With the development of market economy, high-voltage XLPE insulated conductor, as a key component of urban transmission line, plays an important role in maintaining the safe and stable operation of urban high-voltage line. The completion acceptance test of high-voltage conductor is a defect test before the investment and operation of high-voltage cable lines. It is an important link to prevent the investment and risk operation of high-voltage cable line. Based on the actual application of acoustic imaging technology in the partial discharge test of high-voltage distribution equipment, this paper puts forward the detection algorithm of high-voltage electrical equipment, tests the traditional AC withstand voltage method and the number of defective lines and acceptance lines when acoustic imaging is applied to the partial discharge detection method of high-voltage electrical equipment. The test results show that after the acoustic imaging proposed in this paper is applied to the partial discharge detection technology of high-voltage electrical equipment, the defect detection rate in the complete acceptance test of high-voltage cable is improved, while the number of operating lines with faults caused by small defects is reduced, which effectively reduces the number of high-voltage cables with faults caused by hidden dangers. It is verified that the application of acoustic imaging in partial discharge detection of high-voltage electrical equipment can effectively improve the fault detection rate of high-voltage cable completion acceptance and reduce the hidden dangers of high-voltage cable belts. The application of acoustic imaging in partial discharge detection of high voltage electrical equipment is the general trend in the future.
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