220kV高压输电线路防雷接地技术研究
发布时间：2018-08-03 08:34
【摘要】：220kV高压输电线路分布广泛，是我国高压线路的主要形式之一，是连接各个变电站、各重要用户的纽带，是电力系统的大动脉，承载着居民的用电安全。220kV输电线路的安全运行，不仅直接影响用户的可靠供电，而且关系着整个电网的稳定性。输电线路的安全运行在电网中具有重要的地位，在国民经济中占据举足轻重的地位。雷击故障是220kV输电线的主要故障形式之一，因此本文通过对输电线路的分析，找出输电线路雷击故障特点，并进行建模计算，对雷击故障情况进行全面分析，制定切实可行的高压输电线路的技术措施，降低输电线路的雷电绕击，保证输电线路雷击跳闸水平在合理的范围之内，提高了供电可靠性和电网的稳定性。通过对220kV输电线路常见的问题的分析，并对保定地区220kV高压输电线路防雷综合措施进行了研究，结合2008年～2010年保定地区雷击跳闸情况的统计分析，对典型线路的雷击故障进行了分析，并选择具体线路对其综合防雷措施的实施和效果进行阐述，最后对保定地区综合防雷措施进行了分析。
[Abstract]:220kV high voltage transmission line is widely distributed and is one of the main forms of high voltage transmission line in our country. It is the link connecting each substation and important users, and it is the main artery of power system, which carries the safety of electricity consumption of residents. 220kV transmission line runs safely. Not only directly affects the user's reliable power supply, but also relates to the stability of the whole power grid. The safe operation of transmission lines plays an important role in the power grid and plays an important role in the national economy. Lightning strike fault is one of the main fault forms of 220kV transmission line. Therefore, through the analysis of transmission line, this paper finds out the characteristics of transmission line lightning strike fault, and carries on the modeling calculation, carries on the comprehensive analysis to the lightning strike fault situation. The feasible technical measures for high voltage transmission line are formulated to reduce the lightning wound failure of transmission line and to ensure that the lightning tripping level of transmission line is within a reasonable range. The reliability of power supply and the stability of power network are improved. Based on the analysis of common problems of 220kV transmission line, the comprehensive measures of lightning protection for 220kV high voltage transmission line in Baoding area are studied, combined with the statistical analysis of lightning tripping in Baoding area from 2008 to 2010. The lightning strike faults of typical lines are analyzed, and the implementation and effect of comprehensive lightning protection measures are expounded by selecting specific lines. Finally, the comprehensive lightning protection measures in Baoding area are analyzed.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM862
本文编号：2161188
[Abstract]:220kV high voltage transmission line is widely distributed and is one of the main forms of high voltage transmission line in our country. It is the link connecting each substation and important users, and it is the main artery of power system, which carries the safety of electricity consumption of residents. 220kV transmission line runs safely. Not only directly affects the user's reliable power supply, but also relates to the stability of the whole power grid. The safe operation of transmission lines plays an important role in the power grid and plays an important role in the national economy. Lightning strike fault is one of the main fault forms of 220kV transmission line. Therefore, through the analysis of transmission line, this paper finds out the characteristics of transmission line lightning strike fault, and carries on the modeling calculation, carries on the comprehensive analysis to the lightning strike fault situation. The feasible technical measures for high voltage transmission line are formulated to reduce the lightning wound failure of transmission line and to ensure that the lightning tripping level of transmission line is within a reasonable range. The reliability of power supply and the stability of power network are improved. Based on the analysis of common problems of 220kV transmission line, the comprehensive measures of lightning protection for 220kV high voltage transmission line in Baoding area are studied, combined with the statistical analysis of lightning tripping in Baoding area from 2008 to 2010. The lightning strike faults of typical lines are analyzed, and the implementation and effect of comprehensive lightning protection measures are expounded by selecting specific lines. Finally, the comprehensive lightning protection measures in Baoding area are analyzed.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM862
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