煤矿电网防雷系统仿真研究(35kv).docx
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- 煤矿 电网 防雷 系统 仿真 研究 35 kv
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1、摘 要雷电是对人类生活、自然灾害,甚至是对生命财产产生重要威胁的因素之一,它是一种强烈的大气放电现象。并且防雷保护是当今社会的重要课题之一。煤矿生产所受雷电的影响是非常巨大的,重要的影响有:配电配置、用户配置和各类现代化配置等。时常会由雷害缘故引起毁坏配电装置的事故,从而使煤矿的安全生产产生隐患,对人们日常的生活也造成诸多不便;并且,煤矿广泛使用现代化设备,雷击过电压的干扰会对现代化设备产生影响;静电干扰等现象都是大型电子自动化设备所引起的,这样的干扰会使工作无法正常进行。煤矿供电系统仿真的防雷系统中的煤矿安全满足各项所需条件是非常必要的,对煤矿防雷系统的仿真,需要用科学的方法,同时指出煤矿的
2、防雷保护措施。建立起杆塔模型,进一步进行仿真,仿真内容主要是输电线路耐雷水平的仿真。通过对该模型的参数和连接结构的改变,针对雷电直击输电线路的两种主要形式(一种是雷电落在杆塔顶部或周围避雷线上,另一种是雷电绕过避雷线直接打在导线上)、接地电阻大小的变化对雷击过程的影响接地电阻大小的变化对雷击过程的影响进行仿真计算与结果分析,分析了输电线路在不同情况下遭受雷击所受到的影响、引起的故障,为建设和维护部门在实际输电线路上,更好的完善防雷保护措施,做出合理的理论依据,为实际输电线上的设计,需要运用科学的手段,准确的进行煤矿电网防雷研究,并且能够较快的得出准确的煤矿电网防雷措施,从而能够让煤矿的安全生产
3、得到保障,同时也确保它的安全运行。关键词:煤矿电网;防雷措施;仿真研究ABSTRACT Thunder is a phenomenon of heavy atmospheric discharge, which threatens human beings lives and wealth. So, thunder protection is an important question. The influence of thunder to colliery is mainly to distributing equipments, consumer equipments and moder
4、n equipments. Distributing equipments and consumer equipments often destroy by thunder accident, making dangerous to colliery and making people inconvenience. On the other hand, since colliery uses modern equipments, it makes great influence to electron component by overvoltage, over-current and sta
5、tic. So, thunder protection technology is important, we need research it with scientific attitude and make out measures. This paper introduces the basic knowledge of thunder overvoltage and lightning conductors. The research carries from two aspects: first equipments and second equipments. The first
6、 is the major of electric power system and the second one is the equipments used to inspecting, controlling, adjusting and protection. Then take out the measures. Finally, I select normal 35KV . Electrical-wire as study object, stimulating with ATP-EMTP. Mainly stimulating two aspects: the one is st
7、riking the electrical-wire, the other is the influence of grounding resistance. From the stimulations, I get some conclusions which present the influence of electrical-wire on different conditions. This is meaningful to colliery electric power system.Keywords: Electrical Power system; the measures o
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