4×200MW火力发电厂电气一次部分设计-张宁VIP专享

摘 要阳泉桃东发电厂为一煤矿的发电厂，对整个煤矿来说是最重要的。发出的电为整个煤矿供电。该煤矿也是阳泉市主要的煤矿，是阳泉经济进展的重要动力。阳泉境内煤炭总储量100.77亿吨，以高变质年轻无烟煤及贫煤为主。另外，本市尚有大量风化煤、瓦斯和煤成气资源可供开采利用。发电厂是电力系统的重要组成部分，它直接影响整个电力系统的安全与经济。发电厂的作用是将其他形式的能量转化成电能。按能量转化形式大体分为火力发电厂，水力发电厂，核能发电厂和风力发电场。电气主接线是发电厂电气设计的首要部分，也是构成电力系统的重要环节。主接线的确定对电力系统整体及发电厂、变电所本身的运行的可靠性、灵活性和经济性密切相关。本次设计遵守了发电厂设计法律规范，通过对发电厂电气主接线、厂用电接线、有关短路电流的计算、电气设备选择及校验、继电保护、以及防雷保护的设计，简要完成了4×200MW火力发电厂电气一次部分的设计。将四台发电机全部升压接入220kV 电网，简化了电网结构及电气主接线，省去了升高电压级之间的联络变压器，降低了变压器损耗。关键词：发电厂，电气主接线，继电保护，防雷保护AbstractYangquan power plant as a coal power plant, east is the most important for the whole coal mine. The electricity for the whole coal mine power supply. The mine is also a major coal mine in Yangquan city, is an important motivation of Yangquan economic development. Yangquan coal within the territory of the total reserves of 10.077 billion tons, mainly young high metamorphism anthracite coal and lean coal. In addition, this city has a lot of weathered coal, gas and coal-derived gas resources available for exploitation.Power plants is an important part of power system, it directly affects the whole power system security and economic. Is the role of plants in other forms of energy into electricity. According to the forms of energy conversion can be divided into thermal power plant, hydroelectric power station, nuclear power plants and wind farms. The main electrical wiring is the first part of...