考虑电能交互的冷热电多微网系统日前优化经济调度
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摘要
多个冷热电联供型微网接入同一区域配电网,形成以配电网为核心的冷热电联供型多微网系统。当冷热电联供型多微网间通过联络线进行电能交互时,给传统的多微网系统优化调度问题带来了挑战。在分析典型冷热电联供型微网供能结构的基础上,研究供用储设备间的冷热电能流动关系和设备的数学模型,建立考虑微网间电能交互的冷热电联供型多微网系统优化经济调度模型。通过天津中新生态城算例,分析各个冷热电联供型微网中设备出力和冷热电负荷平衡情况,与多微网间不存在电能交互时的优化调度进行经济成本、CO_2排放量和各微网与电网交易电功率值的比较,与传统冷热电联供系统"以热定电"和"以电定热"运行方式下多微网系统的总运行成本进行对比,验证所提模型的经济性、环保性和有效性,并对微网间交易电价的制定做进一步研究。
As a large number of microgrids with combined cooling,heating and power(CCHP)are integrated into the same distribution network,it forms CCHP multi-microgrid system in which the distribution network is the core.When there is power interaction among multi-microgrid,it brings great challenges to the traditional optimized economic dispatch.On the basis of energy supply structure of CCHP microgrid,the cooling,heating and power energy flow among devices and equipment models are analyzed.The optimized economic dispatch model of CCHP multi-microgrid system considering the power interaction is also established.Through the example of Zhongxin district in Tianjin municipality,China,the output power of equipment and the balance of cooling,heating and power load in every CCHP microgrid are analyzed.Then it compares with economic dispatch of CCHP multi-microgrid without power interaction,about economy cost,CO_2 emission and power interaction with the grid.Finally,the whole system operation cost is compared with that of the conventional CCHP system in following the thermal load(FTL)and following the electric load(FEL)operation mode,which confirms that the model proposed is effective,economic and environment-friendly.The relationship between the total cost of multi-microgrid system and electricity transaction price among microgrids is further studied.
As a large number of microgrids with combined cooling,heating and power(CCHP)are integrated into the same distribution network,it forms CCHP multi-microgrid system in which the distribution network is the core.When there is power interaction among multi-microgrid,it brings great challenges to the traditional optimized economic dispatch.On the basis of energy supply structure of CCHP microgrid,the cooling,heating and power energy flow among devices and equipment models are analyzed.The optimized economic dispatch model of CCHP multi-microgrid system considering the power interaction is also established.Through the example of Zhongxin district in Tianjin municipality,China,the output power of equipment and the balance of cooling,heating and power load in every CCHP microgrid are analyzed.Then it compares with economic dispatch of CCHP multi-microgrid without power interaction,about economy cost,CO_2 emission and power interaction with the grid.Finally,the whole system operation cost is compared with that of the conventional CCHP system in following the thermal load(FTL)and following the electric load(FEL)operation mode,which confirms that the model proposed is effective,economic and environment-friendly.The relationship between the total cost of multi-microgrid system and electricity transaction price among microgrids is further studied.
引文
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[22]ZHANG Ning,KANG Chongqing,XIA Qing,et al.A convex model of risk-based unit commitment for day-ahead market clearing considering wind power uncertainty[J].IEEETransactions on Power Systems,2015,30(3):1582-1592.
[23]LIU T Q,JIANG D L.Economic operation of microgrid based on operation mode optimization of energy storage unit[J].Power System Technology,2012,2(11):2087-2089.
[24]徐敏姣,徐青山,蒋菱.基于太阳能空调的冷热电联供系统多目标优化运行研究[J].现代电力,2017,34(3):60-68.XU Minjiao,XU Qingshan,JIANG Ling.Research on multiobjective optimized operation of combined cooling heating and power system with solar air conditioning[J].Modern Electric Power,2017,34(3):60-68.
[25]魏大钧,孙波,赵峰,等.小型生物质沼气冷热电联供系统多目标优化设计与运行分析[J].电力系统自动化,2015,39(12):7-12.DOI:10.7500/AEPS20141027001.WEI Dajun,SUN Bo,ZHAO Feng,et al.Multi-objective optimization design and operation analysis of a small biomass biogas combined cooling heating and power system[J].Automation of Electric Power Systems,2015,39(12):7-12.DOI:10.7500/AEPS20141027001.
[26]刘星月,吴红斌.太阳能综合利用的冷热电联供系统控制策略和运行优化[J].电力系统自动化,2015,39(12):1-6.DOI:10.7500/AEPS20140626004.LIU Xingyue,WU Hongbin.A control strategy and operation optimization of combined cooling heating and power system considering solar comprehensive utilization[J].Automation of Electric Power Systems,2015,39(12):1-6.DOI:10.7500/AEPS20140626004.
[2]GU Wei,LU Shuai,WU Zhi,et al.Residential CCHPmicrogrid with load aggregator:operation mode,pricing strategy,and optimal dispatch[J].Applied Energy,2017,205:173-186.
[3]贾宏杰,王丹,徐宪东,等.区域综合能源系统若干问题研究[J].电力系统自动化,2015,39(7):198-207.DOI:10.7500/AEPS20141009011.JIA Hongjie,WANG Dan,XU Xiandong,et al.Research on some key problems related to integrated energy systems[J].Automation of Electric Power Systems,2015,39(7):198-207.DOI:10.7500/AEPS20141009011.
[4]吴雄,王秀丽,王建学,等.微网经济调度问题的混合整数规划方法[J].中国电机工程学报,2013,33(28):1-8.WU Xiong,WANG Xiuli,WANG Jianxue,et al.Economic generation scheduling of a microgrid using mixed integer programming[J].Proceedings of the CSEE,2013,33(28):1-8.
[5]孙浩,张磊,许海林,等.微电网日内调度计划的混合整数规划模型[J].电力系统自动化,2015,39(19):21-27.DOI:10.7500/AEPS20141117011.SUN Hao,ZHANG Lei,XU Hailin,et al.Mixed integer programming model for microgrid intra-day scheduling[J].Automation of Electric Power Systems,2015,39(19):21-27.DOI:10.7500/AEPS20141117011.
[6]谢敏,吉祥,柯少佳,等.基于目标级联分析法的多微网主动配电系统自治优化经济调度[J].中国电机工程学报,2017,37(17):4911-4921.XIE Min,JI Xiang,KE Shaojia,et al.Autonomous optimized economic dispatch of active distribution power system with multi-microgrids based on analytical target cascading theory[J].Proceedings of the CSEE,2017,37(17):4911-4921.
[7]GHADIMI P,KARA S,KORNFELD B.The optimal selection of on-site CHP systems through integrated sizing and operational strategy[J].Applied Energy,2014,126:38-46.
[8]管霖,陈鹏,唐宗顺,等.考虑冷热电存储的区域综合能源站优化设计方法[J].电网技术,2016,40(10):2934-2941.GUAN Lin,CHEN Peng,TANG Zongshun,et al.Integrated energy station design considering cold and heat storage[J].Power System Technology,2016,40(10):2934-2941.
[9]GU Wei,TANG Yiyuan,PENG Shuyong,et al.Optimal configuration and analysis of combined cooling,heating,and power microgrid with thermal storage tank under uncertainty[J].Journal of Renewable and Sustainable Energy,2015,7(1):2125-2141.
[10]魏大钧,张承慧,孙波.计及变负荷特性的小型冷热电联供系统经济优化运行研究[J].电网技术,2015,39(11):3240-3246.WEI Dajun,ZHANG Chenghui,SUN Bo.Economic optimal operation of micro combined cooling heating and power system considering off-design performance[J].Power System Technology,2015,39(11):3240-3246.
[11]王成山,洪博文,郭力,等.冷热电联供微网优化调度通用建模方法[J].中国电机工程学报,2013,33(31):26-33.WANG Chengshan,HONG Bowen,GUO Li,et al.A general modeling method for optimal dispatch of combined cooling,heating and power microgrid[J].Proceedings of the CSEE,2013,33(31):26-33.
[12]荆有印,白鹤,张建良.太阳能冷热电联供系统的多目标优化设计与运行策略分析[J].中国电机工程学报,2012,32(20):82-87.JING Youyin,BAI He,ZHANG Jianliang.Multi-objective optimization design and operation strategy analysis of a solar combined cooling,heating and power system[J].Proceedings of the CSEE,2012,32(20):82-87.
[13]熊焰,吴杰康,王强,等.风光气储互补发电的冷热电联供优化协调模型及求解方法[J].中国电机工程学报,2015,35(14):3616-3625.XIONG Yan,WU Jiekang,WANG Qiang,et al.An optimization coordination model and solution for combined cooling,heating and electric power systems with complimentary generation of wind,PV,gas and energy storage[J].Proceedings of the CSEE,2015,35(14):3616-3625.
[14]徐青山,曾艾东,王凯,等.基于Hessian内点法的微型能源网日前冷热电联供经济优化调度[J].电网技术,2016,40(6):1657-1665.XU Qingshan,ZENG Aidong,WANG Kai,et al.Day-ahead optimized economic dispatching for combined cooling,heating and power in micro energy-grid based on Hessian interior point method[J].Power System Technology,2016,40(6):1657-1665.
[15]GU W,WANG Z,WU Z,et al.An online optimal dispatch schedule for CCHP microgrids based on model predictive control[J].IEEE Transactions on Smart Grid,2017,8(5):2332-2342.
[16]徐青山,李淋,盛业宏,等.冷热电联供型多微网主动配电系统日前优化经济调度[J].电网技术,2018,42(6):1726-1734.XU Qingshan,LI Lin,SHENG Yehong,et al.Day-ahead optimized economic dispatch of active distribution power system with combined cooling,heating and power-based microgrids[J].Power System Technology,2018,42(6):1726-1734.
[17]王守相,吴志佳,袁霜晨,等.区域多微网系统的多目标优化调度方法[J].电力系统及其自动化学报,2017,29(5):14-20.WANG Shouxiang,WU Zhijia,YUAN Shuangchen,et al.Method of multi-objective optimal dispatching for regional multi-microgrid system[J].Proceedings of the CSU-EPSA,2017,29(5):14-20.
[18]王守相,吴志佳,庄剑.考虑微网间功率交互和微源出力协调的冷热电联供型区域多微网优化调度模型[J].中国电机工程学报,2017,37(24):7185-7194.WANG Shouxiang,WU Zhijia,ZHUANG Jian.Optimal dispatching model of CCHP type regional multi-microgrids considering interactive power exchange among microgrids and output coordination among micro-sources[J].Proceedings of the CSEE,2017,37(24):7185-7194.
[19]CARVALHO M,MARIA SERRA L,ANGEL LOZANO M.Optimal synthesis of tri-generation systems subject to environmental constraints[J].Energy,2011,36(6):3779-3790.
[20]杨永标,于建成,李奕杰,等.含光伏和蓄能的冷热电联供系统调峰调蓄优化调度[J].电力系统自动化,2017,41(6):6-12.DOI:10.7500/AEPS20160610002.YANG Yongbiao,YU Jiancheng,LI Yijie,et al.Optimal load leveling dispatch of CCHP incorporating photovoltaic and storage[J].Automation of Electric Power Systems,2017,41(6):6-12.DOI:10.7500/AEPS20160610002.
[21]刘涤尘,马恒瑞,王波,等.含冷热电联供及储能的区域综合能源系统运行优化[J].电力系统自动化,2018,42(4):113-120.DOI:10.7500/AEPS20170512002.LIU Dichen,MA Hengrui,WANG Bo,et al.Operation optimization of regional integrated energy system with CCHPand energy storage system[J].Automation of Electric Power Systems,2018,42(4):113-120.DOI:10.7500/AEPS20170512002.
[22]ZHANG Ning,KANG Chongqing,XIA Qing,et al.A convex model of risk-based unit commitment for day-ahead market clearing considering wind power uncertainty[J].IEEETransactions on Power Systems,2015,30(3):1582-1592.
[23]LIU T Q,JIANG D L.Economic operation of microgrid based on operation mode optimization of energy storage unit[J].Power System Technology,2012,2(11):2087-2089.
[24]徐敏姣,徐青山,蒋菱.基于太阳能空调的冷热电联供系统多目标优化运行研究[J].现代电力,2017,34(3):60-68.XU Minjiao,XU Qingshan,JIANG Ling.Research on multiobjective optimized operation of combined cooling heating and power system with solar air conditioning[J].Modern Electric Power,2017,34(3):60-68.
[25]魏大钧,孙波,赵峰,等.小型生物质沼气冷热电联供系统多目标优化设计与运行分析[J].电力系统自动化,2015,39(12):7-12.DOI:10.7500/AEPS20141027001.WEI Dajun,SUN Bo,ZHAO Feng,et al.Multi-objective optimization design and operation analysis of a small biomass biogas combined cooling heating and power system[J].Automation of Electric Power Systems,2015,39(12):7-12.DOI:10.7500/AEPS20141027001.
[26]刘星月,吴红斌.太阳能综合利用的冷热电联供系统控制策略和运行优化[J].电力系统自动化,2015,39(12):1-6.DOI:10.7500/AEPS20140626004.LIU Xingyue,WU Hongbin.A control strategy and operation optimization of combined cooling heating and power system considering solar comprehensive utilization[J].Automation of Electric Power Systems,2015,39(12):1-6.DOI:10.7500/AEPS20140626004.