Evaluation And Countermeasures Of Saibei Area500kV Power Transmission Lines Status

As the core lifeblood of the power transmission, the running quality of Saibei area500kV transmission lines, have great influence on maintaining the operation reliability of the Saibei area power system. Especially, for those long-lived transmission lines, only through timely condition assessment, can grasp accurately the running state of the equipments, and solve the potential problems in times, and prolong service life, and maintain the safety and stability of the power grid.The condition assessment of Saibei area500kV transmission line include the evaluation of the earthing devices, towers, insulator strings, wire and the drainage, line metal wire, affiliated facilities, circuit and other important channel of the overhead transmission lines, then identify various signs of degradation, and solve the problem timely in the bud processing.This paper firstly based on the contents and requirements of500kV power transmission lines state standards and evaluation, establish a complete state evaluation index system, including seven primary indexes-earthing devices, towers, grounding insulator string wire, wire and the drainage, line metal wire, auxiliary facilities, line channel and twenty-four secondary indexes. Second, evaluate the operation state of Saibei area500kV power transmission lines Saibei through grey ahp method analysis, and divide the evaluation standards into "optimal","good","medium", and "poor" four ranks, then evaluate the Saibei area state empowerment through ahp, whose results showing that the Saibei area state of500kV power transmission lines between "good" and "bad" at present. At the same time, according to the gray analysis results, most evaluation index states are between "good" and "bad". In view of these, and based on the current situation and evaluation results of Saibei area, this paper analyzes the reasons of failure in Saibei area500kV power transmission lines, mainly including:ice cover, lightning, the bird, and wind oscillation etc. Finally, according to the four aspects of existence fault, propose the corresponding prevention and control measures.At present, the Saibei area transmission lines have not reached the state overhaul of the technical level, and there is only evaluation result, without corresponding management measures to cooperate, and I hope to research more in the future.