Multi-source coordinated frequency regulation strategy for HVDC sending system with large-scale wind power

被引:0
|
作者
Ai Q. [1 ,2 ]
Liu T. [1 ]
Yin Y. [1 ]
Jiang Q. [1 ]
Tao Y. [1 ]
机构
[1] College of Electrical Engineering, Sichuan University, Chengdu
[2] School of Information Engineering, Hubei Minzu University, Enshi
关键词
Coordinated frequency regulation; HVDC power transmission; Power-frequency characteristic; Prediction model; Rotating reserve; Wind power penetration;
D O I
10.16081/j.epae.202009021
中图分类号
学科分类号
摘要
Aiming at the problem that the frequency of asynchronous interconnection HVDC(High Voltage Direct Current) sending system with large-scale wind power is easy to exceed the limit,a multi-source coordinated frequency regulation strategy based on prediction model is proposed. The influence of wind power penetration and HVDC outgoing power ratio on frequency regulation is analyzed,and the coordination of various frequency regulation measures under large disturbances is discussed. Considering the regional control deviation constraints of HVDC power transmission on a long time scale,the rotating reserve capacity of wind turbine and thermal power unit is optimized. Considering the fast controllability of power electronic devices on a short time scale,the frequency regulation parameters of wind turbine and HVDC power transmission are dynamically adjusted to make the system frequency run at a reasonable level. The frequency deviation obtained from the prediction model is divided into different regions according to the size of the region,and different frequency regulation strategies are adopted in different regions to ensure that the rotating reserve capacity of the sending system is reasonable and the frequency dynamic response index is compliant. The simulation model of the HVDC sending system with wind power is built on PSCAD/EMTDC platform. The simulative results verify the effectiveness and accuracy of the proposed strategy. © 2020, Electric Power Automation Equipment Press. All right reserved.
引用
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页码:56 / 63
页数:7
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