含多端SOP的智能配电网运行优化及示范应用
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摘要
分布式电源的高渗透率接入加剧了智能配电网的功率和电压波动,多端柔性软开关是一种替代传统馈线联络开关的新型柔性电力电子装置,能够快速、精准地控制潮流分布以实现更大范围内馈线间功率的灵活交换。本文分析了多端柔性软开关的基本原理,建立了多端柔性软开关的数学优化模型。以降低网络损耗、减小电压偏差以及均衡线路负载为目标函数,建立了基于多端柔性软开关的智能配电网运行优化模型,所用方法减小了分布式电源高渗透率引起的配电网功率和电压波动。基于天津北辰示范区实际配电网,分析验证了多端柔性软开关对智能配电网运行优化的提升效果。
The high penetration of distributed generations(DGs)exacerbates the fluctuations of power and voltage in smart distribution network. As a novel flexible power electronic device,multi-terminal soft open point(SOP)replacesthe traditional interconnection switch of feeders,which can fast and accurately control the power flow distribution to ex-tend the adjustment range of flexible power switch between different feeders. In this paper,a mathematical optimizationmodel of multi-terminal SOP is established after the analysis of the basic principle of multi-terminal SOP. The reductionof network loss and voltage deviation as well as the balance of line loads are set as the objective function,thus an opera-tion and optimization model for smart distribution network is established based on multi-terminal SOP,which reducesthe fluctuations of power and voltage in distribution network due to the high penetration of DGs. These technologies havebeen applied to a pilot project in the Beichen District of Tianjin,which verifies the improvement effect of multi-terminal SOP on the operation and optimization of smart distribution network.
The high penetration of distributed generations(DGs)exacerbates the fluctuations of power and voltage in smart distribution network. As a novel flexible power electronic device,multi-terminal soft open point(SOP)replacesthe traditional interconnection switch of feeders,which can fast and accurately control the power flow distribution to ex-tend the adjustment range of flexible power switch between different feeders. In this paper,a mathematical optimizationmodel of multi-terminal SOP is established after the analysis of the basic principle of multi-terminal SOP. The reductionof network loss and voltage deviation as well as the balance of line loads are set as the objective function,thus an opera-tion and optimization model for smart distribution network is established based on multi-terminal SOP,which reducesthe fluctuations of power and voltage in distribution network due to the high penetration of DGs. These technologies havebeen applied to a pilot project in the Beichen District of Tianjin,which verifies the improvement effect of multi-terminal SOP on the operation and optimization of smart distribution network.
引文
[1]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,the 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.
[2]肖峻,刚发运,黄仁乐,等(Xiao Jun,Gang Fayun,Huang Renle,et al).柔性配电网的最大供电能力模型(Total supply capability model for flexible distribution network)[J].电力系统自动化(Automation of Electric Power Systems),2017,41(5):30-38.
[3]王博,肖峻,周济,等(Wang Bo,Xiao Jun,Zhou Ji,et al).主动配电网中分布式电源和微网的运行域(Dispatchable region of distributed generators and microgrids in distribution systems)[J].电网技术(Power System Technology),2017,41(2):363-370.
[4]王成山,宋关羽,李鹏,等(Wang Chengshan,Song Guanyu,Li Peng,et al).考虑分布式电源运行特性的有源配电网智能软开关SOP规划方法(Optimal configuration of soft open point for active distribution network considering the characteristics of distributed generation)[J].中国电机工程学报(Proceedings of the CSEE),2017,37(7):1889-1896.
[5] 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]. IEEE Trans on Sustainable Energy,2017,8(4):1430-1442.
[6]冷华,童莹,李欣然,等(Leng Hua,Tong Ying,Li Xinran,et al).配电网运行状态综合评估方法研究(Comprehensive evaluation method research of the operation state in distributed network)[J].电力系统保护与控制(Power System Protection and Control),2017,45(1):53-59.
[7]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.
[8]肖峻,蒋迅,黄仁乐,等(Xiao Jun,Jiang Xun,Huang Renle,et al).城市电网分区柔性互联装置的定容方法(Capacity dimensioning method of partitioned flexible interconnection device in urban power network)[J].电力系统自动化(Automation of Electric Power Systems),2018,42(2):99-105.
[9]娄铖伟,张筱慧,丛鹏伟,等(Lou Chengwei,Zhang Xiaohui,Cong Pengwei,et al).含柔性软开关的有源配电网故障恢复策略(Service restoration strategy of active distribution network with soft open points)[J].电力系统自动化(Automation of Electric Power Systems),2018,42(1):23-31.
[10] Wang Chengshan,Song Guanyu,Li Peng,et al. Optimal siting and sizing of soft open points in active electrical distribution networks[J]. Applied Energy,2017,189:301-309.
[11] Bloemink J M,Green T C. Benefits of distribution-level power electronics for supporting distributed generation growth[J]. IEEE Trans on Power Delivery,2013,28(2):911-919.
[12] Long Cao,Wu Jianzhong,Thomas Lee,et al. Optimal opera-tion of soft open points in medium voltage electrical distribution networks with distributed generation[J]. Applied Energy,2016,184:427-437.
[13] Cao Wanyu,Wu Jianzhong,Jenkins N,et al. Operating principle of soft open points for electrical distribution network operation[J]. Applied Energy,2016,164:245-257.
[14] Konstantelos I,Giannelos S,Strbac G. Strategic valuation of smart grid technology options in distribution networks[J]. IEEE Trans on Power Systems,2017,32(2):1293-1303.
[15]李鹏,张培深,王成山,等(Li Peng,Zhang Peishen,Wang Chengshan,et al).基于智能软开关与市场机制的有源配电网阻塞管理方法(Congestion management method for active distribution networks based on soft open point and market mechanism)[J].电力系统自动化(Automation of Electric Power Systems),2017,41(20):9-16.
[16] 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,2017,208:986-995.
[17]王成山,宋关羽,李鹏,等(Wang Chengshan,Song Guanyu,Li Peng,et al).一种联络开关和智能软开关并存的配电网运行时序优化方法(A hybrid optimization method for distribution network operation with SNOP and tie switch)[J].中国电机工程学报(Proceedings of the CSEE),2016,36(9):2315-2321.
[18]邱晓燕,沙熠,宁雪姣,等(Qiu Xiaoyan,Sha Yi,NingXuejiao,et al).计及智能电网多不确定性的多目标储能优化(Multi-objective optimization of stored energy considering multi-uncertainty in smart grid)[J].高电压技术(High Voltage Engineering),2016,42(9):2715-2722.
[19]李晨,涂光瑜,罗毅(Li Chen,Tu Guangyu,Luo Yi).考虑区域安全评估指标的配电网无功优化(Reactive power optimization for distribution network considering index of area security assessment)[J].高电压技术(High Voltage Engineering),2007,33(9):134-137.
[20]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.
[21]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),http://kns.cnki.net/kcms/detail/12.1251.tm.20180813.1709.010.html.
[2]肖峻,刚发运,黄仁乐,等(Xiao Jun,Gang Fayun,Huang Renle,et al).柔性配电网的最大供电能力模型(Total supply capability model for flexible distribution network)[J].电力系统自动化(Automation of Electric Power Systems),2017,41(5):30-38.
[3]王博,肖峻,周济,等(Wang Bo,Xiao Jun,Zhou Ji,et al).主动配电网中分布式电源和微网的运行域(Dispatchable region of distributed generators and microgrids in distribution systems)[J].电网技术(Power System Technology),2017,41(2):363-370.
[4]王成山,宋关羽,李鹏,等(Wang Chengshan,Song Guanyu,Li Peng,et al).考虑分布式电源运行特性的有源配电网智能软开关SOP规划方法(Optimal configuration of soft open point for active distribution network considering the characteristics of distributed generation)[J].中国电机工程学报(Proceedings of the CSEE),2017,37(7):1889-1896.
[5] 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]. IEEE Trans on Sustainable Energy,2017,8(4):1430-1442.
[6]冷华,童莹,李欣然,等(Leng Hua,Tong Ying,Li Xinran,et al).配电网运行状态综合评估方法研究(Comprehensive evaluation method research of the operation state in distributed network)[J].电力系统保护与控制(Power System Protection and Control),2017,45(1):53-59.
[7]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.
[8]肖峻,蒋迅,黄仁乐,等(Xiao Jun,Jiang Xun,Huang Renle,et al).城市电网分区柔性互联装置的定容方法(Capacity dimensioning method of partitioned flexible interconnection device in urban power network)[J].电力系统自动化(Automation of Electric Power Systems),2018,42(2):99-105.
[9]娄铖伟,张筱慧,丛鹏伟,等(Lou Chengwei,Zhang Xiaohui,Cong Pengwei,et al).含柔性软开关的有源配电网故障恢复策略(Service restoration strategy of active distribution network with soft open points)[J].电力系统自动化(Automation of Electric Power Systems),2018,42(1):23-31.
[10] Wang Chengshan,Song Guanyu,Li Peng,et al. Optimal siting and sizing of soft open points in active electrical distribution networks[J]. Applied Energy,2017,189:301-309.
[11] Bloemink J M,Green T C. Benefits of distribution-level power electronics for supporting distributed generation growth[J]. IEEE Trans on Power Delivery,2013,28(2):911-919.
[12] Long Cao,Wu Jianzhong,Thomas Lee,et al. Optimal opera-tion of soft open points in medium voltage electrical distribution networks with distributed generation[J]. Applied Energy,2016,184:427-437.
[13] Cao Wanyu,Wu Jianzhong,Jenkins N,et al. Operating principle of soft open points for electrical distribution network operation[J]. Applied Energy,2016,164:245-257.
[14] Konstantelos I,Giannelos S,Strbac G. Strategic valuation of smart grid technology options in distribution networks[J]. IEEE Trans on Power Systems,2017,32(2):1293-1303.
[15]李鹏,张培深,王成山,等(Li Peng,Zhang Peishen,Wang Chengshan,et al).基于智能软开关与市场机制的有源配电网阻塞管理方法(Congestion management method for active distribution networks based on soft open point and market mechanism)[J].电力系统自动化(Automation of Electric Power Systems),2017,41(20):9-16.
[16] 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,2017,208:986-995.
[17]王成山,宋关羽,李鹏,等(Wang Chengshan,Song Guanyu,Li Peng,et al).一种联络开关和智能软开关并存的配电网运行时序优化方法(A hybrid optimization method for distribution network operation with SNOP and tie switch)[J].中国电机工程学报(Proceedings of the CSEE),2016,36(9):2315-2321.
[18]邱晓燕,沙熠,宁雪姣,等(Qiu Xiaoyan,Sha Yi,NingXuejiao,et al).计及智能电网多不确定性的多目标储能优化(Multi-objective optimization of stored energy considering multi-uncertainty in smart grid)[J].高电压技术(High Voltage Engineering),2016,42(9):2715-2722.
[19]李晨,涂光瑜,罗毅(Li Chen,Tu Guangyu,Luo Yi).考虑区域安全评估指标的配电网无功优化(Reactive power optimization for distribution network considering index of area security assessment)[J].高电压技术(High Voltage Engineering),2007,33(9):134-137.
[20]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.
[21]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),http://kns.cnki.net/kcms/detail/12.1251.tm.20180813.1709.010.html.