一种新型的基于变压器谐波磁势平衡的有源电力滤波方法
|
摘要
为降低有源电力滤波器(APF)开关器件耐压水平,充分发挥低压大电流开关器件和装置容量潜能,节省APF与网侧线路相连接的升压变压器成本,并有效降低直流稳压电容的额定电压,提出一种新型的基于变压器谐波磁势平衡的有源电力滤波方法。该方法将有源电力滤波装置接于变压器二次侧绕组抽头中间,使该装置产生的谐波电流磁势在变压器二次侧与负载谐波电流磁势相互抵消,从而使得网侧电流谐波含量显著降低。详细分析了运用该谐波磁势平衡在变压器二次侧绕组进行滤波的数学原理,并对配电网侧常用的10 k V/380 V Y/△及△/Y变压器进行了负载谐波电流滤波仿真,并通过实验验证了该滤波方法的可行性。
To reduce the voltage withstand capability of APF( Active Power Filter) switch,exploit the capacity potential of both low-voltage large-current switches and devices,save the cost of boosting transformer which connected with APF and grid-side lines,and reduce the nominal voltage of DC stabilized voltage capacitor effectively,a novel active power filtering approach based on the harmonic magnetic potential balance of transformer is proposed. The active power filtering device is connected to the middle of the secondary side winding tap of transformer in this approach,the harmonic current magnetic potential produced by the device and load cancels out each other at the secondary side of transformer consequently,hence the grid-side harmonic current is significantly decreased. The detailed filtering mathematical principle associated with the harmonic magnetic potential balance in the secondary side winding of transformer is analyzed. Filtering simulation on widely used 10 k V/380 V Y/△ and △/Y transformers at the distribution network side is performed. Finally,the effectiveness of the proposed filtering approach is verified by experiments.
To reduce the voltage withstand capability of APF( Active Power Filter) switch,exploit the capacity potential of both low-voltage large-current switches and devices,save the cost of boosting transformer which connected with APF and grid-side lines,and reduce the nominal voltage of DC stabilized voltage capacitor effectively,a novel active power filtering approach based on the harmonic magnetic potential balance of transformer is proposed. The active power filtering device is connected to the middle of the secondary side winding tap of transformer in this approach,the harmonic current magnetic potential produced by the device and load cancels out each other at the secondary side of transformer consequently,hence the grid-side harmonic current is significantly decreased. The detailed filtering mathematical principle associated with the harmonic magnetic potential balance in the secondary side winding of transformer is analyzed. Filtering simulation on widely used 10 k V/380 V Y/△ and △/Y transformers at the distribution network side is performed. Finally,the effectiveness of the proposed filtering approach is verified by experiments.
引文
[1]RAHMANI S,HAMADI A,AL-HADDAD K. A Lyapunov-functionbased control for a three-phase shunt hybrid active filter[J]. IEEE Transactions on Industrial Electronics,2012,59(3):1418-1429.
[2]张晓虎,罗隆福,李勇,等.大功率工业整流系统能效在线监测系统及其远程校准算法[J].电力自动化设备,2014,34(12):123-130.ZHANG Xiaohu,LUO Longfu,LI Yong,et al. Online energy-efficiency monitoring system for large-power industrial rectifier system and its remote calibration algorithm[J]. Electric Power Automation Equipment,2014,34(12):123-130.
[3]魏伟,许胜辉,孙剑波.一种无源滤波器的优化设计方法[J].电力自动化设备,2012,32(1):62-66.WEI Wei,XU Shenghui,SUN Jianbo. Optimal design of passive filter[J]. Electric Power Automation Equipment,2012,32(1):62-66.
[4]王灿,罗隆福,陈跃辉,等.一种改进型感应滤波高压直流输电系统及其谐波传递特性分析[J].电力自动化设备,2015,35(10):127-132.WANG Can,LUO Longfu,CHEN Yuehui,et al. Improved HVDC system based on inductive filtering and its harmonic transfer characteristics[J]. Electric Power Automation Equipment,2015,35(10):127-132.
[5]刘文业,罗隆福,李勇,等.基于感应滤波的工业整流系统潜在谐波放大及防治措施[J].电工技术学报,2014,29(2):304-317.LIU Wenye,LUO Longfu,LI Yong,et al. Potential harmonic amplification and its prevention of industrial rectifier system based on inductive filtering method[J]. Transactions of China Electrotechnical Society,2014,29(2):304-317.
[6]曾进辉,罗隆福,罗伟原,等.系统故障和参数变化对感应滤波型直流输电系统换相失败的影响[J].电力自动化设备,2014,34(1):14-20.ZENG Jinhui,LUO Longfu,LUO Weiyuan,et al. Impact of system faults and parameter variation on commutation failure of inductive filtering HVDC system[J]. Electric Power Automation Equipment,2014,34(1):14-20.
[7]商少锋,陈识微,蒋鲁军.模块化并联型低压有源电力滤波装置的设计与工程应用[J].电网技术,2008,32(3):93-98.SHANG Shaofeng,CHEN Shiwei,JIANG Lujun. Design and engineering practice of modularized shunt active power filter for low voltage[J]. Power System Technology,2008,32(3):93-98.
[8] GUZMAN R,DE VICUA L G,MORALES J,et al. Model-based control for a three-phase shunt active power filter[J]. IEEE Transactions on Industrial Electronics,2016,69(7):3998-4007.
[9]PANIGRAHI R,SUBUDHI B. Performance enhancement of shunt active power filter using a Kalman filter-based H∞control strategy[J]. IEEE Transactions on Power Electronics,2016,32(4):2622-2630.
[10]KOMURCUGI H,ALTIN N,OZDEMIR S,et al. Lyapunov-function and proportional-resonant-based control strategy for single-phase grid-connected VSI with LCL filter[J]. IEEE Transactions on Power Electronics,2016,63(5):2838-2849.
[11]HU Sijia,ZHANG Zhiwen,LI Yong,et al. A new half-bridge winding compensation-based power conditioning system for electric railway with LQRI[J]. IEEE Transactions on Power Electronics,2014,29(10):5242-5256.
[12]XIE Bin,ZHANG Zhiwen,HU Sijia,et al. YN/VD connected balance transformer-based electrical railway negative sequence current compensation system with passive control scheme[J]. IET Power Electronics,2016,9(10):2044-2051.
[13]LI Yong,LIU Qianyi,HU Sijia,et al. A virtual impedance comprehensive control strategy for the controllably inductive power filtering system[J]. IEEE Transactions on Power Electronics,2017,32(2):920-926.
[14]宁志毫,罗隆福,张志文,等.节能滤波型变压器及其整流系统关键问题研究[J].电力自动化设备,2012,32(4):20-25.NING Zhihao,LUO Longfu,ZHANG Zhiwen,et al. Key techniques of rectifier system based on energy-saving and filtering transformer[J]. Electric Power Automation Equipment,2012,32(4):20-25.
[2]张晓虎,罗隆福,李勇,等.大功率工业整流系统能效在线监测系统及其远程校准算法[J].电力自动化设备,2014,34(12):123-130.ZHANG Xiaohu,LUO Longfu,LI Yong,et al. Online energy-efficiency monitoring system for large-power industrial rectifier system and its remote calibration algorithm[J]. Electric Power Automation Equipment,2014,34(12):123-130.
[3]魏伟,许胜辉,孙剑波.一种无源滤波器的优化设计方法[J].电力自动化设备,2012,32(1):62-66.WEI Wei,XU Shenghui,SUN Jianbo. Optimal design of passive filter[J]. Electric Power Automation Equipment,2012,32(1):62-66.
[4]王灿,罗隆福,陈跃辉,等.一种改进型感应滤波高压直流输电系统及其谐波传递特性分析[J].电力自动化设备,2015,35(10):127-132.WANG Can,LUO Longfu,CHEN Yuehui,et al. Improved HVDC system based on inductive filtering and its harmonic transfer characteristics[J]. Electric Power Automation Equipment,2015,35(10):127-132.
[5]刘文业,罗隆福,李勇,等.基于感应滤波的工业整流系统潜在谐波放大及防治措施[J].电工技术学报,2014,29(2):304-317.LIU Wenye,LUO Longfu,LI Yong,et al. Potential harmonic amplification and its prevention of industrial rectifier system based on inductive filtering method[J]. Transactions of China Electrotechnical Society,2014,29(2):304-317.
[6]曾进辉,罗隆福,罗伟原,等.系统故障和参数变化对感应滤波型直流输电系统换相失败的影响[J].电力自动化设备,2014,34(1):14-20.ZENG Jinhui,LUO Longfu,LUO Weiyuan,et al. Impact of system faults and parameter variation on commutation failure of inductive filtering HVDC system[J]. Electric Power Automation Equipment,2014,34(1):14-20.
[7]商少锋,陈识微,蒋鲁军.模块化并联型低压有源电力滤波装置的设计与工程应用[J].电网技术,2008,32(3):93-98.SHANG Shaofeng,CHEN Shiwei,JIANG Lujun. Design and engineering practice of modularized shunt active power filter for low voltage[J]. Power System Technology,2008,32(3):93-98.
[8] GUZMAN R,DE VICUA L G,MORALES J,et al. Model-based control for a three-phase shunt active power filter[J]. IEEE Transactions on Industrial Electronics,2016,69(7):3998-4007.
[9]PANIGRAHI R,SUBUDHI B. Performance enhancement of shunt active power filter using a Kalman filter-based H∞control strategy[J]. IEEE Transactions on Power Electronics,2016,32(4):2622-2630.
[10]KOMURCUGI H,ALTIN N,OZDEMIR S,et al. Lyapunov-function and proportional-resonant-based control strategy for single-phase grid-connected VSI with LCL filter[J]. IEEE Transactions on Power Electronics,2016,63(5):2838-2849.
[11]HU Sijia,ZHANG Zhiwen,LI Yong,et al. A new half-bridge winding compensation-based power conditioning system for electric railway with LQRI[J]. IEEE Transactions on Power Electronics,2014,29(10):5242-5256.
[12]XIE Bin,ZHANG Zhiwen,HU Sijia,et al. YN/VD connected balance transformer-based electrical railway negative sequence current compensation system with passive control scheme[J]. IET Power Electronics,2016,9(10):2044-2051.
[13]LI Yong,LIU Qianyi,HU Sijia,et al. A virtual impedance comprehensive control strategy for the controllably inductive power filtering system[J]. IEEE Transactions on Power Electronics,2017,32(2):920-926.
[14]宁志毫,罗隆福,张志文,等.节能滤波型变压器及其整流系统关键问题研究[J].电力自动化设备,2012,32(4):20-25.NING Zhihao,LUO Longfu,ZHANG Zhiwen,et al. Key techniques of rectifier system based on energy-saving and filtering transformer[J]. Electric Power Automation Equipment,2012,32(4):20-25.