Estimation of Sensitive Equipment Disruptions Due to Voltage Sags

This paper presents a method for predicting the number of equipment disruptions due to voltage sags in a unit of time based on a concept described in IEC 61000-3-7. The proposed method uses the probabilistic distributions of system disturbance and equipment immunity indices obtained from a unified f...

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Bibliographic Details
Published in:IEEE transactions on power delivery 2007-04, Vol.22 (2), p.1132-1137
Main Authors: LU, Chan-Nan, SHEN, Cheng-Chieh
Format: Article
Language:English
Subjects:
Applied sciences
Costs
Disruption
Disturbance level
Disturbances
Disturbances. Regulation. Protection
Electric potential
Electrical engineering. Electrical power engineering
Electrical power engineering
Engines
Equipment costs
equipment disruption
Exact sciences and technology
fuzzy index
Fuzzy logic
Fuzzy systems
IEC standards
immunity level
Immunity testing
Miscellaneous
Operation. Load control. Reliability
Power electronics, power supplies
Power networks and lines
Power quality
power quality (PQ)
Sag
Scattering
Stochastic processes
Test equipment
Voltage
Voltage fluctuations
voltage sag
Voltage sags
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Summary:This paper presents a method for predicting the number of equipment disruptions due to voltage sags in a unit of time based on a concept described in IEC 61000-3-7. The proposed method uses the probabilistic distributions of system disturbance and equipment immunity indices obtained from a unified fuzzy inference engine to represent the disturbance severity and equipment susceptibility of voltage sags. It takes stochastic behavior of service performance into account in the estimation of equipment disruption. The proposed framework is also applicable if other power-quality indices, such as the voltage sag energy index and voltage sag severity index, are adopted. It can be used as an alternative for performing voltage sag coordination and financial analysis
ISSN:0885-8977
1937-4208
DOI:10.1109/TPWRD.2007.893433