Review of Dynamic Voltage Restorer (DVR) Using Various Control Topologies

Abstract

The main problems with the quality of electricity are voltage fluctuations like the voltage drop and swell, which impact the reliability of electrical networks. The use of dynamic voltage restorer and thus secure sensitive loads are an effective solution to minimize this voltage sag or swell. The base structure of the DVR is created using an inverter, DC connecting condenser and injection transformer. Inverters are used to compensate for the voltage drop / swell and other problems including flickering, current harmonic interference in system. DVR inverter's various property includes voltage levels, unbalanced power compensation requirements and/or dc link voltage requirements. This paper aims to analyze the number of phases, scale, voltage and structure of different inverters and controller topologies. In addition, in this analysis are presented each of the properties of inverters, controllers and compensation.

Coordinated and Optimal Voltage Control in Active Distribution Networks using Fuzzy Logic and Backtracking Search Algorithm

“…The evolving utility climate will keep demanding financial and market forces so that the power system will run more optimally and cost-effective with regard to generation, transmission and distribution and hence it requires a more secure and efficient operation of electricity networks which is crucial to advancement in technology [1]. Substantial distributed generation penetration varying from energy sources, rising demand flexibility, and modernization of transport represent major challenges to current and long term electricity distribution networks.…”