直驱风机对火电机组次同步振荡的影响及抑制方法

吴杨, 肖湘宁, 罗超, 廖坤玉, 杨琳

吴杨, 肖湘宁, 罗超, 等. 直驱风机对火电机组次同步振荡的影响及抑制方法[J]. 现代电力, 2019, 36(5): 31-38.
引用本文: 吴杨, 肖湘宁, 罗超, 等. 直驱风机对火电机组次同步振荡的影响及抑制方法[J]. 现代电力, 2019, 36(5): 31-38.
WU Yang, XIAO Xiangning, LUO Chao, et al. Impact of PMSG to Thermal Power Units on Sub-synchronous Oscillation Characteristics and Suppression Strategy[J]. Modern Electric Power, 2019, 36(5): 31-38.
Citation: WU Yang, XIAO Xiangning, LUO Chao, et al. Impact of PMSG to Thermal Power Units on Sub-synchronous Oscillation Characteristics and Suppression Strategy[J]. Modern Electric Power, 2019, 36(5): 31-38.

直驱风机对火电机组次同步振荡的影响及抑制方法

基金项目: 中央高校基本科研业务费专项资金(2017 XS011)
详细信息
    作者简介:

    吴 杨(1994—),男,硕士研究生,通信作者,研究方向为电力系统次同步振荡的分析与控制,E-mail:ncepu_wy94@163.com;肖湘宁(1953—),男,教授,博士生导师,研究方向为电力系统次同步振荡、现代电能质量、电力电子技术在电力系统中的应用,E-mail:xxn@ncepu.edu.cn;罗 超(1987—),男,博士,研究方向为电力系统分析与控制,E-mail:ceeelch@163.com。

  • 中图分类号: TM712

Impact of PMSG to Thermal Power Units on Sub-synchronous Oscillation Characteristics and Suppression Strategy

  • 摘要: 风火打捆系统中,风电机组的并网使得火电机组的次同步振荡情况变得更为复杂。基于IEEE第一标准模型搭建了风火打捆经串补外送系统,推导了直驱风机输出功率与火电机组次同步阻尼的关系,分析了其对火电机组次同步振荡的影响机理,并通过PSCAD平台结合复转矩系数法和时域仿真分析进行验证。基于此机理,提出了一种在直驱风机的网侧变流器控制系统无功外环处附加阻尼控制的抑制方法,并对其关键参数的优化设计方法进行了分析,时域仿真结果表明所提出的附加阻尼控制可以有效抑制火电机组的次同步振荡。
    Abstract: In the wind-thermal bundling system, the integration of wind turbines makes the sub-synchronous oscillation of thermal power units more complicated. In this paper, based on the first standard model of IEEE, the wind-thermal bundling system model is built, and the relationship between the PMSG output and the sub-synchronous damping of the thermal power unit is derived. The mechanism of its influence on the sub-synchronous oscillation of the thermal units is analyzed, and verified by the complex torque coefficient method and the time-domain simulation analysis on the PSCAD platform. Based on this mechanism, a suppression method of additional damping control at the outer control ring of the PMSG grid-side converter is proposed, and the optimization designing method for the key parameters configuration is analyzed. The time-domain simulation results show that the additional damping control can effectively suppress the sub-synchronous oscillation of the thermal power unit.
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  • 收稿日期:  2018-05-26
  • 发布日期:  2019-10-08

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