Risk Assessment And Bird Monitoring System Design Of Transmission Lines In Jiangxi Province

In recent years,the improvement of ecological environment in Jiangxi makes the transmission line bird fault frequent,which has become the third major transmission line fault tripping reason after lightning strike and external force damage.Although Jiangxi power departments have also taken a lot of bird prevention measures,but the effect is very little,or insufficient protection,or in vain,so that the bird prevention device can not be very good to achieve the effect.Therefore,it is necessary to build a bird damage assessment model for transmission lines to improve the pertinence of bird damage prevention work.The main work contents of this paper are as follows:(1)Collected and analyzed in nearly 10 years of Jiang xi power grid units directly under the jurisdiction of the sound transmission line trip fault data,the frequent transmission lines in regions of the sound field,and geographical environment of fault point and line structure characteristics were mainly studies in the field,and research of the sound transmission line nationwide each area prone to geographical environment characteristics.(2)The brief analysis of the current common bird proof device jiang xi power grid,and cited some anti bird device failure of typical cases,analyzes the advantages and disadvantages of all kinds of birds device and its applicable conditions,and the aging of the fall on the transmission line,or the analysis of the experiment device to prevent bird it is concluded that the reasons of failure of the bird,for subsequent monitoring system has guiding significance for the design of the birds.(3)The collected data were sorted out and analyzed reasonably,the characteristics and main causes of bird damage fault trip of transmission lines in Jiangxi power grid were studied,and the main influence indexes of bird damage evaluation grade were extracted.According to the different level distribution,the weight coefficient of each level index was calculated,and the contribution degree of each bottom index to the bird damage level index was calculated by reasonable mathematical method.Then according to the weight coefficient of each level index and the contribution degree of the bottom level index to the bird damage rating index,the model of bird damage rating evaluation was established.Finally,the rationality and reliability of the bird damage evaluation model were verified by using the repeated trip tower data.(4)Based on doppler response are studied birds activity monitoring technology,through the use of microwave doppler detection technology,realize the monitoring of birds on the transmission line,activities,and design the monitoring system for microwave radar detection module,video capture module,image acquisition and processing module,the last of the monitoring system for microwave response characteristic test,test results show that monitoring system to achieve the desired effect.