光伏电站并网逆变器与无功补偿装置的协调控制策略
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摘要
通过建立光伏电站的等效电路图,分析了其有功出力变化对并网点电压造成的影响。根据GB/T 29321-2012对无功补偿的技术要求,提出了在优先保证电网安全稳定运行的前提下,同时考虑满足线损最小及容量限制等要求的协调控制策略。并基于Simulink的软件平台,搭建了光伏电站的仿真模型,验证了并网点电压稳定性分析的正确性和协调控制策略的有效性。
Through establishing the equivalent circuit diagram of the PV power station, the variation of the active power which exerts the influence on the voltage of the grid is analyzed.According to the technical requirements of GB/T 29321-2012 for reactive power compensation, a coordinated control strategy is proposed to ensure the safe and stable operation of the power grid, and the minimum line loss and the grid capacity limitation are taken into account at the same time. Based on the Simulink platform, the simulation model of the PV power station is established,and the validity of the voltage stability analysis and the effectiveness of coordinated control are verified.
Through establishing the equivalent circuit diagram of the PV power station, the variation of the active power which exerts the influence on the voltage of the grid is analyzed.According to the technical requirements of GB/T 29321-2012 for reactive power compensation, a coordinated control strategy is proposed to ensure the safe and stable operation of the power grid, and the minimum line loss and the grid capacity limitation are taken into account at the same time. Based on the Simulink platform, the simulation model of the PV power station is established,and the validity of the voltage stability analysis and the effectiveness of coordinated control are verified.
引文
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[11]战杰,董存,张彦,等.MW级光伏电站建模及其并网对配电网的影响分析[J].山东电力高等专科学校学报,2011,14(1):1-6.ZHAN Jie,DONG Cun,ZHANG Yan,et al.Affectionanalysis on MW-class PV station'model and its gird connection related to distribution networks[J].Journal of Shandong Electric Power College,2011,14(1):1-6.
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[15]赵萌萌,江新峰,胡琴洪,等.SVG在光伏电站无功补偿中的应用[J].电力电容器与无功补偿,2016,37(3):35-38.ZHAO Mengmeng,JIANG Xinfeng,HU Qinhong,et al.Application of SVG to reactive compensation of photovoltaic power plant[J].Power Capacitor&Reactive Power Compensation,2016,37(3):35-38.
[16]詹敏青,尹柳,杨民京.基于PSASP的光伏发电系统建模及其并网对微电网电压质量的影响[J].陕西电力,2014,42(2):16-22.ZHAN Minqing,YIN Liu,YANG Minjing.Modeling of grid-connected PV generation system and the impact to voltage quality of micro-grid based on PSASP[J].Shaanxi Electric Power,2014,42(2):16-22.
[17]黄亚峰,于洋,严干贵,等.光伏逆变器无功调节能力分析与控制策略研究[J].电网与清洁能源,2013,29(8):88-93.HUANG Yafeng,YU Yang,YAN Gangui,et al.Reactive power regulation analysis and control strategy studies on grid-connected photovoltaic inverters[J].Power System and Clean Energy,2013,29(8):88-93.
[18]陈树勇,鲍海,吴春洋,等.分布式光伏发电并网功率直接控制方法[J].中国电机工程学报,2011,31(10):6-11.CHEN Shuyong,BAO Hai,WU Chunyang,et al.Directgrid-tie power control method for distributed photovoltaic generation[J].Proceedings of the CSEE,2011,31(10):6-11.
[19]陈波,朱晓东,朱凌志,等.光伏电站低电压穿越时的无功控制策略[J].电力系统保护与控制,2012,40(17):6-12.CHEN Bo,ZHU Xiaodong,ZHU Lingzhi,et al.Strategy for reactive control in low voltage ride throughof photovoltaic power station[J].Power System Protection and Control,2012,40(17):6-12.
[20]阚加荣,谢少军,吴云亚.无互联线并联逆变器的功率解耦控制策略[J].中国电机工程学报,2008,28(21):40-45.KAN Jiarong,XIE Shaojun,WU Yunya.Research on decoupling droop characteristic for parallel inverters without control interconnection[J].Proceedings of the CSEE,2008,28(21):40-45.
[21]MARINOPOULOS A,PAPANDREA F,REZA M,et al.Grid integration aspects of large solar PV installations:LVRT capability and reactive power/voltage support requirements[C]//Power Tech 2011 IEEE Trondheim,2011(6):1-8.
[22]黄欣科,王环,王一波,等.光伏发电系统并网点电压升高调整原理及策略[J].电力系统自动化,2014,38(3):112-117.HUANG Xinke,WANG Huan,WANG Yibo,et al.Principle and strategies of voltage rise regulation for grid-connected photovoltaic generation system at point of common coupling[J].Automation of Electric Power Systems,2014,38(3):112-117.
[23]葛虎,毕锐,徐志成,等.大型光伏电站无功电压控制研究[J].电力系统保护与控制,2014,42(14):45-51.GE Hu,BI Rui,XU Zhicheng,et al.Research on reactive power and voltage control of large-scale photovoltaic power station[J].Power System Protection and Control,2014,42(14):45-51.
[24]高胜利,冯文秀,申强,等.风光互补逆变器控制方法的研究与仿真[J].节能技术,2012,30(5):405-408.GAO Shengli,FENG Wenxiu,SHEN Qiang,et al.The research and simulation of wind and solar inverter control method[J].Energy Conservation Technology,2012,30(5):405-408.
[25]李冬辉,桑元.一种基于SVPWM并网逆变器电流控制的研究[J].节能技术,2014,32(5):419-422.LI Donghui,SANG Yuan.The research of grid-connected inverter current control based on SVPWM[J].Energy Conservation Technology,2014,32(5):419-422.
[26]GB/T 29321-2012光伏发电站无功补偿技术规范[S].GB/T 29321-2012 Technical specification for reactive powercompensation of PV power station[S].
[27]程浩忠,艾芊,张志刚,等.电能质量[M].北京:清华大学出版社,2006.
[2]陈海飞,苗淼,常康.大型并网光伏电站无功电压控制综述[J].陕西电力,2016,44(10):20-26.CHEN Haifei,MI AO Miao,CHANG Kang.Review on reactive voltage control for large-scale grid-connected PV power station[J].Shaanxi Electric Power,2016,44(10):20-26.
[3]丁明,王伟胜,王秀丽,等.大规模光伏发电对电力系统影响综述[J].中国电机工程学报,2014,34(1):1-14.DING Ming,WANG Weisheng,WANG Xiuli,et al.A review on the effectoflarge-scale PV generation on power systems[J].Proceedings of the CSEE,2014,34(1):1-14.
[4]陈炜,艾欣,吴涛,等.光伏并网发电系统对电网的影响研究综述[J].电力自动化设备,2013,33(2):26-32,39.CHEN Wei,AI Xin,WU Tao,et al.Influence of grid-connected photovoltaic system on power network[J].Electric Power Automation Equipment,2013,33(2):26-32,39.
[5]赵春江,杨金焕,陈中华,等.太阳能光伏发电应用的现状及发展[J].节能技术,2007,25(5):461-465.ZHAO Chunjiang,YANG Jinhuan,CHEN Zhonghua,et al.State and development of photovoltaic application[J].Energy Conservation Technology,2007,25(5):461-465.
[6]BOEMER J C,GIBESCU M,KLING,W L.Dynamic models for transient stability analysis of transmission and distribution systems with distributed generation:an overview[C]//Proceedings of the IEEE Power Technology Confer-ence,Bucharest,Romania,2009:1-8.
[7]张立梅,唐巍,赵云军,等.分布式发电接人配电网后对系统电压及损耗的影响分析[J].电力系统保护与控制,2011,39(5):91-96.ZHANG Limei,TANG Wei,ZHAO Yunjun,et al.Analysis of DG influences on system voltage and losses in distribution network[J].Power System Protection and Control,2011,39(5):91-96.
[8]TAN Y T,KIRSCHEN D S.Impact on the power system of alarge penetration of photovoltaic generation[C]//IEEE Power Engineering Society General Meeting,Tampa,2007.
[9]ALQUTHAMI T,RAVINDRA H,FARUQUE M O.Study of photovoltaic integration impact on system stability usingcustom model of PV arrays integrated with PSS/E[C]//North American Power Symposium(NAPS),Arlington,2010.
[10]张琪祁,徐政.考虑配网电压暂态的大型光伏电站接入选点仿真研究[J].高压电器,2010,46(12):54-58.ZHANG Qiqi,XU Zheng.Simulation study onintegration siting of large-scale PV plant considering voltage fluctuation in distribution network[J].High Voltage Apparatus,2010,46(12):54-58.
[11]战杰,董存,张彦,等.MW级光伏电站建模及其并网对配电网的影响分析[J].山东电力高等专科学校学报,2011,14(1):1-6.ZHAN Jie,DONG Cun,ZHANG Yan,et al.Affectionanalysis on MW-class PV station'model and its gird connection related to distribution networks[J].Journal of Shandong Electric Power College,2011,14(1):1-6.
[12]陈权,李令冬,王群京,等.光伏电站并网系统的仿真建模及对配电网电压稳定性影响[J].电工技术学报,2013,28(3):241-247.CHEN Quan,LI Lingdong,WANG Qunjing,et al.Simulation model of photovoltaic generation grid-connected systemand its impacts on voltage stability in distributiongrid[J].Transactions of China Electrotechnical Society,2013,28(3):241-247.
[13]邹必昌,李涛,唐涛波.分布式发电对配电网的影响研究[J].陕西电力,2011(5):9-13.ZOU Bichang,LI Tao,TANG Taobo.Impacts of distributed generation on power distribution system[J].Shaanxi Electric Power,2011(5):9-13.
[14]刘耀远,曾碧成,李庭敏,等.基于超级电容的光伏并网低电压穿越控制策略研究[J].电力系统保护与控制,2014,42(13):77-82.LIU Yaoyuan,ZENG Bicheng,LI Tingmin,et al.Study on low-voltage ride through control strategy of photovoltaicsystem based on super-capacitoi[J].Power System Protection and Control,2014,42(13):77-82.
[15]赵萌萌,江新峰,胡琴洪,等.SVG在光伏电站无功补偿中的应用[J].电力电容器与无功补偿,2016,37(3):35-38.ZHAO Mengmeng,JIANG Xinfeng,HU Qinhong,et al.Application of SVG to reactive compensation of photovoltaic power plant[J].Power Capacitor&Reactive Power Compensation,2016,37(3):35-38.
[16]詹敏青,尹柳,杨民京.基于PSASP的光伏发电系统建模及其并网对微电网电压质量的影响[J].陕西电力,2014,42(2):16-22.ZHAN Minqing,YIN Liu,YANG Minjing.Modeling of grid-connected PV generation system and the impact to voltage quality of micro-grid based on PSASP[J].Shaanxi Electric Power,2014,42(2):16-22.
[17]黄亚峰,于洋,严干贵,等.光伏逆变器无功调节能力分析与控制策略研究[J].电网与清洁能源,2013,29(8):88-93.HUANG Yafeng,YU Yang,YAN Gangui,et al.Reactive power regulation analysis and control strategy studies on grid-connected photovoltaic inverters[J].Power System and Clean Energy,2013,29(8):88-93.
[18]陈树勇,鲍海,吴春洋,等.分布式光伏发电并网功率直接控制方法[J].中国电机工程学报,2011,31(10):6-11.CHEN Shuyong,BAO Hai,WU Chunyang,et al.Directgrid-tie power control method for distributed photovoltaic generation[J].Proceedings of the CSEE,2011,31(10):6-11.
[19]陈波,朱晓东,朱凌志,等.光伏电站低电压穿越时的无功控制策略[J].电力系统保护与控制,2012,40(17):6-12.CHEN Bo,ZHU Xiaodong,ZHU Lingzhi,et al.Strategy for reactive control in low voltage ride throughof photovoltaic power station[J].Power System Protection and Control,2012,40(17):6-12.
[20]阚加荣,谢少军,吴云亚.无互联线并联逆变器的功率解耦控制策略[J].中国电机工程学报,2008,28(21):40-45.KAN Jiarong,XIE Shaojun,WU Yunya.Research on decoupling droop characteristic for parallel inverters without control interconnection[J].Proceedings of the CSEE,2008,28(21):40-45.
[21]MARINOPOULOS A,PAPANDREA F,REZA M,et al.Grid integration aspects of large solar PV installations:LVRT capability and reactive power/voltage support requirements[C]//Power Tech 2011 IEEE Trondheim,2011(6):1-8.
[22]黄欣科,王环,王一波,等.光伏发电系统并网点电压升高调整原理及策略[J].电力系统自动化,2014,38(3):112-117.HUANG Xinke,WANG Huan,WANG Yibo,et al.Principle and strategies of voltage rise regulation for grid-connected photovoltaic generation system at point of common coupling[J].Automation of Electric Power Systems,2014,38(3):112-117.
[23]葛虎,毕锐,徐志成,等.大型光伏电站无功电压控制研究[J].电力系统保护与控制,2014,42(14):45-51.GE Hu,BI Rui,XU Zhicheng,et al.Research on reactive power and voltage control of large-scale photovoltaic power station[J].Power System Protection and Control,2014,42(14):45-51.
[24]高胜利,冯文秀,申强,等.风光互补逆变器控制方法的研究与仿真[J].节能技术,2012,30(5):405-408.GAO Shengli,FENG Wenxiu,SHEN Qiang,et al.The research and simulation of wind and solar inverter control method[J].Energy Conservation Technology,2012,30(5):405-408.
[25]李冬辉,桑元.一种基于SVPWM并网逆变器电流控制的研究[J].节能技术,2014,32(5):419-422.LI Donghui,SANG Yuan.The research of grid-connected inverter current control based on SVPWM[J].Energy Conservation Technology,2014,32(5):419-422.
[26]GB/T 29321-2012光伏发电站无功补偿技术规范[S].GB/T 29321-2012 Technical specification for reactive powercompensation of PV power station[S].
[27]程浩忠,艾芊,张志刚,等.电能质量[M].北京:清华大学出版社,2006.