The Application Of Landslide Monitoring Technology In Transmission Line Online-Monitoring System

The construction of strong and unified smart grid in China, is the fundament of strong grid structure. One of the keys is to improve the grid security and to improve the ability of withstanding natural disasters and external damage. National network will cover a wide range of areas in China, and transmission lines are severely affected by various disasters, especially landslide. Developing a transmission line online-monitoring system and realization the landslide online-monitoring function, are important for the construction and safe operation of the smart grid. The related studies of landslide monitoring of transmission line online-monitoring system are presented in this paper.(1) A landslide monitoring method for transmission line online-monitoring engineering is studied. According to that, the new optimized method based on the traditional accumulate displacement method is proposed. In order to judge the stable states of landslides, the speed, acceleration and curve tangent angle are calculated with the accumulate diplacements after Kalman filtering.(2) According to the requirement of establishing 3-levels alarm standard that the State Grid proposed, the 3-levels threshold is established. By comparing the speed tangent angle of landslide with the threshold, it can realize the function of landslide monitoring and alarming.(3) A method to study rainfall's influence on transmission line landslide monitoring is described. The SPSS software is used to build the binary logistic relationship among landslide numbers, rainfall and rainfall time. With the binary logistic expression, the rainfall's influence on landslide can be studied, and it greatly improves the accuracy and timeliness of monitoring and alarming.(4) The landslide monitoring model in this paper is verified according to the typical landslide data. The results prove the correctness of the monitoring model.(5) The landslide monitoring function of transmission line monitoring system is designed detailedly. The landslide monitoring model is built in the database system, the front end processing function, the landslide monitoring and alarming function are realized. The designed interfaces are friendship.Finally, the results of the above researches are concluded, and direction for further study is proposed.