基于指标降维及集电系统辨识的双馈风电场次同步振荡等值  

Subsynchronous Oscillation Equivalence of Doubly-fed Wind Farms Based on Index Dimension Reduction and Collector System Identification

作　　者：韩平平[1] 王欢[1] 王希 崔晓丹 吴家龙 HAN Pingping;WANG Huan;WANG Xi;CUI Xiaodan;WU Jialong(Anhui Province Key Laboratory of Renewable Energy Utilization and Energy Saving(Hefei University of Technology),Hefei 230009,Anhui Province,China;Nari Group Corporation,Nanjing 211106,Jiangsu Province,China)

机构地区：[1]新能源利用与节能安徽省重点实验室(合肥工业大学),安徽省合肥市230009 [2]南瑞集团有限公司,江苏省南京市211106

出　　处：《中国电机工程学报》2022年第23期8465-8474,共10页Proceedings of the CSEE

基　　金：国家重点研发计划项目(2016YFB0900600);智能电网保护和运行控制国家重点实验室开放基金项目(SGNR0000 KJJS2007629)。

摘　　要：双馈风电场采用线路串联电容补偿会引起系统发生次同步振荡。对每台风机详细建模会出现维数灾问题,需要建立适用于次同步振荡特性分析的等值模型。该文提出一种基于指标降维及集电系统辨识的双馈风电场次同步振荡等值方法。首先,以双馈风电场经串补并网系统次同步振荡模式的主导变量作为初始变量指标,建立因子分析模型进行分群;其次,利用等功率损耗法得到复杂集电网络的初始等值参数,通过自适应粒子群优化算法对等值参数进行辨识;最后,通过建立含20台以及42台双馈风机的风电场详细模型以及等值模型,验证了该等值方法的有效性。The use of line series capacitance compensation in doubly-fed wind farms will cause subsynchronous oscillations in the system.The detailed modeling of each wind fan will cause the problem of dimensionality disaster,and it is necessary to establish an equivalent model suitable for the analysis of subsynchronous oscillation characteristics.This paper proposed a subsynchronous oscillation equivalent method for doubly-fed wind farms based on index dimensionality reduction and power collection system identification.First,the dominant variable of the subsynchronous oscillation mode of the series-compensated grid-connected system of the doubly-fed wind farm was used as the initial variable index,and a factor analysis model was established for grouping.Secondly,the initial equivalent parameters of the complex collection network were obtained by using the equal power loss method,and the equivalent parameters were identified by the adaptive particle swarm optimization algorithm.Finally,by establishing the detailed wind farm model and equivalent model of 20 and 42 doubly-fed wind fans,the effectiveness of the equivalent method can be verified.

关 键 词：双馈风电场 次同步振荡 集电系统 参数辨识 等值建模 

分 类 号：TM73[电气工程—电力系统及自动化]