地区电网保护定值校核专家系统的研究

THE RESEARCH ON AN EXPERT SYSTEM FOR RELAY SETTING VALUE IDENTIFICATION IN A LOCAL POWER NETWORK

应用专家系统理论及智能化程序设计方法,研制了一个可用于地区电网继电保护定值校核的专家系统:包括电网单线图动态显示、电网参数动态修改、短路电流计算以及保护定值校核等四个模块。采用Turbo Prolog语言中的模块化编程方法,将上述功能模块连接为一个有机系统并在IBM—PC/XT上进行了仿真试验。结果证明该系统具有较好的专家行为,可完成预期功能。

This paper presents an expert system which can be used in a local power network for the purpose of relay setting value identification. The system includes several modules,that is, network dynamic graphics module, network parameter modification module, network short-circuit calculation module and relay setting value identification module. The system is coded by Turbo Prolog language and the network short-circuit calculation module is coded by conventional Fortran language so that the expert system can be called as a hybrid system. The system has been tested on our Super AT-286 computer and the expected results has been obtained. It is very promissing that the expert system presented can be directly put into the actual local power network to reduce the human working and errors.