电网过电压分析与监测技术.doc
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电网过电压分析与监测技术,2.4万字自己原创的毕业设计，今年最新的，仅在本站独家提交，大家放心使用摘要 随着近年来社会经济的快速发展，电力系统的配电网络日益庞大，自然灾害尤其是雷电所引起的配电网络故障风险也在随之上涨。如何减少雷电灾害对配电网的影响，确保配电网的安全运行，以此来减少日常生产中的停电时间，已经成为电力企业首...
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电网过电压分析与监测技术
2.4万字
自己原创的毕业设计，今年最新的，仅在本站独家提交，大家放心使用
摘要 随着近年来社会经济的快速发展，电力系统的配电网络日益庞大，自然灾害尤其是雷电所引起的配电网络故障风险也在随之上涨。如何减少雷电灾害对配电网的影响，确保配电网的安全运行，以此来减少日常生产中的停电时间，已经成为电力企业首先要解决的问题。
配电网的组成由配电线路、配电提供所、配电用户等三方面所组成的，对于配电网的功效就是成功的把电力安全的输送给用户，保证用户用电的正常。通常对于10KV以下的电压，一般都是由配电线路直接对配电用户提供电压的，但是其中对于配电网有着一个非常大的漏洞，那就是其绝缘水平地下，所以特别容易产生绝缘事故。
对于电力系统事故的原因，根据其能量来源，主要分为两点：内部过电压和雷电过电压。目前，国外例如韩国、日本、美国、台湾等国家和地区对两类过电压的防护研究及应用已相当成熟，虽然我国也一直致力于推动电网的防雷工作，但由于直击雷过电压对配电网的影响比较大，目前大部分电力企业对雷电过电压的研究仍主要集中在直击雷过电压上，对感应雷过电压的研究相对较少。
电网的防护，很大程度要以电网的分析和监测得到数据结果作为基础，才能更好的进行相关的防护措施。本课题主要从实际出发，将直击雷电过电压和感应过电压对线路的影响进行对比、寻找感应过电压的形成原因，通过雷电感应过电压模型的研究，分析雷电流的参数、线路高度、累计点、大地电导率等对架空输电线路感应雷电过电压幅值和波形的影响，以及线路避雷器的安装方式、安装位置对配电网架空输电线路感应过电压的防护能力，达到限制，降低感应雷电过电压的目的。通过分析、监测，为配电网络的防雷工作提供依据和参考。
关键词：电网 过电压 在线监测 ATP
Overvoltage analysis and monitoring technology
ABSTRACT With the rapid development of social economy in recent years, the distribution network of power system increasingly large, natural disasters, especially the lightning caused by distribution network failure risk is also rising. How to reduce the influence of lightning disaster for the distribution network, to ensure the safe operation of distribution network, in order to reduce the daily production outage time, has become the first to solve the problem of electric power enterprise.
The composition of the three aspects of distribution network by the power distribution lines, distribution, distribution of the user, for distribution network effect is successful to transport electricity safety to the user, ensures the normal power. Usually for a voltage below 10KV, usually directly from the distribution line to provide voltage distribution, but there is a very big holes in the distribution network, which is the insulation level underground, so it is especially easy to produce insulation accident.
The reason for the failure of electric power system, according to the sources of energy, could be divided into two parts: Internal Overvoltage and lightning over voltage. Statistics show that, the harm of lightning overvoltage is bigger, and the harm of lightning mainly in two forms: direct lightning overvoltage and lightning induced over voltages. At present, such as Korea, Japan, foreign American, Taiwan and other countries and regions on two types of overvoltage protection research and application has been quite mature, although China has been committed to promoting the lightning protection network, but due to the lightning over voltage of the distribution network is relatively large, the most power enterprises over voltage the lightning was concentrated over voltage on direct lightning overvoltage, study on lightning induced less .
Power system protection, to a large extent by the analysis and monitoring of grid data as the basis, the relevant protective measures to better. This paper mainly embarks from the reality, will direct lightning overvoltage and induction were compared, effects of over voltage on the line for the causes of induced overvoltage, research by lightning induction voltage model, analysis of the influence of the parameters of lightning current, line height, total point, the earth electrical conductivity on overhead transmission line lightning induction over voltage amplitude and waveform, and installation, the installation position of the line arrester Overvoltage on overhead transmission line in distribution network induction protection capability, limit, reduce the overvoltage induction lightning to. Through the analysis, monitoring, and can provide reference for lightning protection of distribution network.
Key words Power grid Over voltage Online monitoring ATP
目录
引言 1
第一章 概述 2
1.1过电压分析与在线监测的意义 2
1.2 国内外研究现状及发展趋势 4
1.2.1 国内外研究现状介绍 4
1.2.2国内外研究现状分析 5
1.2.3发展趋势分析 9
1.3本课题的研究内容 10
1.4小结 10
第二章 过电压分类及特点 11
2.1 大气过电压 11
2.1.1雷电形成过程 12
2.1.2雷电过程 12
2.1.3雷电过电压分类及特点 13
2.1.4雷电对高压输电线路的影响 13
2.2 内部过电压 13
2.2.1工频过电压 14
2.2.2 操作过电压 15
2.2.3谐振过电压 16
2.3 小结 17
第三章 过电压的防护措施和参数计算 18
3.1关于雷电过电..
2.4万字
自己原创的毕业设计，今年最新的，仅在本站独家提交，大家放心使用
摘要 随着近年来社会经济的快速发展，电力系统的配电网络日益庞大，自然灾害尤其是雷电所引起的配电网络故障风险也在随之上涨。如何减少雷电灾害对配电网的影响，确保配电网的安全运行，以此来减少日常生产中的停电时间，已经成为电力企业首先要解决的问题。
配电网的组成由配电线路、配电提供所、配电用户等三方面所组成的，对于配电网的功效就是成功的把电力安全的输送给用户，保证用户用电的正常。通常对于10KV以下的电压，一般都是由配电线路直接对配电用户提供电压的，但是其中对于配电网有着一个非常大的漏洞，那就是其绝缘水平地下，所以特别容易产生绝缘事故。
对于电力系统事故的原因，根据其能量来源，主要分为两点：内部过电压和雷电过电压。目前，国外例如韩国、日本、美国、台湾等国家和地区对两类过电压的防护研究及应用已相当成熟，虽然我国也一直致力于推动电网的防雷工作，但由于直击雷过电压对配电网的影响比较大，目前大部分电力企业对雷电过电压的研究仍主要集中在直击雷过电压上，对感应雷过电压的研究相对较少。
电网的防护，很大程度要以电网的分析和监测得到数据结果作为基础，才能更好的进行相关的防护措施。本课题主要从实际出发，将直击雷电过电压和感应过电压对线路的影响进行对比、寻找感应过电压的形成原因，通过雷电感应过电压模型的研究，分析雷电流的参数、线路高度、累计点、大地电导率等对架空输电线路感应雷电过电压幅值和波形的影响，以及线路避雷器的安装方式、安装位置对配电网架空输电线路感应过电压的防护能力，达到限制，降低感应雷电过电压的目的。通过分析、监测，为配电网络的防雷工作提供依据和参考。
关键词：电网 过电压 在线监测 ATP
Overvoltage analysis and monitoring technology
ABSTRACT With the rapid development of social economy in recent years, the distribution network of power system increasingly large, natural disasters, especially the lightning caused by distribution network failure risk is also rising. How to reduce the influence of lightning disaster for the distribution network, to ensure the safe operation of distribution network, in order to reduce the daily production outage time, has become the first to solve the problem of electric power enterprise.
The composition of the three aspects of distribution network by the power distribution lines, distribution, distribution of the user, for distribution network effect is successful to transport electricity safety to the user, ensures the normal power. Usually for a voltage below 10KV, usually directly from the distribution line to provide voltage distribution, but there is a very big holes in the distribution network, which is the insulation level underground, so it is especially easy to produce insulation accident.
The reason for the failure of electric power system, according to the sources of energy, could be divided into two parts: Internal Overvoltage and lightning over voltage. Statistics show that, the harm of lightning overvoltage is bigger, and the harm of lightning mainly in two forms: direct lightning overvoltage and lightning induced over voltages. At present, such as Korea, Japan, foreign American, Taiwan and other countries and regions on two types of overvoltage protection research and application has been quite mature, although China has been committed to promoting the lightning protection network, but due to the lightning over voltage of the distribution network is relatively large, the most power enterprises over voltage the lightning was concentrated over voltage on direct lightning overvoltage, study on lightning induced less .
Power system protection, to a large extent by the analysis and monitoring of grid data as the basis, the relevant protective measures to better. This paper mainly embarks from the reality, will direct lightning overvoltage and induction were compared, effects of over voltage on the line for the causes of induced overvoltage, research by lightning induction voltage model, analysis of the influence of the parameters of lightning current, line height, total point, the earth electrical conductivity on overhead transmission line lightning induction over voltage amplitude and waveform, and installation, the installation position of the line arrester Overvoltage on overhead transmission line in distribution network induction protection capability, limit, reduce the overvoltage induction lightning to. Through the analysis, monitoring, and can provide reference for lightning protection of distribution network.
Key words Power grid Over voltage Online monitoring ATP
目录
引言 1
第一章 概述 2
1.1过电压分析与在线监测的意义 2
1.2 国内外研究现状及发展趋势 4
1.2.1 国内外研究现状介绍 4
1.2.2国内外研究现状分析 5
1.2.3发展趋势分析 9
1.3本课题的研究内容 10
1.4小结 10
第二章 过电压分类及特点 11
2.1 大气过电压 11
2.1.1雷电形成过程 12
2.1.2雷电过程 12
2.1.3雷电过电压分类及特点 13
2.1.4雷电对高压输电线路的影响 13
2.2 内部过电压 13
2.2.1工频过电压 14
2.2.2 操作过电压 15
2.2.3谐振过电压 16
2.3 小结 17
第三章 过电压的防护措施和参数计算 18
3.1关于雷电过电..
