Study on the tuning of Power System Stabilizers(PSSs) in the newly installed Combined Heat and Power Plant(CHP)

Due to the global environmental issue to reduce carbon dioxide emission, combined heat and power (CHP) plants have widely been installed adjacent to load pockets. This kind of CHP plant typically consists of a gas and a steam turbine. Because of inherent complicated structures for the combined power plant, the application of power system stabilizers (PSSs) is not easy. Because it is important to set the parameters of PSSs installed in both sides without any negative impact. Careful consideration of possible interaction with the stabilizers installed in Gas Turbine Generator (GTG) and Steam Turbine Generator (STG) should be needed. In the paper, the whole procedure of PSSs tuning for the newly constructed CHP plant(569MVA) is proposed starting from data setup for tuning the parameters based on raw data provided by manufacturers to field test for performance verification of tuned PSSs.