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Description / Abstract:
This recommended practice encompasses the monitoring of
electrical characteristics of single-phase and polyphase ac power
systems. It includes consistent descriptions of conducted
electromagnetic phenomena occurring on power systems. This
recommended practice presents definitions of nominal conditions and
deviations from these nominal conditions that may originate within
the source of supply or load equipment or may originate from
interactions between the source and the load. Also, this
recommended practice discusses measurement techniques, application
techniques, and the interpretation of monitoring results.
Purpose
The use of equipment that causes and is susceptible to various
electromagnetic phenomena has heightened the interest in power
quality. An increase in operational problems has led to a variety
of attempts to describe the phenomena. Because different segments
of the technical community have used different terminologies to
describe these electromagnetic events, this recommended practice
provides users with a consistent set of terms and definitions for
describing these events. An understanding of how power quality
events impact the power system and end-use equipment is required in
order to make monitoring useful. Proper measuring techniques are
required to safely obtain useful, accurate data. Appropriate
location of monitors, systematic studies, and interpretation of
results will enhance the value of power quality monitoring. The
purpose of this recommended practice is to assist users as well as
equipment and software manufacturers and vendors by describing
techniques for defining, measuring, quantifying, and interpreting
electromagnetic disturbances on the power system.