基于锂电池系统模块化和PCS控制策略的研究
|
摘要
针对目前电网用户侧用电分布不均对电网产生的冲击和现阶段部分储能电池的利用率较为低下、寿命较短等问题进行研究,提出了模块化储能电池并网的方案;利用升降压电路、均衡电路以及能源管理控制相结合形成的电池模块取代传统的电池组直接串并联,通过PCS电路连接变压器将电池模块并网;在对PCS系统进行研究时,采取准比例谐振控制和比例积分控制结合的控制策略,在两相静止坐标系控制下,保证无静差追踪,使用电压电流双环控制,保证并网的准确性和稳定性;最后对研究进行MATLAB实验仿真,得到的并网电流符合要求,证明了研究的可行性:可以通过电池模块对所要缓解压力的用户侧变压器进行并网减压。
Aiming at the impact of uneven distribution of power consumption on power grid,the low utilization rate and short life of some energy storage batteries at the present stage,a scheme of modular energy storage battery interconnection is proposed. Battery modules are formed by combining voltage-up and voltage-down circuit,equalization circuit and energy management control to replace traditional batteries directly in series and parallel.Battery modules are connected to transformers through PCS circuit for grid connection. In the study of PCS,a control strategy combining quasi-proportional resonance control and proportional integral control is adopted. Under the control of two-phase stationary coordinate system,no static error tracking is ensured,and voltage and current double-loop control is used to ensure the accuracy and stability of grid connection. Finally,the research is simulated by MATLAB experiment,and the grid-connected current meets the requirements,which proves the feasibility of the research. The grid-connected decompression of the user-side transformer to alleviate the pressure can be carried out through the battery module.
Aiming at the impact of uneven distribution of power consumption on power grid,the low utilization rate and short life of some energy storage batteries at the present stage,a scheme of modular energy storage battery interconnection is proposed. Battery modules are formed by combining voltage-up and voltage-down circuit,equalization circuit and energy management control to replace traditional batteries directly in series and parallel.Battery modules are connected to transformers through PCS circuit for grid connection. In the study of PCS,a control strategy combining quasi-proportional resonance control and proportional integral control is adopted. Under the control of two-phase stationary coordinate system,no static error tracking is ensured,and voltage and current double-loop control is used to ensure the accuracy and stability of grid connection. Finally,the research is simulated by MATLAB experiment,and the grid-connected current meets the requirements,which proves the feasibility of the research. The grid-connected decompression of the user-side transformer to alleviate the pressure can be carried out through the battery module.
引文
[1]马守达,杨锦成,崔乘刚,等.能源互联网储能技术应用研究[J].发电技术,2018,39(5):412—418MA S D,YANG J C,CUI C G,et al. Application of Energy Internet Energy Storage Technology[J]. Power Generation Technology,2018,39(5):412—418(in Chinese)
[2]朱明正,高宁,陈道,等.基于锂电池的储能功率转换系统[J].电力电子技术,2013,47(9):75—76ZHU M Z,GAO N,CHEN D,et al. Energy Storage Power Conversion System Based on Lithium Battery[J].Power Electronics Technology,2013,47(9):75—76(in Chinese)
[3]郑红峰,杨亦红,郑颢,等.准PR的复合控制技术在光伏并网逆变器中的应用[J].太阳能学报,2016,37(5):1190—1196ZHENG H F, YANG Y H, ZHENG H, et al.Application of Quasi-PR Composite Control Technology in Grid-connected Photovoltaic Inverters[J]. Journal of Solar Energy,2016,37(5):1190—1196(in Chinese)
[4]刘成尧,宋宏,刘元.基于SOC的车用锂电池组双向均衡策略研究[J].科技通报,2018,34(9):104—109LIU C Y,SONG H,LIU Y. Research on Bi-directional Equalization Strategy of Lithium Battery Pack for Vehicle Based on SOC[J]. Bulletin of Science and Technology,2018,34(9):104—109(in Chinese)
[5]邓晔,胡越黎,滕华强.锂电池开路电压的预估及SOC估算[J].仪表技术,2015,47(2):21—24DENG Y,HU Y L,TENG H Q. Estimation of Opencircuit Voltage and SOC of Lithium Batteries[J].Instrument Technology, 2015, 47(2):21—24(in Chinese)
[6]夏鲲,洪信炜,袁印,等.用于电池组储能的双向DC/DC变换器研究[J].系统仿真学报,2018,30(8):3219—3228XIA K,HONG X W,YUAN Y,et al. Bidirectional DC/DC Converter for Battery Pack Energy Storage[J].Journal of Systems Simulation,2018,30(8):3219—3228(in Chinese)
[7]李建林,徐少华,惠东.一种适合于储能型PCS的PI与准PR控制策略研究[J].电工电能新技术,2015,35(2):54—61LI J L,XU S H,HUI D. Research on PI and Quasi-PR Control Strategy for Energy Storage PCS[J]. New Electrical and Electrical Technology,2015,35(2):54—61(in Chinese)
[8]毛鹏.小功率光伏发电系统关键技术的研究[D].北京:北京理工大学,2015MAO P. Research on Key Technologies of Low Power Photovoltaic Power Generation System[D]. Beijing:Beijing University of Technology,2015(in Chinese)
[9]雷亚雄,李建文,李永刚.基于准PR调节器电流双闭环LCL三相并网逆变器控制[J].电力系统保护与控制,2014,42(12):45—50LEI Y X,LI J W,LI Y G. Current Double Closed-loop LCL Three-phase Grid-connected Inverter Control Based on Quasi-PR Regulator[J]. Power System Protection and Control,2014,42(12):45—50(in Chinese)
[10]许津铭,谢少军,肖华锋. LCL滤波器有源阻尼控制机制研究[J].中国电机工程学报,2012,32(9):27—33XU J M,XIE S J,XIAO H F. Study on Active Damping Control Mechanism of LCL Filter[J]. Chinese Journal of Electrical Engineering, 2012, 32(9):27—33(in Chinese)
[11]杨勇,赵春江.分布式发电系统中并网逆变器比例谐振控制[J].电力自动化设备,2011,31(11):51—55YANG Y,ZHAO C J. Proportional Resonance Control of Grid-Connected Inverters in Distributed Generation System[J]. Power Automation Equipment,2011,31(11):51—55(in Chinese)
[12]常春贺,曹鹏举,杨江平,等. PR调节器在逆变电源中的应用[J].电源技术,2010,34(10):1049—1052CHANG C H,CAO P J,YANG J P,et al. Application of PR Regulator in Inverters[J]. Power Supply Technology,2010,34(10):1049—1052(in Chinese)
[13]杨尚霖,王君艳.基于改进型PR调节器的三相PWM整流器控制[J].现代电子技术,2015,38(11):152—155YANG S L,WANG J Y. Three-phase PWM Rectifier Control Based on Improved PR Regulator[J]. Modern Electronic Technology,2015,38(11):152—155(in Chinese)
[14]马琳,金新民,唐芬,等.三相并网逆变器比例谐振控制及其网压前馈问题分析[J].电工技术学报,2014,27(8):56—63MA L, JIN X M, TANG F, et al. Analysis of Proportional Resonance Control and Network Voltage Feed-forward of Three-phase Grid-connected Inverters[J].Journal of Electrical Technology,2014,27(8):56—63(in Chinese)
[15]杭丽君,李宾,黄龙,等.一种可再生能源并网逆变器的多谐振PR电流控制技术[J].中国电机工程学报,2012,32(12):51—58HANG L J,LI B,HUANG L,et al. A Multi-resonance PR Current Control Technology for Renewable Energy Grid-connected Inverters[J]. China Journal of Electrical Engineering,2012,32(12):51—58(in Chinese)
[16]张野,熊卿,杨健.微电网中电压源型逆变器无功优化控制策略研究[J].广东电力,2017,30(4):50—54ZHANG Y,XIONG Q,YANG J. Study on Reactive Power Optimization Control Strategy of Voltage Source Inverters in Microgrid[J]. Guangdong Electric Power,2017,30(4):50—54(in Chinese)
[2]朱明正,高宁,陈道,等.基于锂电池的储能功率转换系统[J].电力电子技术,2013,47(9):75—76ZHU M Z,GAO N,CHEN D,et al. Energy Storage Power Conversion System Based on Lithium Battery[J].Power Electronics Technology,2013,47(9):75—76(in Chinese)
[3]郑红峰,杨亦红,郑颢,等.准PR的复合控制技术在光伏并网逆变器中的应用[J].太阳能学报,2016,37(5):1190—1196ZHENG H F, YANG Y H, ZHENG H, et al.Application of Quasi-PR Composite Control Technology in Grid-connected Photovoltaic Inverters[J]. Journal of Solar Energy,2016,37(5):1190—1196(in Chinese)
[4]刘成尧,宋宏,刘元.基于SOC的车用锂电池组双向均衡策略研究[J].科技通报,2018,34(9):104—109LIU C Y,SONG H,LIU Y. Research on Bi-directional Equalization Strategy of Lithium Battery Pack for Vehicle Based on SOC[J]. Bulletin of Science and Technology,2018,34(9):104—109(in Chinese)
[5]邓晔,胡越黎,滕华强.锂电池开路电压的预估及SOC估算[J].仪表技术,2015,47(2):21—24DENG Y,HU Y L,TENG H Q. Estimation of Opencircuit Voltage and SOC of Lithium Batteries[J].Instrument Technology, 2015, 47(2):21—24(in Chinese)
[6]夏鲲,洪信炜,袁印,等.用于电池组储能的双向DC/DC变换器研究[J].系统仿真学报,2018,30(8):3219—3228XIA K,HONG X W,YUAN Y,et al. Bidirectional DC/DC Converter for Battery Pack Energy Storage[J].Journal of Systems Simulation,2018,30(8):3219—3228(in Chinese)
[7]李建林,徐少华,惠东.一种适合于储能型PCS的PI与准PR控制策略研究[J].电工电能新技术,2015,35(2):54—61LI J L,XU S H,HUI D. Research on PI and Quasi-PR Control Strategy for Energy Storage PCS[J]. New Electrical and Electrical Technology,2015,35(2):54—61(in Chinese)
[8]毛鹏.小功率光伏发电系统关键技术的研究[D].北京:北京理工大学,2015MAO P. Research on Key Technologies of Low Power Photovoltaic Power Generation System[D]. Beijing:Beijing University of Technology,2015(in Chinese)
[9]雷亚雄,李建文,李永刚.基于准PR调节器电流双闭环LCL三相并网逆变器控制[J].电力系统保护与控制,2014,42(12):45—50LEI Y X,LI J W,LI Y G. Current Double Closed-loop LCL Three-phase Grid-connected Inverter Control Based on Quasi-PR Regulator[J]. Power System Protection and Control,2014,42(12):45—50(in Chinese)
[10]许津铭,谢少军,肖华锋. LCL滤波器有源阻尼控制机制研究[J].中国电机工程学报,2012,32(9):27—33XU J M,XIE S J,XIAO H F. Study on Active Damping Control Mechanism of LCL Filter[J]. Chinese Journal of Electrical Engineering, 2012, 32(9):27—33(in Chinese)
[11]杨勇,赵春江.分布式发电系统中并网逆变器比例谐振控制[J].电力自动化设备,2011,31(11):51—55YANG Y,ZHAO C J. Proportional Resonance Control of Grid-Connected Inverters in Distributed Generation System[J]. Power Automation Equipment,2011,31(11):51—55(in Chinese)
[12]常春贺,曹鹏举,杨江平,等. PR调节器在逆变电源中的应用[J].电源技术,2010,34(10):1049—1052CHANG C H,CAO P J,YANG J P,et al. Application of PR Regulator in Inverters[J]. Power Supply Technology,2010,34(10):1049—1052(in Chinese)
[13]杨尚霖,王君艳.基于改进型PR调节器的三相PWM整流器控制[J].现代电子技术,2015,38(11):152—155YANG S L,WANG J Y. Three-phase PWM Rectifier Control Based on Improved PR Regulator[J]. Modern Electronic Technology,2015,38(11):152—155(in Chinese)
[14]马琳,金新民,唐芬,等.三相并网逆变器比例谐振控制及其网压前馈问题分析[J].电工技术学报,2014,27(8):56—63MA L, JIN X M, TANG F, et al. Analysis of Proportional Resonance Control and Network Voltage Feed-forward of Three-phase Grid-connected Inverters[J].Journal of Electrical Technology,2014,27(8):56—63(in Chinese)
[15]杭丽君,李宾,黄龙,等.一种可再生能源并网逆变器的多谐振PR电流控制技术[J].中国电机工程学报,2012,32(12):51—58HANG L J,LI B,HUANG L,et al. A Multi-resonance PR Current Control Technology for Renewable Energy Grid-connected Inverters[J]. China Journal of Electrical Engineering,2012,32(12):51—58(in Chinese)
[16]张野,熊卿,杨健.微电网中电压源型逆变器无功优化控制策略研究[J].广东电力,2017,30(4):50—54ZHANG Y,XIONG Q,YANG J. Study on Reactive Power Optimization Control Strategy of Voltage Source Inverters in Microgrid[J]. Guangdong Electric Power,2017,30(4):50—54(in Chinese)