两种计算避雷针保护范围的方法比较

论文总字数：19974字

摘 要

随着社会的进步与发展，电力成为了使用量最多运用范围最广的能源，在诸多影响电力系统正常使用的危害中，雷电天气是损失最大的一种。因此如何有效防治雷电天气对电力系统产生的损害成为了电力系统防护的重要课题之一。而避雷针防雷保护是当今社会研究所得出的防治雷电损害最为切实有效的方法之一。本文就将通过对避雷针两种计算方法——折线法和滚球法的分析，分析不同计算方式计算出的保护范围的差别，并讨论其对实际避雷保护的影响。

关键词：避雷针；保护范围；折线法；滚球法

Comparison of two methods for calculating the protection range of lightning rod

Abstract

With the progress and development of society, electric power has become the most widely used energy. Among the hazards that affect the normal use of power system, lightning weather is the biggest one. Therefore, how to effectively prevent the damage of lightning weather to power system has become one of the important issues of power system protection. The lightning protection of lightning rod is one of the most effective methods to prevent lightning damage. In this paper, through the analysis of two calculation methods of lightning rod - broken line method and rolling ball method, the difference of protection range calculated by different calculation methods is analyzed, and its influence on actual lightning protection is discussed.

Key words: lightning rod；protection range；Broken line method；Rolling ball method

目录

摘要-----------------------------------------------------------------------------------------------------------------------------------------I

3

Abstract------------------------------------------------------------------------------------------------------------------------------------II

第一章 引 言--------------------------------------------------------------------------------------------------------------------------1

1.1雷电的产生--------------------------------------------------------------------------------------------------------------------------1

1.2雷电的危害--------------------------------------------------------------------------------------------------------------------------1

1.2.1雷电对配电线路的危害----------------------------------------------------------------------------------------------------1

1.2.2雷电对输电线路的危害----------------------------------------------------------------------------------------------------1

1.3避雷针的工作原理-----------------------------------------------------------------------------------------------------------------1

1.4研究思路及研究方法-------------------------------------------------------------------------------------------------------------1

第二章 避雷针两种保护范围计算方法-----------------------------------------------------------------------------------------2

2.1避雷针的引雷性能----------------------------------------------------------------------------------------------------------------2

2.2折线法与滚球法-------------------------------------------------------------------------------------------------------------------3

2.2.1折线法---------------------------------------------------------------------------------------------------------------------------3

2.2.2滚球法---------------------------------------------------------------------------------------------------------------------------5

2.2.3两种计算方法保护范围的比较------------------------------------------------------------------------------------------7

2.3 110kv变电站避雷针保护参数计算-------------------------------------------------------------------------------------------9

2.3.1折线法时相同避雷针的保护参数---------------------------------------------------------------------------------------9

2.3.2滚球法时相同避雷针的保护参数--------------------------------------------------------------------------------------10

2.3.3两种计算方法防雷设计中的差异--------------------------------------------------------------------------------------12

2.4两种计算方法在变电所的运用-----------------------------------------------------------------------------------------------13

2.4.1折线法在变电所设计中的运用-----------------------------------------------------------------------------------------13

2.4.2滚球法在变电所设计中的运用-----------------------------------------------------------------------------------------14

2.4.3两种计算方法在变电所运用上的讨论-------------------------------------------------------------------------------15

2.5影响避雷针保护范围的因素--------------------------------------------------------------------------------------------------15

2.6两种计算方法的对比分析-----------------------------------------------------------------------------------------------------15

1. 结论----------------------------------------------------------------------------------------------------------------------------18

致 谢---------------------------------------------------------------------------------------------------------------------------------19

参考文献（References）------------------------------------------------------------------------------------------------------------20

第一章 引 言

剩余内容已隐藏，请支付后下载全文，论文总字数：19974字