计及配电网运行风险的分布式电源选址定容规划
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摘要
分布式能源是现如今能源转型发展的重心。充分考虑分布式能源发电出力波动对配电网的影响,并将配电网运行风险计及分布式电源选址定容,以分布式电源并网运行与离网运行时的风险成本为目标函数,以分布式电源准入容量、有功功率平衡、节点电压不越限、线路不过载以及反向潮流不越限为约束条件,构建分布式电源选址定容规划模型。采用改进多目标粒子群算法对模型进行求解。仿真算例表明:该方法优化了网络结构,降低了运行费用;出现故障时,确保了关键负荷的正常供电,降低了故障损失。
Distributed power is crucial to energy transition and development. In this paper, an optimal locating and sizing planning model of distributed generation(DG) is established, which takes the risk cost of parallel operation and islanding operation of DG as objective function. The model fully considers the impact of DG output power fluctuation on the distribution network and takes the distribution network operation risk into account. Then an improved multi-objective particle swarm optimization algorithm is applied to solving the model with the constraints of DG penetration level,power balance, node voltages, branch transmission power and reverse power flow. The simulation results verify that the proposed method can not only optimize network structure and lower operating costs, but also guarantee the power supply reliability and reduce the loss caused by the fault.
Distributed power is crucial to energy transition and development. In this paper, an optimal locating and sizing planning model of distributed generation(DG) is established, which takes the risk cost of parallel operation and islanding operation of DG as objective function. The model fully considers the impact of DG output power fluctuation on the distribution network and takes the distribution network operation risk into account. Then an improved multi-objective particle swarm optimization algorithm is applied to solving the model with the constraints of DG penetration level,power balance, node voltages, branch transmission power and reverse power flow. The simulation results verify that the proposed method can not only optimize network structure and lower operating costs, but also guarantee the power supply reliability and reduce the loss caused by the fault.
引文
[1]张晓雪,牛焕娜,赵静翔.含微电网的配电网优化调度[J].电工技术学报,2017,32(7):165-173.Zhang Xiaoxue,Niu Huanna,Zhao Jingxiang.Optimal dispatch method of distribution network with microgrid[J].Transactions of China Electrotechnical Society,2017,32(7):165-173.
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[11]吕智林,谭颖,李捷,等.基于Markov-ELM的独立混合微网DG多目标容量优化配置[J].中国电机工程学报,2017,37(7):1927-1937.LüZhilin,Tan Ying,Li Jie,et al.Multi-objective optimal sizing for distributed generation of isolated hybrid microgrid using Markov-based electromagnetismlike mechanism[J].Proceedings of the CSEE,2017,37(7):1927-1937.
[12]肖峻,郭伟,俞伟,等.高中压配电网的一体化安全性校验方法[J].高电压技术,2016,42(7):2047-2053.Xiao Jun,Guo Wei,Yu Wei,et al.Assessment method for integrated security of HV and MVdistribution network[J].High Voltage Engineering,2016,42(7):2047-2053.
[13]吴文传,宁辽逸,张伯明,等.电力系统在线运行风险评估与决策[J].电力科学与技术学报,2006,24(2):28-34.Wu Wenchuan,Ning Liaoyi,Zhang Boming,et al.Online operational risk assessment and decision making for power systems[J].Journal of Electric Power Science and Technology,2006,24(2):28-34.
[14]何成明,王洪涛,王春义,等.风电功率爬坡事件作用下考虑时序特性的系统风险评估[J].电力自动化设备,2016,36(1):35-41.He Chengming,Wang Hongtao,Wang Chunyi,et al Risk assessment considering time-sequence characteristics for power system with wind power ramp event[J].Electric Power Automation Equipment,2016,36(1):35-41.
[15]陈为化,江全元,曹一家.基于风险理论和模糊推理的电压脆弱性评估[J].中国电机工程学报,2005,25(24):20-25.Chen Weihua,Jiang Quanyuan,Cao Yijia.Voltage vulnerability assessment based on risk the theory and fuzzy reasoning[J].Proceedings of the CSEE,200525(24):20-25.
[2]McCalley James D,Vittal V,Abi-Samra N.An overview of risk based security assessment[C]//IEEEPower Engineering Society Summer Meeting,Edmonton,Alta,Canada,1999,VI:173-178.
[3]贺悝,李勇,曹一家,等.考虑分布式储能参与的直流配电网电压柔性控制策略[J].电工技术学报,2017,32(10):101-110.He Li,Li Yong,Cao Yijia,et al.Flexible voltage control strategy of DC distribution network considering distributed energy storage[J].Transactions of China Electrotechnical Society,2017,32(10):101-110.
[4]孙小兵.世界能源新格局下中国的能源安全问题[J].南方能源建设,2014,1(1):16-24.Sun Xiaobing.Discussion of China's energy security in the new world energy pattern[J].Energy Construction,2014,1(1):16-24.
[5]肖浩,裴玮,邓卫,等.分布式电源对配电网电压的影响分析及其优化控制策略[J].电工技术学报,2016,31(增刊1):203-213.Xiao Hao,Pei Wei,Deng Wei,et al.Analysis of the impact of distributed generation on distribution network voltage and its optimal control strategy[J].Transactions of China Electrotechnical Society,2016,31(S1):203-213.
[6]Carmen L T,Djalma M.Optimal distributed generation allocation for reliability,losses,and voltage improvement[J].Electrical Power and Energy Systems,2006,28(6):413-420.
[7]叶德意,何正友,臧天磊.基于自适应变异粒子群算法的分布式电源选址与容量确定[J].电网技术,2011,35(6):155-160.Ye Deyi,He Zhengyou,Zang Tianlei.Siting and sizing of distributed generation planning based on adaptive mutation particle swarm optimization algorithm[J].Power System Technology,2011,35(6):155-160.
[8]刘文霞,徐慧婷.考虑电压控制成本的分布式电源优化配置[J].电网技术,2016,40(10):2998-3005.Liu Wenxia,Xu Huiting.Optimal distributed generator allocation method considering voltage control cost[J].Power System Technology,2016,40(10):2998-3005.
[9]El-Ela A A,Allam S M,Shatla M M.Maximal optimal benefits of distributed generation using genetic algorithms[J].Electric Power System Research,2010,80(7):869-877.
[10]李亮,唐巍,白牧可,等.考虑时序特性的多目标分布式电源选址定容规划[J].电力系统自动化,2013,37(3):58-63.Li Liang,Tang Wei,Bai Muke,et al.Multi-objective locating and sizing of distributed generators based on time-sequence characteristics[J].Automation of Electric Power Systems,2013,37(3):58-63.
[11]吕智林,谭颖,李捷,等.基于Markov-ELM的独立混合微网DG多目标容量优化配置[J].中国电机工程学报,2017,37(7):1927-1937.LüZhilin,Tan Ying,Li Jie,et al.Multi-objective optimal sizing for distributed generation of isolated hybrid microgrid using Markov-based electromagnetismlike mechanism[J].Proceedings of the CSEE,2017,37(7):1927-1937.
[12]肖峻,郭伟,俞伟,等.高中压配电网的一体化安全性校验方法[J].高电压技术,2016,42(7):2047-2053.Xiao Jun,Guo Wei,Yu Wei,et al.Assessment method for integrated security of HV and MVdistribution network[J].High Voltage Engineering,2016,42(7):2047-2053.
[13]吴文传,宁辽逸,张伯明,等.电力系统在线运行风险评估与决策[J].电力科学与技术学报,2006,24(2):28-34.Wu Wenchuan,Ning Liaoyi,Zhang Boming,et al.Online operational risk assessment and decision making for power systems[J].Journal of Electric Power Science and Technology,2006,24(2):28-34.
[14]何成明,王洪涛,王春义,等.风电功率爬坡事件作用下考虑时序特性的系统风险评估[J].电力自动化设备,2016,36(1):35-41.He Chengming,Wang Hongtao,Wang Chunyi,et al Risk assessment considering time-sequence characteristics for power system with wind power ramp event[J].Electric Power Automation Equipment,2016,36(1):35-41.
[15]陈为化,江全元,曹一家.基于风险理论和模糊推理的电压脆弱性评估[J].中国电机工程学报,2005,25(24):20-25.Chen Weihua,Jiang Quanyuan,Cao Yijia.Voltage vulnerability assessment based on risk the theory and fuzzy reasoning[J].Proceedings of the CSEE,200525(24):20-25.