并联型混合电力滤波器与SVC无功谐波综合补偿系统的研究

发布时间：2018-06-13 21:56

本文选题：有源电力滤波器 + 静止无功补偿　；参考：《合肥工业大学》2015年硕士论文

【摘要】：随着科学技术的发展,应用在电力系统中的负荷也发生了巨大的变化,同时也带来了严重的电能质量问题。因此,改善电能质量,已经成为当代电力领域需要解决的问题之一,而谐波的治理和无功功率的补偿已被看作提高电能质量的主要目标。有源电力滤波器(APF)和静止无功补偿器(SVC)可以作为谐波治理和无功功率补偿的典型代表,具有不可替代的特点。两者的结合既能抑制谐波又能提高功率因数,既弥补了相互的缺点,又降低了成本,有效的提高电能质量。本文首先对谐波治理以及无功综合补偿方面的研究现状和背景做了简要的阐述。其次,详细的论述了电力滤波器分类、工作原理,通过分析3相3线并联型APF,研究了有源电力滤波器的谐波检测方法和控制方法、参数选择等,对设计主电路参数方法进行了研究,对APF的常用谐波检测和控制方法进行重点阐述。APF的电流控制方法种类繁多,文中重点描述了空间矢量脉宽调制(SVPWM)技术,运用SVPWM控制方案做为电流环控制环节中的跟踪指令电流信号。然后介绍了静止无功补偿器(SVC)的工作原理、连接方式和控制方式。最后,对APF和SVC分别搭建了仿真图,并对检测方法和控制方法搭建仿真模型图,经过仿真验证,p-q检测法及ip-iq检测法都能够进行有效的检测,但ip-iq检测法的精度更高,后者也是本论文采用的检测方法。论文对SVPWM电流跟踪控制和开环SVC进行了建模与仿真分析,同时仿真讨论了低通滤波器的截止频率对电流检测精度的影响。以MATLAB/SIMULINK的仿真载体为基础,进行综合仿真模型搭建,对综合系统响应非线性负载进行仿真分析。仿真结果表明,电力系统方面的无功功率、谐波电流跟踪补偿可经由并联混合滤波器、SVC得以迅速实现,此种谐波无功补偿方案高效且稳定,不仅能够动态的抑制系统谐波,而且系统的功率因数也得到提高。
[Abstract]:With the development of science and technology, great changes have taken place in the load applied in power system, and at the same time, serious power quality problems have been brought. Therefore, the improvement of power quality has become one of the problems that need to be solved in the field of modern power, and the harmonic treatment and reactive power compensation have been regarded as the main goal of improving power quality. Active Power filter (APF) and static Var compensator (SVC) can be used as typical representatives of harmonic control and reactive power compensation. The combination of the two can not only suppress harmonics but also improve the power factor, make up for the shortcomings of each other, reduce the cost, and improve the power quality effectively. First of all, the research status and background of harmonic control and reactive power compensation are briefly described in this paper. Secondly, the classification and working principle of power filter are discussed in detail. By analyzing 3-phase 3-line parallel APF, the harmonic detection method and control method of active power filter, parameter selection and so on are studied. The main circuit parameter design method is studied, and the common harmonic detection and control methods of APF are discussed in detail. There are many kinds of current control methods in APF. The space vector pulse width modulation (SVPWM) technology is described in this paper. SVPWM control scheme is used as the tracking command current signal in the current loop control link. Then the working principle, connection mode and control mode of static Var compensator (SVC) are introduced. Finally, the simulation diagram is built for APF and SVC, and the simulation model diagram for detection method and control method is built. It is verified by simulation that both p-q detection method and ip-iq detection method can effectively detect, but the accuracy of ip-iq detection method is higher. The latter method is also used in this paper. In this paper, SVPWM current tracking control and open-loop SVC are modeled and simulated. At the same time, the influence of cutoff frequency of low-pass filter on current detection accuracy is discussed. Based on the simulation carrier of MATLAB / Simulink, the synthetic simulation model is built, and the nonlinear load response of the integrated system is simulated and analyzed. The simulation results show that the reactive power and harmonic current tracking compensation in power system can be quickly realized by parallel hybrid filter SVC. This harmonic reactive power compensation scheme is efficient and stable, and can not only dynamically suppress the system harmonic. And the power factor of the system is also improved.
【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TM761;TN713.8

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