Method and system for evaluating aging resistance of cable metal sheath protector

• Main Authors: LIU DANBING, LI DI, LI WENBO, HU XINXIN, LI HUIHONG, LI YILIN, HUANG JIAMING, YE YUTING, CHEN LIN, ZHU WUZHOU, CHEN ZHAOWEI, LIAO YANQUN, WU SIHENG, WANG YADI, YI YINXIANG
• Format: Patent
• Language: Chinese; English
• Published: 08.08.2023
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention relates to the technical field of cable device quality assessment, and discloses a cable metal sheath protector aging resistance assessment method and system, and the method comprises the steps: applying a DC aging voltage to a cable metal sheath protector, and determining a ZnO voltage-sensitive ceramic section sample containing a crystal boundary; according to the method, deep etching is carried out on a ZnO pressure-sensitive ceramic section sample containing the grain boundary in the grain boundary depth direction to obtain content distribution of grain boundary oxygen under different etching depths, so that the proportion of the grain boundary oxygen etched for the first time is determined, and the aging resistance of the cable metal sheath protector is evaluated according to the size of the proportion of the grain boundary oxygen etched for the first time, so that the aging resistance of the cable metal sheath protector is evaluated. Therefore, the aging resistance of the high-voltage cabl