Online detection system for contaminated insulators based on ultra-violet pulse method
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In recent years, the contamination extent of insulators gets worse and worse, which leads to heavy pollution flashover of transmission line and power station in China. Based on ultraviolet pulse method, this paper introduces an online pollution monitoring system about its whole structure, hardware and software design. It also illustrates the experiments in the lab and in the field by monitoring continually the insulator strings under 110 kV transmission line. Meanwhile, it analyzes experiment and operation results, which proves that it is possible for this system to online monitor all insulators along the transmission line. Moreover, it can inform the pollution situation of insulators in advance, which is helpful to guarantee security of transmission line and reliable operation of power grid, and avoid large-scale pollution flashover accidents. This system has been using by local Power Supply Bureaus and proving the advantage of low price, high sensitivity and quick response speed.