含不完全量测的分布式光伏发电集群电压协调控制
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摘要
针对高渗透率分布式光伏接入引起的电压越限问题以及当前配电网量测不足的现状,该文提出一种基于不完全量测数据的集群电压协调控制策略。基于群内关键节点的量测数据和群间通信数据,各集群首先通过网络简化获得含完全量测信息的简化网络,然后通过集群电压协调控制实现群内网络损耗、光伏发电损失和下游集群电压越限量的加权最小目标。所提集群电压协调控制方法能够发挥上游集群对下游集群的无功调压能力,降低个别集群为解决群内过电压而造成的分布式光伏发电损失。该文采用安徽省金寨县的一条实际10kV线路和调整的IEEE123节点案例验证所提方法的有效性和可行性。
For solving the voltage violation problem caused by high penetration of distributed photovoltaics(PVs)in distribution networks with inadequate measurement, a coordinated cluster voltage control strategy based on incomplete measurement data was proposed. Based on pivotal measurement data and inter-cluster communication, each cluster firstly obtains a simplified network with complete measurement information through network simplification, and then implements coordinated voltage control with adjacent clusters to realize the weighted minimization of intra-cluster network losses, PV generation losses and voltage violation amounts of downstream clusters. The proposed coordinated cluster voltage control method can fully utilize the reactive power resources of upstream clusters to solve the voltage violation of downstream clusters, which can reduce the generation losses of distributed PVs caused by solving overvoltage problem in few clusters. The effectiveness and feasibility of the proposed method were demonstrated via simulation tests on a real 10 kV feeder in Jinzhai, Anhui province of China and modified IEEE 123-bus system.
For solving the voltage violation problem caused by high penetration of distributed photovoltaics(PVs)in distribution networks with inadequate measurement, a coordinated cluster voltage control strategy based on incomplete measurement data was proposed. Based on pivotal measurement data and inter-cluster communication, each cluster firstly obtains a simplified network with complete measurement information through network simplification, and then implements coordinated voltage control with adjacent clusters to realize the weighted minimization of intra-cluster network losses, PV generation losses and voltage violation amounts of downstream clusters. The proposed coordinated cluster voltage control method can fully utilize the reactive power resources of upstream clusters to solve the voltage violation of downstream clusters, which can reduce the generation losses of distributed PVs caused by solving overvoltage problem in few clusters. The effectiveness and feasibility of the proposed method were demonstrated via simulation tests on a real 10 kV feeder in Jinzhai, Anhui province of China and modified IEEE 123-bus system.
引文
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[2]王颖,文福拴,赵波,等.高密度分布式光伏接入下电压越限问题的分析与对策[J].中国电机工程学报,2016,36(5):1200-1206.Wang Ying,Wen Fushuan,Zhao Bo,et al.Analysis and countermeasures of voltage violation problems caused by high-density distributed photovoltaics[J].Proceedings of the CSEE,2016,36(5):1200-1206(in Chinese).
[3]Haque M M,Wolfs P.A review of high PV penetrations in LV distribution networks:present status,impacts and mitigation measures[J].Renewable and Sustainable Energy Reviews,2016,62:1195-1208.
[4]Lin Chenhui,Wu Wenchuan,Zhang Boming,et al.Decentralized reactive power optimization method for Transmission and distribution networks accommodating large-scale DG integration[J].IEEE Transactions on Sustainable Energy,2017,8(1):363-373.
[5]柴园园,郭力,王成山,等.含高渗透率光伏的配电网分布式电压控制[J].电网技术,2018,42(3):738-746.Chai Yuanyuan,Guo Li,Wang Chengshan,et al.Distributed voltage control in distribution networks with high penetration of PV[J].Power System Technology,2018,42(3):738-746(in Chinese).
[6]肖传亮,赵波,周金辉,等.配电网中基于网络分区的高比例分布式光伏集群电压控制[J].电力系统自动化,2017,41(21):147-155.Xiao Chuanliang,Zhao Bo,Zhou Jinhui,et al.Network partition based cluster voltage control of high-penetration distributed photovoltaic systems in distribution networks[J].Automation of Electric Power Systems,2017,41(21):147-155(in Chinese).
[7]Abessi A,Vahidinasab V,Ghazizadeh M S.Centralized support distributed voltage control by using end-users as reactive power support[J].IEEE Transactions on Smart Grid,2016,7(1):178-188.
[8]Antoniadou-Plytaria K E,Kouveliotis-Lysikatos I N,Georgilakis P S,et al.Distributed and decentralized voltage control of smart distribution networks:models,methods,and future research[J].IEEE Transactions on Smart Grid,2017,8(6):2999-3008.
[9]Zhao Bo,Xu Zhicheng,Xu Chen,et al.Network partition-based zonal voltage control for distribution networks with distributed PV systems[J].IEEETransactions on Smart Grid,2018,9(5):4087-4098.
[10]Zheng Weiye,Wu Wenchuan,Zhang Boming,et al.Afully distributed reactive power optimization and control method for active distribution networks[J].IEEETransactions on Smart Grid,2016,7(2):1021-1033.
[11]Dall’Anese E,Zhu Hao,Giannakis G B.Distributed optimal power flow for smart microgrids[J].IEEETransactions on Smart Grid,2013,4(3):1464-1475.
[12]?ulc P,Backhaus S,Chertkov M.Optimal distributed control of reactive power via the alternating direction method of multipliers[J].IEEE Transactions on Energy Conversion,2014,29(4):968-977.
[13]Dall'Anese E,Dhople S V,Johnson B B,et al.Decentralized optimal dispatch of photovoltaic inverters in residential distribution systems[J].IEEE Transactions on Energy Conversion,2014,29(4):957-967.
[14]Chai Yuanyuan,Guo Li,Wang Chengshan,et al.Network partition and voltage coordination control for distribution networks with high penetration of distributed PV units[J].IEEE Transactions on Power System,2018,33(3):3396-3407.
[15]Baran M,Wu F F.Optimal sizing of capacitors placed on a radial distribution system[J].IEEE Transactions on Power Delivery,1989,4(1):735-743.
[16]Li Na,Chen Lijun,Low S H.Exact convex relaxation of OPF for radial networks using branch flow model[C]//Proceedings of 2012 IEEE third International Conference on Smart Grid Communications(Smart Grid Comm).Tainan,China:IEEE,2012.
[17]Abdelouadoud S Y,Girard R,Neirac P F,et al.Optimal power flow of a distribution system based on increasingly tight cutting planes added to a second order cone relaxation[J].International Journal of Electrical Power&Energy Systems,2015,69:9-17.
[18]Baran M E,Wu F F.Network reconfiguration in distribution systems for loss reduction and load balancing[J].IEEE Transactions on Power Delivery,1989,4(2):1401-1407.
[19]IBM.IBM CPLEX Optimizer[EB/OL].2019,https://www.ibm.com/analytics/cplex-optimizer.
[20]IEEE PES AMPS DSAS Test Feeder Working Group[EB/OL].(2019-04-19).http://sites.ieee.org/pes-testfeeders/resources.
[21]Robbins B A,Hadjicostis C N,Domínguez-García A D.A two-stage distributed architecture for voltage control in power distribution systems[J].IEEE Transactions on Power Systems,2013,28(2):1470-1482.
[22]IPOPT[EB/OL].2019,https://coin-or.github.io/Ipopt.