计及电转气耦合的电-气互联系统机组组合线性模型研究
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摘要
针对电-气互联系统,考虑电转气技术和燃气轮机的双向耦合,研究其机组组合问题。以全系统综合运行成本最低为目标,考虑电力系统和天然气系统多种安全约束,建立电-气互联系统机组组合模型,并对其进行线性化得到线性模型。选取某6节点电力系统与10节点天然气系统耦合的电-气互联系统为例,分别计算非线性模型与线性化模型并比较其求解效率。同时分析了计及电转气和不计及电转气两种场景下系统运行成本和运行状态。仿真结果表明线性模型提高了电-气互联系统机组组合求解效率,电转气的应用也有助于提高电-气混联系统的经济性。
This paper presents unit commitment model for integrated electric and natural-gas systems considering two-way coupling of power-to-gas and gas turbine. Minimizing the sum of integrated energy systems operation costs becomes the objective function. The security transmission constraints of the natural-gas and electricity networks are considered simultaneously. Linearization method is adopted to get the linear model. The test case consists of the 6-node electric network, the 10-node gas network and the coupling elements. The nonlinear model and the linearized model are calculated respectively and their solving efficiency is compared. The two scenarios with or without power-to-gas on system operational states and cost are analyzed simultaneously. Test results show that the linear model improves the solving efficiency of the unit commitment of the integrated electric and natural-gas systems. And the power-to-gas could effectively improve the operation economy and reliability of integrated electric and natural-gas systems.
This paper presents unit commitment model for integrated electric and natural-gas systems considering two-way coupling of power-to-gas and gas turbine. Minimizing the sum of integrated energy systems operation costs becomes the objective function. The security transmission constraints of the natural-gas and electricity networks are considered simultaneously. Linearization method is adopted to get the linear model. The test case consists of the 6-node electric network, the 10-node gas network and the coupling elements. The nonlinear model and the linearized model are calculated respectively and their solving efficiency is compared. The two scenarios with or without power-to-gas on system operational states and cost are analyzed simultaneously. Test results show that the linear model improves the solving efficiency of the unit commitment of the integrated electric and natural-gas systems. And the power-to-gas could effectively improve the operation economy and reliability of integrated electric and natural-gas systems.
引文
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[16]CONG L,CHANGHYEOK L,MOHAMMAD S.Look ahead robust scheduling of wind-thermal system with considering natural gas congestion[J].IEEE Transactions on Power Systems,2015,30(1):544-545.
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[18]LIU C,SHAHIDEHPOUR M,WANG J.Coordinated scheduling of electricity and natural gas infrastructures with a transient model for natural gas flow[J].Chaos An Interdisciplinary Journal of Nonlinear Science,2011,21(2):531.
[19]URBINA M,LI Z.A combined model for analyzing the interdependency of electrical and gas systems[C]//200739th North American Power Symposium,September 30-October 2,2007,Las Cruces,NM,USA:468-472.
[20]MARTIN A,M?LLER M,MORITZ S.Mixed integer models for the stationary case of gas network optimization[J].Mathematical Programming,2006,105(2-3):563-582.
[21]CORREA-POSADA C M,SANCHEZ-MARTIN P.Gas network optimization:a comparison of piecewise linear models,2014[EB/OL].http://www.optimization-online.org/DB_HTML/2014/10/4580.html
[22]SEBASTIAN S,THOMAS G,MARTIN R,et al.Power to gas:technological overview,systems analysis and economic assessment for a case study in Germany[J].International Journal of Hydrogen Energy,2015,40(12):4285-4294.
[23]MANUEL G,JONATHAN L,FRIEDEMANN M,et al.Renewable power-to-gas:a technological and economic review[J].Renewable Energy,2016,85:1371-1390.
[24]STEPHEN C,PIERLUIGI A.Integrated modeling and assessment of the operational impact of power-to-gas(P2G)on electrical and gas transmission networks[J].IEEETransactions on Sustainable Energy,2015,6(4):1234-1244.
[25]VANDEWALLE J,BRUNINX K,D’HAESELEER W.Effects of large-scale power to gas conversion on the power,gas and carbon sectors and their interactions[J].Energy Conversion and Management,2015,94:28-39.
[26]张强.考虑机组组合和电网安全约束的电力系统水火协调[D].南宁:广西大学,2012.ZHANG Qiang.Water and fire coordination of power system considering unit combination and power network security constraints[D].Nanning:Guangxi University,2012.
[27]CORREA-POSADA C M,SáNCHEZ-MARTíN P.Integrated power and natural gas model for energy adequacy in short-term operation[J].IEEE Transactions on Power Systems,2015,30(6):3347-3355.
[28]AN S,LI Q,GEDRA T W.Natural gas and electricity optimal power flow[C]//Transmission and Distribution Conference and Exposition,September 7-12,2003,Dallas,TX,USA:138-143.
[2]白学祥,曾鸣,李源非,等.区域能源供给网络热电协同规划模型与算法[J].电力系统保护与控制,2017,45(5):65-72.BAI Xuexiang,ZENG Ming,LI Yuanfei,et al.The model and algorithm of thermoelectric collaborative planning of regional energy supply network[J].Power System Protection and Control,2017,45(5):65-72.
[3]许汉平,李姚旺,苗世洪,等.考虑可再生能源消纳效益的电力系统“源-荷-储”协调互动优化调度策略[J].电力系统保护与控制,2017,45(17):18-25.XU Hanping,LI Yaowang,MIAO Shihong,et al.The"source-load-storage"coordinated and interactive optimal scheduling strategy of power system considering the efficiency of renewable energy consumption[J].Power System Protection and Control,2017,45(17):18-25.
[4]钟迪,李启明,周贤,等.多能互补能源综合利用关键技术研究现状及发展趋势[J].热力发电,2018,47(2):1-5.ZHONG Di,LI Qiming,ZHOU Xian,et al.Research status and development trends for key technologies of multi-energy complementary comprehensive utilization system[J].Thermal Power Generation,2018,47(2):1-5.
[5]胡康,陈群.电-热综合能源系统整体能效及灵活性改造方案分析[J].热力发电,2018,47(5):14-21.HU Kang,CHEN Qun.Overall energy efficiency and flexibility retrofit scheme analysis of heat-power integrated energy system[J].Thermal Power Generation,2018,47(5):14-21.
[6]张立地,窦迅,王俊,等.综合能源背景下的配电网规划研究[J].供用电,2018,35(4):37-45.ZHANG Lidi,DOU Xun,WANG Jun,et al.Review of distribution network planning in the context of integrated energy[J].Distribution&Utilization,2018,35(4):37-45.
[7]李扬,闫爱梅,田传波.区域综合能源管控系统设计与实现[J].供用电,2019,36(3):8-13.LI Yang,YAN Aimei,TIAN Chuanbo.Design and implementtation of regional integrated energy management and control system[J].Distribution&Utilization,2019,36(3):8-13.
[8]王雪,陈昕.城市能源变革下的城市智慧能源系统顶层设计研究[J].中国电力,2018,51(8):85-91.WANG Xue,CHEN Xin.Top-level design of urban intelligent energy systems under urban energy revolution[J].Electric Power,2018,51(8):85-91.
[9]王仕俊,平常,薛国斌.考虑共享储能的社区综合能源系统协同优化研究[J].中国电力,2018,51(8):77-84.WANG Shijun,PING Chang,XUE Guobin.Synergic optimization of community energy internet considering the shared energy storage[J].Electric Power,2018,51(8):77-84.
[10]郑展,张勇军.电-气-热一体化混合能源系统研究评述与展望[J].广东电力,2018,31(9):105-117.ZHENG Zhan,ZHANG Yongjun.Research comment and prospect of electricity-natural gas heat integrated hybrid energy system[J].Guangdong Electric Power,2018,31(9):105-117.
[11]王伟亮,王丹,贾宏杰,等.考虑天然气网络状态的电力-天然气区域综合能源系统稳态分析[J].中国电机工程学报,2017,37(5):1293-1304.WANG Weiliang,WANG Dan,JIA Hongjie,et al.Steady state analysis of electricity-gas regional integrated energy system with consideration of NGS network status[J].Proceedings of the CSEE,2017,37(5):1293-1304.
[12]CHEN Sheng,WEI Zhinong,SUN Guoqiang,et al.Multi-linear probabilistic energy flow analysis of integrated electrical and natural-gas systems[J].IEEETransactions on Power Systems,2017,32(3):1970-1979.
[13]CONG L,MOHAMMAD S,YONG F,et al.Securityconstrained unit commitment with natural gas transmission constraints[J].IEEE Transactions on Power Systems,2009,24(3):1523-1536.
[14]SAEED K,LEI W,MOHAMMAD S.Stochastic midterm coordination of hydro and natural gas flexibilities for wind energy integration[J].IEEE Transactions on Sustainable Energy,2014,5(4):1070-1079.
[15]CORREA-POSADA C M,SáNCHEZ-MARTíN P.Stochastic contingency analysis for the unit commitment with natural gas constraints[C]//IEEE Grenoble PowerTech Conference,June 16-20,2013,Grenoble,France:1-5.
[16]CONG L,CHANGHYEOK L,MOHAMMAD S.Look ahead robust scheduling of wind-thermal system with considering natural gas congestion[J].IEEE Transactions on Power Systems,2015,30(1):544-545.
[17]CORREA-POSADA C M,SáNCHEZ-MARTíN P.Security-constrained unit commitment with dynamic gas constraints[C]//2015 IEEE Power&Energy Society General Meeting,July 26-30,2015,Denver,CO,USA:1-5.
[18]LIU C,SHAHIDEHPOUR M,WANG J.Coordinated scheduling of electricity and natural gas infrastructures with a transient model for natural gas flow[J].Chaos An Interdisciplinary Journal of Nonlinear Science,2011,21(2):531.
[19]URBINA M,LI Z.A combined model for analyzing the interdependency of electrical and gas systems[C]//200739th North American Power Symposium,September 30-October 2,2007,Las Cruces,NM,USA:468-472.
[20]MARTIN A,M?LLER M,MORITZ S.Mixed integer models for the stationary case of gas network optimization[J].Mathematical Programming,2006,105(2-3):563-582.
[21]CORREA-POSADA C M,SANCHEZ-MARTIN P.Gas network optimization:a comparison of piecewise linear models,2014[EB/OL].http://www.optimization-online.org/DB_HTML/2014/10/4580.html
[22]SEBASTIAN S,THOMAS G,MARTIN R,et al.Power to gas:technological overview,systems analysis and economic assessment for a case study in Germany[J].International Journal of Hydrogen Energy,2015,40(12):4285-4294.
[23]MANUEL G,JONATHAN L,FRIEDEMANN M,et al.Renewable power-to-gas:a technological and economic review[J].Renewable Energy,2016,85:1371-1390.
[24]STEPHEN C,PIERLUIGI A.Integrated modeling and assessment of the operational impact of power-to-gas(P2G)on electrical and gas transmission networks[J].IEEETransactions on Sustainable Energy,2015,6(4):1234-1244.
[25]VANDEWALLE J,BRUNINX K,D’HAESELEER W.Effects of large-scale power to gas conversion on the power,gas and carbon sectors and their interactions[J].Energy Conversion and Management,2015,94:28-39.
[26]张强.考虑机组组合和电网安全约束的电力系统水火协调[D].南宁:广西大学,2012.ZHANG Qiang.Water and fire coordination of power system considering unit combination and power network security constraints[D].Nanning:Guangxi University,2012.
[27]CORREA-POSADA C M,SáNCHEZ-MARTíN P.Integrated power and natural gas model for energy adequacy in short-term operation[J].IEEE Transactions on Power Systems,2015,30(6):3347-3355.
[28]AN S,LI Q,GEDRA T W.Natural gas and electricity optimal power flow[C]//Transmission and Distribution Conference and Exposition,September 7-12,2003,Dallas,TX,USA:138-143.