Power quality enhancement in micro grids by employing MPC-EKF

Improvement power quality in Electrical Distribution Grids with DG by DVR based on ANN Controller

Abstract: Unified Power Flow Controller (UPFC) is one of the FACTS devices which plays a crucial role in simultaneous regulating active and reactive power, improving system load, reducing congestion and cost of production. Therefore, determining the optimum location of such equipment in order to improve the performance of the network is significant. In this paper, WCA algorithm is used to locat...

A New Approach for Reactive Power Control of Single Phase Transformerless Inverter to Modify Power Quality in Stand Alone Micro-Grids with Current Leakage Elimination

Nowadays there has been an increasing interest in transformerless inverter for grid-connected photovoltaic (PV) system due to low cost, high efficiency and light weight. One of the reasons describe the grid behavior is capability of reactive power control by inverter. According to the standard VDE-AR-N 4105, grid-tied PV inverter of power rating below 3.68KVA, should attain power factor (PF) fr...

Power Quality Enhancement Through Robust Symmetrical Components Estimation in Weak Grids

Improvement of Power Quality Index in Distributed Power Grids

This project proposed the new distortion power quality index to replace the previously proposed index. Its computation was carried out based on the load composition rate (LCR) and Euclidean norm of total harmonic distortions (THDs) of the measured voltage and current waveforms at the point of common coupling (PCC). Based on the proposed PQI, the harmonic pollution ranking, which indicates how m...

Power Quality Enhancement using Custom Power Devices

A Power quality problem is an occurrence manifested as a nonstandard voltage, current or frequency that results in a failure or mis-operation of end use Equipments. Utility distribution networks, sensitive industrial loads, and critical commercial operations all suffer from various types of outages and service interruptions which can cost significant financial 1oss per incident based on process...