PSCAD/EMTDC自定义模型在继电保护仿真中的应用

The Application of the User-defined Model of PSCAD/EMTDC in Relay Protection Simulation

分析了PSCAD/EMTDC的软件结构,提出了基于PSCAD/EMTDC和C语言接口技术的自定义模型的实现方法,用C语言构建了以实际保护装置为原型的数字式距离保护模型。仿真结果表明,通过适当的接口技术可以实现自定义模型的功能,自定义模型的应用有效地提高了PSCAD/EMTDC在继电保护仿真中的灵活性。

The program structure of PSCAD/EMTDC is analyzed,and the method of realizing the user-defined model which is based on the interface technique between PSCAD/EMTDC program and C language is presented. A digital distance protection model is established with C language,which takes real relay protection device as prototype. Simulation results show that, the functions of the user-defined model can be realized,and the application of the user-defined model can effectively improve the flexibility of using PSCAD/EMTDC in relay protection simulation.