Analysis On The Transmission Line State Inspection Cycle

The traditional equipment inspection work is carried out inspection ofequipment, fixed point, people regularly, its characteristic is theinspection position and fixed period, has nothing to do with the state of the equipment, the reliability is not high and easy to produce rules of faultequipment can be used. However, with the rapid growth of the nationaleconomy, the power grid has entered a rapid growth stage, the increasing transmission equipment, and greatly improve the quality of the construction under the condition of overhead transmission lines, still use the traditional inspection period to regular or fixed cycle based, nomethod of the drawbacks of this patrol difference, if still blindly, in accordance with the previous regular inspection way, is bound to create a certain section of "live" tour, and some dangerous point, special area,susceptible to external damage area inspection deficiencies, resulting in a large number of manpower, material and financial resources, waste,and can not be timely grasp the operation status of equipment, to the safe operation of power network hidden danger. Therefore, it is necessary according to the different factors and comprehensive analysis on the operation of transmission line, dynamic variable study seasonal,regional, inspection period.In this paper, the transmission line in the network of limited company of Liaoning province power supply company of Dalian jurisdiction, frombefore the fault reason,2006-2014 years of times and yet failure bydefect type patrol found in statistics, based on the number and defect type fault reason, statistics on, summarizes the factors influencing the line condition.The statistical analysis of careful data analysis and related hazards arethe reason, according to the type of each fault, determine whether thefactors affecting the transmission line state inspection cycle. Thelightning, floater, car touch line, ice dancing, flashover affected area is larger, according to the impact of regional distribution condition, the formation of drawing principle, draw the regional distribution map.Every kind of factors will impact and damage to transmission lines, so it is necessary to determine the weight distribution of each factor. This paperadopts the methods of determining the weight of factors AHP method the weight of each factor allocation. In 30 days as a benchmark, influence of transmission line is divided by the time patrol cycle coefficient, to obtain the dynamic variable inspection period.