Abstract
Accurate measurement and localization of Partial Discharge (PD) is necessary for safe and stable operation of power equipment. Recently, the method based on the amplitude strength of Ultra High Frequency (UHF) signals has been proposed that bearing a low hardware requirement compared to time-difference-based methods. However, the widely studied fingerprinting based positioning technology is hard to deployed due to a heavy burden of fingerprinting map building. Therefore, this paper proposes an amplitude strength attenuation model and localization equation is proposed for PD localization in air-insulated substation. The field test is performed and the results show that the mean PD source localization error is 2.51 meters which is enough to distinguish the power equipment that having insulation deterioration.
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