Grounding Resistance Measurement System for Electric Support Tower on Power Service

摘要

PURPOSE: A method and apparatus for measuring the grounding resistance of a transmission tower or distributing concrete pole being in hot-line state using leakage current are provided to eliminate a need for complicate design of a power supply, facilitate the operation and reduce the operation time. CONSTITUTION: Power equipments are measured by using the leakage current(64) in the transmission tower and the distributing concrete pole as current emitted from a general grounding resistance measuring device. The leakage current of the transmission tower and the distributing pole is measured by using detachable Rogowskii coil. The grounding resistance is measured only using voltage pole(17,18) without using current poles(15,16).