Rotation Speed Recovery Strategy Based On Variable Power Curve of Inertia Control from DFIG Wind Turbine

2018 2nd International Conference on Power and Energy Engineering

Liu, R.^1,2,3 ; Song, P.^2,3 ; Wang, X.S.^2,3 ; Lin, Z.W.^1

State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, School of Control and Computer Engineering, North China Electric Power University, Beijing

102206, China^1

State Grid Jibei Electric Power Research Institute, North China Electric Power Research Institute Co. Ltd., Beijing

100045, China^2

Grid-connected Oper. Technol. for Wind-Solar Storage Hybrid Syst. State Grid Corp. Key Laboratory, Beijng

100045, China^3

关键词: DFIG wind turbines;    Inertia controls;    Power increase;    Recovery strategies;    Rotation speed;    Simulation and analysis;    Variable power;    Wind power capacity;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/192/1/012014/pdf
DOI  :  10.1088/1755-1315/192/1/012014

来源: IOP

【 摘 要 】

With the increase of wind power capacity incorporated into the grid, the permeability of wind power increases continuously, which leads to the reduction of the equivalent inertia of the system. A new strategy of recovering rotor speed that increases the output power by modifying the variable power curve is proposed in this paper, which decreases the drop of the active power. So as to reduce the secondary frequency dips caused by the sudden drop of the active power when the speed restores. The paper optimizes the secondary frequency dips by modifying the variable power curve continuously. This article simulates this strategy through setting up a system by Simulink. Compared with the traditional recovery strategy, validity of the proposed strategy is demonstrated through simulation and analysis.