ANALYSIS OF THE HARMONIC IMPACT GENERATED BY VARIABEL FREQUENCY DRIVE ON POWER QUALITY AND LOSSES AT COAL MILL AREA SUBSTATION 448 INDARUNG 5 PT. SEMEN PADANG

Reisa, Aurellia Frasari and Indra, Nisja and Mirza, Zoni (2020) ANALYSIS OF THE HARMONIC IMPACT GENERATED BY VARIABEL FREQUENCY DRIVE ON POWER QUALITY AND LOSSES AT COAL MILL AREA SUBSTATION 448 INDARUNG 5 PT. SEMEN PADANG. Diploma thesis, Universitas Bung Hatta.

	Text 41. Reisa Aurellia Frasari 1610017111016 Cover.pdf Download (21kB)
	Text 41. Reisa Aurellia Frasari 1610017111016 Abstrak.pdf Download (296kB)
	Text 41. Reisa Aurellia Frasari 1610017111016 BAB I.pdf Download (87kB)
	Text 41. Reisa Aurellia Frasari 1610017111016 BAB II.pdf Restricted to Repository staff only Download (623kB)
	Text 41. Reisa Aurellia Frasari 1610017111016 BAB III.pdf Restricted to Repository staff only Download (512kB)
	Text 41. Reisa Aurellia Frasari 1610017111016 BAB IV.pdf Restricted to Repository staff only Download (763kB)
	Text 41. Reisa Aurellia Frasari 1610017111016 BAB V.pdf Download (145kB)
	Text 41. Reisa Aurellia Frasari 1610017111016 Daftar Pustaka.pdf Download (297kB)

Abstract

Non-linear loads were a source of harmonic current for electricity utilities. The high level of harmonics is very influential on the increasing of losses in electric power and power factors. This study focus on determined the effect of harmonic distortion on power losses and power factor at Indarung 5 substation 448 coal mill area. In this research the type of loads were eleven motors that controlled by VFD used for cooling fan. The harmonic produced by VFD was measured at three points 5U1Q224Q1, 5U1Q224Q3 and 5U1Q32T2. The harmonic from measurement result and calculated according to the IEEE std 519 – 2014. The power losses on the transformer after being affected by harmonics and analysis of the effects of harmonics on power factors. The analysis showed that the highest THDi on the incoming feeder to substation 448 was 10.51% with a allowable limit of 12% and the highest THDi on the primary side of the transformer was 27.68% where the allowable limit of 8%. The highest THDi on the secondary side was 28.59% with a allowable limit of 8%. The true power factor on the secondary side phase R, S and T were 0.90 - 0.93. Total losses on incoming to SS 448 was 3,506.94 kWh, primary side was 2,034.62 kWh and secondary side was 2,128.73 kWh. Base on the results of this study, the harmonic distortion exceed the limit had sighnificant affect on power losses and power factor. Key word : Harmonics, non linear load, total harmonic current distortion, power losses, power factor.

Actions (login required)

View Item