保持主导振荡模态的双馈风电场动态聚合等值方法  

DYNAMIC AGGREGATION EQUIVALENCE METHOD FOR DFIG-BASEDWIND FARM WITH MAINTAINED DOMINANT OSCILLATION MODE

作　　者：王渝红[1] 杜婷 廖建权 宋雨妍 朱玲俐 Wang Yuhong;Du Ting;Liao Jianquan;Song Yuyan;Zhu Lingli(College of Electrical Engineering,Sichuan University,Chengdu 610065,China)

机构地区：[1]四川大学电气工程学院,成都610065

出　　处：《太阳能学报》2024年第6期518-529,共12页Acta Energiae Solaris Sinica

基　　金：国家重点研发计划(2021YFB2400800)。

摘　　要：针对风电场详细建模出现的“维数灾”问题,计及双馈风电机组各控制环节与系统振荡模态的关系,以保持等值前后主导振荡模态一致为目标,提出考虑风电机组多时间尺度级联特性的风电场站等值聚合方法。首先考虑风电机组多控制环节级联建立风电场状态空间模型;其次,利用振荡能量级判别系统主导振荡模态,并基于参与因子分析不同模态的关键影响因素;在此基础上,以主导振荡模态的关键影响因素为分群指标,结合自编码器进行数据降维处理,经改进聚合算法聚类和拓扑变换获取等值参数等环节后得到等值模型。最后,在Matlab平台分别搭建单机模型和含24台双馈风电机组的风电场模型,验证了所提等值方法的有效性。In order to solve the problem of"dimensional disaster"in the detailed modeling of wind farms,this paper considers the relationship between each control link of the doubly-fed wind turbine and the system oscillation mode,by which the goal is to keep the dominant oscillation mode consistent before and after the equivalent value.For this reason,an equivalent aggregation method for wind farms considering the multi-time scale cascade characteristics of wind turbines is proposed.Firstly,this paper takes into account the cascade of multiple control links of wind turbines to establish a state space model of wind farms.Secondly,use the oscillation energy level to identify the dominant oscillation mode of the system.Analyze the key influencing factors affecting different modes with participation factor.Then,the key influencing factor of the dominant oscillation mode is taken as the clustering index,and data dimensionality reduction is performed in combination with auto-encoder.The equivalent model is obtained after improving aggregation algorithm clustering and topological transformation to obtain equivalent parameters.Finally,a single-machine model and a wind farm model with 24 doubly-fed wind turbines are built in Matlab to verify the validity of the equivalent method proposed in this paper.

关 键 词：风电机组 风电场 模糊聚类 等效电路 多时间尺度 主导状态变量 

分 类 号：TM614[电气工程—电力系统及自动化]