基于最小路集的数字化变电站继电保护系统的研究

Study of the digital substation relay protection system based on the path set

数字化变电站继电保护系统的动作正确与否直接影响着电力系统的安全性和可靠性,提出了基于最小路径集的数字化变电站继电保护系统。首先,分析了数字化变电站继电保护系统,分别从数字化变电站继电保护的技术特征、系统组成、通信、以及特点等方面进行了分析;其次,针对数字化变电站提出了最小路径集算法,并对数字化变电站几点保护系统的可靠性进行模型构建;最后,采用某500kV变电站继电保护系统,进行实际算例仿真,仿真结果的可靠性为0.982 6,验证了所提方法的有效性和可靠性能。

In view of the digital substation relay protection system of action is correct or not directly affects the security and reliability of the power system,based on the minimum path sets of digital substation relay protection system.Firstly,the digital substation relay protection system is analyzed,and the technical characteristics,system composition,communication and characteristics of digital substation relay protection are analyzed.Secondly,the minimum path set algorithm is proposed for digital substation,and the reliability of several protection systems of digital substation is constructed.Finally,a 500 kV substation relay protection system is adopted to carry out the actual numerical simulation.The reliability of the simulation results is 0.982 6,which verifies the effectiveness and reliability of the proposed method in this paper.