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http://dx.doi.org/10.5370/KIEE.2017.66.8.1291

A Study on the Current & Load Unbalance Factor in using Linear & Nonlinear Load  

Kim, Jong-Gyeum (Dept. of Electrical Engineering, Gangneung-wonju National University)
Kim, Ji-Myeong (Graduate School of Industrial Technology, Gangneung-wonju National University)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.66, no.8, 2017 , pp. 1291-1296 More about this Journal
Abstract
Single-phase and three-phase load can be used together in 3-phase 4-wire system. Single-phase and three-phase loads can be classified as linear loads without harmonics and nonlinear with harmonics. Single-phase linear loads are linear loads such as lamps and heat, and single-phase nonlinear loads are power converters such as rectifiers. It is recommended that the distribution of loads in the 3-phase, 4-wire distribution lines be evenly distributed within a certain range. However, harmonic currents generated in a nonlinear load flow on the neutral line and affect the phase current magnitude. The difference in the magnitude of the individual phase current due to the influence of the harmonic current present in the neutral line can produce a difference in current and load unbalance. In this study, current unbalance ratio and load unbalance ratio which can occur when a combination of linear and nonlinear loads are applied to 3-phase 4-wire distribution line are calculated.
Keywords
Current unbalance factor; Harmonics; Linear load; Non-linear load; Load unbalance factor;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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2 Jong-gyeum Kim et al, "Variance of Harmonics Element due to Linear & Non-linear Load Quantity", KIEE, Vol. 51B, No. 8, pp. 441-448, 2002
3 Roger C. Dugan et al., "Electrical Power Systems Quality", McGraw-Hill, 2002
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8 H.W. Dommel, "Electromagnetic Transients Program. Reference Manual (EMTP Theory Book)", BPA 1986.