NDLI: An Approach to the Assessment of Voltage Quality Based on a Modified Power Acceptability Curve

Content Provider	IEEE Xplore Digital Library
Author	Saied, M.M.
Copyright Year	1986
Abstract	Starting with the Computer Business Equipment Manufacturers' Association acceptability curves, a procedure for quantifying the voltage quality is proposed. It is based on using the reciprocal of the permissible time duration for each value of the customer voltage. Since the magnitude of the voltage at any network bus changes with time depending on the load curve, the daily average value of the above suggested voltage quality index will provide a suitable figure of merit for the quality assessment. The analysis starts with the derivation of an analytical expression of the voltage quality index, denoted as voltage penalty function, in terms of the voltage. Then, relations are presented for the dependence of this index on the network as well as of the load parameters. Special interest is given to the load factor, the load power factor, its peak value, and the short-circuit level of the power network. The impact of eventual shunt compensation (and its level) on the voltage quality is discussed for both permanently connected capacitors, and for those which are switched only for a certain duration. In the latter case, the effect of the capacitor switching time point is demonstrated. The compensation level, the time point of application, and its duration are the three parameters for which a detailed sensitivity analysis and optimization for the least voltage daily average penalty are conducted. The applicability of the suggested procedure to nonrepeated events in distribution networks is also addressed
Sponsorship	IEEE Power Engineering Society
Starting Page	613
Ending Page	618
Page Count	6
File Size	527652
File Format	PDF
ISSN	08858977
Volume Number	22
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Power quality Circuit breakers Computer aided manufacturing Capacitors Voltage fluctuations Induction motors Quality assessment Reactive power Sensitivity analysis voltage sags Electrical equipment power-supply quality voltage sag effect assessment
Content Type	Text
Resource Type	Article
Subject	Energy Engineering and Power Technology Electrical and Electronic Engineering

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