基于转子动能控制的DFIG调频能力分析与调频方案
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张旭(1975),男,博士,讲师,主要从事风电参与电力系统调频及电力系统故障诊断研究;Email:zxtemper@163.com

中图分类号:

TM72

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能源基金会(美国)(G140320188)


Frequency regulation capability analysis and regulation plan of doublyfed induction generator based on the rotor kinetic energy control
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    摘要:

    电力系统中风电渗透率不断提高,弃风现象却越来越严重,风电缺乏火电和水电的调峰调频能力是制约风电利用效率的主要原因之一。在此背景下,首先分析风机矢量控制和转子动能控制策略原理、转子动能控制策略的作用过程;并基于风机运行区域和转子动能控制适用范围的分析,提出一种与DFIG调频控制能力相适应的调频方案。该方案能够根据风机运行状况,合理控制DFIG参与系统调频。同时根据风速调整控制参数,能够在不增加额外投资的条件下有效地发挥风电的调频能力,避免了风机过度调频带来的危害,提高了风电运行的效益。仿真表明该方案能够充分发挥DFIG自身的调频能力。

    Abstract:

    The wind power penetration of power system is increasing rapidly, while the wind abandoning phenomenon is getting more serious. The lack of thermal power and hydropower's peaking and frequency regulation ability is one of the main reasons to restrict the utilization efficiency of wind power. Under this circumstance, the wind generator vector control, rotor kinetic energy control strategy principle and rotor kinetic energy control strategy process are analyzed in this paper.Firstly, based on the analysis of the range of wind generator operating area and rotor kinetic energy control, a frequency regulation scheme is proposed to match the wind generator's frequency control capability. According to the running condition, DFIGs are controlled reasonably to participate in system frequency regulation. Control parameters could be optimized by the wind speed, which can effectively give full play to the frequency regulation ability of wind power without any additional investment, avoiding the risk of wind generators excessive participating in frequency regulation and improving the operational efficiency of wind power. Finally, the validity of the scheme are verified by a simulation in DIgSILENT/PowerFactory.

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张 旭,查效兵,岳 帅.基于转子动能控制的DFIG调频能力分析与调频方案[J].电力科学与技术学报,2020,35(3):141-147.
ZHNAG Xu, ZHA Xiaobing, YUE Shuai. Frequency regulation capability analysis and regulation plan of doublyfed induction generator based on the rotor kinetic energy control[J]. Journal of Electric Power Science and Technology,2020,35(3):141-147.

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  • 在线发布日期: 2020-09-14
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