Modelling and control of doubly fed variable-speed pumped storage units for grid power regulation

Zhao Guopeng; Zhao Qiang; Ren Jiyun; Song Xiaofang; Han Minxiao

Modelling and control of doubly fed variable-speed pumped storage units for grid power regulation

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Author(s): Zhao Guopeng^{1, 2} ; Zhao Qiang² ; Ren Jiyun² ; Song Xiaofang³ ; Han Minxiao^{1, 2}
- Affiliations: 1: State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources , North China Electric Power University , Beijing 102206 , People's Republic of China ;
  2: School of Electrical and Electronic Engineering , North China Electric Power University , Beijing 102206 , People's Republic of China ;
  3: State Key Laboratory of Smart Grid Protection and Control , Nanjing 211006, Jiangsu Province , People's Republic of China
Source: Volume 2017, Issue 13, 2017, p. 745 – 750
DOI: 10.1049/joe.2017.0430 , Online ISSN 2051-3305

This is an open access article published by the IET under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/)

Received 05/10/2017, Accepted 07/11/2017, Published 01/01/2017

With the expending scale of the power grid and the substantial development of renewable energy generation system, the demand for power quality is becoming more and more significant. The doubly fed pumped storage can be an effective method to control the power of the power grid and restrain the power grid fluctuation caused by renewable energy generation. First, this study introduces the structure of doubly fed pumped storage unit, and analyses the mathematical model of reversible hydraulic pump turbine, doubly fed induction generator (DFIG) and control strategy of the converter. On the basis of the model of reversible hydraulic pump turbine and DFIG, control strategies of the dq decoupling and synchronous rotating coordinate system are studied to output the active and reactive power. Second, the models of generating mode and pumping mode for the doubly fed pumped storage unit are established. Third, for the grid power regulation, active power and speed control strategy in generating mode, pumping mode are put forward. Finally, the model of doubly fed pumped storage unit of 300 MW is established in MATLAB/Simulink. The proposed control strategy is verified by the simulation results.

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Modelling and control of doubly fed variable-speed pumped storage units for grid power regulation

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