摘要电力行业正在不断发展，人们对被供给电力的要求越来越高，尤其是对所供电的稳 定性、可靠性和持续性。然而电网的这些特性往往取决于发电厂和地区电网的合理设计 和配置，要求电气设备能够可靠地运行和被灵活地操作，且经济合理、便于扩建。80402

本文是对临东地区电网规划及新建的丰源火力发电厂电气部分设计，主要完成了该 地区电网接线方式和主要电气设备的选择。首先，通过对原始资料的分析，确定发电厂 中发电机的型号和参数、其电气主接线方案、其主变压器台数、型号和参数。然后，通 过经济技术比较择优确定地区电网接线方式，再计算短路电流，选择隔离开关、电流互 感器等设备并对其进行稳定性校验。最后规划设计发电机、变压器和母线的继电保护装 置。

毕业论文关键词 地区电网 发电厂电气部分 短路电流计算 设备选型

毕 业 设 计 说 明 书 外 文 摘 要

Title Design of Area Electrical Network and Electrical   Part of Power Plant

Abstract With the development of electric power industry,people have higher and higher demand on the stability,reliability and continuity of power supply。These factors usually depend on reasonable design and configuration of power plants and regional network。Reliability of operation,flexible operation,reasonable economic and convenient extension are required。

This paper is about the Lin Dong area electrical network planning and the electrical part of newly-built Feng Yuan thermal power plant design,which mainly complete the choice of connection and main electrical equipment。Firstly,choose the type and quantity of generator and transformer,at the same time select schemes for main electrical connection by analyzing the raw data。Secondly,determine schemes for regional power grid connection through economical and technical comparison。Thirdly, calculate the short-circuit current,choose disconnecting switch,current transformer and check their stability。Finally,design relay protection for generators,transformers and buses。

Keywords area electrical network electrical part of power plant short-circuit current calculation choice of electrical equipment

本科毕业设计说明书 第 I 页

目 次

1 绪论 1

1。1 课题背景 1

1。2 国内外研究现状 1

1。3 课题的主要研究工作 1

1。4 章节安排 3

2 确定发电厂发电机的型号、参数和发电厂的电气主接线 4

2。1 确定发电厂发电机的型号、参数 4

2。2 丰源火电厂电气主接线的确定