Battery energy storage-based system damping controller for alleviating sub-synchronous oscillations in a DFIG-based wind power plant

Abstract

This paper presents the issue of the Sub-synchronous resonance (SSR) phenomenon in a series compensated DFIG-based wind power plant and its alleviation using a Battery Energy Storage-based Damping Controller (BESSDCL). A supplementary damping signal is developed considering the angular speed deviation and is incorporated into the BESS control system. Wide-area Measurement System data is used to determine the angular speed deviation. A linearized system model is developed to perform eigenvalue analysis, and to detect and examine unstable SSR modes. The variation of wind speed and three-phase fault are also taken into consideration to validate the robustness of the controller. To further verify the efficacy of the proposed damping controller, time-domain simulations are performed using MATLAB/Simulink. The application of the proposed BESSDCL stabilizes all the unstable system modes effectively at wind speeds of 7 m/s, 9 m/s, and 11 m/s, and at 40%, 50%, and 60% series compensation levels, as well three-phase fault conditions.

Smoothing Intermittent Output Power in Grid-Connected Doubly Fed Induction Generator Wind Turbines with Li-Ion Batteries

“…In this context, D 2 stands for the duty cycle in boost mode, and we can determine its value using Equation (36), as indicated in references [84,[86][87][88].…”

“…In reference [36], the researchers investigated the sub-synchronous resonance effect in DFIG-based WPPs and proposed mitigation techniques employing BESS-based damping controllers. Meanwhile, a novel dynamic flywheel system designed for DFIG wind turbines, emphasizing coordinated control of kinetic energy and mechanical torque was introduced in [37].…”