200MW凝汽式火力发电厂电气部分设计.docx

200MW凝汽式火力发电厂电气部分设计
摘要
本设计介绍了200MW凝汽式火力发电厂电气部分设计。针对原始资料进行分析，根据火电厂的特点和技术要求确定主变的台数和容量、选择了几种较优的主接线方案进行比较分析，从而得到最终的主接线形式，之后进行短路电流计算，为设计中需要的高压电气设备的选择、整定、校验等方面提供相关的设计依据；然后对主要电气设备选择与校验，最后完成了发电机保护的设计和配电装置设计。在整个设计过程中，以经济、安全、可靠、便于操作为基本原则，并且结合当地气候条件等因素进行设计。
关键词：发电厂；主接线；短路电流；设备选择
The electrical part of the 200MW condensing coal-fired power plant
Abstract
This design introduces the design of the electrical part of the 200MW condensing coal-fired power plant. The original data were analyzed according to the thermal power plant characteristics and technical requirements for determining the number and capacity of main transformer, select the several advantages of the main wiring scheme were analyzed and compared, so as to obtain the final form of the main cable; And then carry out the short-circuit current calculation, for the design of the high voltage electrical equipment, the selection, setting, calibration, etc. And then to the main electrical equipment selection and calibration, finally this paper gives the design of the generator protection and distribution equipment design. In the whole design process, to economic, safe, reliable, easy to operation as the basic principle, and combining with the local climate conditions, factors such as design.
Keywords: power plant;the electrical wiring; short-circuit current; equipment selection
目录
摘要 I
Abstract II
1 前言 1
1
国内外发展现状 2
3
………………………4
本设计要完成的任务 ………………………5
2 电气主接线形式和变压器的选择 ………………………8
………………………8
………………………8
110kV主接线的可选方案 ………………………9
35kV主接线的可选方案 ………………………10
10kV主接线的可选方案 ………………………10
电气主接线方案确定 ………………………10
110kV方案的技术比较 ………………………10
35kV方案的技术比较 ………………………11
10kV方案的技术比较 ………………………12
主接线最终方案确定 ………………………13
本设计主变压器的选择 ………………………13
………………………14
………………………14
3 短路电流计算 ………………………15
………………………16
短路电流的目的和假设 ………………………16
短路电流的计算目的 ………………………1