Arcing Horn Lightning Protection Technology Research And Application

The main research topic in a parallel gap lightning protection at both ends of the insulator string. The gap breakdown voltage is lower than the breakdown voltage of insulator string, so the transmission line lightning shielding failure can preferentially insulator breakdown, the rapid discharge lightning current into the earth, so as to protect the insulator strings against the lightning breakdown gap after the power frequency follow current arc ignition. If the device and electric power system automatic reclosure properly, but also can effectively prevent arc broken wires due to power outages caused, reduce shielding line lightning accident rate. The main topics include:the power system insulation coordination based on traditional method, collect and analyze test data,35kV,110kV overhead lines arcing horn gap design is reasonable and the arcing distance; the installation of arcing horn110kV voltage withstand level, lightning trip-out rate were calculated, the calculation results display the subject developed a parallel gap lightning protection does not significantly increase the lightning trip-out rate of transmission line, and has the advantages of simple structure, convenient installation and maintenance, suitable for the actual transmission line...