State-Space Models for Control Interaction Analysis of DFIG and FSC Wind Parks

This paper presents state-space models for both doubly-fed induction generator (DFIG) and full-scale converter (FSC)-based wind parks (WPs) that can be used to investigate the WP control interaction (CI) problems. The presented models are tested on a series capacitor compensated WP benchmark which exhibits different type instability phenomenon for DFIG and FSC-based WP connection scenarios. The obtained results are validated through simulations using EMTP<sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">®</sup>. The presented models can be used to develop a state-space analysis (SSA) tool for large-scale multi WP systems to identify the potential WP related instability conditions.