The equivalent model of modern power system is more and difficult to describe its complex stability characteristics, with the continuous promotion conversion. This paper proposes an improved method consider voltage deviation between side load side. On this basis, margin index derived. Therefore, relationship reactive compensation can be analyzed. Finally, correctness effectiveness are verified ...

This paper introduces a new model to improve the wind power plant performance by modeling its reactive demand. It develops probabilistic based on prediction interval help better of demands unit which needs be compensated static VAr compensator (SVC). is made possible use non-parametric neural network (NN) using lower and upper bound estimation (LUBE) method. To avoid instability arising due non...

Nowadays, high importance is given to low energy devices (such as refrigerators, deep-freezers, washing machines, pumps, etc.) that are able to produce reactive power in power lines which can be optimized (reduced). Reactive power is the main component which overloads power lines and brings excessive thermal stress to conductors. If the reactive power is optimized, it can significantly lower th...

In this paper, a new sensorless model reference adaptive method is used for direct control of active and reactive power of the doubly fed induction generator (DFIG). In order to estimate the rotor speed, a high frequency signal injection scheme is implemented. In this study, to improve the accuracy of speed estimation, two methods are suggested. First, the coefficients of proportional-integral ...

The performance of Vector Controlled Induction Motor drive depends on the accuracy of rotor resistance which will vary with temperature and frequency. The MRAS approach using reactive power and flux as a state variable for rotor resistance estimation makes MRAS computationally simpler and easy to design. In this paper, Rotor Flux based MRAS (RF-MRAS) and Reactive Power based MRAS (RP-MRAS) for ...

this paper presents a novel control approach used in shunt active power filter based on variable structure control combined with random pwm technique (rvsc) that provides robust, fast, and more favorable performance for active power filter. this control strategy is compared with two other strategies to show the effectiveness of the introduced methods; pulse width modulated proportional-integral...