AN ELASTIC NONLINEAR POWER-SYSTEM STABILIZER

The paper presents a novel, simple, variable structure, self adjusting , squashable error-driven, adjustable gain power system stabilizer (PS S) design. The elastic error-driven and error-scaled PSS design falls in between the categories of bang-bang and linear error scaled variabl e gain. The digital simulation studies were conducted on a single mach ine infinite bus system. From the digital simulation results, the prop osed PSS is shown to be very effective in damping the oscillations and it is robust as it tolerates any system structural and parametric var iations. In addition, the proposed PSS can be easily implemented. The design was simulated and tested using MATLAB simulation package softwa re and compared to conventional analog gain/lead/lag compensator PSS d esign.