A modified simple algorithm for detection of voltage sags and swells in practical loads

This paper presents the implementation of a modified sliding window algorithm for the detection of sag and swell, by measuring RMS voltage updated every sample. The trigger obtained can be used in conjunction with the main control system of a Dynamic Voltage Restorer (DVR), or as a triggering functi...

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Bibliographic Details
Published in2009 International Conference on Power Systems pp. 1 - 6
Main Authors Meena, P, Rao, K Uma, Ravishankar, D
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.12.2009
Subjects
Control systems
detection
Mathematical model
Power quality
Power system modeling
Power system restoration
Sliding mode control
swell
Testing
trigger
Voltage control
Voltage measurement
Voltage sag
Working environment noise
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Summary:This paper presents the implementation of a modified sliding window algorithm for the detection of sag and swell, by measuring RMS voltage updated every sample. The trigger obtained can be used in conjunction with the main control system of a Dynamic Voltage Restorer (DVR), or as a triggering function to a digital recorder or to a power line conditioner to detect the occurrence of sag and swell. The modeling of the algorithm and test of its functioning to variations in some of the parameters were carried out in a Matlab - Simulink environment. Reliability of the algorithm under conditions of noise and distortion in the input and to three different types of sags was tested on real data captured during events such as starting of induction motor, intermittent loading of welding transformer, and dynamic loading of a captive diesel generator.
ISBN:9781424443307
142444330X
DOI:10.1109/ICPWS.2009.5442667