Overcurrent protection of capacitors applied on industrial distribution systems

Journal Article · · IEEE Transactions on Industry Applications (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/IAS.1991.178104· OSTI ID:6220166

Mendis, S R; Bishop, M T ^[1]; McCall, J C; Hurst, W M ^[2]

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1. Cooper Power Systems, Franksville, WI (United States). Systems Engineering Group
2. Cooper Power Systems, Greenwood, SC (United States). McGraw-Edison Power Capacitors

Many industrial facilities apply power factor correction capacitors to enhance their electrical system efficiency. Power factor improvement, power loss reduction, release of system capacity, and voltage improvement can all be achieved by applying capacitors in industrial plants. Protection of these capacitor banks against excessive overcurrents is a critical part of the safe and reliable operation of the bank. This paper reviews different considerations in the selection of capacitor fuse applications and the philosophies behind them. Individual and group fusing are discussed. Continuous current, transient current, fault current, tank rupture curve coordination, voltage on good capacitors during a fault, energy discharged into a failed unit, outrush current, and coordination with unbalance detection schemes are topics covered. Examples of actual applications of capacitors in industrial distribution systems are presented throughout the paper.

• OSTI ID: 6220166
• Journal Information: IEEE Transactions on Industry Applications (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Transactions on Industry Applications (Institute of Electrical and Electronics Engineers); (United States) Vol. 29:3; ISSN 0093-9994; ISSN ITIACR
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
240200* -- Power System Networks
Transmission & Distribution-- (1990-)
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320303 -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Equipment & Processes
CAPACITORS
CONDUCTOR DEVICES
CONTROL
CURRENTS
EFFICIENCY
ELECTRIC CURRENTS
ELECTRIC FUSES
ELECTRICAL EQUIPMENT
ELECTRICAL FAULTS
ELECTRICAL TRANSIENTS
ENERGY EFFICIENCY
EQUIPMENT
EQUIPMENT PROTECTION DEVICES
INDUSTRIAL PLANTS
MITIGATION
OVERCURRENT
PERFORMANCE
POWER DISTRIBUTION SYSTEMS
POWER FACTOR
TRANSIENTS
USES
VOLTAGE DROP