Coordinated Reactive Power Control of a Large Wind Farm and a STATCOM Using Heuristic Dynamic Programming

Authors

Wei Qiao, University of Nebraska–LincolnFollow
Ronald D. Harley, Georgia Institute of Technology
Ganesh Kumar Venayagamoorthy, Missouri University of Science and Technology

Document Type

Article

Date of this Version

2009

Comments

Published in IEEE TRANSACTIONS ON ENERGY CONVERSION, VOL. 24, NO. 2. 0885-8969 © 2009 IEEE. Used by permission.

Abstract

A novel interface neurocontroller (INC) is proposed for the coordinated reactive power control between a large wind farm equipped with doubly fed induction generators (DFIGs) and a static synchronous compensator (STATCOM). The heuristic dynamic programming (HDP) technique and radial basis function neural networks (RBFNNs) are used to design this INC. It effectively reduces the level of voltage sags as well as the over-currents in the DFIG rotor circuit during grid faults, and therefore, significantly enhances the fault ride-through capability of the wind farm. The INC also acts as a coordinated external damping controller for the wind farm and the STATCOM, and therefore, improves power oscillation damping of the system after grid faults. Simulation studies are carried out in PSCAD/EMTDC and the results are presented to verify the proposed INC.