摘要
首先,建立不同光伏之间以及光伏与负荷之间的相关性约束,并利用拉丁超立方抽样和Cholesky分解技术相结合的处理方法对该非线性的相关性约束进行场景化分析。其次,建立主动配电网分布式优化模型。由于配电网和微电网联络线上存在有功无功功率以及临界节点电压耦合关系,采用复制节点的区域分解方法实现配电网和微电网的解耦。在此基础上,引入目标级联分析法实现配电网和微电网之间的迭代求解。最后,采用改进的IEEE 123节点作为算例对所提模型进行了验证,并着重研究源—荷时空相关性对优化结果的影响。
Firstly,the correlation constraints between different photovoltaic(PV)units and between PV and load are established.Latin hypercube sampling and Cholesky decomposition are introduced to describe the nonlinear correlation constraints using the scenario analysis method.Then,the optimal scheduling model of active distribution network and microgrid is established respectively.Due to the coupling relationship of active power and threshold bus voltage on the tie-line between distribution network and microgrid,the region decomposition method is employed to decouple distribution network and microgrid.Then the proposed distribution optimization model is solved by analysis target cascading(ATC).Finally,the modified IEEE 123 bus system is adopted to demonstrate the effectiveness and convergence of the proposed model.The influence of source-load temporal and spatial correlation is analyzed.
作者
赵毅
吴志
钱仲豪
顾伟
李冬辉
刘阳
HAO Yi;WU Zhi;QIAN Zhonghao;GU Wei;LI Donghui;LIU Yang(School of Electrical Engineering,Southeast University,Nanjing 210096,China;Jiangsu Provincial Key Laboratory of Smart Grid Technology&Equipment,Nanjing 210096,China;Nantong Power Supply Company of State Grid Jiangsu Electric Power Co.,Ltd.,Nantong 26001,China)
出处
《电力系统自动化》
EI
CSCD
北大核心
2019年第19期68-79,共12页
Automation of Electric Power Systems
基金
国家自然科学基金资助项目(51707033)
国网江苏省电力有限公司科技项目(J2019100)~~
关键词
主动配电网
源—荷相关性
分布式优化
目标级联分析法
区域分解
active distribution network
source-load correlation
distributed optimal dispatch
analysis target cascading(ATC)
region decomposition
