倒送功率约束下的分布式电源最大接入容量分析
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摘要
分布式电源(DG)接入配电网后,低电压等级电网可能倒送功率至高电压等级电网,对电网造成不利影响。在各种影响因素中,倒送功率限制是影响DG接入电网的主要因素。从倒送功率约束的角度出发,结合节点电压及潮流约束,建立了以DG接入容量最大为目标的数学模型,给出了最大接入容量的计算方法,并分析了DG的接入对配电网有功网损的影响。考虑节假日对负荷的影响,给出了调整倒送功率约束以增大DG接入容量的建议。以一个33节点的10 kV配电网接入分布式光伏电源为例,验证了所提方法的可行性。
Distributed Generation(DG) access to distribution network the power may be transmitted from low-voltage power grid to high-voltage, causing adverse impacts on power grid. Among all kinds of factors, the power restriction is the main factor that affects the access of DG to distribution network. A mathematical model of maximum capacity of DG is built when reverse power node voltage and power flow constraint are considered and then the calculation method is introduced in this paper. It also analyzes the effect of DG on active power loss of distribution network. Considering the effect of holidays on power load, the proposal of adjusting reverse power constraint to increase DG capacity is given. The feasibility of the proposed method is proved by the example of distributed photovoltaic(PV) generation access to a33-node 10 kV distribution network.
Distributed Generation(DG) access to distribution network the power may be transmitted from low-voltage power grid to high-voltage, causing adverse impacts on power grid. Among all kinds of factors, the power restriction is the main factor that affects the access of DG to distribution network. A mathematical model of maximum capacity of DG is built when reverse power node voltage and power flow constraint are considered and then the calculation method is introduced in this paper. It also analyzes the effect of DG on active power loss of distribution network. Considering the effect of holidays on power load, the proposal of adjusting reverse power constraint to increase DG capacity is given. The feasibility of the proposed method is proved by the example of distributed photovoltaic(PV) generation access to a33-node 10 kV distribution network.
引文
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[15]HE J,LIU L,DING F,et al.A new coordinated backup protection scheme for distribution network containing distributed generation[J].Protection and Control of Modern Power Systems,2017,2(2):102-110.DOI:10.1186/s41601-017-0043-3.
[16]于建成,迟福建,徐科,等.分布式电源接入对电网的影响分析[J].电力系统及其自动化学报,2012,24(1):138-141.YU Jiancheng,CHI Fujian,XU Ke,et al.Analysis of the impact of distributed generation on power grid[J].Proceedings of the CSU-EPSA,2012,24(1):138-141.
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[18]连欣乐,吴政球,赵柯宇,等.计及短路电流约束的分布式电源准入容量的计算[J].电力科学与技术学报,2008,23(1):50-55.LIAN Xinle,WU Zhengqiu,ZHAO Keyu,et al.Maximum penetration capacity calculation for distributed generation taking into account fault current constraint[J].Journal of Electric Power Science and Technology,2008,23(1):50-55.
[19]夏成军,崔弘,王强,等.考虑静态安全约束的分布式电源准入容量计算[J].电网技术,2009,33(16):96-100.XIA Chengjun,CUI Hong,WANG Qiang,et al.Penetration capacity calculation for distributed generation[J].Power System Technology,2009,33(16):96-100.
[20]胡美玉,胡志坚,史梦梦.基于改进粒子群优化算法的DG准入容量与优化布置[J].电力建设,2014,35(12):111-115.HU Meiyu,HU Zhijian,SHI Mengmeng.Penetration level and optimize layout of distributed generation based on improved particle swarm optimization algorithm[J].Electric Power Construction,2014,35(12):111-115.
[21]黄巍,吴俊勇,鲁思棋,等.电压偏差和谐波约束下配网光伏最大渗透率评估[J].电力系统保护与控制,2016,44(6):49-55.HUANG Wei,WU Junyong,LU Siqi,et al.Maximum photovoltaic penetration considering voltage deviation and harmonic constraints[J].Power System Protection and Control,2016,44(6):49-55.
[22]刘健,同向前,潘忠美,等.考虑过电压因素时分布式光伏电源的准入容量[J].电力系统保护与控制,2014,42(6):45-51.LIU Jian,TONG Xiangqian,PAN Zhongmei,et al.The maximum power of distributed PV generation according to over-voltage in distribution network[J].Power System Protection and Control,2014,42(6):45-51.
[23]王志群,朱守真,周双喜,等.分布式发电对配电网电压分布的影响[J].电力系统自动化,2004,28(16):57-60.WANG Zhiqun,ZHU Shouzhen,ZHOU Shuangxi,et al.The influence of distributed generation on voltage distribution of distribution network[J].Automation of Electric Power Systems,2004,28(16):57-60.
[24]文升,顾洁,程浩忠,等.分布式电源的准入容量与优化布置的实用方法[J].电力自动化设备,2012,32(10):109-114.WEN Sheng,GU Jie,CHENG Haozhong,et al.The access capacity of distributed power supply and the practical method of optimal layout[J].Electric Power Automation Equipment,2012,32(10):109-114.
[25]刘蓓,汪沨.配电网供电可靠性的分布式电源选址与定容[J].电源技术,2016,40(2):410-412.LIU Bei,WANG Feng.Siting and sizing of distributed generation based on distribution system reliability[J].Power Source Technology,2016,40(2):410-412.
[26]苏小玲,韩民晓,赵正奎,等.配电网中分布式电源最大准入容量分析[J].电网技术,2012,36(10):87-92.SU Xiaoling,HAN Minxiao,ZHAO Zhengkui,et al.Research on maximum capacity of grid-connected distributed generation in distribution network[J].Power System Technology,2012,36(10):87-92.
[27]刘磊,江辉,彭建春.分布式发电对配电网网损和电压分布的影响[J].计算机仿真,2010,27(4):279-283.LIU Lei,JIANG Hui,PENG Jianchun.Impact of distributed generation on distribution system power loss and voltage profile[J].Computer Simulation,2010,27(4):279-283.
[2]陈海东.基于细菌菌落优化算法分布式电源优化配置[J].电力系统保护与控制,2015,43(21):106-111.CHEN Haidong.Optimal power flow of distribution network with distributed generation based on bacterial colony optimization[J].Power System Protection and Control,2015,43(21):106-111.
[3]施泉生,郭良合,张孝君.综合考虑多主体经济效益的分布式电源优化配置研究[J].电力系统保护与控制,2016,44(1):85-91.SHI Quansheng,GUO Lianghe,ZHANG Xiaojun.Research on optimal configuration of distributed generation considering economic benefits of the multi-agent[J].Power System Protection and Control,2016,44(1):85-91.
[4]张跃,杨汾艳,曾杰,等.主动配电网的分布式电源优化规划方案研究[J].电力系统保护与控制,2015,43(15):67-72.ZHANG Yue,YANG Fenyan,ZENG Jie,et al.Research of distributed generation optimization planning for active distributed network[J].Power System Protection and Control,2015,43(15):67-72.
[5]李军,颜辉,张仰飞,等.配电网和微网中分布式电源选址定容方法对比分析[J].电力系统保护与控制,2017,45(5):147-154.LI Jun,YAN Hui,ZHANG Yangfei,et al.Comparison of locating and sizing methods of DGs between in microgrids and in distribution network[J].Power System Protection and Control,2017,45(5):147-154.
[6]黎灿兵,刘文灿,曹一家,等.管制市场中激励分布式能源发电的电能虚拟存储政策[J].中国电机工程学报,2014,34(19):3141-3147.LI Canbing,LIU Wencan,CAO Yijia,et al.Electrical power virtual storage policy for stimulating distributed generation in regulated markets[J].Proceedings of the CSEE,2014,34(19):3141-3147.
[7]PIPATTANASOMPORN M,WILLINGHAM M,RAHMAN S.Implications of on-site distributed generation for commercial/industrial facilities[J].IEEETransactions on Power Systems,2005,20(1):206-212.
[8]IQBAL F,SIDDIQUI A S.Optimal configuration analysis for a campus microgrid-a case study[J].Protection and Control of Modern Power Systems,2017,2(2):245-256.DOI:10.1186/s41601-017-0055-z.
[9]黎灿兵,刘玙,曹一家,等.低碳发电调度与节能发电调度的一致性评估[J].中国电机工程学报,2011,31(31):94-101.LI Canbing,LIU Yu,CAO Yijia,et al.Consistency evaluation of low-carbon generation dispatching and energy-saving generation dispatching[J].Proceedings of the CSEE,2011,31(31):94-101.
[10]张世翔,邵慧壮.含分布式电源的配电网优化研究[J].中国电力,2017,47(5):88-91.ZHANG Shixiang,SHAO Huizhuang.Optimization research of distribution network considering distributed generation[J].Electric Power,2017,47(5):88-91.
[11]孙建梅,陈璐.基于LCOE的分布式光伏发电并网效益分析[J].中国电力,2018,51(3):88-93.SUN Jianmei,CHEN Lu.Analysis on grid-connected benefit of distributed photovoltaic power generation based on LCOE model[J].Electric Power,2018,51(3):88-93.
[12]张曦,张宁,龙飞,等.分布式电源接入配网对其静态电压稳定性影响多角度研究[J].电力系统保护与控制,2017,45(6):120-125.ZHANG Xi,ZHANG Ning,LONG Fei,et al.Research of the impacts on static voltage stability of distribution networks with distributed generation from different aspects[J].Power System Protection and Control,2017,45(6):120-125.
[13]ZOU K,AGALGAONKAR A P,MUTTAQI K M,et al.Distribution system planning with incorporating DGreactive capability and system uncertainties[J].IEEETransactions on Sustainable Energy,2012,3(1):112-123.
[14]高亮,郎陈杰,夏能弘.分布式电源并网条件下配电网继电保护方案设计[J].电力系统保护与控制,2017,45(18):143-149.GAO Liang,LANG Chenjie,XIA Nenghong.Design of distribution network with DG[J].Power System Protection and Control,2017,45(18):143-149.
[15]HE J,LIU L,DING F,et al.A new coordinated backup protection scheme for distribution network containing distributed generation[J].Protection and Control of Modern Power Systems,2017,2(2):102-110.DOI:10.1186/s41601-017-0043-3.
[16]于建成,迟福建,徐科,等.分布式电源接入对电网的影响分析[J].电力系统及其自动化学报,2012,24(1):138-141.YU Jiancheng,CHI Fujian,XU Ke,et al.Analysis of the impact of distributed generation on power grid[J].Proceedings of the CSU-EPSA,2012,24(1):138-141.
[17]国家电网公司.分布式电源接入电网技术规定:Q/GDW 480-2010[S].北京:中国电力出版社,2010.The State Grid Corporation of China.Technical rule for distributed resources connected to power grid:Q/GDW480-2010[S].Beijing:China Electric Power Press,2010.
[18]连欣乐,吴政球,赵柯宇,等.计及短路电流约束的分布式电源准入容量的计算[J].电力科学与技术学报,2008,23(1):50-55.LIAN Xinle,WU Zhengqiu,ZHAO Keyu,et al.Maximum penetration capacity calculation for distributed generation taking into account fault current constraint[J].Journal of Electric Power Science and Technology,2008,23(1):50-55.
[19]夏成军,崔弘,王强,等.考虑静态安全约束的分布式电源准入容量计算[J].电网技术,2009,33(16):96-100.XIA Chengjun,CUI Hong,WANG Qiang,et al.Penetration capacity calculation for distributed generation[J].Power System Technology,2009,33(16):96-100.
[20]胡美玉,胡志坚,史梦梦.基于改进粒子群优化算法的DG准入容量与优化布置[J].电力建设,2014,35(12):111-115.HU Meiyu,HU Zhijian,SHI Mengmeng.Penetration level and optimize layout of distributed generation based on improved particle swarm optimization algorithm[J].Electric Power Construction,2014,35(12):111-115.
[21]黄巍,吴俊勇,鲁思棋,等.电压偏差和谐波约束下配网光伏最大渗透率评估[J].电力系统保护与控制,2016,44(6):49-55.HUANG Wei,WU Junyong,LU Siqi,et al.Maximum photovoltaic penetration considering voltage deviation and harmonic constraints[J].Power System Protection and Control,2016,44(6):49-55.
[22]刘健,同向前,潘忠美,等.考虑过电压因素时分布式光伏电源的准入容量[J].电力系统保护与控制,2014,42(6):45-51.LIU Jian,TONG Xiangqian,PAN Zhongmei,et al.The maximum power of distributed PV generation according to over-voltage in distribution network[J].Power System Protection and Control,2014,42(6):45-51.
[23]王志群,朱守真,周双喜,等.分布式发电对配电网电压分布的影响[J].电力系统自动化,2004,28(16):57-60.WANG Zhiqun,ZHU Shouzhen,ZHOU Shuangxi,et al.The influence of distributed generation on voltage distribution of distribution network[J].Automation of Electric Power Systems,2004,28(16):57-60.
[24]文升,顾洁,程浩忠,等.分布式电源的准入容量与优化布置的实用方法[J].电力自动化设备,2012,32(10):109-114.WEN Sheng,GU Jie,CHENG Haozhong,et al.The access capacity of distributed power supply and the practical method of optimal layout[J].Electric Power Automation Equipment,2012,32(10):109-114.
[25]刘蓓,汪沨.配电网供电可靠性的分布式电源选址与定容[J].电源技术,2016,40(2):410-412.LIU Bei,WANG Feng.Siting and sizing of distributed generation based on distribution system reliability[J].Power Source Technology,2016,40(2):410-412.
[26]苏小玲,韩民晓,赵正奎,等.配电网中分布式电源最大准入容量分析[J].电网技术,2012,36(10):87-92.SU Xiaoling,HAN Minxiao,ZHAO Zhengkui,et al.Research on maximum capacity of grid-connected distributed generation in distribution network[J].Power System Technology,2012,36(10):87-92.
[27]刘磊,江辉,彭建春.分布式发电对配电网网损和电压分布的影响[J].计算机仿真,2010,27(4):279-283.LIU Lei,JIANG Hui,PENG Jianchun.Impact of distributed generation on distribution system power loss and voltage profile[J].Computer Simulation,2010,27(4):279-283.