The SMES based SAPF is designed and modeled to realize as an efficient compensator for the compensation of pulsed power load demands.
Thus, a control is designed to maximize the energy captured from the wind and to regulate the stator reactive power, contributing to the compensation of the power factor according to grid requirements.
UK Power Networks, supplying customers in London, south-eastern and eastern England, has already said it is writing to all those eligible for compensation because of power cuts.
As the comprehensive compensation equipment of power quality, unified power quality conditioner (UPQC) is especially appropriate for solving the problems above, which can mitigate both voltage and current quality issues such as harmonic, unbalance, voltage swell and sag [4].
However, in order to achieve local compensation of reactive power in AC system, existing references only considered reactive power, which does not exist in DC lines.
The targets include load management and compensation of wind power forecast errors.
However, the application of passive filters for harmonic reduction may result in parallel resonances with the network impedance, over compensation of reactive power at fundamental frequency, and poor flexibility for dynamic compensation of different frequency harmonic components.
The firing pulses for shunt active filter are generated based on a hysteresis based current controller implemented in a DSP controller, so that SAF allows elimination of the harmonics and compensation of reactive power component of load current, ensuing in a supply current which is purely sinusoidal.
Additionally, the effectiveness of the proposed algorithm is tested for reactive power compensation of an autonomous power system.
Harmonics is one of the key parameters that power engineers are concerned about and good power quality insists for compensation of harmonics in power system.
