Mitigation Of Power Quality Disturbances For Grid Connected Hybrid Solar Wind System Using Dvr

Abstract

Islanding refers to the disconnection of the microgrid from the mains, including the generation of loads and power distribution. Whenever there is a fault or maintenance is required, island-island is required. In normal or stable mode, the system operates in constant current control mode. After exercise, the system switches to voltage control mode. There are several methods for detecting island-island, such as active and passive methods. In this article, the SVM detection technology used to detect island conditions is performed. This article also explains in detail the benefits of support vector machine method in island detection. Islanding is the process of creating power islands as part of a supply system in case of widespread interference in the main network. In the case of island, even in case of failure of the mains, the uninterrupted power supply to the critical load can be maintained. In the event of a fault in the main grid, the grid will be automatically segmented and the DG source will deliver the critical load until the main grid is resynchronized with GD. Isolated islands can be of two types, intentional islands and unintentional islands.

This proposed work introduces the Dynamic Voltage Restorer (DVR) configuration and control strategy. To recompense for power for each phase discretely, a closed loop PI control law is proposed in the d-q reference frame. The proposed technique provides fast response or effectual case recompense functions. In addition, space vector modulation (SVM) is used to estimate the three-phase voltage to detect voltage drops. By using SVM, voltage drops can drop faster than other conventional technique so, DVR can quickly and accurately reimburse for voltage drops. The results obtained are simulated in Matlab / Simulink, which shows that planned technique can effectively alleviate voltage drops and imbalances in the distribution network.