Small-Signal Stability Analysis on Grid Connection of DFIG Considering Wind Speed Partition

doi:10.3969/j.issn.1000-7229.2018.07.012

Abstract

Abstract: In order to analyze the influence of grid-connected doubly-fed induction generators （DFIG） in wind farm on small-signal stability of power grid, operation mode of DFIG is divided into two zones below rated wind speed, which are the maximum power tracking zone and the constant angle speed zone. Aiming at the DFIG and infinite bus, 13th-order small signal models in the maximum power tracking zone and the constant angle speed zone are established respectively by Lyapunov linearization method. The influence of control parameters and wind speed on the small-signal stability of the DFIG and infinite bus is compared with the method of eigenvalue analysis. The results show that feasible parameters which can maintain small-signal stability of grid are different in the two zones, and small-signal stability analysis on grid connection of DFIG considering wind speed partition can accurately assess the stability characteristics of the system.

Key words: wind speed partition, wind turbine with doubly fed induction generator, small-signal stability, maximum power tracking zone, constant angle speed zone

CLC Number:

TM 614

JIA Yanbing，LI Yubo，MA Jinbi，TIAN Jinjie，WANG Jinhao，LI Huipeng. Small-Signal Stability Analysis on Grid Connection of DFIG Considering Wind Speed Partition[J]. Electric Power Construction, 2018, 39(7): 97-106.

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