峨眉地区电网规划及新建清山发电厂电气部分设计1.doc

摘要 电气主接线是发电厂、变电所电气设计的首要部分，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。并且对电气设备选择、配电装置配置、继电保护和控制方式的拟定有较大的影响。电能的使用已经渗透到社会、经济、生活的各个领域，而在我国电源结构中火电设备容量占总装机容量的75%。 本文是对峨眉山地区电网规划及发电厂电气部分设计，主要完成了电气主接线的设计。具体过程和步骤:根据通过原始资料分析和方案比较，确定发电厂的电气主接线方案和发电厂主变压器台数、容量和型号,然后进行短路电流的计算,并对隔离开关，母线，电压互感器，电流互感器进行稳定性校验，最后作了发电机、变压器和母线的继电保护。 本论文包括地区电网接线方案的潮流计算、比较、选择；发电厂主变压器容量计算、台数和型号的选择；短路电流计算；主要电气设备的选择与校验；继电保护配置；英文资料翻译。 关键字：电气主接线；短路电流计算；设备选择；继电保护配置 Abstract Electrical wiring is the main power plant, electrical substation design important part, constitutes an important part of the power system. Connection to determine the overall power system and power plant, substation s reliability, flexibility and economy are closely related. And the electrical equipment selection, distribution device configuration, the way of protection and control of the protocol has a great influence. The use of electricity has been infiltrated into the social, economic, in all areas of life, while in China the power structure in thermal power plant capacity accounted for75% of total installed capacity. This article is on the Mount Emei area power network planning and the electrical part of power plant design, mainly to complete the main electrical wiring design. The specific process and steps: according to the original data analysis and scheme comparison, determine the power plant electrical main wiring scheme and main power transformer number, capacity and model, then the calculation of short-circuit current, and the isolation switch, generator, voltage transformer, current transformer for verification of stability, finally made a generator, transformer and the bus bar protection. This thesis includes regional power grid connection scheme flow calculation, comparison, selection of main power transformer; capacity calculation, number and type choice; short-circuit current calculation; the main electrical equipment selection and calibration; relay protection; English translation. Keywords: the main electr