Cable fault intelligent diagnosis system and method

• Main Authors: YIN SHULAN, ZHOU QIPING, PAN MIN, HUANG XING, ZHANG BING, FAN HAIBO, XU FEI, SUN LIANGLIANG, ZHENG FEIXIANG, FAN SHEN, WU KAI, CHENG LIANGLIANG, LEE WON-TAEK, HUANG KAI, ZHANG ZHENGKAI, GE JINJIN, YIN WEISONG, QI ZHENBIAO, ZHAO JIANGUO, LUO YIZHAO, WANG ZHUANGZHUANG, YANG BINBIN
• Format: Patent
• Language: Chinese; English
• Published: 24.11.2023
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention discloses a cable fault intelligent diagnosis system and method, and the method comprises the steps: collecting and integrating the transmission limit threshold values of the voltage and current of a set safety cable in a distribution line according to the environment temperature and the insulation resistance value of different cable cross section areas in the distribution line; obtaining a reference distribution line cable voltage and current unit time transmission curve graph; taking the reference distribution line cable voltage and current unit time transmission curve graph as reference comparison data, and carrying out line environment temperature and insulation resistance value change monitoring on the received cable voltage and current at the to-be-checked position by using set short, medium and long line models; judging whether the cable voltage and current at the to-be-checked position are abrupt change cable voltage and current or not, and sending out a line fault signal according to th