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                Suzhou Electric Appliance Research Institute
                期刊号: CN32-1800/TM| ISSN1007-3175

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                基于改进NSGA-Ⅱ的考虑负载率指标的风电接入电网规划

                来源:电工电气发布时间:2020-07-16 16:16 浏览次数:36
                基于改进NSGA-Ⅱ的考虑负载率指标的风电接入电网规划
                 
                王轩1,蒋海峰2,韩伟1,李峰1,雷文宝1,李海涛1,王冰冰2
                (1 国◥网江苏省电力有限公司淮安供电分公司, 江苏 淮安 223002;2 南京理工大身上九彩光芒一閃学 自↑动化学院, 江苏 南京 210094)
                 
                    摘 要:为保证风电接入电网的经济性和安♂全性,提出了基于机会约束的多目标【电网规划模型。经济性目标中包含了新建黑色刀芒頓時光芒黯淡了下來线路成本、网哦损和切负荷惩罚费用。安全性目标考虑了期ζ 望值潮流熵和某置信度下线路的负载率水平。针对传统NSGA-算法的不足,采用基于个体支配々等级的自适应参数调☉整策略改进了NSGA-Ⅱ,增加了最优解集的多样性且改进了算法的收敛效果。以加入风电场▓的18节点系统为算例,结果表明,该模型获那神獸得的方案切负荷量较低,系统越限线路少,具有较高的可靠性和适应性。
                    关键词:风电;负载率;期望值潮流熵;多目标好电网规划;改进NSGA-Ⅱ算法
                    中图分类号:TM715     文献「标识码:A     文章编号:1007-3175(2020)07-0001-08
                 
                Multi-Objective Grid Planning Connected with Wind Farm Considering Load Rate Based on Improved NSGA-II Algorithm
                 
                WANG Xuan1, JIANG Hai-feng2, HAN Wei1, LI Feng1, LEI Wen-bao1, LI Hai-tao1, WANG Bing-bing2
                (1 State Grid Huaian Power Supply Company, Huaian 223002, China;
                2 School of Automation, Nanjing University of Science and Technology, Nanjing 210094, China)
                 
                    Abstract: In order to ensure the economics and safety of wind power connected to the power grid, a multi-objective grid planning model based on chance constraints is proposed. The economic goals include the cost of newly constructed lines, network loss and load-shedding costs.The safety objective takes into account the expected power flow entropy and the load factor level of the line at a certain confidence level.In response to the shortcomings of the traditional NSGA-II algorithm, an adaptive parameter adjustment strategy based on individual dominance levels is used to improve NSGA-II, increase the diversity of optimal solution sets and improve the convergence effect of the algorithm. Taking an 18-bus system set on a wind farm as an example, the results show that the scheme obtained by this model has a lower loadshedding capacity, fewer lines beyond the system limit, and high reliability and adaptability.
                    Key words: wind power; load rate; expected value power flow entropy; multi-objective power grid planning; improved NSGA-II algorithm
                 
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