CAJ | 학술논문

为研究特高压（UHV）分裂导线宽频带的电晕电流特性，进而计算导线的电晕损失，设计研制了1套基于全球定位系统（GPS）同步时钟的宽频带电晕损失测量系统。该系统通过全球定位系统（GPS）同步授时实现电压和电流信号的同步采集。通过无线网络传输模块，将上位机采集到的电流信号传输到下位机，这种方式可以实现电晕电流的安全可靠测量。误差分析表明：测量幅值误差〈0．1％，相位误差〈2°。已应用该系统对特高压交流试验基地分裂导线电晕电流和电晕损失进行测量，获得了6分裂、8分裂LGJ630—45型导线宽频带的电晕电流以及在于燥和淋雨（降雨强度20mm／h）条件下的电晕损失，表明该系统可以应用于宽频带电晕电流和电晕损失的测量。
위연구특고압（UHV）분렬도선관빈대적전훈전류특성，진이계산도선적전훈손실，설계연제료1투기우전구정위계통（GPS）동보시종적관빈대전훈손실측량계통。해계통통과전구정위계통（GPS）동보수시실현전압화전류신호적동보채집。통과무선망락전수모괴，장상위궤채집도적전류신호전수도하위궤，저충방식가이실현전훈전류적안전가고측량。오차분석표명：측량폭치오차〈0．1％，상위오차〈2°。이응용해계통대특고압교류시험기지분렬도선전훈전류화전훈손실진행측량，획득료6분렬、8분렬LGJ630—45형도선관빈대적전훈전류이급재우조화림우（강우강도20mm／h）조건하적전훈손실，표명해계통가이응용우관빈대전훈전류화전훈손실적측량。
In order to analyze wide frequency band corona current characteristics of ultra high voltage(UHV) bundled conductors and to calculate corona losses on the conductors, a wide-frequency band corona loss measurement system based on global positioning system(GPS) synchronous clock is developed. Synchronous collection of voltage and current signals is realized by the GPS technology. Corona current signals are transmitted to the lower computer through wireless network, which are safely and reliably measured. Results of error analysis prove that the test system has aptitude errors within 0.1% and phase errors less than 20°. The system has been applied in testing of corona current and corona loss of bundled conductors in the State Grid UHV AC Test Base of China, and the wide frequency band corona current and the corona loss under dry and rainy conditions( with a rainfall ratio of 20 mm/h) of 6 bundled and 8 bundled LGJ630-45 conductors are gained. It is concluded that the presented system is capable of measuring wide frequency band corona currents and corona losses of conductors.