Analysis of voltage sag compensation in distribution systems using a multilevel DSTATCOM in ATP/EMTP

Voltage sags are the most common power quality disturbances in electrical facilities. It may cause malfunction in sensitive equipment and process interruption. The distribution static compensator (DSTATCOM) is a device that can compensate voltage sags by injecting reactive power into distribution sy...

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Bibliographic Details
Published in:Dyna (Medellín, Colombia) Colombia), 2015-08, Vol.82 (192), p.26-36
Main Authors: Rojas-Cubides, Herbert Enrique, Cruz-Bernal, Audrey Soley, Rojas-Cubides, Harvey David
Format: Article
Language:English
Subjects:
ENGINEERING, MULTIDISCIPLINARY
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Summary:Voltage sags are the most common power quality disturbances in electrical facilities. It may cause malfunction in sensitive equipment and process interruption. The distribution static compensator (DSTATCOM) is a device that can compensate voltage sags by injecting reactive power into distribution system. This paper shows the influence on voltage sags characteristics by the presence of twelve-pulse DSTATCOM in the modified IEEE-13 distribution system. The analysis is performed by means of a random generation of disturbances using a MATLAB routine to identify the critical buses of the test system. Further, the DSTATCOM model taking advantage of the available elements from ATP/EMTP software is described. Simulations show that when DSTATCOM is placed directly to affected bus it is possible to obtain a complete mitigation of the voltage sag. Finally, the relation between the reactive power injected by DSTATCOM, the type of voltage sag and the location of affected bus is considered.
ISSN:0012-7353
2346-2183
DOI:10.15446/dyna.v82n192.48566