Power Quality Assessment and Enhancement in a Grid Connected Renewable Energy System Using Dynamic Voltage Restorer

2014 ◽  
Vol 573 ◽  
pp. 716-721
Author(s):  
S. Rajeshbabu ◽  
B.V. Manikandan
Keyword(s):  
Neural Network ◽  
Renewable Energy ◽  
Power Quality ◽  
Energy System ◽  
Dynamic Voltage Restorer ◽  
Renewable Energy System ◽  
Voltage Restorer ◽  
Point Of Common Coupling ◽  
Dynamic Voltage ◽  
Common Coupling

Renewable energy sources provide the additional/satisfy the power to the consumer through power electronics interfaces and integrated with the grid. In grid integration power quality is one of the important parameter that need to be paying more attention. This proposed work focuses on power quality issues in a grid connected renewable energy system. Power quality issues will arises due to many factors here with the by introducing a fault condition in a grid connected renewable energy system the measurements were made at the point of common coupling and the mitigation is done with the help of a dynamic voltage restorer. The dynamic voltage restorer is a device which offers series compensation activated by neural network based controller. The sag improvement and the total harmonic assessment were made at the point of common coupling. Keywords: Neural network, Point of common coupling, Renewable energy source, Power quality, Dynamic voltage restorer ,electric grid.

scholarly journals Performance improvement of off-grid hybrid renewable energy system using dynamic voltage restorer

2020 ◽  
Vol 59 (3) ◽  
pp. 1567-1581 ◽  
Author(s):  
Wael S. Hassanein ◽  
Marwa M. Ahmed ◽  
M. Osama abed el-Raouf ◽  
Mohamed G. Ashmawy ◽  
Mohamed I. Mosaad
Keyword(s):  
Renewable Energy ◽  
Performance Improvement ◽  
Energy System ◽  
Dynamic Voltage Restorer ◽  
Hybrid Renewable Energy System ◽  
Renewable Energy System ◽  
Voltage Restorer ◽  
Dynamic Voltage ◽  
Hybrid Renewable Energy

scholarly journals VOLTAGE COMPENSATION USING ARTIFICIAL NEURAL NETWORK: A CASE STUDY OF RUMUOLA DISTRIBUTION NETWORK

2016 ◽  
Vol 36 (1) ◽  
pp. 178-185
Author(s):  
R Uhumnwangho ◽  
E Omorogiuwa ◽  
G Offor
Keyword(s):  
Neural Network ◽  
Artificial Neural Network ◽  
Power Quality ◽  
Distribution Network ◽  
Dynamic Voltage Restorer ◽  
Port Harcourt ◽  
Voltage Restorer ◽  
Dynamic Voltage ◽  
Artificial Neural ◽  
Rivers State

 A study of hourly voltage log taken over a period of six months from Rumuola Distribution network Port Harcourt, Rivers State indicates that power quality problems prevalent in the Network are undervoltage/voltage sags and overvoltage/voltage swells. This paper aims at addressing these power quality problems in the distribution network using artificial neural network (ANN) controller based dynamic voltage restorer (DVR). The artificial neural networks controller engaged to controlling the dynamic voltage restorer were trained with input and output data of proportional integral (PI) controller and of unit amplitude generator obtained during simulation. All simulations and modeling were carried out in MathLab/Simulink. Proposed dynamic voltage restorer was tested with replicated model of Rumuola substation by simulating with sample of average voltage for Omerelu, Waterlines, Rumuola, Shell Industrial and Barracks feeders. Simulation results showed that DVR is effective in compensating for under-voltage and over-voltage in Rumuola Distribution network Port Harcourt, Rivers State. http://dx.doi.org/10.4314/njt.v36i1.23

scholarly journals Power quality enhancement using Artificial Neural Network (ANN) based Dynamic Voltage Restorer (DVR)

2021 ◽  
Vol 309 ◽  
pp. 01100
Author(s):  
Chaitanya Kasala ◽  
Vinay Kumar Awaar ◽  
Praveen Jugge
Keyword(s):  
Neural Network ◽  
Artificial Neural Network ◽  
Power System ◽  
Power Quality ◽  
Superior Performance ◽  
Dynamic Voltage Restorer ◽  
Voltage Restorer ◽  
Dynamic Voltage ◽  
Artificial Neural ◽  
Artificial Neural Network Ann

The power quality, which can affect consumers and their utility, is a key concern of modern power system. The sensitive equipment is damaged by voltage harmonics, sag and swell. Therefore, as usage of sensitive equipment has been increasing, power quality is essential for reliable and secure operation of the power system in modern times. The potential distribution flexible AC transmission system (D-FACTS) device, a dynamic voltage restorer (DVR), is widely used to address problems with non-standard voltage in the distribution system. It induces voltages to preserve the voltage profile and ensures continuous load voltage. In this paper, the voltage sag and swell is compensated by DVR with an artificial neural network (ANN) controller. For the generation of reference voltage for voltage source converter (VSC) switching, and for the voltage conversion from rotating vectors to stationary frame, synchronous reference frame (SRF) theory is applied. The DVR Control Strategy and its performance is simulated using MATLAB software. It is also shown a detailed comparison of the ANN controller with the conventional Proportional Integral controller (PI), which showed ANN controller’s superior performance with less Total Harmonic Distortion (THD).

scholarly journals Voltage Compensation Using Dvr with Modified Switching Band Control

2018 ◽  
Vol 7 (4.24) ◽  
pp. 53
Author(s):  
Sura.Srinivasa Rao ◽  
Choppavarapu.Sai Babu
Keyword(s):  
Switching Frequency ◽  
Simulation Studies ◽  
Dynamic Voltage Restorer ◽  
Switching Losses ◽  
Voltage Restorer ◽  
Three Phase ◽  
Voltage Compensation ◽  
Point Of Common Coupling ◽  
Dynamic Voltage ◽  
Common Coupling

This paper presents mitigation of voltage related Power Quality (PQ) issues by using Dynamic Voltage Restorer (DVR). Three phase four wire DVR with modified switching band controller is proposed. A modified filter circuit band controller is proposed for reducing the switching losses, constant switching frequency maintenance and corresponding simulation studies are carried out. Variable hysteresis band (modified band) controller generates accurate injected voltages by using system parameters and low error value between reference injected voltages, actual injected voltages can be achieved, which helps in smoothening and minimizing ripples in PCC (Point of common coupling) voltages. The obtained simulation results are presented.

scholarly journals Power quality improvement using dynamic voltage restorer in electrical distribution system: an overview

2020 ◽  
Vol 17 (1) ◽  
pp. 86
Author(s):  
Ali Basim Mohammed ◽  
Mohd Aifaa Mohd Ariff ◽  
Sofia Najwa Ramli
Keyword(s):  
Renewable Energy ◽  
Quality Improvement ◽  
Power Quality ◽  
Distribution System ◽  
Dynamic Voltage Restorer ◽  
Power Distribution System ◽  
Electrical Distribution ◽  
Voltage Restorer ◽  
Power Quality Improvement ◽  
Dynamic Voltage

This paper represents a review of the dynamic voltage restorer for power quality improvement in the electrical distribution system. Over the past 50 years, issues concerning power quality have steadily increased, to prevent the effect of the voltage disturbances, some of the devices are put as a solution to these problems such as distribution static compensator (D- STATCOM), solid-state transformer (SST), uninterruptible power supply (UPS), dynamic voltage restorer (DVR). The DVR is one of the economic solutions to overcome the voltage disturbances like voltage sag/swell and harmonics. It is widely used to mitigate the voltage disturbances in the power distribution system, especially in the medium and low distribution networks. This paper aims to review the implementation of the DVR in the system integrated with renewable energy resources. This is important because the future of electricity business is moving towards renewable energy and also provides a thorough discussion of the typical components, controllers, compensation methods, and the application of DVR. The extensive review of the technology aims to ease and speed up the development and the advancement of the DVR in the near future.

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