Study Of Test Method For Large Grounding Impedance Without Removal Of The Grounding Wire

Studies include:Grounding impedance measurement of accurate circuit models and mathematical computing model; mechanism of the streaming effect of the grounding wire grounding impedance test; design and development of wireless transmission mode current transformer suitable for field application, for use in the lightning conductorshunt current testing; pole positioning (the voltage is very, very current) use of the GPS positioning device, the auxiliary ground; combination of field operating conditions are presented in the local power outage conditions, current transformer test shunt current through the wireless transmission, GPS positioning and installation of fixed auxiliaryground electrode, the establishment without removal of the grounding wire grounding impedance accurate measurement methods and run state of diagnostic methods, and complete hardware platform based on the test method development. The project implementation, provide effective protection for the operating status of the large ground network diagnostic, normal and reliable operation of the ground network and the entire system will have a huge economic and social benefits.