Research on Continuous Operation State Detection Method of Arrester in 10 kV Intelligent Substation
Aiming at the problems of untimely detection and poor detection effect caused by the precision limitation of arrester operation state detection equipment and environmental interference,etc.,the continuous operation state detection method of arrester in 10 kV intelligent substation is designed.Combining singular spectrum analysis and sliding window method,the leakage current of 10 kV intelligent substation arrester is denoised.The leakage current component of arrester is obtained by decomposing the denoised arrester leakage current and operating voltage through Fourier series.The arrester operating state detection device is established by combining the leakage current component to realize the operating state detection.The test results show that the proposed method has good denoising ability for arrester operation current;after 50 min of operation,the arrester operation current is stabilized at 26 mA;after 29 min of operation,the arrester operation voltage is stabilized at 60 V;the error between the detected value of the current and the voltage and the actual measured value is small.The application of the method can realize intelligent and automatic detection and management of substation,and improve the safety and stability of substation operation.
Intelligent substationArresterLeakage currentSingular spectrum analysisSliding windowOperation state detection
NETL
NSTL
万方数据
