某发电厂电气部分设计 毕设论文

黄台发电厂电气部分设计

网络教育学院

本 科 生 毕 业 论 文（设 计）

题 目：

黄台发电厂电气部分设计

I

黄台发电厂电气部分设计

内容摘要

火力发电厂的电气设备可分为电气一次设备和电气二次设备，在火力发电厂电气部分设计中，一次回路的设计是主体，它是保证供电可靠性。经济性和电能质量的关键，并直接影响着电气部分的投资。对发电厂进行电气部分的设计有着很好的实践和指导意义，电气设计包括很多方面，其中，电气主接线是发电厂变电所的主要环节，电气主接线直接影响运行的可靠性、灵活性，它的拟定直接关系着整个变电所电气设备的选择、配电装置的布置、继电保护、自动装置和控制方式的确定，是变电站电气部分投资大小的决定性因素。

本次论文选黄台发电厂作为设计对象，做有关这个发电厂的电气设计。论文从黄台发电厂的现状以及研究意义入手，首先对发电厂电气设计的主要内容进行了总体概括，包括发电厂的总体分析及主变选择、发电厂的总体分析及主变选择、电气主接线的设计和选择、短路计算以及电气设备的选择等；之后又分别详细地介绍了发电厂的总体分析以及主变选择，对主变的容量、台数、以及电缆的选择等进行了计算；通过分析和计算对该发电厂的电气主接线进行了设计和选择；接着又进行了短路计算并介绍了短路计算的相关目以及有关电气设备选择及校验的相关原则和知识；最后全文进行了总结和概括，有一定的实际指导意义。

关键词：电气设计；变电所；电气主接线；电流计算

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黄台发电厂电气部分设计

目 录

内容摘要 ·························································································································· II 目 录 ························································································································ 1 1 绪论 ······························································································································ 3

1.1发电厂的发展现状与趋势 ················································································· 3 1.2黄台发电厂的研究背景 ····················································································· 3 1.3 本次论文的主要工作 ······················································································ 4 2 电气设计的主要内容 ································································································ 5

2.1发电厂的总体分析及主变选择 ········································································· 5

2.1.1 黄台火力发电厂现状 ·············································································· 5 2.1.2 黄台发电厂的主变选择 ·········································································· 5 2.2电气主接线的选择与设计 ················································································· 6 2.3短路电流计算 ····································································································· 6 2.4电气设备选择及校验 ························································································· 6

2.4.1 电气设备选择的一般原则 ······································································ 7 2.4.2 电气设备的选择条件 ·············································································· 7

3 发电厂的总体分析及主变选择 ·············································································· 10

3.1发电厂的总体情况分析 ··················································································· 10 3.2主变压器容量的选择 ······················································································· 10 3.3主变压器台数的选择 ······················································································· 10 3.4电缆选用原则 ··································································································· 11 4 电气主接线设计 ······································································································ 12

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