多只电压互感器同步校验误差分析

针对目前省市级计量检定部门电压互感器校验量大幅增加,而校验工作人力有限的实际情况,介绍了一种能一次同步校验12只电压互感器的高效方法,分析了电压互感器误差组成,基于高端测差法设计了多只电压互感器同步校验系统接线方案,对12只电压互感器并联给标准电压互感器带来的附加误差进行了理论分析与计算,并通过试验验证了误差理论的正确性及校验方案的可行性。

Error Analysis of Multi-Voltage Transformers Synchronous Calibration

With the establishment of the provincial measuring center, the need for voltage transformer calibration is greatly increased while the capability of calibration is limited. In this paper, a new voltage-transformer calibration system is introduced, which can calibrate 12 voltage transformers synchronously. And then the component errors of voltage transformer are analyzed. Based on the high-end error measuring method, a synchronous calibration scheme of multiple voltage transformers is designed. Finally, the additional errors of the standard voltage transformer caused by parallel connection of 12 voltage transformers are analyzed. The theory of synchronous calibration error and the practicability of calibration scheme are verified by experiments.