Implementation of Online Security Assessment - Tools for Reducing the Risk of Blackouts

摘要

ALL POWER SYSTEM OPERATORS STRIVE TO OPERATE THEIR SYSTEMS with a high degree of reliability. Reliability refers to the probability of a power system's satisfactory operation over the long run. It denotes the ability to supply adequate electricity service on a nearly continuous basis, with few interruptions over an extended time period. This may be measured by the frequency, duration, and magnitude of adverse effects on the electricity supply or interruptions of service to customers. Although power systems may suffer occasional disruptions and still be considered reliable (provided the impacts of such disruptions are not too great), the key to reliable operation is to maintain satisfactory security at all times.