多绕组高压电压互感器误差通用推算方法

为解决高压电压互感器现场校验耗时耗力,且易受停电计划影响和无法带实际二次负荷的问题,提出一种对不同绕组数均适用的电磁式电压互感器通用误差间接推算方法。该方法基于互感器误差基本原理,只需测量较少物理量就可得到实际运行条件下互感器误差。应用结果表明:推算法检测结果准确,大大减少了传统直接检测方法所需仪器设备数量,提高了互感器误差检测效率。

Universal error reckoning method of multiplewinding high voltage transformers

In order to solve the problem such as time-consuming and power-consuming of on-siteverification for high voltage transformers with liable affection by power failure plans and no way to takeactual secondary loads, a universal error reckoning method of electromagnetic voltage transformers wasproposed which adaptable to different winding numbers. This method is based on the basic principle oftransformer error, and only a few physical quantities need to be measured to obtain the actual operat-ing conditions of transformer error. The application results show that the reckoning algorithm hasaccurate detection results, greatly reduces the number of equipment required by traditional directdetection methods, and improves the efficiency of transformers error detection.