分体式绝缘子检测机器人的电场分析及测试试验

The Electric Field Analysis and Testing Experiments of Split-Type Insulator Detection Robot

超、特高压输电线路绝缘子串较长,采用绝缘子检测机器人检测更为方便和有效。但目前的绝缘子检测机器人主要为攀爬方式,体积大、结构复杂,需要进行改进。为此设计了一种适用于悬垂绝缘子串检测的轻便型分体式绝缘子检测机器人,对绝缘子机器人周围的电场分布进行了仿真计算与分析,并进行了220 k V绝缘子串的测试试验,结果表明:所设计的检测机器人本体最大电场强度为1 753 k V/m,不会发生起晕;绝缘子检测机器人的测量电压值小于绝缘子原始电压分布值,可通过补偿修正得到实际的绝缘子电压分布,并进行低、零值绝缘子检测。

The insulator strings of EHV and UHV transmission lines are long,and it is more convenient and effective to detect insulators with robot.The current insulator detection robots are mainly climbing style,large in volume and complex in structure,and needs to be improved.Therefore,a split-type insulator detection robot is designed,which is suitable for detection of the suspended insulator strings.The electric field distribution around the insulator robot is simulated and analyzed.The designed robot is tested for a 220 kV insulator string.The results show that the maximum electric field strength of the split-type robot is 1 753 kV/m and no partial discharge occurs.The voltage measured by the insulator detection robot is less than the original voltage distribution value of the insulator.The actual voltage distribution of insulators can be obtained through compensation and correction.The robot is used to test the low/zero resistance insulators.