Terms Used by Power System Protection Engineers (1998) ? PDF

Foreword
Members of the "Power System Relaying Committee" have expressed concern from time to time that recently graduated engineers, technologists, and engineers from other disciplines usually experience difficulty with properly interpreting the terminology used in the area of Power System Protection. The consequence is that they experience difficulty in communicating effectively with their colleagues. To overcome this difficulty, the "Power System Relaying Committee" of the IEEE formed, in January 1991, the "Terms Used by Power System Protection Engineers Working Group". This working group was assigned the task of preparing a special publication which should describe in a straight forward manner the terms commonly used by power system protection engineers. Almost all the terms, discussed in this report, are defined in the IEEE Std I 00-1992 "The New IEEE Dictionary of Electrical and Electronics Terms", the "International Electrotechnical Commission's" publication, "IEC Multilingual Dictionary of Electricity" and standards published by various organizations. The objective of the report was not to redefine the terms but provide brief explanations to assist the recent graduate engineers, technologists and new entrants in the area of power system protection in understanding them properly. To keep the explanations from conflicting with the definitions of terms provided in the standards, the Working Group maintained liaison with the "Terminology Usage Review Working Group" (of the "Relay Standards Subcommittee" of the "Power System Relaying Committee" of the IEEE "Power Engineering Society") that recommends adoption of new definitions for inclusion in the IEEE dictionary and IEEE/ANSI standards. The explanations of the terms were written and then revised several times to avoid conflict with the official definitions and to make the explanations suitable for achieving the intended objectives of this report. The Working Group hopes that this document will be found useful by recent engineering graduates, technologists, and engineers who do not have formal training in Power System Protection but have to interact with protection engineers. M.S. Sachdev Working Group Chair