摘要
随着电力网与信息网的深度融合,对电力信息相依网络进行合理建模具有十分重要的意义。针对现有模型未考虑网络节点间连接强度及数据传递方向的情况,提出了一种更符合实际的电力信息相依网络统一计算模型。结合电力系统及其二级电压协调控制系统,用关联矩阵建立网络拓扑模型,再根据撕裂法将该相依网络拆分为3个子网络:电力网、信息网以及耦合网。子网络内部节点关联强度可用节点电压方程、信息传输方程以及耦合方程确定,据此建立了电力-信息相依网络统一计算模型。IEEE-118系统计算结果验证了该模型的可行性,有利于现代大规模智能电网的分析计算。
With deep mutual integration between power grid and information network, it is of great importance to rationally model power-information(PI) interdependent networks. In allusion to the fact that connection strength and data transmission between nodes of the networks are not considered in current models, a unified computation model of the networks, more conform with practice, is proposed. Combining power system with secondary voltage control system, a network topology is established with incidence matrix. The whole network is then divided into three subnetworks using tearing method: a power network, a cyber network and a coupled network. These subnetworks are expressed with equations of node voltages, information transmission and coupling relationship. Thus the PI networks can be calculated with matrix method. Results obtained with IEEE 118-bus system show feasibility of the unified model. This model contributes to study of modern large-scale smart grid.
作者
金家瑶
谭阳红
JIN Jiayao;TAN Yanghong(College of Electrical and Information Engineering, Hunan University, Changsha 410082, Hunan Province, China)
出处
《电网技术》
EI
CSCD
北大核心
2019年第7期2361-2367,共7页
Power System Technology
基金
国家自然科学基金项目(51577046)
国家自然科学基金重点项目(51637004)
国家重点研发计划“重大科学仪器设备开发”项目(2016YFF0102200)
装备预先研究重点项目(41402040301)~~
关键词
电力-信息相依网络
统一计算
关联矩阵
拓扑模型
二级电压控制系统
power-information interdependent networks
unified computing
incidence matrix
topology model
secondary voltage control system
