电力系统自动化课程论文-励磁调节器的功能和基本原理.docVIP

新疆农业大学 课 程 论 文 题 目: 励磁调节器的功能和基本原理 课 程: 电力系统自动化 姓 名: 李晓彤 专 业: 电气工程及其自动化 班 级: 104班 学 号: 103736414 指导教师: 石砦 职称: 讲师 2013年11月14日 励磁调节器的功能和基本原理 李晓彤 指导老师：石砦 摘要：励磁调节是为了提高电力系统稳态和动态性能，对同步发电机、同步调相机和大型同步电动机的励磁进行自动调节的一种措施。它对电力系统的作用是在正常运行工况下维持母线电压为给定水平，即起调压作用稳定地分配机组间的无功功率提高电力系统运行的动态性能及输电线路的传输能力。励磁控制中引入镇定器后，可提供合适的阻尼力矩，有力地抑制低频振荡和改善电力系统动态品质。The function and principle of the excitation regulator lixiaotong Abstract: the excitation regulation is in order to improve the steady and dynamic performance of power systems, a measure of automatically adjusting the excitation synchronous generator, synchronous condenser and large synchronous motor. Its role in the power system is in normal operation condition to maintain the bus voltage for a given level, which is the role of regulator, and the stable distribution of wattless power unit, and improve the dynamic performance and transmission capacity of transmission lines in power system operation. And the introduction of stabilizing controller for excitation control, can provide damping moment right, effectively inhibit the dynamic quality of low frequency oscillation and to improve power system. The most basic part of excitation regulation unit is a closed-loop proportional regulator. The excitation regulator has many types, but the core part of the automatic control system is very similar. The basic control by measuring, amplifying, integrated phase-shift trigger unit. Key word: Excitation adjustment; Closed loop proportional governor; Automatic control system 前言：实现自动励磁调节需借助自动励磁调节器。按其调节的原理可分为补偿型和反馈型两类。补偿型调节器是补偿某些引起被调量产生偏差的因素。由于是开环补偿，只能使电压维持在一定水平。反馈型调节器是以被调量与给定值的偏差作为控制信号对系统进行闭环控制。因为是闭环调节，所以调节性能优于补偿型。励磁调节器的发展经历了几个阶