考虑可靠性与故障后负荷响应的主动配电网供电能力评估
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摘要
针对传统供电能力评估中难以同时解决既避免单纯以负荷高峰时刻全网N-1准则为基础又细致计及分布式电源、储能和负荷需求响应影响等问题,提出了考虑可靠性柔性需求与故障后负荷响应的主动配电网供电能力评估方法。首先,结合出力不确定性与用户差异化的响应能力,对主动配电网中的分布式电源、储能与可响应负荷等基本元素进行建模;其次,构建了以最大供电能力为目标、以可靠性需求和故障后负荷响应经济性为主要约束的主动配电网供电能力评估模型;继而,发展了考虑分布式光伏、蓄电池以及需求响应的主动配电网可靠性评估准序贯蒙特卡洛模拟法,并提出了基于遗传算法的供电能力评估模型优化求解方法;最后,通过算例验证了所提方法可有效挖掘主动配电网供电能力,提升资产利用效率。
The traditional method of power supply capability(PSC)evaluation is simply based on the network-wide N-1 criterion at peak load time and fails to consider the impact of distributed generator(DG),energy storage and load response.To solve this problem,this paper proposes a new PSC evaluation method of active distribution network(ADN)considering flexible reliability demand and post-fault load response.Firstly,combined with the uncertainty of DG output and the difference of users' response capability,the DG,energy storage and responsive load in ADN are modeled.Secondly,a PSC evaluation model is constructed with the objective of maximizing the PSC of ADN under the constraints of reliability demand and load response economy.Thirdly,aquasi-sequential Monte Carlo simulation method is developed for reliability assessment of ADN considering distributed photovoltaic,battery and demand response,and a solving method of PSC evaluation model based on genetic algorithm is proposed.Finally,the results of a typical ADN case study show that the proposed method can effectively tap PSC and improve the efficiency of asset utilization.
The traditional method of power supply capability(PSC)evaluation is simply based on the network-wide N-1 criterion at peak load time and fails to consider the impact of distributed generator(DG),energy storage and load response.To solve this problem,this paper proposes a new PSC evaluation method of active distribution network(ADN)considering flexible reliability demand and post-fault load response.Firstly,combined with the uncertainty of DG output and the difference of users' response capability,the DG,energy storage and responsive load in ADN are modeled.Secondly,a PSC evaluation model is constructed with the objective of maximizing the PSC of ADN under the constraints of reliability demand and load response economy.Thirdly,aquasi-sequential Monte Carlo simulation method is developed for reliability assessment of ADN considering distributed photovoltaic,battery and demand response,and a solving method of PSC evaluation model based on genetic algorithm is proposed.Finally,the results of a typical ADN case study show that the proposed method can effectively tap PSC and improve the efficiency of asset utilization.
引文
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[13]李振坤,岳美,胡荣,等.计及分布式电源与可平移负荷的变电站优化规划[J].中国电机工程学报,2016,36(18):4883-4893.LI Zhenkun,YUE Mei,HU Rong,et al.Optimal planning of substation considering distributed generation and shiftable loads[J].Proceedings of the CSEE,2016,36(18):4883-4893.
[14]葛少云,王浩鸣,王源山,等.含分布式风光蓄的配电系统可靠性评估[J].电力系统自动化,2012,36(5):16-23.GE Shaoyun,WANG Haoming,WANG Yuanshan,et al.Reliability evaluation of distribution system including distributed wind turbines,photovoltaic arrays and batteries[J].Automation of Electric Power Systems,2012,36(5):16-23.
[15]李璐,肖湘宁,陈鹏伟.改进光伏模型及其在微网可靠性评估中的应用[J].电工电能新技术,2016,35(11):65-71.LI Lu,XIAO Xiangning,CHEN Pengwei.Improved photovoltaic model and its application in reliability evaluation of microgrid[J].Advanced Technology of Electrical Engineering and Energy,2016,35(11):65-71.
[16]张钦,王锡凡,王建学,等.电力市场下需求响应研究综述[J].电力系统自动化,2008,32(3):97-106.ZHANG Qin,WANG Xifan,WANG Jianxue,et al.Survey of demand response research in deregulated electricity markets[J].Automation of Electric Power Systems,2008,32(3):97-106.
[17]FAHRIOGLU M,ALVARADO F L.Designing incentive compatible contracts for effective demand management[J].IEEE Transactions on Power Systems,2000,15(4):1255-1260.
[18]贾志伟,黄文艺,王玉忠.计及联络容量约束的配电网供电能力模型[J].电力建设,2013,34(9):67-70.JIA Zhiwei,HUANG Wenyi,WANG Yuzhong.Model for power supply capability of power distribution network considering constraints of tie-line capacity[J].Electric Power Construction,2013,34(9):67-70.
[19]郑海峰,黄泽琦,刘洪,等.考虑负荷时序特性的含主变配电网可靠性评估[J].电力系统及其自动化学报,2018,30(4):144-150.ZHENG Haifeng,HUANG Zeqi,LIU Hong,et al.Reliability assessment on distribution network with main transformer considering load timing characteristics[J].Proceedings of the CSU-EPSA,2018,30(4):144-150.
[20]黄宗南,何岚岚,舒洲.切削用量遗传优化中的约束条件处理[J].机械设计与研究,2008,24(4):93-97.HUANG Zongnan,HE Lanlan,SHU Zhou.Constraints handling in cutting optimization by genetic algorithm[J].Machine Design&Research,2008,24(4):93-97.
[2]ZHANG Shenxi,CHENG Haozhong,ZHANG Libo,et al.Probabilistic evaluation of available load supply capability for distribution system[J].IEEE Transactions on Power Systems,2013,28(3):3215-3225.
[3]叶莘,韦钢,马雷鹏,等.含分布式电源的直流配电网供电能力评估[J].电力系统自动化,2017,41(9):58-64.DOI:10.7500/AEPS20161017009.YE Shen,WEI Gang,MA Leipeng,et al.Power supply capability evaluation of DC distribution network with distributed generators[J].Automation of Electric Power Systems,2017,41(9):58-64.DOI:10.7500/AEPS20161017009.
[4]LUO Fengzhang,WANG Chengshan,XIAO Jun,et al.Rapid evaluation method for power supply capability of urban distribution system based on N-1contingency analysis of maintransformers[J].International Journal of Electrical Power&Energy Systems,2010,32(10):1063-1068.
[5]肖峻,祖国强,贺琪博,等.馈线联络对配电网最大供电能力的作用机理[J].电力系统自动化,2015,39(8):38-44.XIAO Jun,ZU Guoqiang,HE Qibo,et al.Influence mechanism of feeder links on total supply capability for distribution networks[J].Automation of Electric Power Systems,2015,39(8):38-44.
[6]肖峻,刚发运,黄仁乐,等.柔性配电网的最大供电能力模型[J].电力系统自动化,2017,41(5):30-38.DOI:10.7500/AEPS20160713007.XIAO Jun,GANG Fayun,HUANG Renle,et al.Total supply capability model for flexible distribution network[J].Automation of Electric Power Systems,2017,41(5):30-38.DOI:10.7500/AEPS20160713007.
[7]高亚静,朱静,程华新,等.计及不确定性因素基于多场景的主动配电系统短期供电能力评估[J].中国电机工程学报,2016,36(22):6076-6085.GAO Yajing,ZHU Jing,CHENG Huaxin,et al.Evaluation on the short-term power supply capability of active distribution system based on multiple scenarios considering uncertainties[J].Proceedings of the CSEE,2016,36(22):6076-6085.
[8]刘洪,李吉峰,张家安,等.考虑可靠性的中压配电系统供电能力评估[J].电力系统自动化,2017,41(12):154-160.DOI:10.7500/AEPS20160802006.LIU Hong,LI Jifeng,ZHANG Jiaan,et al.Power supply capability evaluation of medium voltage distribution system considering reliability[J].Automation of Electric Power Systems,2017,41(12):154-160.DOI:10.7500/AEPS20160802006.
[9]FARRET F A,SIMOES M G.Integration of alternative sources of energy[M].Hoboken,USA:Wiley-IEEE Press,2006.
[10]NIKMEHR N,RAVADANEGH S N.Reliability evaluation of multi-microgrids considering optimal operation of small scale energy zones under load-generation uncertainties[J].International Journal of Electrical Power&Energy Systems,2016,78:80-87.
[11]ZAKARIA Z,MASATO O,TOMONOBU S,et al.Optimal voltage control using inverters interfaced with PV systems considering forecast error in a distribution system[J].IEEETransactions on Sustainable Energy,2014,5(2):682-690.
[12]郭创新,张理,张金江,等.风光互补综合发电系统可靠性分析[J].电力系统保护与控制,2013,41(1):102-108.GUO Chuangxin,ZHANG Li,ZHANG Jinjiang,et al.Reliability analysis of wind and photovoltaic integrated generating system[J].Power System Protection and Control,2013,41(1):102-108.
[13]李振坤,岳美,胡荣,等.计及分布式电源与可平移负荷的变电站优化规划[J].中国电机工程学报,2016,36(18):4883-4893.LI Zhenkun,YUE Mei,HU Rong,et al.Optimal planning of substation considering distributed generation and shiftable loads[J].Proceedings of the CSEE,2016,36(18):4883-4893.
[14]葛少云,王浩鸣,王源山,等.含分布式风光蓄的配电系统可靠性评估[J].电力系统自动化,2012,36(5):16-23.GE Shaoyun,WANG Haoming,WANG Yuanshan,et al.Reliability evaluation of distribution system including distributed wind turbines,photovoltaic arrays and batteries[J].Automation of Electric Power Systems,2012,36(5):16-23.
[15]李璐,肖湘宁,陈鹏伟.改进光伏模型及其在微网可靠性评估中的应用[J].电工电能新技术,2016,35(11):65-71.LI Lu,XIAO Xiangning,CHEN Pengwei.Improved photovoltaic model and its application in reliability evaluation of microgrid[J].Advanced Technology of Electrical Engineering and Energy,2016,35(11):65-71.
[16]张钦,王锡凡,王建学,等.电力市场下需求响应研究综述[J].电力系统自动化,2008,32(3):97-106.ZHANG Qin,WANG Xifan,WANG Jianxue,et al.Survey of demand response research in deregulated electricity markets[J].Automation of Electric Power Systems,2008,32(3):97-106.
[17]FAHRIOGLU M,ALVARADO F L.Designing incentive compatible contracts for effective demand management[J].IEEE Transactions on Power Systems,2000,15(4):1255-1260.
[18]贾志伟,黄文艺,王玉忠.计及联络容量约束的配电网供电能力模型[J].电力建设,2013,34(9):67-70.JIA Zhiwei,HUANG Wenyi,WANG Yuzhong.Model for power supply capability of power distribution network considering constraints of tie-line capacity[J].Electric Power Construction,2013,34(9):67-70.
[19]郑海峰,黄泽琦,刘洪,等.考虑负荷时序特性的含主变配电网可靠性评估[J].电力系统及其自动化学报,2018,30(4):144-150.ZHENG Haifeng,HUANG Zeqi,LIU Hong,et al.Reliability assessment on distribution network with main transformer considering load timing characteristics[J].Proceedings of the CSU-EPSA,2018,30(4):144-150.
[20]黄宗南,何岚岚,舒洲.切削用量遗传优化中的约束条件处理[J].机械设计与研究,2008,24(4):93-97.HUANG Zongnan,HE Lanlan,SHU Zhou.Constraints handling in cutting optimization by genetic algorithm[J].Machine Design&Research,2008,24(4):93-97.