Adaptive Switching Control of Wind Turbine Generators for Necessary Frequency Response

TL;DR

This paper introduces an adaptive control strategy for wind turbines that predicts unsafe frequency responses immediately after power imbalance detection, activating frequency support only when necessary to improve efficiency and safety.

Contribution

It presents a novel differential transformation-based prediction method enabling adaptive switching between operation modes in wind turbines.

Findings

Effective avoidance of unnecessary mode switches.

Ensures adequate frequency response during power imbalances.

Reduces operational costs and improves grid stability.

Abstract

This letter proposes a new control strategy for wind turbine generators to decide the necessity of switches between the normal operation and frequency support modes. The idea is to accurately predict an unsafe frequency response using a differential transformation method right after power imbalance is detected so as to adaptively activate a frequency support mode only when necessary. This control strategy can effectively avoid unnecessary switches with a conventional use of deadband but still ensure adequate frequency response.