86-1987 IEEE Recommended Practice: Definitions of Basic Per-Unit Quantities for AC Rotating Machines

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Organization: IEEE - Institute of Electrical and Electronics Engineers, Inc.
Publication Date: 16 February 1987
Status: inactive
Page Count: 14
Page(s): 1 - 14
ICS Code (Electrical engineering (Vocabularies)): 01.040.29
ICS Code (Electrical engineering in general): 29.020
ISBN (Online): 978-0-7381-4421-4
DOI: 10.1109/IEEESTD.1987.81029

Abstracts

Standard

The proper selection of base values is fundamental to the usefulness of a per-unit system. Although per-unit quantities have been used for many years by designers of rotating machinery, the base quantities were not standardized, and it was necessary to define them in each publication. A working group of the Rotating Machinery Committee was created to propose a set of standard definitions. In 1961, a proposed standard was published for trial use. A critical review of that proposed standard resulted in ANSI/IEEE Std 86-1975. Recently, systems analysts and some designers of rotating electrical machinery have found it useful to have a single generic model for all types of machines. Therefore, alternate per-unit definitions, using input voltamperes as base power for induction motors, have been included in this new revision, as well as an example of an induction generator.<>

Document History

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86-1987 - IEEE Recommended Practice: Definitions of Basic Per-Unit Quantities for AC Rotating Machines
February 16, 1987 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

The proper selection of base values is fundamental to the usefulness of a per-unit system. Although per-unit quantities have been used for many years by designers of rotating machinery, the base quantities were not standardized, and it was necessary to define them in each publication. A working grou...

86-1975 - IEEE Standard Definitions of Basic Per Unit Quantities for Alternating- Current Rotating Machines
April 29, 1975 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

When machine parameters are expressed in a properly selected per-unit system, the parameters of a wide range of machine sizes fall into relatively narrow ranges even though the actual values of these same parameters may vary over extremely wide ranges. The per-unit system thereby makes possible an e...

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