智能变电站电子式电流互感器的升流判向方法研究

Study on the Increasing Current and Direction Judgment Method of Electronic Current Transformer in Intelligent Substation

智能变电站电子式电流互感器目前缺乏一种能够模拟实际运行工况的升流验收方法。为此基于常规电流互感器的全站升流验收方法,提出了一种智能变电站电子式电流互感器升流验收方法。该方法在主变压器一次升流时,通过三相调压器同步加入相对应的二次电压,形成了电子式电流互感器的功率方向,从而实现智能变电站电子式电流互感器的直接升流判向。该方法简单且实用,具有广泛的推广与应用前景。

There is a lack of an increasing current acceptance method for the electronic current transformer in smart substations which can simulate actual operation conditions.Based on the whole substation increasing current acceptance methods for conventional current transformers,an increasing current acceptance method for the electronic current transformer in smart substations is proposed.When the primary current is increased in the main transformer in the method,a three-phase voltage regulator is used to simultaneously add a corresponding secondary voltage which forms the power direction of the electronic current transformer so that the increasing of current and direction judgment of the electronic current transformer in smart substations are realized.The method is simple and practical,and has broad popularization and application prospects.