机械厂35KV总降压变电所及高压配电系统设计1.docVIP

课程名称： 专业课程设计 项目名称： 机械厂35KV总降压变电所 及高压配电系统设计 院（系、部）： 信息工程学院 姓 名： 张三 学 号： 年 级： 071 专 业： 电气工程及其自动化 任课教师： 李四 2010 年1月19日·北京 摘 要 本设计完成一个机械厂的供配电系统的设计。主要内容包括以下几个方面：首先按照需要系数法进行全厂负荷计算，并经过技术比较对企业的供电方案进行论证与选择，确定最优供电方案；然后开始企业总降压变电所的设计，在比较了多个主接线方案后确定一个最适合本企业情况的主接线方案，并绘制电气主结线图和电气总平面布置图等,最后完成保护。 本次设计的变电所与旧式变电所有所不同，在设备选择上采用了一些新型设备，充分保证了工厂生产工艺所需的供电可靠性和电能质量。另外，设计中在以供电可靠性为基础的前提下力求节约，使企业供配电系统的投资少、运行费用低，并且尽力降低了有色金属消耗量，使设计既能满足当前需要，又留有一定的发展空间。 关键词：变电所，需要系数法,电气主接线,负荷,短路 Abstract It designs about the distribution system of a machine company. The major content of this design includes following several aspects: Firstly, the whole enterprise s load counting is carried on according to the needs coefficient laws, and as a result of the technology fairly, the power supply scheme to the enterprise is demonstrated and is selected, define the most excellent power supply scheme; Then start design of total decompression transformer substation of enterprise, compares many main wiring schemes after a definite main wiring scheme that is fit for this enterprise circumstances most , drawing electric owner total plane of knot chart and electric fixes up the picture etc ;Finally accomplish the design of electricity protection and lightening protection. The transformer substation of this design is different to some extent with the old type transformer substation, and has used some new equipments in the equipment selection, and has fully pledged power supply reliability and electric energy quality that factory production technology needed. Moreover in the design making every effort to practise thrift under the premise that takes the power supply reliability as the foundation, the investment that makes the enterprise supply the distributed system is seldom and the operating cost is low, and does all one can to reduced nonferrous metal consumption capacity, and makes the design can satisfy the present time needs, and stays the fixed development space. Key word: transf