Analysis and comparison of resonance grounding with low resistance grounding

Author

Li, Lei ; Duan, Lixiao ; Zhou, Jingshu ; Zhang, Jian ; Zhou, Wenzhong ; Li, Bo

Author_Institution

Dept. of Electr. & Electron. Eng., North China Electr. Power Univ., Beijing, China

fYear

2010

fDate

20-22 Sept. 2010

Firstpage

1

Lastpage

4

Abstract

The scale of medium voltage networks have been expanding and cables are increasingly used so that nowadays capacitance currents are much greater than before when single line-to-ground faults happen. And the harm of an arcing ground overvoltage is extremely severe in an ungrounded system. To solve the problem put forward, the neutral of a medium voltage network is grounded with petersen coils or low resistance. This article compares the two grounding modes technically. Varieties of operation characters and parameters are researched in the two different grounding systems. Besides, interference to communication is taken into account. Reliability of power supply, security and economy of power grids are discussed. And reference suggestions are proposed for operations of distribution network.

Keywords

arcs (electric); capacitance; coils; earthing; fault currents; overvoltage; power grids; power system economics; power system faults; power system reliability; power system security; resonance; Petersen coil; arcing ground overvoltage; capacitance current; line-to-ground fault; low resistance grounding; medium voltage network; power grid economics; power grid security; power supply reliability; resonance grounding; ungrounded system; Circuit faults; Coils; Grounding; Power supplies; Resistance; Voltage control; Low Resistance Grounding; Medium Voltage Network; Petersen Coils; Resonance Grounding;

fLanguage

English

Publisher

ieee

Conference_Titel

Critical Infrastructure (CRIS), 2010 5th International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-8080-7

Type

conf

DOI

10.1109/CRIS.2010.5617517

Filename

5617517