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大规模双馈风电机组并网频率稳定控制策略
引用本文:杨蕾,王智超,周鑫,李胜男,和鹏,向川,张杰,王德林. 大规模双馈风电机组并网频率稳定控制策略[J]. 中国电力, 2021, 54(5): 186-194. DOI: 10.11930/j.issn.1004-9649.202003163
作者姓名:杨蕾  王智超  周鑫  李胜男  和鹏  向川  张杰  王德林
作者单位:1. 云南电网有限责任公司电力科学研究院,云南 昆明 650217;2. 西南交通大学 电气工程学院,四川 成都 611756;3. 云南电力调度控制中心,云南 昆明 650011
基金项目:云南电网有限责任公司科技项目(056200KK52180067);国家自然科学基金资助项目(51777176)
摘    要:风电在电网中的渗透率逐年升高,尽管其在优化电源结构、节能减排方面有颇多贡献,但是由于自然风的波动性和不确定性,大规模风电并网势必会对电网频率稳定等方面产生影响.针对此问题,对装机量较高的双馈型风力发电机组(doubly-fed induction generator,DFIG)控制系统进行研究,制定大规模双馈型风电机组...

关 键 词:双馈风电机组  频率稳定  变系数下垂控制  虚拟惯性控制  变减载系数  大规模风电并网
收稿时间:2020-03-24
修稿时间:2020-06-17

Frequency Stability Control Strategy for Large-scale Grid Connections with DFIG Units
YANG Lei,WANG Zhichao,ZHOU Xin,LI Shengnan,HE Peng,XIANG Chuan,ZHANG Jie,WANG Delin. Frequency Stability Control Strategy for Large-scale Grid Connections with DFIG Units[J]. Electric Power, 2021, 54(5): 186-194. DOI: 10.11930/j.issn.1004-9649.202003163
Authors:YANG Lei  WANG Zhichao  ZHOU Xin  LI Shengnan  HE Peng  XIANG Chuan  ZHANG Jie  WANG Delin
Affiliation:1. Electric Power Research Institute, Yunnan Power Grid Co., Ltd., Kunming 650217, China;2. School of Electrical Engineering, Southwest Jiaotong University, Chengdu 611756, China;3. Yunnan Power Dispatch Center, Kunming 650011, China
Abstract:The penetration rate of wind power in the power grid has been increasing year by year. A lot of contributions have been made to optimize the power supply structure, energy conservation and emission reduction, however, due to the natural fluctuation and uncertainty of wind speed, grid integration with large-scale wind power is bound to impact the frequency stability of the power grid. With regard to this problem, the doubly-fed induction generator (DFIG) control system was studied in this paper and then the primary frequency modulation control strategy following large-scale DFIG connection was established. On the basis of the existing droop control and virtual inertia control strategy, the droop control part is implemented by virtue of variable coefficient according to the input wind speed and the frequency fluctuation of grid side, as to improve the droop control characteristics. Additionally, the operating conditions of DFIG are classified, and the load reduction coefficient is used to reduce the curtailment of wind while the DFIG is running at limited power level. The effectiveness of the proposed primary frequency modulation control strategy is verified by means of the simulation of an actual power grid model with large-scale wind power grid connection.
Keywords:DFIG  frequency stability  variable coefficient droop control  virtual inertia control  variable coefficient offload control  large-scale wind power grid connection  
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