基于负荷误差外推法便携三相电压互感器现场检定装置的研究

摘要

规程要求检定三相电压互感器(以下简称三相TV)应施加三相高压电源.传统方法需用的设备多,劳动强度大;需要三相电源,需要调整三相电压达到平衡对称,需要三相电源的相序与被校互感器标明的相序一致,由于这些条件的限制,使得三相TV现场校验很难开展.本文提出了一种问题的解决方案--基于负荷误差外推法便携式三相TV现场检定装置,从实践和理论上进行了研究和论证.%Triphase high -voltage power is required in calibrating triphase voltage (triphase TV for short) transformer.Traditional method with more equipments and great labor intensity has requirements to test triphase TV as follows: triphase power, balance of triphase voltage, accordance between triphase power phase sequence and that of tested transformer. Because of these restrictions, it is difficult to conduct field calibration of triphase TV. Therefore, the portable field calibration device for triphase voltage transformer based on load error extrapolation is proposed and tested theoretically.