【作者】 高峰；

【导师】 徐玉琴；

【作者基本信息】 华北电力大学（河北） ， 电力系统及其自动化， 2006， 硕士

【摘要】 本文对传统的电网对地电容电流测量方法进行了分析,指出了各种测量方法存在的局限性。深入研究了基于信号注入法的电网对地电容电流测量方法,并在已有的理论基础上,对基于定频注入方式的电网对地电容电流测量方法进行了合理的改进。本文完成了以ADuC831BS芯片为核心的对地电容电流测量装置,在实验室中进行了装置的硬件和软件调试,完成了模拟测试、得到了正确的测量结果。测量结果表明基于定频注入方式的电网对地电容电流测量装置的可靠性和优越性。论文最后从电容电流测量装置的测量原理出发,分析了在现场测量中可能出现的问题,并针对这些问题提出了相应的解决措施。更多还原

【Abstract】 Traditional methods for measuring capacitive phase-to-earth current in distributionnetwork which has been analyzed in this paper, their drawbacks are presented also. Analyzingthoroughly the methods for measuring capacitive phase-to-earth current by injecting signals, itis laid a strong emphases on the reasonable improvement of measure methods for capacitivephase-to-earth current by injecting fixed frequency signals, on the foundation of traditionalmethods existing. The design of hardware and software of single chip system has beencompleted, taking ADuC831BS chip as its core, which has been debugged in the lab. Then thedevice for measuring capacitive phase-to-earth current accomplished the imitate experimentto obtain its results in this paper. According to the analysis of experimental results, itmanifests the credibility and superiority of measure device for capacitive phase-to-earthcurrent by injecting frequency fixed signals. Finally, setting out from the measure theory ofmeasure device for capacitive phase-to-earth current, this paper analyzed the existing problemprobably while measuring actually and put forward the solution to the corresponding problem.更多还原