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Three-dimensional power system stabilizer (CROSBI ID 158831)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Sumina, Damir ; Bulić, Neven ; Erceg, Igor Three-dimensional power system stabilizer // Electric power systems research, 80 (2010), 7; 886-892. doi: 10.1016/j.epsr.2009.12.014

Podaci o odgovornosti

Sumina, Damir ; Bulić, Neven ; Erceg, Igor

engleski

Three-dimensional power system stabilizer

Power system stabilizers (PSSs) are used to enhance damping of power system oscillations through excitation control of synchronous generator. The objective of the PSS is to generate a stabilizing signal, which produces a damping torque component on the generator shaft. Conventional PSSs are designed with the phase compensation technique in the frequency domain and include the lead-lag blocks whose parameters are determined according to a linearized power system model. The performance of conventional PSSs (CPSSs) depends upon the generator operating point and the system parameters, but a reasonable level of robustness can be achieved depending on the tuning method. This paper presents a new three-dimensional PSS (3D PSS), which uses rotor speed deviation, rotor acceleration and load angle deviation as input signals. The 3D PSS attempts to return the generator to the state-space origin, based on the generator’s trajectory in state-space and the achievement of torque equilibrium. The 3D PSS is robust to system parameters changes. The proposed algorithm was implemented in a digital control system, tested in a laboratory environment on a synchronous generator connected to the power system, and then compared with CPSS. Experimental results show that the proposed PSS achieves better performance than the CPSS in damping oscillations.

power system stabilizer; synchronous generator; excitation control

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Podaci o izdanju

80 (7)

2010.

886-892

objavljeno

0378-7796

10.1016/j.epsr.2009.12.014

Povezanost rada

Elektrotehnika

Poveznice
Indeksiranost