Apparent power ratio of the Shunt Active Power Filter

Abstract

The main purpose of this paper is the evaluation of the Shunt Active Power Filter apparent power ratio between the apparent power generated by the source power system to the load and the compensation apparent power produced by the shunt APF to force the currents circulating toward the source to be sinusoidal and balanced. This ratio allows defining the compensations capability for different perturbations in AC power system such as current unbalance, phase shift current and undesired harmonics generated by non linear load. This capability is determined by the maximum rate of the apparent power that can be delivered. In this paper a method of evaluation of this ratio is proposed, it is based on the definition of the effective apparent power as defined in IEEE 1459-2000 which was proved to be a suitable amount to be concerned in the design process of different devices.

An Optimization Algorithm to Determine Apparent Power of Active Filter

“…The problems caused by harmonics, interharmonics, and cos φ can be resolved using a shunt active filter connected to the network in parallel to the nonlinear load [7][8][9][10][11][12][13][14][15][17][18][19][20].…”

“…In this context, the load power factor at the node connecting the power supply system of consumers to the supply network is lower than the standard value established for consumers. In [8][9][10][11], the authors use the active filter to compensate for reactive power and reduce harmonics. The authors of these papers do not consider active power losses due to reactive power transmission through the electrical network.…”

Evaluation of Critical Clearing Time of Power System Equipped With a Series FACT Devices

“…A number of Flexible AC Transmission System (FACTS) controllers, based on the rapid development of power electronics technology, have been proposed for power flow control in steady state and dynamic state. (Chen, 2011;Kouzou et al, 2010;Kumkratug, 2010a;Omar et al, 2010;Zhihuan, et al, 2010;Osuwa and Igwiro, 2010). They have proposed many methods to improve stability of power system such as load shedding, High Voltage Direct Current (HVDC), Flexible AC Transmission system (FACTS), etc (Al-Husban, 2009;Barbuy et al, 2009;Hannan et al, 2009;Kumkratug, 2010b;Mohammadi-Ivatloo, 2009;Sahoo, et al, 2010;Zarate-Minano et al, 2010).…”