一种考虑谐波指标的分布式电源选址定容规划方法
|
摘要
提出了一种考虑谐波指标的分布式电源选址定容规划方法.该方法将并网逆变器视作内阻无限大的、由多个频次谐波叠加而成的谐波电流源,在此基础上对系统的基波潮流和谐波潮流进行潮流计算.以系统的电压指标、网损指标、谐波指标综合效果最好为目标,考虑节点电压谐波含量上限等因素作为约束,在改善系统电压分布、减小系统网损的同时,避免了因分布式电源接入导致系统各处谐波含量过高的问题.采用基于改进遗传算法的多目标优化算法对所建立的模型进行求解,在IEEE-33节点系统上的仿真结果证明了所提出模型和方法的有效性.
This article proposes a locating and capacity planning method for distributed generation considering harmonic index. This method views grid-connected inverters as a harmonic current source superposed by a series of harmonic current sources with infinite internal resistance and different frequencies; basing on this, the power flow of fundamental wave and harmonic wave of the system are calculated. Taking comprehensive optimization of voltage index, power losses and harmonic index as objective, also considering constraints including maximum total harmonic distortion allowed of node voltage wave, the harmonic index of node voltage exceeding limit, voltage distribution and power losses of the system are improved. Employing multiobjective optimum algorithm based on improved genetic algorithm, the optimization model is solved. Finally, the IEEE33-bus system simulation result has verified the effectiveness of the proposed method.
This article proposes a locating and capacity planning method for distributed generation considering harmonic index. This method views grid-connected inverters as a harmonic current source superposed by a series of harmonic current sources with infinite internal resistance and different frequencies; basing on this, the power flow of fundamental wave and harmonic wave of the system are calculated. Taking comprehensive optimization of voltage index, power losses and harmonic index as objective, also considering constraints including maximum total harmonic distortion allowed of node voltage wave, the harmonic index of node voltage exceeding limit, voltage distribution and power losses of the system are improved. Employing multiobjective optimum algorithm based on improved genetic algorithm, the optimization model is solved. Finally, the IEEE33-bus system simulation result has verified the effectiveness of the proposed method.
引文
[1]张节潭,程浩忠,姚良忠,等.分布式风电源选址定容规划研究[J].中国电机工程学报,2009,29(16):1-7.Zhang Jietan,Cheng Haozhong,Yao Liangzhong,et al.Research on fixed air capacity location and capacity planning[J].Proceedings of the CSEE,2009,29(16):1-7.
[2]张立梅,唐巍,王少林,等.综合考虑配电公司及独立发电商利益的分布式电源规划[J].电力系统自动化,2011,35(4):23-28.Zhang Limei,Tang Wei,Wang Shaolin,et al.Distributed power planning considering the interests of power distribution companies and independent power producers[J].Automation of Electric Power Systems,2011,35(4):23-28.
[3]刘波,张焰,杨娜.改进的粒子群优化算法在分布式电源选址和定容中的应用[J].电工技术学报,2008,(2):103-108.Liu Bo,Zhang Yan,Yang Na.Application of improved particle swarm optimization algorithm in distributed power source location and constant volume[J].Transactions of China Electrotechnical Society,2008,(2):103-108.
[4]郑漳华,艾芊,顾承红,等.考虑环境因素的分布式发电多目标优化配置[J].中国电机工程学报,2009,29(13):23-28.Zheng Zhanghua,Ai Qian,Gu Chenghong,et al.Multi-objective optimization configuration of distributed generation considering environmental factors[J].Proceedings of the CSEE,2009,29(13):23-28.
[5]周春泉,史静,姜相明,等.计及无功优化的分布式电源选址与定容[J].现代电力,2014,31(2):42-45.Zhou Chunquan,Shi Jing,Jiang Xiangming,et al.Distributed power supply location and constant volume considering reactive power optimization[J].Modern Power,2014,31(2):42-45.
[6]夏澍,周明,李庚银.分布式电源选址定容的多目标优化算法[J].电网技术,2011,35(9):115-121.Xia Shu,Zhou Ming,Li Gengyin.Multi-objective optimization algorithm for distributed power supply location and capacity[J].Power System Technology,2011,35(9):115-121.
[7]章力,高元海,熊宁,等.考虑潮流倒送约束的分布式光伏电站选址定容规划[J].电力系统自动化,2014,38(17):43-48.Zhang Li,Gao Yuanhai,Xiong Ning,et al.Location and capacity planning of distributed photovoltaic power plants considering power flow reversal constraints[J].Automation of Electric Power Systems,2014,38(17):43-48.
[8]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):58-63,128.Li Liang,Tang Wei,Bai Muke,et al.Multi-objective distributed power source location and volume planning considering timing characteristics[J].Automation of Electric Power Systems,2013,37(3):58-63,128.
[9]江南,龚建荣,甘德强.考虑谐波影响的分布式电源准入功率计算[J].电力系统自动化,2007,31(3):19-23.Jiang Nan,Gong Jianrong,Gan Deqiang.Calculation of distributed power supply admitted power considering harmonic influence[J].Automation of Electric Power Systems,2007,31(3):19-23.
[10]朱海鹏,郑凯,金立军,等.基于谐波限值的分布式电源准入功率研究[J].机电工程,2014,31(9):1218-1221,1230.Zhu Haipeng,Zheng Kai,Jin Lijun,et al.Research on distributed power supply admission power based on harmonic limits[J].Mechanical&Electrical Engineering,2014,31(9):1218-1221,1230.
[11]张一中,宁元中.电力谐波[M].成都:成都科技大学出版社,1992.Zhang Yizhong,Ning Yuanzhong.Power Harmonics[M].Chengdu:Chengdu University of Science and Technology Press,1992.
[12]全国电压电流等级和频率标准化技术委员会.GB/T14549-1993电能质量公用电网谐波[S].北京:中国标准出版社,1993.National Voltage and Current Rating and Frequency Standardization Technical Committee.GB/T 14549-1993 Power Quality Utility Grid Harmonics[S].Beijing:China Standard Press,1993.
[13]Deb K,Pratap A,Agareal S,et al.A fast and elitist multiobjective genetic algorithm:NSGA-Ⅱ[J].IEEETransactions on Evolutionary Computation,2002,6(2):182-197.
[14]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.
[15]余昆,曹一家,陈星莺,等.含分布式电源的地区电网动态概率潮流计算[J].中国电机工程学报,2011,31(1):20-25.Yu Kun,Cao Yijia,Chen Xingying,et al.Dynamic probabilistic power flow calculation of regional power grid with distributed power sources[J].Proceedings of the CSEE,2011,31(1):20-25.
[2]张立梅,唐巍,王少林,等.综合考虑配电公司及独立发电商利益的分布式电源规划[J].电力系统自动化,2011,35(4):23-28.Zhang Limei,Tang Wei,Wang Shaolin,et al.Distributed power planning considering the interests of power distribution companies and independent power producers[J].Automation of Electric Power Systems,2011,35(4):23-28.
[3]刘波,张焰,杨娜.改进的粒子群优化算法在分布式电源选址和定容中的应用[J].电工技术学报,2008,(2):103-108.Liu Bo,Zhang Yan,Yang Na.Application of improved particle swarm optimization algorithm in distributed power source location and constant volume[J].Transactions of China Electrotechnical Society,2008,(2):103-108.
[4]郑漳华,艾芊,顾承红,等.考虑环境因素的分布式发电多目标优化配置[J].中国电机工程学报,2009,29(13):23-28.Zheng Zhanghua,Ai Qian,Gu Chenghong,et al.Multi-objective optimization configuration of distributed generation considering environmental factors[J].Proceedings of the CSEE,2009,29(13):23-28.
[5]周春泉,史静,姜相明,等.计及无功优化的分布式电源选址与定容[J].现代电力,2014,31(2):42-45.Zhou Chunquan,Shi Jing,Jiang Xiangming,et al.Distributed power supply location and constant volume considering reactive power optimization[J].Modern Power,2014,31(2):42-45.
[6]夏澍,周明,李庚银.分布式电源选址定容的多目标优化算法[J].电网技术,2011,35(9):115-121.Xia Shu,Zhou Ming,Li Gengyin.Multi-objective optimization algorithm for distributed power supply location and capacity[J].Power System Technology,2011,35(9):115-121.
[7]章力,高元海,熊宁,等.考虑潮流倒送约束的分布式光伏电站选址定容规划[J].电力系统自动化,2014,38(17):43-48.Zhang Li,Gao Yuanhai,Xiong Ning,et al.Location and capacity planning of distributed photovoltaic power plants considering power flow reversal constraints[J].Automation of Electric Power Systems,2014,38(17):43-48.
[8]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):58-63,128.Li Liang,Tang Wei,Bai Muke,et al.Multi-objective distributed power source location and volume planning considering timing characteristics[J].Automation of Electric Power Systems,2013,37(3):58-63,128.
[9]江南,龚建荣,甘德强.考虑谐波影响的分布式电源准入功率计算[J].电力系统自动化,2007,31(3):19-23.Jiang Nan,Gong Jianrong,Gan Deqiang.Calculation of distributed power supply admitted power considering harmonic influence[J].Automation of Electric Power Systems,2007,31(3):19-23.
[10]朱海鹏,郑凯,金立军,等.基于谐波限值的分布式电源准入功率研究[J].机电工程,2014,31(9):1218-1221,1230.Zhu Haipeng,Zheng Kai,Jin Lijun,et al.Research on distributed power supply admission power based on harmonic limits[J].Mechanical&Electrical Engineering,2014,31(9):1218-1221,1230.
[11]张一中,宁元中.电力谐波[M].成都:成都科技大学出版社,1992.Zhang Yizhong,Ning Yuanzhong.Power Harmonics[M].Chengdu:Chengdu University of Science and Technology Press,1992.
[12]全国电压电流等级和频率标准化技术委员会.GB/T14549-1993电能质量公用电网谐波[S].北京:中国标准出版社,1993.National Voltage and Current Rating and Frequency Standardization Technical Committee.GB/T 14549-1993 Power Quality Utility Grid Harmonics[S].Beijing:China Standard Press,1993.
[13]Deb K,Pratap A,Agareal S,et al.A fast and elitist multiobjective genetic algorithm:NSGA-Ⅱ[J].IEEETransactions on Evolutionary Computation,2002,6(2):182-197.
[14]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.
[15]余昆,曹一家,陈星莺,等.含分布式电源的地区电网动态概率潮流计算[J].中国电机工程学报,2011,31(1):20-25.Yu Kun,Cao Yijia,Chen Xingying,et al.Dynamic probabilistic power flow calculation of regional power grid with distributed power sources[J].Proceedings of the CSEE,2011,31(1):20-25.