无谐波检测的并联混合型有源电力滤波器研究
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摘要
电网的非线性负载、感性负载等向公用电网注入大量谐波和无功功率,给公用电网的质量造成严重污染,既影响电力系统自身的正常运行,又对周围的通信系统和电子设备产生严重的干扰,因此消除谐波具有现实的实际意义。
本文研究了并联型有源电力滤波器和无源滤波器并联的混合型电力滤波器。在论述混合型电力滤波器结构形式及发展现状基础上,首先分析了有源电力滤波器的工作原理,建立了并联混合型电力滤波器的数学模型和电路模型,对有源电力滤波器交、直流侧能量的传递进行了分析。
在上述分析基础上,开展了基于电网电流控制的无谐波检测控制方式研究,通过d-q变换实现系统控制,同时分析了该控制方式与传统控制方式的等效性及其优点。开展了数字锁相技术,建立了三相锁相环的数学模型,并采用Matlab进行了仿真。设计了无源滤波器,并对只有无源滤波器、混合型电力滤波器进行了对比仿真研究。
为了验证该控制方案的有效性,搭建了有源电力滤波器实验系统。系统包括三相逆变主电路、以DSP TMS320LF2407A为核心的控制电路、驱动电路、检测电路等几部分。进行了软件编程与调试,完成了锁相实验、三相逆变器并网实验、有源滤波器谐波补偿实验。
仿真和实验研究结果表明,本文研究的无谐波检测的并联型有源电力滤波器能够起到补偿电流谐波的作用。
Non-linear load, inductive load of the utility grid inject substantial harmonic and reactive power to grid, causing serious pollution to the quality of grid, not only affecting power system normal operation, but also having serious interference on surrounding communication systems and electronic devices. Thus the elimination of harmonics has real practical significance.
This paper studies the hybrid power filter which is composed of shunt Active Power Filter and Passive Filter in parallel. After discussing the structure and development of hybrid power filter, it analyses the working principle of Active Power Filter. The paper sets up a Shunt Hybrid Power Filter mathematical model and circuit model. Also the analysis of process during the transmission between AC-side and DC-side in Active Power Filter is done.
Based on the above analysis, the paper studies the control mode without harmonic detection based on the grid current, which realizes the control through dq transformation. Analysis of the equivalence of new control scheme and traditional ones is done. Afterwards Phase Lock Loop is studied Its math model is established and simulation has been completed by Matlab. Passive Filter is designed. The systems with passive filter and with hybrid power filter are compared by simulation studies.
In order to verify the effectiveness of proposed control scheme, an experimental system is set up. The system includes three-phase inverter, control circuit which uses DSP TMS320LF2407A as the core, drive circuit, and so on. Software programming and debugging is completed, as well as the Phase Lock Loop experiment, connecting to grid experiment and compensation experiment.
Simulation and experimental results show that the proposed Shunt Active Power Filter without harmonic detection can compensate harmonic current.
本文研究了并联型有源电力滤波器和无源滤波器并联的混合型电力滤波器。在论述混合型电力滤波器结构形式及发展现状基础上,首先分析了有源电力滤波器的工作原理,建立了并联混合型电力滤波器的数学模型和电路模型,对有源电力滤波器交、直流侧能量的传递进行了分析。
在上述分析基础上,开展了基于电网电流控制的无谐波检测控制方式研究,通过d-q变换实现系统控制,同时分析了该控制方式与传统控制方式的等效性及其优点。开展了数字锁相技术,建立了三相锁相环的数学模型,并采用Matlab进行了仿真。设计了无源滤波器,并对只有无源滤波器、混合型电力滤波器进行了对比仿真研究。
为了验证该控制方案的有效性,搭建了有源电力滤波器实验系统。系统包括三相逆变主电路、以DSP TMS320LF2407A为核心的控制电路、驱动电路、检测电路等几部分。进行了软件编程与调试,完成了锁相实验、三相逆变器并网实验、有源滤波器谐波补偿实验。
仿真和实验研究结果表明,本文研究的无谐波检测的并联型有源电力滤波器能够起到补偿电流谐波的作用。
Non-linear load, inductive load of the utility grid inject substantial harmonic and reactive power to grid, causing serious pollution to the quality of grid, not only affecting power system normal operation, but also having serious interference on surrounding communication systems and electronic devices. Thus the elimination of harmonics has real practical significance.
This paper studies the hybrid power filter which is composed of shunt Active Power Filter and Passive Filter in parallel. After discussing the structure and development of hybrid power filter, it analyses the working principle of Active Power Filter. The paper sets up a Shunt Hybrid Power Filter mathematical model and circuit model. Also the analysis of process during the transmission between AC-side and DC-side in Active Power Filter is done.
Based on the above analysis, the paper studies the control mode without harmonic detection based on the grid current, which realizes the control through dq transformation. Analysis of the equivalence of new control scheme and traditional ones is done. Afterwards Phase Lock Loop is studied Its math model is established and simulation has been completed by Matlab. Passive Filter is designed. The systems with passive filter and with hybrid power filter are compared by simulation studies.
In order to verify the effectiveness of proposed control scheme, an experimental system is set up. The system includes three-phase inverter, control circuit which uses DSP TMS320LF2407A as the core, drive circuit, and so on. Software programming and debugging is completed, as well as the Phase Lock Loop experiment, connecting to grid experiment and compensation experiment.
Simulation and experimental results show that the proposed Shunt Active Power Filter without harmonic detection can compensate harmonic current.
引文
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2郭汉桥,罗乾超,褚丽丽.电力系统中谐波的产生、危害及综合治理.电气开关,2008,(2):55~57
3 R.D. Henderson and P.J. Rose. Harmonics: The effects on power quality and transformers. IEEE Trans. Industrial Applications. 1994,528-532
4罗德凌,周方圆,唐朝晖.有源电力滤波器的研究现状与发展动向.国外电子测量技术, 2006, 25(2):1~5
5王兆安,杨君,刘进军.谐波抑制和无功功率补偿(第2版).北京:机械工业出版社, 2006
6王军华,李建贵,汪友华.混合型有源电力滤波器研究现状与发展趋势.电气传动, 2007,37(12):3~6
7王金全,杨守城,郭铁英等.供电系统的无功补偿与谐波抑制.解放军理工大学学报(自然科学版). 2001, 2(6):58~62
8谢鹏,丛义宏,姜圣文.浅谈电力用户的谐波源及治理措施.内蒙古石油化工, 2008,(16):63~64
9周刚,王斌.电能质量相关问题的分析与总结.电网技术. 2007,31:20~24
10电能质量公用电网谐波. GBT 14549-1993. http://www.china001.com/show_hdr.php? xname=PPDDMV0&dname=CR5JH41&xpos=159
11刘建戈,李晓凤.低压无源滤波器的设计和应用.电气应用, 2006,25(11):67~70
12席光华.无源滤波器参数计算.电力电容器, 2006, (6):34~37
13彭协华,张代润,朱代祥.无源滤波器设计新方法.电力电子技术, 2004, 38(4):29~31
14袁川,阮广,贾玲.无源滤波器设计及其在谐波治理中的应用.四川电力技术, 2005,(1):34~36
15王伟,周林,徐明.有源电力滤波器控制方法综述.继电器. 2006, 34(20):81~86
16胥良,邓孝祥.有源电力滤波器.煤矿机械, 2001, (4):32~33
17李凤祥,赵不贿.谐波抑制和无功功率补偿技术的研究与应用.电力系统及其自动化学报,2001,13(5):26-72
18 Y Hayashi, N Sato, K Takahashi. A Novel Control of A Current-Source Active Filter for AC Power System Harmonic Compensation. IEEE Trans. on Ind. Appl.,1991, 27(2):380-385
19颜晓庆,王兆安.并联型电力有源滤波器控制方式对动态特性影响的研究.西安交通大学学报,1998,32(6):26-30
20 Akagi H. New Trends in Active Filters for Power Conditioning. IEEE Trans. Ind. App1.,1996,32(6):1312-1322
21张代润,宋婷婷,陈洲等.有源电力滤波器实验研究.电力系统及其自动化学报. 2005, 17(3):28~34
22王军华,李建贵,汪友华.混合型有源电力滤波器研究现状与发展趋势.电气传动, 2007,37(12):3~6
23吴竞昌,孙树勤,宋文南等.电力系统谐波.北京:水利电力出版社,1988
24夏道止,沈赞埙.高压直流输电系统的谐波分析及滤波.北京:水利电力出版社,1994
25刘斌,曾国宏.三相四线制有源电力滤波器无差拍控制策略研究.电力电容器, 2007,4:22~25
26周林,孟婧,徐会亮等.并联有源电力滤波器三角载波与滞环比较控制策略比较与仿真.中国电力, 2008,41(4):25~29
27徐明,彭剑,周林.三角波脉宽调制电流控制有源电力滤波器电路参数与跟随性能的关系.电力自动化设备. 2008,28(9):60~63
28戴文进,黄太阳.神经网络控制的三相并联有源电力滤波器设计.高电压技术, 2007.33(11):138~142
29周卫平,吴正国,夏立等.基于DSP和滑模变结构控制的三相三线有源电力滤波器.电机与控制学报,2006,10(2):130-133
30方红兴.基于DSP控制的并联有源电力滤波器的研究:[浙江大学硕士学位论文].2001
31 Kern, Gregory A. Sunsine300 Utility Interactive AC Module Anti-islanding Test Results. Proceedings of the 26th IEEE Photovoltaic Specialists Conference, Anaheim,Calif. 1997:1265~1268
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