功能和软件设计,装置通过场磨的导电金属片获取直流电场信号后转化为交流信号进行处理,再送给手持机现场显示,利用PC机可得到测量的原始值和统计值,并生成报表和绘制特性图形.装置既可以单台使用,又可以多台同时使用,全数字化显示,现场测量实践证明该装置能便捷、有效、准确地测量直流输电工程的直流电场,可应用于直流输电工程电场的现场监测.
직류전장적감측이성위직류수전공정배경영향평개감측적중요부분,유우직류전장시유표칭장화공간전하공동작용산생,역수외계배경변화적영향,난이준학지측량.침대차일문제,개소료일충대통계공능적직류전장측량장치병급출직류전장산생궤리、측량원리、경건모괴급기공능화연건설계,장치통과장마적도전금속편획취직류전장신호후전화위교류신호진행처리,재송급수지궤현장현시,이용PC궤가득도측량적원시치화통계치,병생성보표화회제특성도형.장치기가이단태사용,우가이다태동시사용,전수자화현시,현장측량실천증명해장치능편첩、유효、준학지측량직류수전공정적직류전장,가응용우직류수전공정전장적현장감측.
DC electric field strength is one of the most important electric-magnet environment parameters. DC electric field strength is produced by dc power systems and space charge, it is difficult to be measured accurately because it is susceptible to environment change in its vicinity. The implementation of a measurement device for DC electric field strength is introduced, its generation mechanism and measuring principle are described, and its design of hardware and software is offered. The device is composed of three parts,such as lower machine unit,upper machine unit and PC unit. The field chill in lower machine uint can convert the DC signal into AC signal through a sensing electrode that is periodically exposed and shielded from the electric field by a grounded rotating shutter, the upper machine unit real-time display the DC electric field strength sended from the field chill, and the PC unit is used to statistically treat the original data and to generate journal sheet and draw the characteristic curve. This device can be used not only alone to measure one point's DC electric field strength, but also in multiple to measure DC electric field strength' s fading characteristic. It has many functions, such as giving DC electric field's statistic, full digital display, and friendly man-machine interface. Field tests verify that this measurement device can accurately measure DC electric field strength, and it can be applied to measure DC electric field strength in DC power transmission engineering.