| dc.description.abstract | This project is aimed to study and identify power quality related neutral current
and harmonics effects in the Muhibah laboratory building. In this project, it will analyze
the quality of the power distribution board in which supply power to the laboratory
equipment. The equipment that use along the monitoring is Three Phase Power Recorder
(Fluke 1750) to obtain an overview of the resulting waves throughout the analysis
performed. From the resulting waveforms, the analysis will be made to identify the
quality level of power that occurred in the laboratory building is mainly related to the
input is not stable especially that related on harmonics and non-linear loads occurs. This
project mainly to monitoring and investigate power quality problem occur at the
building. The available of lab contained with the linear load and non linear load
(lighting system, air-conditioner system, computer, measurement meter etc.) in the
building make contribution of power quality problem others than incoming power
problem from provider. In this final year project, a study of neutral currents in threephase
distribution network with non-linear loads is presented. Studies show that the
magnitude of the neutral current in three-phase computer power systems depends on the
harmonic content and phase balance of the load currents. Power system problems
associated with high harmonic neutral currents include overloaded four-wire power
feeders and branch circuits, overloaded transformers, voltage distortion, and common
mode noise. Whenever three-phase, wye power systems are used to supply power to
computer systems, the power system design should allow for the possibility of high
harmonic neutral current to avoid potential problems. All the objective of this final year
project has been achieved. To prove the theory, the monitoring of non-linear three-phase
supplying single phase loads has been done. From the monitoring result, there has been
approving that neutral conductor of non-linear load has a lot of neutral current. | en_US |
