Computer algorithm for selection of frequency relays for load shedding

Journal Article · Thu Dec 31 23:00:00 EST 1987 · IEEE Comput. Applicat. Power; (United States)

DOI:https://doi.org/10.1109/67.899· OSTI ID:6173546

Jones, J R; Kirkland, W D

A solution technique is described for designing a load-shedding scheme using underfrequency relays to limit the effect of system overloads and a description of each necessary design decision is included in this article. The following background discussion is included to introduce the technique. During normal operation of a power system, the total mechanical power input to the system generators is equal to the sum of the connected loads plus all real power losses. The relationship of input power to loads and losses for operation at a constant frequency is given. Shedding selected portions of load can equalize the imbalance between load and available generation to avoid a possible system collapse. Underfrequency relays distributed throughout the system can be set to detect a decline in frequency and react automatically to drop predetermined portions of load.

• Research Organization: 0166700
• OSTI ID: 6173546
• Journal Information: IEEE Comput. Applicat. Power; (United States), Journal Name: IEEE Comput. Applicat. Power; (United States) Vol. 1:1; ISSN ICAPE
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200104* -- Fossil-Fueled Power Plants-- Components
99 GENERAL AND MISCELLANEOUS
990220 -- Computers
Computerized Models
& Computer Programs-- (1987-1989)
ALGORITHMS
COMPUTER CODES
DESIGN
ELECTRICAL EQUIPMENT
ENERGY LOSSES
ENERGY SYSTEMS
EQUIPMENT
LOAD MANAGEMENT
LOSSES
MANAGEMENT
MATHEMATICAL LOGIC
OVERCURRENT
POWER DISTRIBUTION SYSTEMS
POWER LOSSES
POWER SYSTEMS
RELAYS