Characteristics of Voltage Swell in Multigrounded Systems

Author

Acharya, Janak ; Xu, Wilsun

Author_Institution

Dept. of Electr. & Comput. Eng, Alberta Univ., Edmonton, Alta.

Volume

22

Issue

2

fYear

2007

fDate

4/1/2007 12:00:00 AM

Firstpage

1259

Lastpage

1260

Abstract

The effects of multigrounded neutral (MGN) in three-phase distribution systems are not easy to analyze due to the presence of a fourth conductor-the neutral and its multigrounded arrangement. As a result, the mechanism of voltage swell in MGN feeders becomes difficult to understand. The amount of voltage swell in a MGN feeder is affected by unique factors such as the current in the neutral wire and the neutral-to-phase voltage induction. The purpose of this letter is to reveal and quantify all factors that contribute to voltage swell and substation ground potential rise in an MGN system. The results are expected to help utility engineers to understand the impact of MGN on distribution system operations and to assist their deployment of the MGN schemes

Keywords

conductors (electric); distribution networks; power supply quality; substations; conductors; multigrounded neutral systems; neutral wires; neutral-to-phase voltage induction; substation ground potential; three-phase distribution systems; voltage swell; Conductors; Fault currents; Ground penetrating radar; Grounding; Helium; Load flow; Load flow analysis; Substations; Voltage control; Wire; Multigrounded neutral (MGN); ground potential rise (GPR); voltage swell;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/TPWRD.2007.893384

Filename

4141101