Journal ArticleDOI
Rating and design issues of DVR injection transformer
TLDR
In this paper, a novel method is proposed to find the voltage rating of the transformer as a function of the fundamental frequency, and the inrush current due to saturation is avoided during transient period.Abstract:
The load side voltage disturbances can be effectively mitigated by connecting a dynamic voltage restorer (DVR), a series compensating device. A DVR is realised by a voltage source inverter with DC storage device and a series injection transformer. Rating and design issues of an injection transformer are of prime concern for the proper voltage compensation using DVR. Voltage underrating of the transformer may lead to its saturation, whereas, overrating increases the cost and size of the DVR. The voltage applied to the primary winding of the transformer is a combination of several components of different frequencies. Considering above aspects, rating and design issues are presented in this paper. A novel method is proposed to find the voltage rating of the transformer as a function of the fundamental frequency. Furthermore, the inrush current due to saturation is avoided during transient period. K factor method is used to account for the effects of current harmonics in the transformer. A PSCAD model is used...read more
Citations
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New Topology of a Three Phase Dynamic Voltage Restorer (DVR) for Voltage Swells Mitigation in Electrical Distribution System
Rosli Omar,N.A. Rahim +1 more
TL;DR: In this paper, the authors proposed three topologies of a three phase dynamic voltage restorer (DVR), these new topologies comprises of filtering schemes, dc-link capacitor and three phase four wire of a 3 phase transformer connection.
Proceedings ArticleDOI
Dynamic Voltage Compensator: Transformationless control perspective
TL;DR: In this paper, the compensation performance of a DVC connected to a distribution system, equipped with a simple control based on in-phase compensation and without using any transformations for reference generation, is analyzed through intensive simulation in MATLAB / SIMULINK.
Cascaded multilevel inverter based dynamic voltage restorer for restructured powersystems
D. Mohan Reddy,T. Gowrimanohar +1 more
TL;DR: In this paper, a new control algorithm for the DVR is proposed to regulate the load terminal voltage during sag, swell in the voltage at the point of common coupling (PCC).
METODOLOGIA PARA EL DISEÑO Y DIMENSIONAMIENTO DE UN RESTAURADOR DINÁMICO DE TENSIÓN Methodology to size and design a dynamic voltage restorer
TL;DR: In this article, the authors present the procedure to build and design each component of the DVR in a distribution system with a load sensitive to disturbances, such as voltage dips, overvoltage, or disturbances due to different causes, these events affect sensitive loads which require constant voltage and constant frequency.