某火力发电厂厂用电系统设计和实现电气工程专业

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1、题 目 某火力发电厂厂用电系统设计 摘 要电力属于我国主要能源产业，只有在电力建设发展完善的情况下，才能提高国民经济，建设公用事业。为了保障了社会经济的进步，促进节约型社会的建设，电力工业需要快速发展，电力要得到有效利用。化石燃料(煤、石油和天然气)被用来发电的方式统称为火力发电。凭借发电方式的不同，火力发电可分为燃煤/油蒸汽轮机发电、燃气-蒸汽联合循环发电和内燃机发电。火力发电是目前电力工业的主要发电形式，而近年来，中国积极倡导“和谐社会与循环经济”的能源发展模式，就是要求在提高火电技术的基础上着重考虑产生电力时对环境的影响以及能源不可再生的问题，在这一政策背景下，中国逐步加大了新能源发电的

2、发展力度，包括风电，光伏发电，核电，潮汐发电，生物秸秆发电等发电模式。与传统火力发电相比，这种新能源发电的最大优势是对环境的污染较小。目前，火力发电厂仍占据着电力市场的大部分份额。根据国家统计局公布的数据显示，中国在2018年的总发电量为67914.2亿千瓦时，其中火力发电占总发电量的73.32%，高达49794.7亿千瓦时。但近年来电力发展跟不上经济发展的脚步，所以必须持续地提高火电技术来满足于社会的发展。本论文是2*300MW的火力发电厂厂用电系统设计，根据设计的要求，从负荷，变压器选择，短路计算，电气设备选择各方面进行研究，在设计过程中需要查阅大量的相关资料，一步步掌握使用数据的能力，使

3、我大学四年所学的内容得到了实际运用。关键词：发电厂；变压器；电力系统；电气设备ABSTRACTElectric power belongs to the main energy industry of our country, only under the condition of perfect development of electric power construction, can we improve the national economy and build public utilities. In order to ensure the progress of society

4、 and economy and promote the construction of economy-saving society, the electric power industry needs to develop rapidly, and the electric power should be used effectively. Fossil fuels (coal, oil and gas) are collectively known as thermal power generation. Thermal power generation can be divided i

5、nto coal-fired / oil-steam turbine, gas-steam combined cycle and internal combustion engine. Thermal power generation is the main form of power generation in the current power industry. In recent years, China has actively advocated "harmony". The energy development model of "social an

6、d circular economy" requires that the environmental impact of generating electricity and the issue of non-renewable energy should be taken into account on the basis of improving thermal power technology. Under this policy background, China has gradually stepped up the development of new energy

7、generation, including wind power, photo voltaic power, nuclear power, tidal power, bio-straw generation and other power generation modes. Compared with the traditional thermal power generation, the biggest advantage of this new energy generation is the less pollution to the environment. At present,

8、thermal power plants still occupy a large share of the electricity market. According to data released by the National Bureau of Statistics, China's total electricity generation in 2018 was 6. 791.42 billion kilowatt-hours, of which thermal power accounted for 73.32 percent of the total electrici

9、ty generation, as high as 4.97947 trillion kilowatt-hours. However, in recent years, the development of electric power can not keep pace with the pace of economic development, so it is necessary to continuously improve the thermal power technology to satisfy the development of society.This paper is

10、the design of 2*300MW thermal power plant, according to the design requirements, from the load, transformer selection, short circuit calculation, electrical equipment selection all aspects of research, in the design process need to consult a large number of relevant information, Step by step grasp t

11、he ability to use the data, so that I learned in the four years of the actual use of the content.Key words: power plant; transformer; power system; electrical equipment目 录第一章 绪论1第二章 厂用电的设计32.1厂用电系统介绍32.2厂用电电压等级确定32.3厂用电接线设计4第三章 厂用电负荷计算及变压器选择53.1厂用电负荷的计算原则53.2厂用负荷的计算方法63.3厂用主变压器选择7第四章 短路电流计算114.1短路电流