The Study & Actualize Of The Self-defined Principle In Relay Coordination System

The structure of power system is more and more complex in present days, which makes the coordination of power system more difficult. Because of the configuration's difference in different areas, the existing power system coordination software are not enough flexible in different areas. This paper introduced a way to solve the flexible problems, which using the VBScript's characteristic of real time compiling, and achieved the purpose to define coordination principles in locale.This paper introduces the theoretical basis of coordination, and then from the system modeling, system design and actualize three areas discussed in detail the entire process of determining the system.In System Modeling, from basic theoretical studies and analysis, got the conclusion that Self-define-principle is necessary. And last finished the principles'mathematic models.In System Design and actualize,this paper import the technology of ActiveX scripting. And give an introduction about ActiveX scripting's origin, structure and use. In the end, through an example explaining how to define a principle.Based on the method in this paper, some programs have been put into practice in some areas. Through the application indicates that the system has good flexibility and expandability, and have high practical value.