Pada masa ini, terdapat banyak isu-isu yang berkaitan dengan kualiti kuasa yang menjadi
kebimbangan utama. Dalam projek ini, penyelewengan harmonik dan voltan mengendur
dianalisis dalam usaha untuk meningkatkan kecekapan tenaga. Siasatan tersebut telah
dijalankan di Pusat Pengajian Kejuruteraan Elektrik dan Elektronik, Universiti Sains
Malaysia yang mempunyai bil elektrik yang tertinggi berbanding Pusat Pengajian lain di
Kampus Kejuruteraan. The Fluke Power Quality Analyzer 43B single plase digunakan
untuk mengumpul dan mengukur data. Dalam usaha untuk mengawal had herotan
harmonik, IEEE standard digunakan untuk membandingkan nilai Total Demand Distortion
(TDD) standard dengan nilai Total Demand Distortion (TDD) pada Point of Common
Coupling (PCC). Daripada analisis, pengubah 1 mempunyai kualiti kuasa ketidakcekapan
manakala pengubah 2 mempunyai kecekapan kualiti kuasa dalam jangka penyelewengan
harmonik. Daripada analisis, ia juga mendapati bahawa peratusan voltan nominal dari
setiap papan agihan mempunyai nilai lebih tinggi daripada pelbagai standard, bermakna
semua papan agihan mempunyai nilai lebih tinggi daripada pelbagai standard, ia
menunjukkan bahawa semua papan agihan di Pusat Pengajian Kejuruteraan Elektrik dan
Elektronik mempunyai kecekapan kualiti kuasa dari segi mengendur voltan. Akhir sekali,
beberapa cadangan seperti kotak hitam dengan di dalam kapasitor, penapis harmonik,
pembetulan faktor kuasa, keseimbangan zig-zag reaktor, harmonik pengubah
mengurangkan dan menyekat penapis neutral disediakan untuk meningkatkan kualiti kuasa
ketidakcekapan dari segi herotan harmonik di Pusat Pengajian Kejuruteraan Elektrik dan
Elektronik.
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There are many issues that are related to power quality which of main concern
nowadays. In this project, the harmonic distortion and voltage sag are analyzed in an effort
to improve the energy efficiency. The investigation was undertaken at School of Electrical
and Electronic, Universiti Sains Malaysia which has the highest electricity bills compared
to the other Schools at the Engineering Campus. The Fluke Power Quality Analyzer 43B
Single Phase is used to collect and measure the data. In order to control the limits for
harmonic distortion, IEEE standard is applied for comparing the standard Total Demand
Distortion (TDD) value with the Total Demand Distortion (TDD) value at Point of
Common Coupling (PCC). From the analysis, transformer 1 has power quality inefficiency
whereas transformer 2 has power quality efficiency in term of harmonic distortion. From
the analysis, it was also found that the percentages of nominal voltage from each
distribution boards have higher value than the standard range, meaning that all distribution
boards have higher value than the standard range, it indicated that all distribution boards at
School of Electrical and Electronic have power quality efficiency in term of voltage sag.
Finally, some suggestions such as black box with capacitor inside, harmonic filter, power
factor correction, balancing zig-zag reactors, harmonic mitigating transformer and neutral
blocking filter are provided to improve the power quality inefficiency in term of harmonic
distortion at School of Electrical and Electronic.
A study of power quality at school of electrical and electronic, universiti sains malaysia, engineering campus / Lee Wei Shen