Experimental verification of multi-input PSS with reactive power input for damping low frequency power swing

A multi-input power system stabilizer (MPSS) is developed to improve damping of low frequency power swing in long distance power system and to emphasize robustness for changing power system configuration and/or operating conditions. In the MPSS, the deviation of reactive power ΔQ, changing rates of terminal voltage and active power output are added to a ΔP+Δω input type PSS. In this paper, the AVR with the MPSS is applied to 100 kVA micro generator in CRIEPI´s Power System Simulator and is compared with the ΔP+Δω PSS. The MPSS is verified through linearized system analysis and experiment to damp low frequency power swing and to have better performance than the ΔP+Δω PSS