330MW同步发电机励磁控制系统设计及性能分析.doc

PAGE 摘 要 励磁系统是同步发电机的重要组成部分。优良的励磁系统不仅可以保证发电机运行的可靠性和稳定性，而且可以有效的提高发电机及其相联的电力系统的技术经济指标。本次设计以330MW同步发电机为例，对其励磁系统进行设计和性能分析。 本次设计采用自并励励磁系统，用三相全控整流桥整流，根据励磁控制系统的基本要求、任务，对主回路和控制回路进行计算、设计和选择。 性能分析部分主要对所设计的励磁系统的静态特性、动态特性和强励倍数进行简单的分析和讨论。 关键词：励磁 自并励 自动 性能 Abstract Excitation system is an important part of Synchronous generator. Excellent generator excitation system can not only ensure the reliability and stability, but also can effectively improve the generator and its associated power system technical and economic indicators. Lets take the metal removal rate for example. Excitation system design and performance is analyzed. The design uses a self-shunt excitation system, three-phase full-controlled rectifier bridge rectifier excitation control system .According to the basic requirements of the task, the main circuit and control circuit is carried out calculation, design and selection. The part of performance analysis analyzes the static characteristics and dynamic characteristics and strong excitation multiples. Keywords: Excitation Self-shunt Automatic Performance 目录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc358921319 引 言 PAGEREF _Toc358921319 \h 1 HYPERLINK \l _Toc358921320 第一章 方案的选择 PAGEREF _Toc358921320 \h 2 HYPERLINK \l _Toc358921321 1.1 概述 PAGEREF _Toc358921321 \h 2 HYPERLINK \l _Toc358921322 1.2 方案论证及选择 PAGEREF _Toc358921322 \h 2 HYPERLINK \l _Toc358921323 第二章 励磁系统主回路的设计 PAGEREF _Toc358921323 \h 5 HYPERLINK \l _Toc358921324 2.1 励磁变压器的设计 PAGEREF _Toc358921324 \h 5 HYPERLINK \l _Toc358921325 2.2 整流回路的原理浅析及整流元件参数的计算 PAGEREF _Toc358921325 \h 7 HYPERLINK \l _Toc358921326 2.2.1 整流回路的原理浅析 PAGEREF _Toc358921326 \h 7 HYPERLINK \l _Toc358921327 2.2.2 整流元件参数的计算 PAGEREF _Toc358921327 \h 8 HYPERLINK \l _Toc358921328 2.3 半导体励磁系统的保护 PAGEREF _Toc358921328 \h 9 HYPERLINK \l _Toc358921329 2.3.1 过电压保护 PAGEREF _Toc358921329 \h 9 HYPERLINK \l _Toc358921330 2.3.2 过电流保护 PAGEREF _To