Dynamic voltage stability for embedded electrical networks in marine vessels using FACTS devices

Abstract

The present paper focuses on embedded electrical networks (EEN) under electrical fault conditions. Indeed, the EEN can be affected by small or large disturbances, such as a low voltage ride through or a short-circuit in distribution or consumption parts of the embedded network. In fact, these problems can lead to the network instability and also affect the efficiency of marine vessels. In this work, the EEN can be converted into a flexible network by implementing the dynamic compensation devices. These devices can be considered as a synchronous machine that exchanges only the reactive power with EEN. Indeed, this compensation equipment entitled “Flexible AC Transmission System (FACTS)”, and it is used to improve the dynamic voltage stability of EEN. In this paper, the electrical network performances on the marine vessels are improved when the EEN is affected by small or large disturbances. Moreover, these improvements are achieved by integrating the automatic voltage regulator for ensuring the transient voltage stability, while the static VAr compensator (SVC) and static synchronous compensator (STATCOM) are implemented on the bus-bar of EEN to improve the dynamic voltage stability of the electrical network. The results of this study are obtained by using “Simulink/Matlab” software and a comparative analysis between the efficiency of SVC and STATCOM devices on the EEN stability is also presented.