Title :
Characteristics of Voltage Swell in Multigrounded Systems
Author :
Acharya, Janak ; Xu, Wilsun
Author_Institution :
Dept. of Electr. & Comput. Eng, Alberta Univ., Edmonton, Alta.
fDate :
4/1/2007 12:00:00 AM
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;
Journal_Title :
Power Delivery, IEEE Transactions on
DOI :
10.1109/TPWRD.2007.893384
