Dynamic response characteristics analysis of the doubly-fed wind power system under grid voltage drop

2016 International Conference on New Energy and Future Energy System

Chen, Y.^1 ; Wang, J.^1 ; Wang, H.H.^2 ; Yang, L.^1 ; Chen, W.^1 ; Xu, Y.T.^1

School of Electrical Engineering, Wuhan University, Wuhan

430072, China^1

Dispatching Control Center, China Southern Power Grid, Guangzhou, China^2

关键词: Control strategies;    Different voltages;    Digsilent/powerfactory;    Double fed induction generator;    Dynamic response characteristics;    Mechanical and electrical;    Security and stability;    Software platforms;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/40/1/012071/pdf
DOI  :  10.1088/1755-1315/40/1/012071

来源: IOP

【 摘 要 】

Double-fed induction generator (DFIG) is sensitive to the disturbances of grid, so the security and stability of the grid and the DFIG itself are under threat with the rapid increase of DFIG. Therefore, it is important to study dynamic response of the DFIG when voltage drop failure is happened in power system. In this paper, firstly, mathematical models and the control strategy about mechanical and electrical response processes is respectively introduced. Then through the analysis of response process, it is concluded that the dynamic response characteristics are related to voltage drop level, operating status of DFIG and control strategy adapted to rotor side. Last, the correctness of conclusion is validated by the simulation about mechanical and electrical response processes in different voltage levels drop and different DFIG output levels under DIgSILENT/PowerFactory software platform.