Mediterranean Journal of Modeling and Simulation

12

Authors: K. Raju, G.N Srinivas

The distribution system is prone to failures and disturbances due to component failures. Distributed generation (DG) acts as a backup sources to ensure the reliability of electric power supplies. In this paper, proposed an analytical method which is a conditional probability approach. This method used to find the reliability indices of RBTS Bus-2 with multiple DGs. The value of DG locating as a backup generator is quantified in terms of its contribution to the reliability improvement in a distribution network. The reliability improvement is observed based on reliability indices that include SAIFI, SAIDI, CAIDI and ENS. In addition, the value of DG installed at various locations on the feeder from the substation, as well as the impacts of installing, aggregated DGs and multiple DGs are presented. Therefore, distributed generation is expected to play a key role in the industrial, commercial and residential, sectors of the distribution system.

16

Authors: Noureddine Boumalha, Djillali Kouchih, Mohamed Seghir Boucherit

The modeling of a sliding mode observer which is used for the sensorless vector control of double fed induction generator (DFIG). The observer detects stator flux components in the phase stationary reference frame. The estimated rotor speed which is used in speed feedback loop is calculated by an adaptive observer based. The observer is adapted using a simple algorithm. Stability analysis based on Lyapunov theory is performed in order to guarantee the closed loop stability. Simulation tests under load disturbance are provided to evaluate the consistency and performance of the proposed control technique in the low and high speeds.