A novel algorithm for determination of reactive currents in statcom for voltage flicker mitigation

Abstract EN

Voltage flicker is one of the tormenter disturbance factors in electrical power distribution systems.

The reason for this disturbance is mainly intensive non-linear loads such as electric arc furnaces (EAF).

Synchronous static compensator (STATCOM) is accounted for as a proper technique for mitigation of voltage flicker.

Applying a proper reference current to its control loop is an interfering factor in the quality enhancement of this compensator.

In this paper, a novel algorithm is introduced to determine the reference current which is more precise than the available algorithms; and it leads to a better mitigation of the oscillations in the system buses particularly PCC bus.

Implementation of this algorithm is compared with that of the others and the optimal performance of the proposed algorithm is emphasized.

Finally, inserting a bank of three-phase capacitors in the power system is recommended in order to compensate the amplitude of voltage reduction in the PCC bus due to non-linear loads.