The Research On Condition Monitoring System Of High Voltage Transmission Line Based On Electric Field

As an important part of the whole power system,the stability of the high voltage transmission line is directly related to the stability of the whole power system.This paper mainly studies for overhead transmission lines of the operating state of the real-time monitoring and fault diagnosis in time and hope to achieve predictive maintenance system,to improve the stability of electric energy systems.The electric field is an important parameter of electric power equipment based on the electric field around the transmission lines around the transmission line state monitoring and fault diagnosis is relatively weak,and the electric power equipment protection has some significance.The theoretical simulation and experimental results show that the electric field around the high voltage transmission line in the high voltage transmission line in a variety of conditions,the distribution of the electric field around it has certain rules.In this paper,by monitoring the electric field around high voltage transmission line to monitor the running state of the high voltage transmission line,we can realize the non-contact monitoring of the running state of the high voltage transmission line.Two dimensional electric field model is established in this paper on overhead transmission lines around the use of charge simulation method and the simulation of various high-voltage transmission lines under the condition of two-dimensional electric field distribution phase operation,the electric field of high voltage transmission line of high voltage transmission lines around the running state of the feasibility of fault diagnosis based on ZigBee is established;Star electric network the acquisition,network can wire under electric field at multiple points and sent to the PC real-time acquisition of high-voltage transmission,host computer using Lab VIEW to build the field data receiving classification processing system,capable of receiving electric field data acquisition terminal according to the classification of different nodes.Finally,the support vector machine(SVM)classification of fault diagnosis of high voltage transmission lines,and the National Taiwan University Lin Zhireri(Lin Chih-Jen)associate professor has developed the LIBSVM transplanted to the field classification system,used for real-time on high voltage transmission line fault diagnosis and classification.Through simulation and experimental study on the fault diagnosis of high voltage transmission line based on electric field is feasible,it can do good to the high voltage transmission line fault diagnosis classification requires at least seven collection points in the layout of electric field under high voltage transmission line of support vector machine.This paper lays a foundation for the electrical characteristics around the high voltage transmission line based on the fault diagnosis of high voltage transmission line,fault diagnosis technology for high voltage transmission lines and the introduction of support vector machine fault classification technology.