Decision analysis model to determine the appropriate level of protection for the small power producer/utility interconnection

Conference · Tue Jan 01 04:00:00 EST 1985

OSTI ID:5237636

Bowe, T R; Iqbal, S; Dapkus, W D; Rizy, D T

This paper formulates a methodology to aid in deciding on the appropriate quality and quantity of protection equipment for a small electric power producer, known in the industry as dispersed storage and generation (DSG), connected on an electric distribution feeder. The decision involves determining whether the benefits (reduced risk of equipment damage and safety hazards) due to additional and/or more reliable relay and circuit breaker components for a protection scheme outweigh the incremental increase in the costs (capital, installation, and maintenance) of the added protection. This methodology is useful to electric utilities, small power producers, and regulatory bodies who must make decisions regarding the technical adequacy as well as the cost-effectiveness of protection requirements for DSG installations. A discrete state-space representation is used to model the response of the DSG and utility protection equipment at and near the DSG/utility interconnection to shunt faults (short circuits) and series faults (open circuits) on a distribution feeder. The probability of the transitions between each of the operating states is a function of the type of fault, its probability of occurrence, its duration, the response of the feeder line protection to the fault, and the response of the DSG protection scheme.

• Research Organization: Decision Systems Associates, Woodside, CA (USA); Systems Control, Inc., Palo Alto, CA (USA). Energy Systems Div.; Oak Ridge National Lab., TN (USA)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 5237636
• Report Number(s): CONF-850704-4; ON: DE85016586
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200100 -- Fossil-Fueled Power Plants-- Power Plants & Power Generation
29 ENERGY PLANNING, POLICY, AND ECONOMY
296000* -- Energy Planning & Policy-- Electric Power
COST
DECISION MAKING
ELECTRIC UTILITIES
ENERGY SYSTEMS
INTERCONNECTED POWER SYSTEMS
MATHEMATICAL MODELS
POWER SYSTEMS
PUBLIC UTILITIES
RISK ASSESSMENT
SYSTEMS ANALYSIS