IEEE C37.113 Guide for Protective Relay Applications to Transmission Lines
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IEEE C37.113 Document Information:
Title
Guide for Protective Relay Applications to Transmission Lines
The Institute of Electrical and Electronics Engineers, Inc.
Publication Date:
Sep 16, 1999
Scope:
The study of transmission line protection offers an opportunity to examine many fundamental relaying considerations that apply, in one degree or another, to the protection of other types of power system equipment. Each electrical element, of course, will have protection problems unique to itself; however, the concepts associated with transmission line protection are fundamental to all other electrical devices and provide an excellent starting point to examine and appreciate the implementation of all power system protection. The basic relaying characteristics of reliability, selectivity, local and remote backup, zones of protection, coordination, and speed are present in almost all relaying situations. This guide specifically addresses these concepts for transmission line protection, but the ideas are universally applicable. Since transmission lines are also the links to adjacent lines or connected equipment, the protection provided for transmission lines must be compatible with the protection provided for all of these other elements. This requires coordination of settings, operating times, and characteristics. Individual relays, such as overcurrent, directional, and distance, as well as the total protection package, including the communication channels, are all examined in this guide, with appropriate discussion relating to their application and their particular advantages and disadvantages. Special topics, such as the effects of series capacitors or static volt ampere reactive (var) systems and consideration for tripping versus blocking during system power swing conditions, are also discussed.
Keywords:
- protective relaying
- transmission line protection
- relay application
- relaying
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