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Ground-fault protection of insulated high-voltage power networks in mines

Journal Article:

Abstract

Safety of power networks is discussed in underground black coal mines in Poland. Safety in mines with a long service life was compared with safety in mines constructed since 1950. Power networks and systems protecting against electric ground-faults in the 2 mine groups are comparatively evaluated. Systems for protection against electric ground-faults in mine high-voltage networks with an insulated star point of the transformer are characterized. Fluctuations of resistance of electrical insulation under conditions of changing load are analyzed. The results of analyses are given in 14 diagrams. Recommendations for design of systems protecting against electric ground-faults in 6 kV mine power systems are made. 7 references.
Authors:
Publication Date:
Sep 01, 1976
Product Type:
Journal Article
Reference Number:
EDB-87-115626
Resource Relation:
Journal Volume: 14:9
Subject:
01 COAL, LIGNITE, AND PEAT; POLAND; UNDERGROUND MINING; POWER SUPPLIES; SAFETY ENGINEERING; COAL MINES; ELECTRIC CABLES; ELECTRIC CONDUCTIVITY; ELECTRIC GROUNDS; ELECTRICAL FAULTS; ELECTRICAL INSULATION; EQUIPMENT PROTECTION DEVICES; POWER SYSTEMS; SAFETY; TRANSFORMERS; CABLES; CONDUCTOR DEVICES; DEVELOPING COUNTRIES; EASTERN EUROPE; ELECTRICAL EQUIPMENT; ELECTRICAL PROPERTIES; ELECTRONIC EQUIPMENT; ENERGY SYSTEMS; ENGINEERING; EQUIPMENT; EUROPE; MINES; MINING; PHYSICAL PROPERTIES; UNDERGROUND FACILITIES; 012032* - Coal, Lignite, & Peat- Underground Mining- Transport & Services- (1987-); 016000 - Coal, Lignite, & Peat- Health & Safety
OSTI ID:
6434899
Research Organizations:
Osrodek Badawczo-Rozwojowy Systemow Mechanizacji, Elektrotechniki i Automatyki Gorniczej, Katowice, Poland
Country of Origin:
Poland
Language:
Polish
Other Identifying Numbers:
Journal ID: CODEN: XY019
Submitting Site:
CLA
Size:
Pages: 19-39
Announcement Date:

Journal Article:

Citation Formats

Pudelko, H. Ground-fault protection of insulated high-voltage power networks in mines. Poland: N. p., 1976. Web.
Pudelko, H. Ground-fault protection of insulated high-voltage power networks in mines. Poland.
Pudelko, H. 1976. "Ground-fault protection of insulated high-voltage power networks in mines." Poland.
@misc{etde_6434899,
title = {Ground-fault protection of insulated high-voltage power networks in mines}
author = {Pudelko, H}
abstractNote = {Safety of power networks is discussed in underground black coal mines in Poland. Safety in mines with a long service life was compared with safety in mines constructed since 1950. Power networks and systems protecting against electric ground-faults in the 2 mine groups are comparatively evaluated. Systems for protection against electric ground-faults in mine high-voltage networks with an insulated star point of the transformer are characterized. Fluctuations of resistance of electrical insulation under conditions of changing load are analyzed. The results of analyses are given in 14 diagrams. Recommendations for design of systems protecting against electric ground-faults in 6 kV mine power systems are made. 7 references.}
volume = {14:9}
journal type = {AC}
place = {Poland}
year = {1976}
month = {Sep}
}