不同风电负载率对系统小干扰稳定性的影响

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英文篇名：Influence of Different Load Rates of Wind Power on Small Disturbance Stability of a System 作者：任振宇 ; 张师 ; 周立新 英文作者：REN Zhen-yu;ZHANG Shi;ZHOU Li-xin;Inner Mongolia Power Group Co.UTD;College of Electrical Engineering,Northeast Dianli University; 关键词：风电 ; 负载率 ; 小干扰稳定 ; 功角 英文关键词：wind power;;load rate;;small disturbance stability;;power angle 中文刊名：DQKG 英文刊名：Electric Switchgear 机构：内蒙古电力集团有限责任公司;东北电力大学电气工程学院; 出版日期：2019-04-15 出版单位：电气开关 年：2019 期：v.57;No.278 语种：中文; 页：DQKG201902002 页数：4 CN：02 ISSN：21-1279/TM 分类号：7-9+12

摘要

风电机组的运行工况对系统小干扰稳定性有重要影响,而现有的研究成果中,关于风电负载率对系统小干扰稳定性的影响并不多见,因此本文研究了不同风电负载率对系统小干扰稳定性的影响。在建立DFIG数学模型的基础上,分析了DFIG负载率对系统小干扰稳定性的影响机理,并采用PSAT搭建了某实际系统,分别采用特征根分析法和是数值仿真法分析了DFIG负载率对系统小干扰稳定性的影像。通过本文的分析可以得出,当风电场调度指令给定,采用更多DFIG均摊有功功率,会提高系统的小干扰稳定性。
        The operating condition of wind turbine has an important influence on the stability of the system with small disturbance.However,in the existing research results,the influence of wind power load ratio on the stability of the system with small disturbance is rare.Therefore,this paper studies the influence of different wind power load rates on the small disturbance stability of the system.On the basis of establishing the DFIG mathematical model,the influence mechanism of the DFIG load ratio on the small disturbance stability of the system is analyzed,and a practical system is built by using PSAT.The characteristic root analysis method and numerical simulation method are used to analyze the image of the stability of DFIG load rate to the small disturbance of the system.Through the analysis of this paper,it can be concluded that,when the wind farm is dispatching,Given the instruction,using more DFIG to distribute the active power will improve the stability of the system.

引文

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