中国电力 ›› 2016, Vol. 49 ›› Issue (3): 134-140.DOI: 10.11930/j.issn.1004-9649.2016.03.134.07

• 新能源 • 上一篇    下一篇

风电次同步谐振实例特征及机理分析

刘辉1,李蕴红1,李雨1,谢小荣2   

  1. 1. 国网冀北电力有限公司电力科学研究院华北电力科学研究院有限责任公司,北京 100045;
    2. 清华大学 电机系,北京 100084
  • 收稿日期:2016-01-08 出版日期:2016-03-20 发布日期:2016-04-08
  • 作者简介:刘辉(1975—),男,山东济宁人,高级工程师,从事新能源并网相关技术研究。E-mail: liuhui@163.com
  • 基金资助:
    河北省重大科技成果转化专项课题(13214604D);国家电网公司科技项目(52010116000S)

Case Study and Mechanism Analysis of Sub-Synchronous Resonance in Wind Power Plants

LIU Hui1, LI Yunhong1, LI Yu1, XIE Xiaorong2   

  1. 1. Electric Power Research Institute, State Grid Jibei Electric Power Company Limited North China Electric Power Research Institute Co., Ltd, Xicheng District, Beijing 100045, China;
    2. Tsinghua University, Beijing 100084, China
  • Received:2016-01-08 Online:2016-03-20 Published:2016-04-08
  • Supported by:
    This paper is supported by Major Sciontific and Technology Transformation Achierements of Hebei (No. 13214604D) and Scientific and Technology Program of SGCC (No. 52010116000S).

摘要: 集群风电-串补发输电系统面临着次同步谐振的风险,我国某大规模风电汇集地区近几年发生了多起次同步谐振事件,造成风机脱网和设备损坏等后果,威胁到电网安全运行。通过对该地区历次风电次同步谐振实例分析,全面总结出振荡事件的发生条件、频谱分布、阻尼特性、不同类型风机响应特性等特征。在此基础上,采用时域仿真复现了现场现象,通过特征根和电路模型分析,揭示了该地区次同步谐振的机理为“双馈风机控制参与的感应发电机效应”。

关键词: 次同步谐振, 双馈感应型风电机组, 变流器控制, 串补, 感应发电机效应

Abstract: Large-scale Doubly-fed induction generator-based wind power plants connected to the series-compensated transmission system are facing the risk of sub-synchronous resonance(SSR). A regional grid recently suffered from a spate of SSR failures. The incidents have seriously affected the safe and stable operation of the power grid. The SSR phenomenon characteristics of the wind power in the region are summarized from the aspects of precondition, spectral characteristics, damping ratio and performance of different kinds of wind turbines. Based on the analysis, simulations in PSCAD/EMTDC are used to demonstrate a typical SSR. Through the eigenvalue analysis, the mechanism of the wind power SSR phenomenon is defined as the DFIG control-involved induction generator effect.

Key words: sub-synchronous resonance, Doubly-fed induction generator, converter control, series compensation, induction generator effec

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