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IEVref:692-01-11ID:
Language:enStatus: Standard
Term: system security, <of an electric power system>
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Definition: ability to tolerate a credible event without loss of load, over-stress of system components, or deviation from specified voltage and frequency tolerances

Figure 1 – Relationship between service reliability, system adequacy and system security

Note 1 to entry: This concept is normally applied to bulk electric systems.

Note 2 to entry: In North America, security is usually defined with reference to instability, voltage collapse and cascade tripping only.

Note 3 to entry: See also the related term "fault tolerance" (IEV 192-10-09).

Note 4 to entry: This entry was numbered 191-21-03 in IEC 60050-191:1990.


Publication date:2017-12-15
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