微电网中光-储系统不同组网方式经济性分析
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摘要
微电网因其发电形式多样、运行方式灵活、能够有效发挥分布式电源效能而受到广泛关注。针对微电网中光储系统的两种不同组网方式,分别分析了光储联合系统和光储一体系统在不同工况下的潮流分布,并提出相应的运行经济性计算模型。应用全寿命周期成本分析方法,比较两种光储系统组网方式的经济性。以某微电网实验室6节点系统和IEEE-33节点测试系统为算例,验证了不同系统条件下两种光储系统组网方式的经济性差异,可以为最优组网方式的选择提供依据。
Due to its various power sources, flexible operation modes and ability of making full use of distributed energy resources, microgrid has received broad attention. Focusing on the two different network modes of photovoltaic-battery system(PVBS), the power flow distribution of photovoltaic-battery hybrid system(PVBHS) and photovoltaic-battery integrated system(PVBIS) under different operation conditions are analyzed separately and the corresponding operational economy calculation model is proposed. Using the life cycle cost(LCC) analysis method, the economy of PVBHS and PVBIS is compared. A 6-bus microgrid lab system and the IEEE 33-bus test system are taken as the study case. Results show that the economy of the two network modes are various under different system conditions. The results can give evidence for choosing the optimal network mode.
Due to its various power sources, flexible operation modes and ability of making full use of distributed energy resources, microgrid has received broad attention. Focusing on the two different network modes of photovoltaic-battery system(PVBS), the power flow distribution of photovoltaic-battery hybrid system(PVBHS) and photovoltaic-battery integrated system(PVBIS) under different operation conditions are analyzed separately and the corresponding operational economy calculation model is proposed. Using the life cycle cost(LCC) analysis method, the economy of PVBHS and PVBIS is compared. A 6-bus microgrid lab system and the IEEE 33-bus test system are taken as the study case. Results show that the economy of the two network modes are various under different system conditions. The results can give evidence for choosing the optimal network mode.
引文
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[3]严陆光,夏训诚,周凤起,等.我国大规模可再生能源基地与技术的发展研究[J].电工电能新技术,2007,26(1):24-33.Yan Luguang,Xia Xuncheng,Zhou Fengqi,et al.A development study for Chinese large scale renewable energy source base and technology(cont.)[J].Advanced Technology of Electrical Engineering&Energy,2007,26(1):24-33.
[4]刘吉臻.大规模新能源电力安全高效利用基础问题[J].中国电机工程学报,2013,33(16):1-8.Liu Jizhen.Basic issues of the utilization of large-scale renewable power with high security and efficiency[J].Proceedings of the CSEE,2013,33(16):1-8.
[5]王守相,韩亮.DG出力不确定性对配电网影响力分析的复仿射数学方法[J].中国电机工程学报,2014,34(31):5507-5515.Wang S S,Han L.Complex Affine Arithmetic Based Method for the Analyses of DG's Uncertainty Influence on Distribution Network[J].Proceedings of the CSEE,2014,34(31):5507-5515.
[6]杨新法,苏剑,吕志鹏,等.微电网技术综述[J].中国电机工程学报,2014,34(1):57-70.Yang Xinfa,Su Jian,LüZhipeng,et al.Overview on Micro-grid Technology[J].Proceedings of the CSEE,2014,34(1):57-70.
[7]刘方,杨秀,时珊珊,等.考虑不确定因素下含充换储一体化电站的微网能量优化[J].电网技术,2015,39(3):669-676.Liu F,Yang X,Shi S S,et al.Economic operation of microgrid containing charging-swapping-storage integrated station under uncertain factors of wind farm and photovoltaic generation[J].Power System Technology,2015,39(3):669-676.
[8]徐丙垠,李天友,薛永端.智能配电网与配电自动化[J].电力系统自动化,2009,33(17):38-41.Xu Bingyin,Li Tianyou,Xue Yongduan.Smart distribution grid and distribution automation[J].Automation of Electric Power Systems,2009,33(17):38-41.
[9]孙伟卿,刘通,陈顺风,等.考虑电动汽车换电站负荷特性的电网管理效益分析[J].电网与清洁能源,2016,32(2):127-132.Sun W Q,Liu T,Chen S F,et al.Analysis on Load Characteristic and Management Benefits of Electric Vehicle Battery Swapping Station[J].Power System&Clean Energy,2016,32(2):127-132.
[10]Mancarella P.MES(multi-energy systems):An overview of concepts and evaluation models[J].Energy(S0360-5442),2014,65(2):1-17.
[11]Corzine K A.Energy packets enabling the energy internet[C]//Power Systems Conference.IEEE,2014:1-5.
[12]杨忠亮.多元混合储能一体化电站在城市电网的应用[C]//2013年中国电机工程学会年会论文集,2013:1-6.Yang Zhongliang.Application of multi-element hybrid energy storage integrated power station in urban power grid[C].//2013 Annual Conference Proceedings of the China Society for Electrical Engineering,2013:1-6.
[13]罗潇,李征.光储互补并离网一体逆变器控制策略[J].电子设计工程,2015,23(19):132-135,139.Luo Xiao,Li Zheng.A control strategy of grid-connected and stand-alone converter integrated with photovoltaic and battery[J].Electronic Design Engineering,2015,23(19):132-135,139.
[14]Agarwal V,Uthaichana K,Decarlo R A,et al.Development and Validation of a Battery Model Useful for Discharging and Charging Power Control and Lifetime Estimation[J].IEEE Transactions on Energy Conversion(S0885-8969),2010,25(3):821-835.
[15]National Renewable Energy Laboratory(NREI).Energymodeling softwarefor hybrid renewable energy systems[EB/OL].(2016-05-27)[2011-12-01]http:www.homerenergy,com/.
[16]Zimmerman R D,Murillo-Sanchez C E,Gan D Q.MATPOWER[EB/OL].(2016-05-27)[2016-05-04]http://www.pserc.cornell.edu/matpower/.