Analysis of the Neutral Current for Two-Step-Type Poles in Distribution Lines

Author

Park, Keon-Woo ; Seo, Hun-Chul ; Kim, Chul-Hwan ; Jung, Chang-Soo ; Yoo, Yeon-Pyo ; Lim, Yong-Hoon

Author_Institution

KD Power, Seoul

Volume

24

Issue

3

fYear

2009

fDate

7/1/2009 12:00:00 AM

Firstpage

1483

Lastpage

1489

Abstract

One-step-type poles and two-step-type poles are used in KEPCO´s distribution system. An unbalanced current may flow through the neutral wire in three-phase four-wire distribution systems due to unbalanced loads. Generally, the power line and the communication line are installed in close proximity due to the topography of Korea. By means of electrostatic induction, electromagnetic induction, and harmonic induction, the power line induces damaging voltage and current in the communication line. This paper calculates the neutral current in KEPCO´s distribution system by using the electromagnetic transients program (EMTP) by composing various simulated conditions, and the results are verified by vector analysis.

Keywords

EMTP; carrier transmission on power lines; neutral currents; poles and towers; power distribution lines; EMTP; KEPCO´s distribution system; communication line; electromagnetic transients program; neutral current analysis; power line; three-phase four-wire distribution system; two-step-type pole; vector analysis; Electromagnetic Transients Program (EMTP); KEPCO´s distribution system; neutral current; one-step-type pole; two-step-type pole;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/TPWRD.2009.2021031

Filename

5089402