徐全,袁智勇,于力,林跃欢,史训涛,白浩

• 1:南方电网科学研究院有限责任公司

摘要(Abstract)：

分布式电源与新型电力电子设备在配电层面的普及将使得未来系统中直流环节大幅增加,改变有源配电系统的网络结构与运行方式,交直流混联系统的安全与经济运行成为新的问题。本文提出了一种基于智能软开关的交直流混联配电网多目标运行优化方法,利用智能软开关实现交直流系统的柔性互联,由于多优化目标存在互相制约可能,采用NSGA-Ⅱ算法求解帕累托前沿并通过评价分析确定最优运行策略,以提高交直流混联系统运行经济性并改善电压运行水平。最后,在改进的台湾配电网算例上,对本文方法的正确性与有效性进行验证,通过调节智能软开关的运行策略,交直流混联配电网运行经济性显著提高,缓解了电压越限情况。

关键词(KeyWords)： 智能软开关;交直流混联;有源配电网;NSGA-Ⅱ;多目标优化

Abstract:

Keywords:

基金项目(Foundation): 南方电网公司科技资助项目(ZBKJXM20180137)

作者(Author): 徐全,袁智勇,于力,林跃欢,史训涛,白浩

DOI: 10.19635/j.cnki.csu-epsa.000470

参考文献(References)：

• [1]Li Peng,Xu Duo,Zhou Zeyuan,et al.Stochastic optimal operation of microgrid based on chaotic binary particle swarm optimization[J].IEEE Trans on Smart Grid,2016,7(1):66-73.
• [2]原凯，孙充勃，冀浩然，等（Yuan Kai,Sun Chongbo,Ji Haoran,et al）.基于凸差规划的有源配电网电压无功协调控制方法（Coordinated control method for voltage and reactive power of active distribution network based on difference-of-convex programming)[J].电力系统及其自动化学报（Proceedings of the CSU-EPSA),2018,30(9):108-113,150.
• [3]王成山，李鹏（Wang Chengshan,Li Peng）.分布式发电、微网与智能配电网的发展与挑战（Development and challenges of distributed generation,micro-grid and smart distribution system)[J].电力系统自动化（Automation of Electric Power Systems),2010,34(2):10-14,23.
• [4]马骏超，江全元，余鹏，等（Ma Junchao,Jiang Quanyuan,Yu Peng,et al）.直流配电网能量优化控制技术综述（Survey on energy optimized control technology in dc distribution network)[J].电力系统自动化（Automation of Electric Power Systems),2013,37(24):89-96.
• [5]Barr J,Majumder R.Integration of distributed generation in the Volt/VAR management system for active distribution networks[J].IEEE Trans on Smart Grid,2015,6(2):576-586.
• [6]宋强，赵彪，刘文华，等（Song Qiang,Zhao Biao,Liu Wenhua,et al）.智能直流配电网研究综述（An overview of research on smart DC distribution power network)[J].中国电机工程学报（Proceedings of the CSEE),2013,33(25):9-19.
• [7]孙充勃，李鹏，王成山，等（Sun Chongbo,Li Peng,Wang Chengshan,et al）.含多直流环节的混合结构有源配电网潮流计算方法（An AC-DC hybrid power flow algorithm for active distribution network)[J].电力系统自动化（Automation of Electric Power Systems),2015,39(21):59-65.
• [8]苗丹，刘天琪，王顺亮，等（Miao Dan,Liu Tianqi,Wang Shunliang,et al）.含柔性直流电网的交直流混联系统潮流优化控制（Optimization control of AC-DC hybrid system with flexbile DC grid)[J].电力系统自动化（Automation of Electric Power Systems),2017,41(12):70-76.
• [9]符杨，张智泉，李振坤（Fu Yang,Zhang Zhiquan,Li Zhenkun）.基于二阶段鲁棒优化模型的混合交直流配电网无功电压控制策略研究（Research on volt/var control strategy of hybrid ac/dc distribution network based on twostage robust optimization model)[J].中国电机工程学报（Proceedings of the CSEE),2019,39(16):4764-4774.
• [10]王成山，宋关羽，李鹏，等（Wang Chengshan,Song Guanyu,Li Peng,et al）.基于智能软开关的智能配电网柔性互联技术及展望（Research and prospect for soft open point based flexible interconnection technology for smart distribution network)[J].电力系统自动化（Automation of Electric Power Systems),2016,40(22):168-175.
• [11]Long Chao,Wu Jianzhong,Thomas L,et al.Optimal operation of soft open points in medium voltage electrical distribution networks with distributed generation[J].Applied Energy,2016,184:427-437.
• [12]孙充勃，原凯，李鹏，等（Sun Chongbo,Yuan Kai,Li Peng,et al）.基于SOP的多电压等级混联配电网运行二阶锥规划方法（Second-order cone programming method for multi-voltage grade hybrid distribution network operation based on SOP)[J].电网技术（Power System Technology),2019,43(5):1599-1605.
• [13]Ji Haoran,Wang Chengshan,Li Peng,et al.An enhanced SOCP-based method for feeder load balancing using the multi-terminal soft open point in active distribution networks[J].Applied Energy,2018,208:986-995.
• [14]Bai Linquan,Jiang Tao,Li Fangxing,et al.Distributed energy storage planning in soft open point based active distribution networks incorporating network reconfiguration and DG reactive power capability[J].Applied Energy,2018,208:1082-1091.
• [15]Li Peng,Ji Haoran,Wang Chengshan,et al.Coordinated control method of voltage and reactive power for active distribution networks based on soft open point[J].IEEETrans on Sustainable Energy,2017,8(4):1430-1442.
• [16]Ji Haoran,Wang Chengshan,Li Peng,et al.A centralizedbased method to determine the local voltage control strategies of distributed generator operation in active distribution networks[J].Applied Energy,2018,228:2024-2036.
• [17]Qi Qi,Wu Jianzhong,Long Chao.Multi-objective operation optimization of an electrical distribution network with soft open point[J].Applied Energy,2017,208:734-744.
• [18]Deb K,Pratap A,Agarwal S,et al.A fast and elitist multiobjective genetic algorithm:NSGA-II[J].IEEE Trans on Evolutionary Computation,2002,6(2):182-197.
• [19]Li Zhicheng,Tang Zhijun,Chao Wujie,et al.Multi-objective supply restoration in active distribution networks with soft open points[C]//2nd IEEE Conference on Energy Internet and Energy System Integration.Beijing,China,2018.
• [20]Gao Shuang,Jia Hongjie,Marnay C.Techno-economic evaluation of mixed AC and DC power distribution network for integrating large-scale photovoltaic power generation[J].IEEE Access,2019,7:105019-105029.
• [21]Ahmadi M,Lotfy M,Howlader A,et al.Centralised multiobjective integration of wind farm and battery energy storage system in real-distribution network considering environmental,technical and economic perspective[J].IETGeneration,Transmission&Distribution,2019,19(11):5207-5217.
• [22]孙充勃，原凯，李鹏，等（Sun Chongbo,Yuan Kai,Li Peng,et al）.基于SNOP的配电网运行优化及分析（Asecond-order cone programming method for hybrid multiple voltage level distribution networks based on soft open points)[J].电网技术（Power System Technology),2019,43(5):1599-1605.
• [23]赵金利，李雨薇，李鹏，等（Zhao Jinli,Li Yuwei,Li Peng,et al）.基于二阶锥规划的有源配电网SNOP电压无功时序控制方法（Sequential voltage regulation of soft normally open point in active distribution network based on second-order cone programming)[J].高电压技术（High Voltage Engineering),2016,42(7):2134-2141.
• [24]Baran M,Wu F.Network reconfiguration in distribution systems for loss reduction and load balancing[J].IEEETrans on Power Delivery,1989,4(2):1401-1407.
• [25]Zhang Zhiyuan,Wang Xujie.Optimal reactive optimization of distribution network with wind turbines based on improved NSGA-II[C]//China International Conference on Electricity Distribution.Tianjin,China,2018:2056-2060.