The Construction Of Relay Protection State Maintenance Evaluation System For Taizhou Grid

Taking state maintenance for relay protection equipment as research topic, the paper carries out the relay protection equipment state maintenance application research work for Taizhou Power Bureau, focusing on the concept of state maintenance, the application range of relay protection equipment state maintenance, and information technology support, etc. With the increasingly complex power system, the development of the power grid structure, the traditional principle,"Expired maintenance must make compulsory repairing and must be well repaired" certainly will not adapt to the modern grid equipment maintenance requirements. Therefore, the secondary equipment must conduct maintenance according to the actual operation of state protection equipment.Present situation of relay protection the TaiZhou power grid relay protection is firstly represented in four aspects, from maintenance equipment types, content, maintenance and repair cycle purpose. Then the paper puts forward the concept of the state maintenance. The paper takes the state maintenance of Taizhou Power Bureau as example, lists the relay protection equipment distribution and operation situation, which leads to the necessity and feasibility study on state maintenance. Then the state maintenance evalution definition, principle, content and the standard of the TaiZhou power grid relay protection have been submitted.On the basis of the practical angle, the paper conducts research and development on a piece of secondary equipment state maintenance analysis and decision system. The paper mainly studies five core function module of the system:evaluation system, data platform, collection system, evaluation platform and assessment management, and puts forward system function analysis and overall design scheme. The corresponding database and reasoning process is designed, based on the study of second equipment status evaluation and state diagnosis. Furthermore, research and development work is carried out according to how to identify a database of evaluation standard and diagnosis of regular expressions.Through implementing the state maintenance project of secondary equipment for Taizhou grid, the original regular maintenance and repairing tansmits into state maintenance, which can avoid the blindness of the overhaul,meanwhile achieves the economic performance and reliable operation of the equipment.