ANALISA FREKUENSI RENDAH MENGGUNAKAN ANFIS PADA SSSC TERHADAP PENETRASI TURBIN ANGIN BERBASIS DFIG TERHUBUNG DENGAN SISTEM MULTI-MESIN

The rapid development of wind turbines in the electrical system affects the stability of multi-machine based systems. This is because the use of wind energy is considered more efficient and relatively cheaper than other renewable energy conversions. Doubly-fed Induction Generator (DFIG) is the main choice in the utilization of wind energy into electricity because DFIG utilizes line reactive power to generate dc voltage. However, in practice the wind turbine does not contribute to increasing the inertia of the system. Several analytical methods are carried out to maintain system stability, one of which is low-frequency analysis. In observing the stability of the system, a small signal stability approach is used to determine the signal response that causes oscillations to penetrate the wind turbine. A time-domain scheme based on a nonlinear system model subject to a penetrated wind turbine on a connected bus was used to test the effectiveness of the proposed controller. So it can be concluded that the presence of a device such as Static Synchronous Series Compensator (SSSC) is considered to be able to improve the damping ratio and also reduce the occurrence of oscillations caused by harmonics in the voltage. In addition, the use of SSSC in the system also improves the voltage profile and also the power loss on the line