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The influencing factors and lightning protection measures of high voltage transmission lines lightning withstand level research and analysis on the basis of the existing transmission lines lightning research, a lightning calculation of transmission line towers, lightning withstand level calculation of the transmission lines, a comprehensive analysis of how to improve power system transmission line lightning protection level, so as to effectively reduce transmission line lightning trip rate, reduce the effects of lightning on the safe operation of power grids. The first expounded transmission lines lightning discharge principle, the introduction of lightning formation and development process, the Thunder voltage and lightning current formation process, porcelain breakdown discharge principle. Introduction lightning location system in lightning protection work, and at the same time introduce the main parameters of lightning and lightning parameters calculated. Introduction of order method of calculation method to calculate the tower lightning withstand level and by the law of the procedures, slightly conservative method of calculation results come to a point of order, not suitable for the modern grid high tower, for example, the same pole double-circuit transmission line and across the line. In-depth analysis of the existing problems in the calculation of the point of order method, briefly improved calculation method, and that the ATP-EMTP program counter the lightning withstand level and application of electrical transmission lines geometric model method to calculate the level of transmission lines LIGHTNING. This paper discusses the various factors affecting the high-voltage transmission lines lightning withstand level, including: tower grounding resistance line span, tower height, wire voltage, rod Tabo, impedance, and general high-voltage transmission lines to take the erection of lightning conductor to reduce ground protection angle, reduce tower grounding resistance, additional coupling ground to improve the line insulation coordination, installation of line type arrester installed automatic reclosing device lightning protection measures such as the principle role in the transmission line lightning protection design, how reasonable to choose the path of transmission lines, lightning protection measures targeted to reduce the rate of lightning trip transmission lines. Huizhou region in a severe thunderstorm activity areas, transmission lines the Louis by lightning and trip, through the Huizhou region 220kV and above transmission lines tripping and data statistics, analysis lightning trip reason and analysis Huizhou grid transmission high voltage The line to counter lightning withstand level and influencing factors LIGHTNING level, for the Huizhou grid high voltage transmission lines in different circumstances, the protective measures taken to ensure the normal operation of the high voltage transmission lines, improve the reliability and security of supply. Finally, the effect of the the Huizhou region integrated lightning protection measures taken in the actual operation and problems for the regional lines and transformation finish line in the practice.
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