提升源网荷储多元协同的虚拟化网格划分方法  

Source-load intelligent interactive distributed coordinated optimal control method considering incremental power cost

作　　者：高松 赵静波 Gao Song;Zhao Jingbo(State Grid Jiangsu Electric Power Co.,Ltd.,Nanjing 210024,China;State Grid Jiangsu Electric Power Co.,Ltd.,Research Inistitute,Nanjing 210000,China)

机构地区：[1]国网江苏省电力有限公司,江苏南京210024 [2]国网江苏省电力有限公司电力科学研究院,江苏南京210000

出　　处：《南京理工大学学报》2023年第2期262-270,共9页Journal of Nanjing University of Science and Technology

基　　金：国网江苏省电力有限公司科技项目(J2022002)。

摘　　要：为减少分布式源荷双侧随机性及时序不匹配对配电系统经济运行的影响,提升区域内源网荷储多元功率互补协同,促进可再生能源就地消纳能力,提出一种全面兼顾分布式电源消纳、负荷需求响应、储能支撑及网络拓扑多元协同的配电网虚拟化网格划分方法。通过图论搜索算法遍历虚拟网格内所有节点信息,充分依托负荷需求响应节点、分布式电源节点以及储能节点建立虚拟网格信息优化模型。引入二阶锥规划松弛电压、电流辅助变量,获得优化后的网络潮流分布。考虑虚拟网格通信成本,兼顾虚拟网格供电率、虚拟网格间功率交互以及虚拟网格节点控制维度,建立了虚拟网格分区划分目标函数模型,提出虚拟网格分区划分策略。以IEEE33节点系统为案例,对所提出的虚拟化网格分区划分策略进行验证,结果表明虚拟网格分区划分方法可提高源荷匹配度、虚拟网格供电率以及经济性。In order to reduce the influence of the randomness and timing mismatch on both sides of the distributed source and load on the economic operation of the power distribution system,improve the multi-power complementary coordination of the load and storage in the region,and promote the local consumption of renewable energy,a comprehensive consideration is proposed.A virtualized grid partitioning method for distribution network based on distributed power consumption,load demand response,energy storage support and network topology multivariate coordination.First,the graph theory search algorithm traverses all node information in the virtual grid,and fully relies on the load demand response nodes,distributed power nodes and energy storage nodes to establish a virtual grid information optimization model.Then,the second-order cone planning relaxation voltage and current auxiliary variables are introduced to obtain the optimized network power flow distribution.Finally,considering the communication cost of the virtual grid,taking into account the power supply rate of the virtual grid,the power interaction between the virtual grids and the control dimension of the virtual grid nodes,a virtual grid partitioning objective function model is established,and a virtual grid partitioning strategy is proposed.Taking the IEEE33 node system as an example,the proposed virtual grid partitioning strategy is verified.The results show that the virtual grid partitioning method can improve the source-load matching degree,the virtual grid power supply rate and the economy.

关 键 词：虚拟网格 分布式电源 需求侧响应 储能 源荷匹配度 

分 类 号：TM714.3[电气工程—电力系统及自动化]