电容型验电器验电盲区问题的研究

Study on Electrical Inspection's Dead Zone of Capacitive Detector

电业工作中验电盲区的存在,极大程度上影响着人身、设备、电网的安全。针对电气设备验电过程中存在验电盲区这一现象,研究分析了我国验电工作中常用电容型验电器的结构与原理。通过有限元仿真计算与模拟验电试验,探讨了电容型验电器验电盲区的影响因素,并提出了实际工程应用中的防范对策。提出并验证了使用带有接触电极延长段的电容型验电器可有效避免验电盲区。

The dead zone in electrical inspection has significant impacts on people,equipments and the power system. According to the phenomena of the dead zone existing in the inspection of electrical equipments,this paper studied and analyzed the structure and the principle of capacitive detector used in electrical inspection. With the finite element simulations and electrical inspection tests,influence factors of dead zone detection were studied.Meanwhile,several preventive measures for improving the accuracy of dead zone detection in the engineering application were also proposed. The research achievements proposed and verified the idea that capacitive detector with extended contact electrode can effectively avoid the dead zone in electrical inspection.