Reliability measures for system planning

Journal Article · Fri Dec 01 04:00:00 EST 1978 · EPRI J.; (United States)

OSTI ID:6398192

Bhavaraju, M

Outages of generators, transmission lines, or distribution feeders are likely to occur even in the best-planned electricity service. How often, how long, and how extensive these occurrences are all yardsticks to measure system reliability. The utility planner must turn to statistical approaches that use probability--the chance that something will or will not happen. Most of the factors that affect customer service reliability are uncertain, but can be accounted for by using probability theory. This means attempting to recognize and give relative weights to different circumstances. The author says the term quantitative reliability is coming into use, meaning reliability assessment based on probability theory. Utility system planners refer to the yardsticks themselves as reliability measures or indexes. The measurements in the index are defined in planning--the system component and the subsystem. The reliability of the component and subsystem are discussed. There are costs outside the wires--loss of jobs if the outage is of long duration (the industry may even move). In sum, the cost of raising reliability to a particular level depends on the capital and operating cost of equipment required to achieve that higher level. (MCW)

• OSTI ID: 6398192
• Journal Information: EPRI J.; (United States), Journal Name: EPRI J.; (United States) Vol. 3:10; ISSN EPRJD
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200000 -- Fossil-Fueled Power Plants
29 ENERGY PLANNING, POLICY, AND ECONOMY
296000* -- Energy Planning & Policy-- Electric Power
BLACKOUTS
CAPACITY
CONSUMER PROTECTION
COST BENEFIT ANALYSIS
DEMAND FACTORS
DISASTERS
ECONOMIC IMPACT
ECONOMICS
EVALUATION
INVESTMENT
LOAD MANAGEMENT
MANAGEMENT
PLANNING
POWER GENERATION
POWER SYSTEMS
POWER TRANSMISSION
RELIABILITY
SOCIAL IMPACT
STORMS