Selection of system neutral grounding resistor and ground fault protection for industrial power systems

Author

Yu, Luke ; Henriks, Rolf L.

Author_Institution

Ralph M. Parsons Co., Pasadena, CA, USA

fYear

1991

fDate

9-11 Sep 1991

Firstpage

147

Lastpage

153

Abstract

Low-voltage (LV) and medium-voltage (MV) industrial power distribution systems below 15 kV are discussed. The method chosen for system neutral grounding is significant to system performance, operation, maintenance, safety, etc. Solidly grounded (SG), low-resistance grounded (LRG), and high-resistance grounded (HRG) systems are discussed and compared. Selection of neutral grounding resistor values and ground fault protection devices are discussed. It is proposed that a modified high-resistance grounding (MHRG) with ground fault tripping may be the better practice in some industrial applications

Keywords

earthing; power system protection; LV; MV; ground fault protection; ground fault tripping; high-resistance grounded; industrial power systems; low-resistance grounded; low-voltage; maintenance; medium-voltage; neutral grounding resistor; operation; safety; solidly grounded; Fault currents; Grounding; Hazards; Personnel; Power system protection; Power transformer insulation; Relays; Resistors; Surges; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Petroleum and Chemical Industry Conference, 1991, Record of Conference Papers., Industry Applications Society 38th Annual

Conference_Location

Toronto, Ont.

Print_ISBN

0-7803-0193-5

Type

conf

DOI

10.1109/PCICON.1991.162941

Filename

162941