高压三相组合互感器三相检定方法及其实现研究

Research on Three-phase Calibration Method of HV Three-phase Combined Transformer and its Implementation

提出了高压三相组合互感器在模拟实际工作状态下实施三相同时检定方法即三相法,并研制出一套实现该检定方法的检定装置。阐述了三相法的原理,介绍了所构建检定系统、检定装置的组成及其各功能单元的技术性能,提供了检定试验线路和试验结果。大量试验测试结果表明,本文提出的检测方法和检定装置,可准确检定10～35kV高压三相组合互感器实际工作状态下的误差特性,并能检测出该组合互感器中的电压互感器与电流互感器相互间影响所引起的误差。

In this paper,a three-phase calibration method which is that the three-phase voltage transformer or current transformer of HV three-phase combined transformer is calibrated in the same time with simulating real running state is proposed.And a standard calibrating apparatus which is used to implementation three-phase calibration method is designed.The structure,working principle,technical characteristics,test circuit and test results of standard calibrating apparatus are given out.The large test results show that the error performance in real running state of 10～35kV HV three-phase combined transformer can be calibrated accurately and the error caused by the mutual influence between the voltage transformer or current transformer can be detected out with the proposed three-phase calibration method and apparatus.