等效无限长有源电力滤波器在环形配电网中的应用
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摘要
随着高科技园区等用户对供电可靠性要求的提高,环形配电网成为一种发展趋势。与射线型配电网相似,由功率因数校正电容和系统自身电感导致的谐波谐振现象,使得环形配电网中的谐波污染问题成为人们关注的焦点之一。该文针对环形配电网中谐波谐振现象,基于将环形配电网等效为射线型配电网的基本思想,提出一种在环形配电网中点安装等效无限长有源电力滤波器(infinite active power filter,I-APF)的谐波抑制方案。相比于在环形配电网中点安装阻性有源电力滤波器(resistive active power filter,R-APF)的传统方案,该方案不仅能够获得更好的谐波抑制效果;同时,该方案对于安装位置的改变、电容的改变和非线性负载的改变,均具有更好的适应性和谐波抑制效果。仿真分析和实验结果均验证了该方案的正确性和有效性。
With the increasing demand for electric-power reliability in high-tech parks or in metropolitan areas, the closed-loop distribution power system has become a trend. The harmonic resonance caused by capacitors for power factor correction and system inductors may lead to significant voltage distortion along the feeder. This paper proposes an infinite active power filter(I-APF) to damp out the harmonic resonance. The I-APF is installed at the middle point of the closed-loop distribution feeder, which is equivalent to a radial feeder. Compared with the traditional resistive active power filter(R-APF), the proposed strategy has better capability of harmonic damping, especially in response to variation of non-linear loads or resonant capacitors. The proposed strategy can also accomplish harmonic suppression effectively, even if the installation location of I-APF deviates from the middle point. Both simulation and experiment results have been provided to validate the proposed strategy.
With the increasing demand for electric-power reliability in high-tech parks or in metropolitan areas, the closed-loop distribution power system has become a trend. The harmonic resonance caused by capacitors for power factor correction and system inductors may lead to significant voltage distortion along the feeder. This paper proposes an infinite active power filter(I-APF) to damp out the harmonic resonance. The I-APF is installed at the middle point of the closed-loop distribution feeder, which is equivalent to a radial feeder. Compared with the traditional resistive active power filter(R-APF), the proposed strategy has better capability of harmonic damping, especially in response to variation of non-linear loads or resonant capacitors. The proposed strategy can also accomplish harmonic suppression effectively, even if the installation location of I-APF deviates from the middle point. Both simulation and experiment results have been provided to validate the proposed strategy.
引文
[1]Currence E J,Plizga J E,Nelson H N.Harmonic resonance at a medium-sized industrial plant[J].Industry Applications,IEEE Transactions on,1995,31(4):682-690.
[2]Akagi H.Control strategy and site selection of a shunt active filter for damping of harmonic propagation in power distribution systems[J].Power Delivery,IEEE Transactions on,1997,12(1):354-363.
[3]Akagi H,Fujita H,Wada K.A shunt active filter based on voltage detection for harmonic termination of a radial power distribution line[J].Industry Applications,IEEE Transactions on,1999,35(3):638-645.
[4]Wada K,Fujita H,Akagi H.Considerations of a shunt active filter based on voltage detection for installation on a long distribution feeder[J].Industry Applications,IEEE Transactions on,2002,38(4):1123-1130.
[5]帅智康,罗安,祝文姬,等.并联型有源电力滤波器容量和最优安装位置的选择方法[J].中国电机工程学报,2009,29(13):92-98.Shuai Zhikang,Luo An,Zhu Wenji,et al.Sthdy on the size and optimal location of shunt active power filter[J].Proceedings of the CSEE,2009,29(13):92-98(in Chinese).
[6]陈国柱,吕征宇.有源电力滤波器的一般原理及应用[J].中国电机工程学报,2000,20(9):17-21.Chen Guozhu,LüZhengyu.The general principle of active filter and its application[J].Proceedings of the CSEE,2000,20(9):17-21(in Chinese).
[7]Jintakosonwit P,Fujita H,Akagi H.Control and performance of a full-digital-controlled shunt active filter for installation on a power distribution system[J].IEEE Transactions Power Electron,2002,17(1):132-140.
[8]Jintakosonwit P,Akagi H,Fujita H,et al.Implementation and performance of automatic gain adjustment in a shunt-active filter for harmonic damping throughout a power distribution system[J].Power Electronics,IEEE Transactions on,2002,17(3):438-447.
[9]Jintakosonwit P,Fujita H,Akagi H,et al.Implementation and performance of cooperative control of shunt active filters for harmonic damping throughout a power distribution system[J].Industry Applications,IEEE Transactions on,2003,39(2):556-564.
[10]Lee T L,Cheng P T,Akagi H,et al.A dynamic tuning method for distributed active filter systems[J].Industry Applications,IEEE Transactions on,2008,44(2):612-623.
[11]Cheng P T,Lee T L.Distributed active filter systems(DAFSs):a new approach to power system harmonics[J].Industry Applications,IEEE Transactions on,2006,42(5):1301-1309.
[12]Lee T L,Li J C,Cheng P T.Discrete frequency tuning active filter for power system harmonics[J].Power Electronics,IEEE Transactions on,2009,24(5):1209-1217.
[13]Sun X,Zeng J,Chen Z.Site selection strategy of single-frequency tuned R-APF for background harmonic voltage damping in power systems[J].Power Electronics,IEEE Transactions on,2013,28(1):135-143.
[14]孙孝峰,曾健,张芳,等.阻性有源滤波器分频控制位置的选择方案[J].中国电机工程学报,2011,31(28):65-70.Sun Xiaofeng,Zeng Jian,Zhang Fang,et al.Site selection strategy of discrete frequency resistive active power filter[J].Proceedings of the CSEE,2011,31(28):65-70(in Chinese).
[15]范瑞祥,罗安,涂春鸣.并联混合型有源滤波器的分频控制方法研究[J].中国电机工程学报,2007,27(25):108-113.Fan Ruixiang,Luo An,Tu Chunming.The frequency dividing control research based on shunt hybrid active power filter[J].Proceedings of the CSEE,2007,27(25):108-113(in Chinese).
[16]吴振辉,彭晓涛,沈阳武,等.一种配电网环形供电模型及其合环运行方式的研究[J].中国电机工程学报,2013,33(10):57-63.Wu Zhenhui,Peng Xiaotao,Shen Yangwu,et al.Study on a loop power supply model and its loop-close operation mode for distribution network[J].Proceedings of the CSEE,2013,33(10):57-63(in Chinese).
[17]Huang W T,Chen T H,Pu G C,et al.Assessment of upgrading existing primary feeders from radial to normally closed loop arrangement[C]//Transmission and Distribution Conference and Exhibition 2202.Asia Pacific:IEEE,2002:2123-2128.
[18]Chen T H,Hung W T,Gu J C,et al.Feasibility study of upgrading primary feeders from radial and open-loop to normally closed-loop arrangement[J].Power Systems,IEEE Transactions on,2004,19(3):1308-1316.
[19]Lee T L,Cheng P T.A harmonic damping method for a loop power system[C]//Industry Applications Society Annual Meeting.Edmonton,Alta:IEEE,2008:1-8.
[20]Lee T L,Hu Shanghun.Discrete frequency-tuning active filter to suppress harmonic resonances of closed-loop distribution power systems[J].Power Electronics,IEEE Transactions on,2001,26(1):137-148.
[21]Cheng P T,Lee T L.Analysis of harmonic damping effect of the distributed active filter system[J].Industry Applications,IEEE Transactions on,2006,126(5):605-614.
[22]Sun Xiaofeng,Li Zhichao,Lu Gong.A novel control strategy of active filter for suppressing background harmonic voltage magnification in power distribution system[C]//Power Electronics and Motion Control Conference(IPEMC),2012 7th International.Harbin,China:IEEE,2012:2779-2783.
[2]Akagi H.Control strategy and site selection of a shunt active filter for damping of harmonic propagation in power distribution systems[J].Power Delivery,IEEE Transactions on,1997,12(1):354-363.
[3]Akagi H,Fujita H,Wada K.A shunt active filter based on voltage detection for harmonic termination of a radial power distribution line[J].Industry Applications,IEEE Transactions on,1999,35(3):638-645.
[4]Wada K,Fujita H,Akagi H.Considerations of a shunt active filter based on voltage detection for installation on a long distribution feeder[J].Industry Applications,IEEE Transactions on,2002,38(4):1123-1130.
[5]帅智康,罗安,祝文姬,等.并联型有源电力滤波器容量和最优安装位置的选择方法[J].中国电机工程学报,2009,29(13):92-98.Shuai Zhikang,Luo An,Zhu Wenji,et al.Sthdy on the size and optimal location of shunt active power filter[J].Proceedings of the CSEE,2009,29(13):92-98(in Chinese).
[6]陈国柱,吕征宇.有源电力滤波器的一般原理及应用[J].中国电机工程学报,2000,20(9):17-21.Chen Guozhu,LüZhengyu.The general principle of active filter and its application[J].Proceedings of the CSEE,2000,20(9):17-21(in Chinese).
[7]Jintakosonwit P,Fujita H,Akagi H.Control and performance of a full-digital-controlled shunt active filter for installation on a power distribution system[J].IEEE Transactions Power Electron,2002,17(1):132-140.
[8]Jintakosonwit P,Akagi H,Fujita H,et al.Implementation and performance of automatic gain adjustment in a shunt-active filter for harmonic damping throughout a power distribution system[J].Power Electronics,IEEE Transactions on,2002,17(3):438-447.
[9]Jintakosonwit P,Fujita H,Akagi H,et al.Implementation and performance of cooperative control of shunt active filters for harmonic damping throughout a power distribution system[J].Industry Applications,IEEE Transactions on,2003,39(2):556-564.
[10]Lee T L,Cheng P T,Akagi H,et al.A dynamic tuning method for distributed active filter systems[J].Industry Applications,IEEE Transactions on,2008,44(2):612-623.
[11]Cheng P T,Lee T L.Distributed active filter systems(DAFSs):a new approach to power system harmonics[J].Industry Applications,IEEE Transactions on,2006,42(5):1301-1309.
[12]Lee T L,Li J C,Cheng P T.Discrete frequency tuning active filter for power system harmonics[J].Power Electronics,IEEE Transactions on,2009,24(5):1209-1217.
[13]Sun X,Zeng J,Chen Z.Site selection strategy of single-frequency tuned R-APF for background harmonic voltage damping in power systems[J].Power Electronics,IEEE Transactions on,2013,28(1):135-143.
[14]孙孝峰,曾健,张芳,等.阻性有源滤波器分频控制位置的选择方案[J].中国电机工程学报,2011,31(28):65-70.Sun Xiaofeng,Zeng Jian,Zhang Fang,et al.Site selection strategy of discrete frequency resistive active power filter[J].Proceedings of the CSEE,2011,31(28):65-70(in Chinese).
[15]范瑞祥,罗安,涂春鸣.并联混合型有源滤波器的分频控制方法研究[J].中国电机工程学报,2007,27(25):108-113.Fan Ruixiang,Luo An,Tu Chunming.The frequency dividing control research based on shunt hybrid active power filter[J].Proceedings of the CSEE,2007,27(25):108-113(in Chinese).
[16]吴振辉,彭晓涛,沈阳武,等.一种配电网环形供电模型及其合环运行方式的研究[J].中国电机工程学报,2013,33(10):57-63.Wu Zhenhui,Peng Xiaotao,Shen Yangwu,et al.Study on a loop power supply model and its loop-close operation mode for distribution network[J].Proceedings of the CSEE,2013,33(10):57-63(in Chinese).
[17]Huang W T,Chen T H,Pu G C,et al.Assessment of upgrading existing primary feeders from radial to normally closed loop arrangement[C]//Transmission and Distribution Conference and Exhibition 2202.Asia Pacific:IEEE,2002:2123-2128.
[18]Chen T H,Hung W T,Gu J C,et al.Feasibility study of upgrading primary feeders from radial and open-loop to normally closed-loop arrangement[J].Power Systems,IEEE Transactions on,2004,19(3):1308-1316.
[19]Lee T L,Cheng P T.A harmonic damping method for a loop power system[C]//Industry Applications Society Annual Meeting.Edmonton,Alta:IEEE,2008:1-8.
[20]Lee T L,Hu Shanghun.Discrete frequency-tuning active filter to suppress harmonic resonances of closed-loop distribution power systems[J].Power Electronics,IEEE Transactions on,2001,26(1):137-148.
[21]Cheng P T,Lee T L.Analysis of harmonic damping effect of the distributed active filter system[J].Industry Applications,IEEE Transactions on,2006,126(5):605-614.
[22]Sun Xiaofeng,Li Zhichao,Lu Gong.A novel control strategy of active filter for suppressing background harmonic voltage magnification in power distribution system[C]//Power Electronics and Motion Control Conference(IPEMC),2012 7th International.Harbin,China:IEEE,2012:2779-2783.