A Study on the Heat Detection Method of Insulators in the Cross Section of Transmission Lines
The reliability of insulators directly affects the safety of the power system.To reduce potential safety hazards in the power grid,a heat detection method for insulators in cross crossing transmission lines is proposed.First,the characteristics of insulator polarization effect,leakage and surface creepage are analyzed,and the heating power and temperature rise are calculated respectively.Second,the whole structure of the photoelectric sensor is constructed by using components of the adjusting circuit,control equipment,sensor head and power supply.Combined with the idea of integration,the connection mode of the traditional sensor head is improved,and the packaging method is adopted to improve the optical path coupling efficiency.The discrete equation is linearized by Kalman filter algorithm.According to the collected information,the change of photoelectric field intensity is recorded;the birefringence and phase difference of the main direction axis of the crystal is calculated;the photoelectric intensity around the insulator is obtained to detect whether the insulator is heated.Finally,the experiments show that the proposed method has high authenticity,high degree of linear fitting and strong feasibility.By making full use of the advantages of the photoelectric sensor the method can accurately detect the performance of insulators.
NETL
NSTL
万方数据
