水电站继电保护系统通用实时仿真建模方法研究

Real Time Simulation of Relay Protection System for Hydropower Plants

提出了大型水电站继电保护系统全范围实时仿真建模方法,介绍了继电保护仿真模型的结构层次划分;通过抽象,建立了通用的继电保护功能仿真模型,再由通用继电保护功能模型组建电气设备元件保护模型,进而建立整个水电站继电保护系统仿真模型.该设计方法缩短了模型的搜索计算时间,有利于实现仿真的实时性,有利于保护模型的开发和维护,并将该方法应用到了国家电力公司部级重点实验室——水电站仿真实验室的水电站仿真培训系统中.

This paper presents a real time simulation model of relay protection system for hydropower plants. In this model, the full-scale protection system is composed of sub-protective-system for each electric device in the hydropower plant, and each sub-protective-system consists of several components of relay protection with different functions. To achieve the real time simulation requirement, a general relay model is developed to model a versatile relay protection and a specific relay protection can be modeled through initialization of the general relay model with different specific parameters and coordination settings. By using these, the simulation modeling is much simple, and the computation time can be reduced enormously. This real time simulation model of protection system is successfully used in the hydropower plant operator-training simulator in the Hydropower Plant Simulation Laboratory——the Key Laboratory of the State Power Corporation of China.