文档介绍：(华文行楷,小初,
单倍行间距
本科生毕业设计(论文)
题目 10kV配电线路实时动态无功补偿研究
电气与自动化工程学院(系) 自动化专业
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指导教师职称
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摘要
本文分析了无功功率对电力系统的不良影响,说明了无功补偿的必要性和重要意义,以无功补偿技术及装置的发展进程为线索,分析了不同时期无功补偿技术状况及特点,以实例说明了我国10kV配电系统无功补偿的应用情况。从无功补偿的基本理论出发,阐述了无功补偿的基本原理、基本方法,说明了无功补偿的作用,进行了无功补偿的策略分析。
本文介绍了晶闸管的工作特性和参数,研究了晶闸管串联技术, 针对目前晶闸管投切电容器进行无功补偿存在的主要问题,提出了用晶闸管串联开关投切10kV电容器的方案,给出了晶闸管串联开关的静态和动态均压方法,设计出了主电路结构,并对晶闸管参数的选择进行了分析和计算。
对晶闸管触发技术进行了详细的分析和研究,给出峰值电压触发方式的数字电路的设计方案,并通过了仿真实验,阐述了晶闸管触发系统的抗干扰措施。
基于MATLAB仿真软件,本文对电容器投切控制及晶闸管触发装置进行了实验研究,并得出与理论分析一致的结论。
关键词:无功补偿;动态无功补偿装置;晶闸管;触发控制电路; MATLAB仿真
ABSTRACT
This paper analysis the adverse effects of reaction power in the power system, illustrates the necessity of using the method of reaction pensation and its important significance. With the development process of pensation technology and its devices, expounds the stales and characteristics about pensation technology in the different periods. By living example the paper illustrates reaction pensation’s application for lOkV distribution line in our country. Begining with the basic theory of reaction pensation, illustrates the basic principles and pensation methods, and its function.
The paper introduces the working characteristics and parameters of the thyristor, investigate the thyristor’s specialty and technique in series, in allusion to the problem existences in pensation with capacitor at presently ,bring forward the advanced utility technique investigated controlling lOkV capacitor with thyristor switch in series, brought forward the static state and dynamic voltage, designed the main circuit framework which used with reason, analysis and calculates the thyristor’s parameters for its selected .
I study thyristor trigger’s technic, device a digital circuit under max value burst mode plete it’s emulation text. I expatiate the measure of devaluing disturb for thyristor trigger system.
Under the MATLAB power simulation environment,capacitor input-elimination control and thyristor-trigger control wer