以故障前补偿电压为基准量的距离继电器研究

以相量平面法与阻抗平面法为分析手段,提出一种以故障前补偿电压为基准量的故障分量距离继电器构成方法。通过对该方法的研究,揭示了目前常用的基于故障分量的距离继电器的通用表达式与动作特性,对比了这几类距离继电器在可靠性与灵敏性上的差异。最后,结合文章提出的方法,对利用通用表达式构成快速距离继电器进行了研究,给出了具体的构成方法。据此方法可明显地改善目前距离继电器的动作速度,并方便地构造新型快速距离继电器。

Study on Distance Relay Based on Pre-Fault Compensated Voltage

Using the vector plane analysis and impedance plane analysis,this paper presents a fault-component based distance relay construction method which uses the pre-fault compensated voltage as datum component.By the research,the paper explains the essence and the character of several types of common-used fault-component based distance relay,compares their difference in the reliability and sensitivity.Finally,combing the presented method,the paper performs research on constructing fast-distance relay using the universal expression,and gives the detail realization solution scheme.According to the scheme,it is easy to improve the trip speed of the present distance relay and expediently construct the new-type fast distance relay.