High-voltage power equipment insulating material aging evaluation method based on accumulated charge characteristics

• Main Authors: XU DAN, ZHANG ZEHUI, GE HUA, LIU JUNPENG, QI ZHANHUA, QI YANFENG, LI YING, LI JIN, BI JINGGUO, DU BOXUE, ZHAO RENYONG
• Format: Patent
• Language: Chinese; English
• Published: 13.10.2020
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention discloses a high-voltage power equipment insulating material aging evaluation method based on accumulated charge characteristics, and relates to the field of quality control and state evaluation of insulating materials in high-voltage equipment. An accumulated charge measurement system and an evaluation method are included. The accumulated charge measurement system comprises a current integration system, a high-voltage power supply, a device to be measured, a receiver and a PC. The current integration system is inserted between a high-voltage power supply and a device to be tested. The integral value is transmitted to a receiver through microwaves, and are transmitted to a PC; according to the method, a direct current integration method is applied to calculation of the accumulated charge quantity in the insulating material, the insulating performance is evaluated by comparing the initial charge quantity in the insulating material with the charge quantity accumulated in specific time after high v