计及电压稳定性评估的配电网DG选址定容的研究
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摘要
近些年配电网设备的运行越来越接近极限状态,使配网中也开始出现电压稳定问题。针对目前DG接入配网的研究大多未考虑电压稳定的因素,提出一种计及电压稳定性评估的配电网DG选址定容决策方法。通过对传统电压稳定指标进行改进,将电力系统允许的电压运行范围纳入稳定评估指标中。在综合考虑电压稳定性、系统网损和电流裕度指标的基础上,采用(Technique for Order Preference by Similarity to an Ideal Solution, TOPSIS)多目标决策方法对DG接入配电网的位置和容量进行决策。通过两节点系统算例与传统电压稳定指标的对比,验证了改进的电压稳定评估方法的合理性。通过IEEE33节点系统算例分析,验证了DG选址定容策略的可行性和有效性。
In recent years, the equipment operation of the distribution network has been getting close to the limit state. Therefore, the problem of voltage stability has appeared in the distribution network gradually. In view of the factor that voltage stability is not considered in most current researchers on DG access to distribution network, a method for determining the location and capacity of DG in the distribution network is proposed, which takes voltage stability problem into account. By improving the traditional voltage stability index, the allowed voltage range of power system is included in the stability assessment index. Based on the comprehensive consideration of voltage stability, network power losses and current margin index, this paper uses TOPSIS method to decide the location and capacity of DG in the distribution network. Compared with the traditional voltage stability index, the rationality of the improved voltage stability evaluation method is verified through the simulation on two-node system example. And the feasibility and effectiveness of DG location and capacity determination strategy are verified through the analysis of IEEE33 node system.
In recent years, the equipment operation of the distribution network has been getting close to the limit state. Therefore, the problem of voltage stability has appeared in the distribution network gradually. In view of the factor that voltage stability is not considered in most current researchers on DG access to distribution network, a method for determining the location and capacity of DG in the distribution network is proposed, which takes voltage stability problem into account. By improving the traditional voltage stability index, the allowed voltage range of power system is included in the stability assessment index. Based on the comprehensive consideration of voltage stability, network power losses and current margin index, this paper uses TOPSIS method to decide the location and capacity of DG in the distribution network. Compared with the traditional voltage stability index, the rationality of the improved voltage stability evaluation method is verified through the simulation on two-node system example. And the feasibility and effectiveness of DG location and capacity determination strategy are verified through the analysis of IEEE33 node system.
引文
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[11]高艺文,刘俊勇,雷成,等.考虑配电网结构变化的DG规划[J].电力系统保护与控制,2014,42(4):40-46.GAO Yiwen,LIU Junyong,LEI Cheng,et al.DGplanning considering the variation of the distribution network structure[J].Power System Protection and Control,2014,42(4):40-46.
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[14]李题印,韩永强,胡晓琴,等.分布式发电接入电网的静态电压稳定特性及影响分析[J].电力系统保护与控制,2014,42(12):8-13.LI Tiyin,HAN Yongqiang,HU Xiaoqin,et al.Characteristics of static voltage stability for distributed generation integrated into power system and its impacts analysis[J].Power System Protection and Control,2014,42(12):8-13.
[15]张曦,张宁,龙飞,等.分布式电源接入配网对其静态电压稳定性影响多角度研究[J].电力系统保护与控制,2017,45(6):120-125.ZHANG Xi,ZHANG Ning,LONG Fei,et al.Research of the impacts on static voltage stability of distribution networks with distributed generation from different aspects[J].Power System Protection and Control,2017,45(6):120-125.
[16]衣涛,王承民,谢宁,等.电力系统的多重(维)鞍结分岔点及其特征分析[J].电工技术学报,2015,30(20):145-150.YI Tao,WANG Chengmin,XIE Ning,et al.Power system multiple saddle-node bifurcation point and its characteristic analysis[J].Transactions of China Electrotechnical Society,2015,30(20):145-150.
[17]张谦,廖清芬,唐飞,等.计及分布式电源接入配电网静态电压稳定性评估方法[J].电力系统自动化,2015,39(15):42-48.ZHANG Qian,LIAO Qingfeng,TANG Fei,et al.Steady state voltage stability assessment method of distribution network considering inter-connection of distributed generators[J].Automation of Electric Power Systems,2015,39(15):42-48.
[18]董雷,张昭,蒲天娇,等.基于PMU量测信息的电压稳定在线评估指标[J].电力系统保护与控制,2015,43(11):1-6.DONG Lei,ZHANG Zhao,PU Tianjiao,et al.An online voltage stability index on measuring information of phasor measurement unit[J].Power System Protection and Control,2015,43(11):1-6.
[19]CHEBBO A M,IRVING M R,STERLING M J H.Voltage collapse proximity indicator:behavior and implications[J].IEE Proceedings-C:Generation,Transmission and Distribution,1992,139(3):241-252.
[20]徐玖平,吴巍.多属性决策的理论与方法[M].北京:清华大学出版社,2006.
[2]ZHENG Weiye,WU Wenchuan,ZHANG Boming,et al.A fully distributed reactive power optimization and control method for active distribution networks[J].IEEETransactions on Smart Grid,2016,7(2):1021-1033.
[3]吴素农.分布式电源控制与运行[M].北京:中国电力出版社,2012.
[4]彭光斌,詹红霞,黄培东,等.基于自适应粒子群算法优化DG的配网静态电压稳定性提高策略[J].电力系统保护与控制,2017,45(8):100-106.PENG Guangbin,ZHAN Hongxia,HUANG Peidong,et al.Improved strategy of the static voltage stability of distribution network based on adaptive particle swarm optimization algorithm for DG[J].Power System Protection and Control,2017,45(8):100-106.
[5]马麟,刘建鹏.考虑时序特性和环境效益的多目标多类型分布式电源规划[J].电力系统保护与控制,2016,44(19):32-40.MA Lin,LIU Jianpeng.Multi-objective planning of multi-type distributed generation considering timing characteristics and environmental benefits[J].Power System Protection and Control,2016,44(19):32-40.
[6]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 generators planning considering benefits for distribution power company and independent power suppliers[J].Automation of Electric Power Systems,2011,35(4):23-28.
[7]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.
[8]韩亮,王守相,赵歌.基于区间TOPSIS与遗传算法混合的分布式电源优化配置[J].电力系统自动化,2013,37(24):37-42.HAN Liang,WANG Shouxiang,ZHAO Ge.Optimal planning of distributed generators based on combination of interval TOPSIS method and genetic algorithm[J].Automation of Electric Power Systems,2013,37(24):37-42.
[9]王威,黄大为.含可调度分布式电源的配电网综合优化[J].电工技术学报,2015,30(12):429-433.WANG Wei,HUANG Dawei.The coordination optimization of distribution networks with dispatched distributed generators[J].Transactions of China Electrotechnical Society,2015,30(12):429-433.
[10]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 generation locating and sizing[J].Power System Technology,2011,35(9):115-121.
[11]高艺文,刘俊勇,雷成,等.考虑配电网结构变化的DG规划[J].电力系统保护与控制,2014,42(4):40-46.GAO Yiwen,LIU Junyong,LEI Cheng,et al.DGplanning considering the variation of the distribution network structure[J].Power System Protection and Control,2014,42(4):40-46.
[12]MA Zhaoxing,CHEN Hao,CHAI Yanli.Analysis of voltage stability uncertainty using stochastic response surface method related to wind farm correlation[J].Protection and Control of Modern Power Systems,2017,2(2):211-219.DOI:10.1186/s41601-017-0051-3.
[13]陈海焱,段献忠,陈金富.分布式发电对配网静态电压稳定性的影响[J].电网技术,2006,30(19):27-30.CHEN Haiyan,DUAN Xianzhong,CHEN Jinfu.Impacts of distributed generation on steady state voltage stability of distribution system[J].Power System Technology,2006,30(19):27-30.
[14]李题印,韩永强,胡晓琴,等.分布式发电接入电网的静态电压稳定特性及影响分析[J].电力系统保护与控制,2014,42(12):8-13.LI Tiyin,HAN Yongqiang,HU Xiaoqin,et al.Characteristics of static voltage stability for distributed generation integrated into power system and its impacts analysis[J].Power System Protection and Control,2014,42(12):8-13.
[15]张曦,张宁,龙飞,等.分布式电源接入配网对其静态电压稳定性影响多角度研究[J].电力系统保护与控制,2017,45(6):120-125.ZHANG Xi,ZHANG Ning,LONG Fei,et al.Research of the impacts on static voltage stability of distribution networks with distributed generation from different aspects[J].Power System Protection and Control,2017,45(6):120-125.
[16]衣涛,王承民,谢宁,等.电力系统的多重(维)鞍结分岔点及其特征分析[J].电工技术学报,2015,30(20):145-150.YI Tao,WANG Chengmin,XIE Ning,et al.Power system multiple saddle-node bifurcation point and its characteristic analysis[J].Transactions of China Electrotechnical Society,2015,30(20):145-150.
[17]张谦,廖清芬,唐飞,等.计及分布式电源接入配电网静态电压稳定性评估方法[J].电力系统自动化,2015,39(15):42-48.ZHANG Qian,LIAO Qingfeng,TANG Fei,et al.Steady state voltage stability assessment method of distribution network considering inter-connection of distributed generators[J].Automation of Electric Power Systems,2015,39(15):42-48.
[18]董雷,张昭,蒲天娇,等.基于PMU量测信息的电压稳定在线评估指标[J].电力系统保护与控制,2015,43(11):1-6.DONG Lei,ZHANG Zhao,PU Tianjiao,et al.An online voltage stability index on measuring information of phasor measurement unit[J].Power System Protection and Control,2015,43(11):1-6.
[19]CHEBBO A M,IRVING M R,STERLING M J H.Voltage collapse proximity indicator:behavior and implications[J].IEE Proceedings-C:Generation,Transmission and Distribution,1992,139(3):241-252.
[20]徐玖平,吴巍.多属性决策的理论与方法[M].北京:清华大学出版社,2006.