Title :
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
fDate :
7/1/2009 12:00:00 AM
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;
Journal_Title :
Power Delivery, IEEE Transactions on
DOI :
10.1109/TPWRD.2009.2021031
