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三相并联型有源电力滤波器原理控制方法及仿真研究

发布时间:2018-01-19 22:18

  本文关键词: 电能质量 电力滤波器 谐波 电力系统 出处:《曲阜师范大学》2016年硕士论文 论文类型:学位论文


【摘要】:电能是人们生产生活中应用最广泛、最方便、最清洁的能源,影响着国民生活的各个方面。随着社会发展、科技进步,人们精神和物质的需求不断增长,作为提高生活质量不可或缺的重要能源,电能的社会需求量不断增加,愈发使电能在社会能用能源中占据着举足轻重的地位,因此电能的质量好坏对社会生产生活有着空前重大的影响。但随着大量半导体器件以及非线性负载的应用产生大量畸波,致使电网受到污染,电能质量遭到破坏,给人们的生产生活带来许多不便甚至造成重大损失。因此,对电能质量的优化、改革、治理需要加快进程。电力系统中衡量电能质量好坏的一项重要指标是电压波形。谐波是造成电压波形失真的主要因素。为了保证能维持较高标准的电能质量,全世界范围内许多国家、机构制定要求和标准用以限制电网谐波,维护电网电能质量。如何有效解决电能质量降低,提高电能质量的专题研究,是社会发展的需要。全世界范围内的学术界和工程界大批研究人员一直在努力。一般处理谐波污染有两种途径:一是对产生谐波污染的器件、设备进行升级改进,达到减少甚至消除谐波的目的。这一方向从产生谐波的源头上着手,能有效减少甚至消除谐波,但面对庞大的电力系统而言,这个方向几乎无法实现。二是对电网进行精确的畸波补偿,达到抑制畸波、补偿无功功率、提高电能质量的目的。这一研究方向,无源电力滤波器和有源电力滤波器是重要研究成果,已经投入使用并成为治理谐波污染的重要手段。尤其是有源电力滤波器是公认的最好的处理手段,其高效、稳定、灵活的优点奠定了在优化电网中的地位及其应用前景。本文在提出谐波问题后,给出了解决问题的方法,就是本文的研究课题 有源电力滤波器。研究了它的研究现状、系统结构、基本工作原理、控制方法及其发展趋势,并选择了基于有功功率平衡原理的三相并联型有源电力滤波器进行深入研究,期望能在实时性、准确性方面、造价等方面有所进步,最后利用Matlab进行了仿真实验,分析结果证明了该理论的优越性,同时找到了研究的不足并提出了可能的改进意见。
[Abstract]:Electric energy is the most widely used, the most convenient, the cleanest energy in people's production and life, which affects all aspects of national life. With the development of society, scientific and technological progress, people's spiritual and material needs continue to grow. As an indispensable and important energy to improve the quality of life, the social demand for electric energy is increasing, which makes electric energy play an important role in the social energy. Therefore, the quality of electrical energy has an unprecedented impact on social production and life. However, with a large number of semiconductor devices and the application of nonlinear loads a large number of teratological waves, resulting in power grid pollution. The power quality has been destroyed, which brings a lot of inconvenience and even great loss to people's production and life. Therefore, the optimization of power quality is reformed. Voltage waveform is an important index to measure power quality in power system. Harmonic is the main factor that causes voltage waveform distortion. In order to ensure the high standard power quality can be maintained. In many countries all over the world, institutions have formulated requirements and standards to limit power harmonics and maintain power quality. How to effectively solve the problem of reducing power quality and improving power quality is a special topic. It is the need of social development. A large number of researchers in academic and engineering circles all over the world have been working hard. Generally there are two ways to deal with harmonic pollution: one is to produce harmonic pollution devices. Equipment upgrading and improvement to reduce or even eliminate the purpose of harmonic. This direction from the source of harmonic generation can effectively reduce or eliminate harmonics, but in the face of a large power system. This direction is almost impossible to achieve. The second is to accurately compensate the power grid to achieve the purpose of suppressing the abnormal wave, compensating reactive power and improving the power quality. Passive power filter and active power filter are important research achievements, which have been used and become an important means to control harmonic pollution, especially the active power filter is recognized as the best means of processing, its efficiency. The advantages of stability and flexibility have laid a solid foundation for the status and application prospects in the optimization of the power network. After putting forward the harmonic problem, the paper gives the method to solve the problem. It is the research topic of this paper, active power filter. The research status, system structure, basic working principle, control method and its development trend are studied. And the three-phase shunt active power filter based on the principle of active power balance is selected for in-depth study, hoping to make progress in real-time, accuracy, cost and so on. Finally, the simulation experiment is carried out by using Matlab, and the analysis results prove the superiority of the theory, and find out the deficiency of the research and put forward the possible improvement suggestion at the same time.
【学位授予单位】:曲阜师范大学
【学位级别】:硕士
【学位授予年份】:2016
【分类号】:TM761

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1 陈警众;电能质量讲座 第四讲 电能质量改善措施的实际应用[J];供用电;2001年01期

2 ;教育部电能质量工程研究中心[J];安徽科技;2002年03期

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