Stabilizer design based on flywheel energy storage system with multiple operations for multi-machine power systems

Abstract

Due to the issue of no guarantee of robustness for the flywheel energy storage system (FESS)-based stabilizer designed at one special operation level, an improved method concerning multiple operations was proposed to select the best installing location, damping control loop, feedback signal robustly and to tune FESS-based stabilizer parameters. Based on linearized model with FESS and application of damping torque analysis, the maximum of all of the minimum damping torque indices under multi-operation conditions is the selection index of FESS installing location, damping control loop and feedback signal, and the operation that had little change on the real part of eigenvalue is the condition to tune FESS-based stabilizer parameters. Moreover, a four-machine power system with FESS was investigated. The results indicate that power system oscillations are suppressed effectively by FESS-based stabilizer designed by the method under multiple operations. It is also seen that the proposed method is effective and robust.

Feasibility Analysis on FESS Damping for Power System Oscillation

“…A four-machines power system was investigated in this paper [11], shown in Fig. 4, assuming FESS connected at node 7.…”