考虑可再生能源随机性的微电网经济性与稳定性协调优化策略
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摘要
当前含高渗透率可再生能源的微电网稳定运行问题日趋严重。通过场景生成与削减方法对可再生能源的随机性进行建模和求解;基于下垂控制理论,利用时间乘以误差绝对值积分指标实现微电网稳定性的快速判断;提出一种考虑可再生能源随机性的微电网经济性与稳定性协调优化策略。MATLAB/Simulink仿真结果验证了所提模型与方法的正确性与有效性。
Because of the high penetration rate of renewable energy,the stable operation of microgrid is seriously affected. The method of scenarios generation and reduction is applied to build and solve the model of renewable energy randomness. Based on the droop control theory,ITAE index is used to realize the fast judgment of microgrid stability. A strategy considering the randomness of renewable energy sources is proposed to coordinate the economy optimization and stability optimization of microgrid. Results of MATLAB/Simulink simulation verify the correctness and effectiveness of the proposed model and method.
Because of the high penetration rate of renewable energy,the stable operation of microgrid is seriously affected. The method of scenarios generation and reduction is applied to build and solve the model of renewable energy randomness. Based on the droop control theory,ITAE index is used to realize the fast judgment of microgrid stability. A strategy considering the randomness of renewable energy sources is proposed to coordinate the economy optimization and stability optimization of microgrid. Results of MATLAB/Simulink simulation verify the correctness and effectiveness of the proposed model and method.
引文
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[16]李洋,张辉,苏冰,等.含多微源的微电网离网运行小信号稳定性分析[J].电力自动化设备,2015,35(1):159-164.LI Yang,ZHANG Hui,SU Bing,et al.Small-signal stability analysis of islanded microgrid with microsources[J].Electric Power Automation Equipment,2015,35(1):159-164.
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[19]艾欣,许佳佳.基于互动调度的微网与配电网协调运行模式研究[J].电力系统保护与控制,2013,41(1):143-149.AI Xin,XU Jiajia.Study on the microgrid and distribution network cooperation model based on interactive scheduling[J].Power System Protection and Control,2013,41(1):143-149.
[20]DEEPYAMAN M,AYAN A,MITHUN C.Tuning PID and PIλDδcontrollers using the integral time absolute error criteria[C]∥4th International Conference on Information and Automation for Sustainability.Colombo,Sri Lanka:[s.n.],2008:457-462.
[2]刘春阳,王秀丽,刘世民,等.计及蓄电池使用寿命的微电网经济调度模型[J].电力自动化设备,2015,35(10):29-36.LIU Chunyang,WANG Xiuli,LIU Shimin,et al.Economic dispatch model considering battery lifetime for microgrid[J].Electric Power Automation Equipment,2015,35(10):29-36.
[3]陈健,王成山,赵波,等.考虑储能系统特性的独立微电网系统经济运行优化[J].电力系统自动化,2012,36(20):25-31.CHEN Jian,WANG Chengshan,ZHAO Bo,et al.Economic operation optimization of a stand-alone microgrid system considering characteristics of energy storage system[J].Automation of Electric Power Systems,2012,36(20):25-31.
[4]童小娇,尹坤,刘亚娟,等.包含可控负荷的微电网经济调度[J].电力自动化设备,2015,35(10):21-28.TONG Xiaojiao,YIN Kun,LIU Yajuan,et al.Economic dispatch for microgrid with controllable loads[J].Electric Power Automation Equipment,2015,35(10):21-28.
[5]郑竞宏,李兴旺,王燕廷,等.微电网切换至孤岛运行时的小信号稳定性分析[J].电力系统自动化,2012,36(15):25-32.ZHENG Jinghong,LI Xingwang,WANG Yanting,et al.Smallsignal stability analysis of a microgrid switching to islanded mode[J].Automation of Electric Power Systems,2012,36(15):25-32.
[6]洪博文,郭力,王成山,等.微电网多目标动态优化模型与方法[J].电力自动化设备,2013,33(3):100-107.HONG Bowen,GUO Li,WANG Chengshan,et al.Model and method of dynamic multi-objective optimal dispatch for microgrid[J].Electric Power Automation Equipment,2013,33(3):100-107.
[7]陈洁,杨秀,朱兰,等.微网多目标经济调度优化[J].中国电机工程学报,2013,33(19):57-66.CHEN Jie,YANG Xiu,ZHU Lan,et al.Microgrid multi-objective economic dispatch optimization[J].Proceedings of the CSEE,2013,33(19):57-66.
[8]张建华,苏玲,陈勇,等.微网的能量管理及其控制策略[J].电网技术,2011,35(7):24-28.ZHANG Jianhua,SU Ling,CHEN Yong,et al.Energy management of microgrid and its control strategy[J].Power System Technology,2011,35(7):24-28.
[9]向月,刘俊勇,魏震波,等.考虑可再生能源出力不确定性的微电网能量优化鲁棒模型[J].中国电机工程学报,2014,34(19):3063-3072.XIANG Yue,LIU Junyong,WEI Zhenbo,et al.Robust model of microgrid energy optimization with uncertain renewable energy sources[J].Proceedings of the CSEE,2014,34(19):3063-3072.
[10]孙元章,吴俊,李国杰,等.基于风速预测和随机规划的含风电场电力系统动态经济调度[J].中国电机工程学报,2009,29(4):41-47.SUN Yuanzhang,WU Jun,LI Guojie,et al.Dynamic economic dispatch considering wind power penetration based on wind speed forecasting and stochastic programming[J].Proceedings of the CSEE,2009,29(4):41-47.
[11]柳丹,李强,袁晓冬.考虑随机性的微网能量优化调度模型[J].电力系统保护与控制,2014,42(11):112-117.LIU Dan,LI Qiang,YUAN Xiaodong.Economic and optimal dispatching of power microgrid with renewable energy resources based on stochastic optimization[J].Power System Protection and Control,2014,42(11):112-117.
[12]言大伟,韦钢,胡吟,等.可靠性与经济性相协调的微电网能量优化[J].电力系统自动化,2012,36(8):18-23,51.YAN Dawei,WEI Gang,HU Yin,et al.Microgrid energy optimization with coordination of reliability and economy[J].Automation of Electric Power Systems,2012,36(8):18-23,51.
[13]TUSHAR M H K,ASSI C,MAIER M.Distributed real-time electricity allocation mechanism for large residential microgrid[J].IEEE Transactions on Smart Grid,2015,6(3):1353-1363.
[14]孟建辉,石新春,王毅,等.改善微电网频率稳定性的分布式逆变电源控制策略[J].电工技术学报,2015,30(4):70-79.MENG Jianhui,SHI Xinchun,WANG Yi,et al.Control strategy of DER inverter for improving frequency stability of microgrid[J].Transactions of China Electrotechnical Society,2015,30(4):70-79.
[15]马添翼,金新民,黄杏.含多变流器的微电网建模与稳定性分析[J].电力系统自动化,2013,37(6):12-17.MA Tianyi,JIN Xinmin,HUANG Xing.Modeling and stability analysis of microgrid with multiple converters[J].Automation of Electric Power Systems,2013,37(6):12-17.
[16]李洋,张辉,苏冰,等.含多微源的微电网离网运行小信号稳定性分析[J].电力自动化设备,2015,35(1):159-164.LI Yang,ZHANG Hui,SU Bing,et al.Small-signal stability analysis of islanded microgrid with microsources[J].Electric Power Automation Equipment,2015,35(1):159-164.
[17]THAKUR D,MITHULANANTHAN N.Influence of constant speed wind turbine generator on power system oscillation[J].Electric Power Components&Systems,2009,37(5):478-494.
[18]SHARMA K C,JAIN P,BHAKAR R.Wind power scenario generation and reduction in stochastic programming framework[J].Electric Power Components&Systems,2013,41(3):271-285.
[19]艾欣,许佳佳.基于互动调度的微网与配电网协调运行模式研究[J].电力系统保护与控制,2013,41(1):143-149.AI Xin,XU Jiajia.Study on the microgrid and distribution network cooperation model based on interactive scheduling[J].Power System Protection and Control,2013,41(1):143-149.
[20]DEEPYAMAN M,AYAN A,MITHUN C.Tuning PID and PIλDδcontrollers using the integral time absolute error criteria[C]∥4th International Conference on Information and Automation for Sustainability.Colombo,Sri Lanka:[s.n.],2008:457-462.