Improve And Optimize The Setting Calculation Intelligent System Of Power Plant

Power plant protection setting calculation software help setting calculation staffs to improve the efficiency. The relay setting calculation intelligent system of power plant (SCIS) has been developed by power system intelligent engineering and simulation research institute of North China Electric Power University. This system has been applied to Hunchun power plant and its application effect was good. But the system still exist some deficiencies which restrict the application of the system, such as large amount of human intervention, complex operation and it is difficult for staff to master.This paper improves and optimizes the deficiencies of the SCIS. Because the value sheet format of SCIS is cured in the process and can not flexibly correspond to change the external value sheet format, a method of automatically outputting the value sheet based on pattern matching is proposed. The pattern matching rule between setting result information and value templates outside the system is researched. Setting calculation results are filled in the value sheet templates, which is also realized. To minimize the amount of human intervention of setting calculation module of SCIS, this paper improves the "data-template" knowledge structure of setting calculation module of SCIS to "data-formula-template-instance" knowledge structure. And based on guide of calculating settings of relay protection for large generator and transformer, setting calculation procedures, some protective devices manuals, common relay protection setting calculation formulas, the basic formulas of the circuit, some setting calculation cases about power plants, a new knowledge base is constructed. On this basis, a new protection configuration generation module is developed which establish setting calculation templates of protective device.Based on the above contents, the relay setting calculation intelligent system of power plant will have intelligence and universality. And it further promote automatic finishing of modeling-computing-output "one click" relay setting calculation of power plant.