Research And Manufacture On Demarcation Load Switch For 10kV Overhead Feeder Users

With high increase of the economy and development of living standard, consumers require more and more high reliability of power supply. How to improve the reliability of power supply and miminize the outage frequency and duration for consumers has become an urgent problem. Based on the research of the demarcation load switch, the mathematics models of 10kV system short circuit and single- phase grouned are built, the measures to prevent the 10KV overhead line fault extending are proposed, the action principles of demarcation load switch are analyzed, the fixed value setting principles of demarcation load switch are presented, and the field experimentation of the devices are carried out, the results show the models and algorithms are effective and useful.