基于双层网络频率控制的分布式风电并网研究  

Study on Grid Access of Distributed Wind Power Stations Based on Frequency Control of Two-layer Network

作　　者：梁婵娟[1] 邹艳丽[1] 吴克祥 邵贝贝 LIANG Chanjuan;ZOU Yanli;WU Kexiang;SHAO Beibei(School of Electronic and Information Engineering,Guangxi Normal University,Guilin 541004,China)

机构地区：[1]广西师范大学电子与信息工程学院,广西桂林541004

出　　处：《复杂系统与复杂性科学》2024年第1期28-34,共7页Complex Systems and Complexity Science

基　　金：国家自然科学基金(12162005);广西重大科技专项(桂科AA21077015)。

摘　　要：为研究含通信控制层的双层电网中分布式风电入网位置的选择,电网层采用二阶类Kuramoto模型进行建模,通信控制层收集发电机及其邻居节点信息形成控制信号并调整发电机的频率。根据负荷到原电网发电机节点的平均距离定义了3种并网方式,研究比较了含功率波动的分布式风电并网时最佳的入网位置。研究表明,加入双层网络频率控制可有效提高电网的同步性能和抗扰能力;分布式风电选择离原电网发电机节点平均距离小的负荷并网可提高电网稳定性。This paper studies the selection of grid access location for distributed wind power stations in a two-layer grid with a communication control layer.The power grid layer adopts the second-order Kuramoto-like model for modeling,and the communication control layer collects the information of the generators and their neighbor nodes to form control signals and adjusts the frequencies of the generator nodes.According to the average distance from each load node to the generator nodes of the original grid,three access models of the distributed power stations are defined,and the optimal grid access locations for distributed wind power stations with intermittent power fluctuations is studied.Study shows that the synchronization performance and anti-interference ability of the power grid can be effectively improved by adding the frequency control of the two-layer network.In addition,the distributed wind power stations can improve grid stability by selecting load nodes with a small average distance from the generator nodes of the original grid to be connected to the grid.

关 键 词：双层网络 频率控制 风力电站 分布式电站并网 电网稳定 

分 类 号：TM711[电气工程—电力系统及自动化]