scholarly journals Power Quality Improvement In 8-Bus System Using DVR and D-STATCOM

2020 ◽  
pp. 28-33
Author(s):  
Suguna R ◽  
Shanmuga Priya M ◽  
Kevin Pearl P ◽  
Surendiran G ◽  
Vijayabalaji R ◽  
...  
Keyword(s):  
Power Quality ◽  
Distribution System ◽  
Voltage Sag ◽  
Peak Time ◽  
Point Distribution ◽  
Root Cause ◽  
Facts Devices ◽  
Power Quality Improvement ◽  
Quality Issues ◽  
Bus System

The deterioration in the quality of the power supplied has the root cause of dilating gap between the supply and the demand. The occurrence of voltage sag and swell is predominant over other power quality issues like harmonics. The simulation of distribution network using FACTS devices for tempering the power quality issues is prevailing these days but there exist speculative theories which don’t provide effective and robust system on voltage stability and power quality control. This paper focuses on simulation of eight-bus system using D-STATCOM and DVR which is connected with closed loop PID and PI controller. The system is simulated to reduce the peak time, settling time and the steady state error thus proves to be effective in mitigating the voltage sag and swell occurring at the load point distribution system. The simulation is processed in the MATLAB software and the comparison of using PI and PID controller is tabulated and the system is implemented using the PIC16F84A micro-controller.

scholarly journals Power Quality Improvement Using Unified Power Quality compensator

2021 ◽  
Vol 10 (4) ◽  
pp. 2803-2809
Keyword(s):  
Power Systems ◽  
Power Quality ◽  
Distribution System ◽  
Supply Voltage ◽  
Voltage Sag ◽  
Harmonic Currents ◽  
Power Quality Improvement ◽  
Power Quality Disturbances ◽  
Quality Of Electric Power

Power quality has become an important factor in power systems, for consumer and household appliances with proliferation of various electric/ electronic equipment and computer systems. The main causes of a poor power quality are harmonic currents, poor power factor, supply voltage variations, etc. In recent years the demand for the quality of electric power has been increased rapidly. Power quality problems have received a great attention nowadays because of their impacts on both utilities and customers. Voltage sag, swell, momentary interruption, under voltages, over voltages, noise and harmonics are the most common power quality disturbances.It proposes a new connection for a unified power quality compensator (UPQC) to improve the power quality of two feeders in a distribution system. It illustrates how UPQC can improve the power quality by mitigating all these PQ disturbances. The proposed configuration of the UPQC is developed and verified for various power quality disturbances by simulating the mode using MATLAB.

scholarly journals Weighted Multi-Objective Index-Based Placement of Power Quality Disturbance Mitigating Devices in DG Environment

2020 ◽  
Vol 11 ◽  
pp. 72-79
Author(s):  
G. Vishwanath ◽  
M. Lokesh ◽  
N. Mohan ◽  
A. D. Kulkarni
Keyword(s):  
Quality Improvement ◽  
Power Quality ◽  
Distribution System ◽  
Multi Objective ◽  
Novel Technique ◽  
Distributed Generators ◽  
Facts Devices ◽  
Overall Stability ◽  
Power Quality Disturbance ◽  
Power Quality Improvement

In recent years, the Electrical Distribution system is operated with the integration of various Distributed Generators close to its working limits. Some of the D-facts devices such as D-STATCOM, DVR, and UPQC are placed in the Distribution system to enhance the power quality and to improve the overall stability of the system but the placement of these D-Facts devices in DG environment is essential for the overall power quality improvement. In this paper, a novel technique is introduced based on weighted multi-objective function with power quality indicators for finding the most sensitive bus concerning power quality disturbance in the Distribution system. The optimal sensitive bus is identified for integration of Power quality disturbance mitigating devices with Rotating and Static Distributed Generators

Simulation of Location of TCSC and UPFC in Fourteen Bus System Using Matlab / Simulink

2011 ◽  
Vol 403-408 ◽  
pp. 3594-3599
Author(s):  
R. Selvarasu ◽  
C.Christober Asir Rajan
Keyword(s):  
Power Quality ◽  
Power Flow ◽  
Voltage Sag ◽  
Unified Power Flow Controller ◽  
Simulation Studies ◽  
Facts Devices ◽  
Thyristor Controlled Series Compensator ◽  
Power Flow Controller ◽  
Bus System

This paper presents the modeling and simulation of 14-bus system using TCSC and UPFC. Thyristor Controlled Series Compensator (TCSC) and Unified Power Flow Controller (UPFC) are included in 14-bus system to improve the power quality of the power system. The voltage sag is created by adding an extra load at the receiving end. This sag is compensated by using FACTS devices like TCSC and UPFC. Improvement in the voltage and power are presented using simulation studies.

Adaptive whale optimization for intelligent multi-constraints power quality improvement under deregulated environment

2019 ◽  
Vol 17 (3) ◽  
pp. 490-514
Author(s):  
Niharika Thakur ◽  
Y.K. Awasthi ◽  
Manisha Hooda ◽  
Anwar Shahzad Siddiqui
Keyword(s):  
Power Quality ◽  
Optimization Algorithm ◽  
Whale Optimization Algorithm ◽  
Quality Improvements ◽  
Content Type ◽  
Facts Devices ◽  
Whale Optimization ◽  
Quality Issues ◽  
Better Than ◽  
Bus System

Purpose Power quality issues highly affect the secure and economic operations of the power system. Although numerous methodologies are reported in the literature, flexible alternating current transmission system (FACTS) devices play a primary role. However, the FACTS devices require optimal location and sizing to perform the power quality enhancement effectively and in a cost efficient manner. This paper aims to attain the maximum power quality improvements in IEEE 30 and IEEE 57 test bus systems. Design/methodology/approach This paper contributes the adaptive whale optimization algorithm (AWOA) algorithm to solve the power quality issues under deregulated sector, which enhances available transfer capability, maintains voltage stability, minimizes loss and mitigates congestions. Findings Through the performance analysis, the convergence of the final fitness of AWOA algorithm is 5 per cent better than artificial bee colony (ABC), 3.79 per cent better than genetic algorithm (GA), 2,081 per cent better than particle swarm optimization (PSO) and fire fly (FF) and 2.56 per cent better than whale optimization algorithm (WOA) algorithms at 400 per cent load condition for IEEE 30 test bus system, and the fitness convergence of AWOA algorithm for IEEE 57 test bus system is 4.44, 4.86, 5.49, 7.52 and 9.66 per cent better than FF, ABC, WOA, PSO and GA, respectively. Originality/value This paper presents a technique for minimizing the power quality problems using AWOA algorithm. This is the first work to use WOA-based optimization for the power quality improvements.

scholarly journals Survey on Microgrid: Power Quality Improvement Techniques

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Chitra Natesan ◽  
Senthil Kumar Ajithan ◽  
Priyadharshini Palani ◽  
Prabaakaran Kandhasamy
Keyword(s):  
Power Quality ◽  
Optimization Technique ◽  
Quality Parameters ◽  
Nonlinear Loads ◽  
Facts Devices ◽  
Power Quality Improvement ◽  
Comprehensive Survey ◽  
Quality Issues ◽  
Distribution Generation ◽  
Definition Of

Microgrid became one of the key spot in research on distributed energy systems. Since the definition of the microgrid is paradigm of the first time, investigation in this area is growing continuously and there are numerous research projects in this moment all over the world. The increased infiltration of nonlinear loads and power electronic interfaced distribution generation system creates power quality issues in the distributed power system. In this paper, a comprehensive survey on microgrid to improve the power quality parameters is taken as the main objective. Furthermore, the detailed investigations are explored in this paper for the enhancement of power quality issues with the help of an optimization technique, filters, controllers, FACTS devices, compensators, and battery storage.

scholarly journals A D-STATCOM for Power Quality Improvement Under Different Fault Conditions

2020 ◽  
Vol 8 (6) ◽  
pp. 1462-1465
Keyword(s):  
Quality Improvement ◽  
Power Quality ◽  
Power Factor ◽  
Distribution System ◽  
Voltage Sag ◽  
Voltage Sags ◽  
Passive Filter ◽  
Power Quality Improvement ◽  
Voltage Swells ◽  
Harmonic Distortions

D-STATCOM has been used to improve the power quality problems, such as voltage sags, voltage swells for different fault conditions. In order to improve the power factor and reduce the harmonic distortions, LCL passive filter is used along with D-STATCOM. The aim of this paper is to compensate the voltage sag and harmonic distortions by designing the D-STATCOM with LCL passive filter across the distribution system. The simulations were performed by using MATLAB/SIMULINK.

Unit Template Based Control of PV-DSTATCOM

2020 ◽  
Vol 13 (1) ◽  
pp. 36-42
Author(s):  
Gunjan Varshney ◽  
Durg S. Chauhan ◽  
Madhukar P. Dave ◽  
Nitin
Keyword(s):  
Power Quality ◽  
Power Factor ◽  
Power Distribution ◽  
Distribution System ◽  
Distribution Systems ◽  
Phase Distribution ◽  
Voltage Regulation ◽  
Photovoltaic Array ◽  
Quality Issues ◽  
Static Compensator

Background: In modern electrical power distribution systems, Power Quality has become an important concern due to the escalating use of automatic, microprocessor and microcontroller based end user applications. Methods: In this paper, power quality improvement has done using Photovoltaic based Distribution Static Compensator (PV-DSTATCOM). Complete simulation modelling and control of Photovoltaic based Distribution Static Compensator have been provided in the presented paper. In this configuration, DSTATCOM is fed by solar photovoltaic array and PV module is also helpful to maintain the DC link voltage. The switching of PV-STATCOM is controlled by Unit template based control theory. Results: The performance of PV-DSTATCOM has been evaluated for Unity Power Factor (UPF) and AC Voltage Control (ACVC) modes. Here, for studying the power quality issues three-phase distribution system is considered and results have been verified through simulation based on MATLAB software. Conclusion: Different power quality issues and their improvement are studied and presented here for harmonic reduction, DC voltage regulation and power factor correction.

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