Wide area coordinated control for low-frequency oscillations damping in a wind-integrated power system

Abstract

The increasing wind integration in present grids to generate clean energy escalates the problem of low-frequency oscillations (LFOs) in the system. Here, a wide area-based coordinated control strategy of power system stabilisers (PSSs) and doubly fed induction generator's (DFIGs) power oscillation dampers (PODs) is presented to improve the system damping. An improved eigenvalue-based objective function is employed to optimally tune the variables of the controller using whale optimisation algorithm (WOA). The impact of DFIG location and thus the suitable wind farm locations are also found out using eigenvalue analysis and dynamic sensitivity analysis. The results are investigated on IEEE 68 bus test system highlighting the effectiveness of proposed strategy for a wide range of operating scenarios.

Keywords

• oscillations
• asynchronous generators
• sensitivity analysis
• optimisation
• damping
• power system stability
• power system control
• eigenvalues and eigenfunctions
• power generation control
• wind power plants
• clean energy
• low-frequency oscillations
• wide area-based coordinated control strategy
• power system stabilisers
• system damping
• dfig location
• ieee 68 bus test system
• wind-integrated power system
• doubly fed induction generator
• wind farm locations
• power oscillation dampers
• whale optimisation algorithm
• eigenvalue analysis
• dynamic sensitivity analysis
• operating scenarios
• objective function