Protection Coordination Software For Distribution Networks Based On C/S

Protection coordination software is widely used in power system nowadays. The development and application of protection coordination software has helped a lot to improve operating of relay protection setting. Almost all of them are programmed to serve the large power grid, so they cannot content the desire of distribution networks. Because distribution networks has his own characteristic. This paper summarizes and analyzes the particularity of distribution networks and protection coordination software for distribution networks based on Client/Server is presented.Based on the analysis of the principle of designing protection coordination software, protection coordination software for distribution networks based on Client/Server is put forward in this paper.For assuring the expansibility, transplant and reuse of the software, establishing the self-contained relay coordination data structure is important. This paper studies the module for relay protection setting and designs the database of protection coordination software for distribution networks and builds value-sheet workflow management system and put foreword a application based on stored procedure and trigger.At the end of this paper, the application of AI technology for relay protection setting, graphic interface and adaptability is introduced.This system has been applied in EZhou power system successfully and achieved favorable performance.