| the article analyzes the primary feature of Shengli Oilfield power grid, climate change of Shenli Oilfield, lightning strike statistics and analysis on power system and typical thunder overvoltage and thunder protection method for transmission system and distribution system of Shengli Oilfield. Then thunder protection measure and project for Shengli Oilfield power grid is proposed. Thunder overvoltage characteristics and protection method for transmission lines is studied, Research has been made on reason, types and calculation method of thunder overvoltage. Thunder protection measure and equipment for various voltage levels under different thunder overvoltage has been summarized. Furthermore, the article analyses various thunder protection equipment, measure and relevant application and selection. Based on achievement on thunder protection research at home and abroad and analysis of thunder feature in Shenli Oilfield, proposal and project have been put forward for thunder protection for Shengli Oilfield power lines. At the same time, technical management method and proposal has been put forward for thunder overvoltage. |
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