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Power quality is an importance term used for measuring quality of Electrical supply to an industrial, domestic and commercial loads. In an Electrical industry, Power quality is primarily a main concern. The power quality issue occurs when the system load in the power system is affected with problems such as transients, harmonics and voltage sag and swell. Hence the power quality issues needed to be...
Most of the dispersed generation systems (DGS) have smaller installation capacity and have to be connected to the distribution network to supply electric power into the utility as well as local loads. When the DG is interconnected in parallel with the utility distribution system, some operating conflicts might arise that affect the system power quality. This paper investigate the effect of DG on the...
This paper deals with modeling and simulation technique of a Dynamic Voltage Restore (DVR). The DVR is a dynamic solution for protection of critical loads from voltage sags / swells. The DVR restores constant load voltage and voltage wave form by injecting an appropriate voltage. Present novel structure improves power quality by compensating voltage sag and voltage swells. This paper discussed abc...
Hydro-Quebec aims saving energy by controlling the voltage level and by managing the reactive power (vars) in the distribution network. For this, it will use a VVC system, which requires a permanent surveillance of the voltage level at the end of the distribution feeder and the installation of switching shunt capacitor banks.
This paper deals with the design, analysis and simulation of an online voltage envelope estimator and an online feed-forward neural network (FFNN) controller based distributed static compensator (DSTATCOM) controller. Existing controllers such as PI controller and offline neural network controller are fixed structures and provide satisfactory control only for certain problems for which they are designed...
A new controller for a dynamic voltage restorer (DVR) is proposed in this paper. The controller allows minimisation of DVR injected active power, and stabilisation of DC side voltage. It allows also recharging a DC side using no extra recharging circuit. The controller works according to the progressive phase advance strategy, and since it does not require complicated numerical computations, the controller...
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