CAJ | 학술논문

长空气间隙放电特性是特高压输电技术的重要研究内容,电场测量作为其重要研究手段,是近年来的研究热点之一。为此,建立了以高场强光电集成电场传感器为核心的空间电场测量系统。利用平板电极对电场测量系统进行校准,获得系统的输入输出特性;通过时域波形对比,证明测量系统具有良好的动态响应特性。利用该系统对1m棒-板间隙在正极性雷电冲击电压作用下的空间电场进行定量测量,得到了空间电场的时域波形。采用模拟电荷法,对试验条件下的电场幅值进行计算,实测值与理论计算结果比较相符,其最大误差〈5%,证明该空间电场测量系统完全可以用于空气间隙放电电场的定量测量,为长空气间隙放电提供了重要的研究手段。
장공기간극방전특성시특고압수전기술적중요연구내용,전장측량작위기중요연구수단,시근년래적연구열점지일。위차,건립료이고장강광전집성전장전감기위핵심적공간전장측량계통。이용평판전겁대전장측량계통진행교준,획득계통적수입수출특성;통과시역파형대비,증명측량계통구유량호적동태향응특성。이용해계통대1m봉-판간극재정겁성뇌전충격전압작용하적공간전장진행정량측량,득도료공간전장적시역파형。채용모의전하법,대시험조건하적전장폭치진행계산,실측치여이론계산결과비교상부,기최대오차〈5%,증명해공간전장측량계통완전가이용우공기간극방전전장적정량측량,위장공기간극방전제공료중요적연구수단。
The research on the characteristic of long air gap discharge is of great importance to the development of ultra high voltage（UHV） power transmission technology.Consequently,we proposed an electric field measurement system based on the integrated electro-optical technology to measure the electric field in long air gap discharge under positive lightning impulse voltage.By calibrating the system in the parallel plane electrodes,we obtained the input and output performances and measurement range of the system.Moreover,on the basis of the 1 m air gap test platform,we obtained the typical electric field waveform.It was proved that the system had small errors and good time domain characteristics under lightning impulse voltage.Thereby,we measured the axis electric field in a 1 m rod-plane gap energized by positive lightning impulse voltage,and adopted the charge simulation method（CSM） to calculate the Laplace fields on the sensor points.Comparison of the measurement and calculation results revealed that they agreed very well and the max error was less than 5%.Furthermore,the electric field measurement system will be well used in analyzing the space charge electric field and provide the important research method of long air gap discharge.