变电站继电保护运行参数自动控制系统研究

Automatic Control System of Substation Relay Protection Operation Parameters

大量的分布式电源接入电网中,对电网安全稳定运行提出了很大的挑战,尤其是与变电站内继电保护装置的相互配合成为一大难题。基于Java编程语言构建了一个设定值计算和协调服务主体架构,开发了相应的程序算法,在PSCAD中搭建了IEEE 14网络测试模型,通过零序电流保护、最大电流保护和距离保护3种不同的保护方式来验证服务架构计算设置的正确性。搭建的微服务架构计算的定值能够提高继电保护的选择性和灵敏性,降低分布式电源接入电网时对电网的扰动。

A large number of distributed power supplies are connected to the power grid,there are great challenges to the safe and stable operation of the power grid.Especially,the coordination with relay protection devices in substations has become a major challenge.The study firstly constructs a main architecture for setting value calculation and coordination services based on Java programming language,develops corresponding program algorithms,builds an IEEE 14 network testing model in PSCAD to verify the correctness of the service architecture calculation settings through three different protection methods:zero sequence current protection,maximum current protection,and distance protection.The fixed value calculated by the constructed microservice architecture can improve the selectivity and sensitivity of relay protection,and reduce the disturbance to the power grid when distributed power sources are connected to the grid.