Research On Power Grid Relay Protection Coordination Software

According to the research on current situation of relay protection coordination software,the problems on universality and extensibility of current relay protection coordination software are pointed out.Solutions to the problem of universality are found out in this paper:user-defined adding and modifying calculation principles,user-defined adding and modifying caculation formulas.The functions are realized by the assist tool of Numerical value/Logic explanation interpreter. The proposed solutions not only make the setting calculation principles be configured flexibly, but also realize the functions of expandility and universality about the software.Besides, the setting caculation formulas and public formulas used in the software are contained in Dynamic-link library,so that the problem of edition controlling is solved, which is also in favor of the software upgrading. Users could self-defined flow control of relay protection setting,which not only realize the combination of setting calculation function and process management of setting,but also reduce work capacity of maintenance management information.