POWER SYSTEM STABILISATION BASED ON GA-ANFIS IN GENERATORS

B.ChristyJuliet, D.Vinothini, S.Vidhyashree

Abstract: At Mettur Thermal Power Station, 840 MW of Electricity is produced in 4 units, each of 210 MW capacity, at 15.75 KV, 9000 A. This power is fed into the grid by stepping up with generator transformer at 230KV. The generator terminal voltage and the reactive load flow are controlled by STATIC EXCITATION SYSTEM. One of its main components is AVR. The major function of the AUR is to hold a constant generator output voltage (terminal voltage, Vt) when the VAR loads of the grid varies at the leading and lagging power factors. This is achieved by varying the excitation voltage (Ve) and excitation current (Ie). AVR gives the control signals to the Thyristor blocks which in turn control the excitation voltage to maintain the constant terminal voltage of the generator. This paper work comprises of design of Power System Stabilizers (PSS) with Adaptive Neuro Fuzzy Inference System (ANFIS).The AVR function is carried out by ANFIS in order to damp the low frequency power system oscillations and to provide faster response thereby improving the unit dynamic performance

Keywords: AVR, power system stabilizer, GA-ANFIS.

DOI: https://doi.org/10.15623/ijret.2014.0319136