The terminal voltages vta, vtb, vtc have power quality problems and the dvr injects compensating voltages vca, vcb, vcc through an injection transformer to get undistorted and balanced load voltages vla, vlb, vlc. This paper describes voltage quality improvement by using dynamic voltage restorer dvr and distribution static synchronous compensator dstatcom. Distributed power flow controller dpfc anju antony1, geevarghese kurian mathew2 1pg. Power quality improvement using dvrabstract power quality is one of major concerns in the present era. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext.
Enhancement of power quality using power electronics. Vasantha sena 1 pg student, department of eee, diet college of engineering, anakapalle, visakhapatnam 531 002 2assistant professor, department of eee, diet college of engineering, anakapalle, visakhapatnam 531 002. Electrical power quality and utilisation, journal vol. Power quality improvement using dvr international conference on future technology in engineering icfte16 57 page college of engineering perumon fig 5 represents the voltage injected by dvr into the transmission line in order to mitigate voltage sag. Power quality improvement in low voltage distribution system. The dynamic voltage restorer dvr is a fast, flexible and is better solution to power quality problems. A multifunctional dynamic voltage restorer for power quality.
Now these research going very fast to mitigate the power quality problems with help of power conditioning devices7. One of the major issues in improving power quality in distribution networks is the mitigation of voltage sags. Dvr dynamic voltage restorer among the power quality problems sags, swells, harmonics voltage sags are the most severe disturbances. Control of dvr system the compensation of power quality problems like voltage sag using a dvr can be done by injecting the real power or reactive power 7. Abstractpower quality is one of major problems in the todays scenario. Now a day power quality problem has become a major issue to deal with, in order to maintain quality supply. A dynamic voltage restorer dvr is a seriesconnected custom power device to mitigate voltage sags. Power quality improvement in distribution network using. A comparative study on power quality improvement in a hybrid. Dvr based power quality improvement in distribution system. Power quality improvement using static synchronous compensators where we have focussed on different parameters and two different methods namely pcm and irpt. Mahela and shaik, presented the detailed analysis of various power quality improvement techniques. A comprehensive analysis on the performance of various soft computing based controllers for obtaining better power quality indices was also carried out.
Power quality improvement using dynamic voltage restorer. In order to overcome these problems the concept of custom power devices is introduced recently. It has become importa slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Dynamic voltage restorer dvr can provide the lucrative solution to mitigate voltage sag by establishing the appropriate voltage quality level, necessary. Introduction at present, modern industrial devices are typically based on power electronic devices such as programmable logic controllers and. Pdf power quality improvement using dvr with two fast. Voltage sags and swells in the medium and low voltage distribution grid are considered to be the most frequent type of power quality problems based on recent. The complete background of the compensating devices and power. Dynamic voltage restorer dvr is a solution to improve voltage quality, which is connected in series with the network. Feb 21, 2016 power quality improvement using a dvr dynamic voltage restorer abstract power quality is one of major problems in the todays scenario. On observing the results we conclude that dvr is the one of best device to mitigate the power quality problems. Power quality improvement using sts and dvr in wind energy system. The dvr is a one of the custom power device used for the compensation of voltage sag and swell with an advantage of activereactive power control.
May 25, 2015 power quality improvement using static synchronous compensators where we have focussed on different parameters and two different methods namely pcm and irpt. The simulation result with the proposed control scheme is also shown. Power quality improvement using sts and dvr in wind energy. Voltage sag can be mitigated by voltage and power injections into the distribution system using dynamic voltage restorer dvr. Using dvr with wind turbine can be thought as development for pq enhancement. Hybrid system with dynamic voltage restorer for power quality. Shunt active power filter for power quality improvement in distribution systems issn. Power quality enhancement using dvr and dstatcom techrepublic. Maximum ac loads consumes reactive power, it causes poor power quality in power system. Enhancement of power quality by dvr using ann technique. Shunt active power filter for power quality improvement in. Power quality improvement using dynamic voltage restorer dvr.
Power quality improvement using dvr a thesis submitted to nit rourkela in. A voltage controlled dstatcom for power quality improvement. Voltage quality is the major problem which is very severe for the sensitive electronic equipments. The main power quality problems like voltage sag and swell are studied in this paper.
Power quality improvement using new control algorithm. Besides, the dvr can also be an impressive solution for various pq problems. Voltage quality improvement using dvr chellali benachaiba, brahim ferdi. Power quality improvement by dvr free download as powerpoint presentation. Quality control and continuous improvement 99 quality. Jan 06, 2018 a comparative study on power quality improvement in a hybrid system using dvr and statcom vs. The dvr is a powerful controller that is commonly used for voltage sags mitigation at the point of connection. A new pwm based control scheme has been proposed that only requires voltage measurements the operation of the proposed control method is presented for dstatcom. R2 pg scholar, power systems, department of electrical and electronics engineering v. A static compensator statcom is a flexible ac transmission system facts controller, which. Dynamic voltage restorer can provide the most cost effective solution to deal with the voltage sags and swells that is needed by customer.
College of engineering, karur 641 0, tamil nadu, india1. Power quality improvement using dvr in power system abstract. A dvr based control scheme for powerquality improvement. Power quality improvement using a dvr dynamic voltage restorer. These awards include the malcolm baldridge national quality award, the european quality award, and the deming prize, japans highest quality award. A comparative study on power quality improvement in a hybrid system using dvr and statcom vs. Request pdf power quality improvement using sts and dvr in wind energy system recently, renewable energy has attracted special interest because it seems to. Power quality improvement using a dvr dynamic voltage restorer abstract power quality is one of major problems in the todays scenario. But now a day as more attention is on the distribution system for the improvement of power quality, these facts devices are modified and known as custom power devices. Power quality improvement by dvr force electrical engineering. One of those devices is the dynamic voltage restorer dvr, which is the most efficient and effective modern. Feb 08, 2012 power quality improvement using dvr 1.
Sener agalar, yusuf alper kaplan, power quality improvement using sts and dvr in wind energy system, renewable energy 2017, doi. Pdf in this paper, the authors address the voltage sag of the power quality issue and dynamic voltage restorer dvr, distribution static compensator dstatcom are used for mitigation. Power quality improvement using dvr dynamic voltage restorer. Bapaiah power quality improvement by using dstatcom.
In this paper, an overview of dvr and control scheme used to control the dvr is presented. Subba rao gupta 1 pg student 2 lecturer, 3 assistant professor, 23department of eee 1jawaharlal nehru technological university, anantapur 2 sku college of engineering and technology 3ananthalakshmi institute of technology. The dstatcom is a compensating device which is used to control the flow of reactive power in the distribution systems. A novel multiobjective control of dvr to enhance power. Power quality improvement in low voltage distribution system using dynamic voltage restorer dvr rosli omar faculty of electrical, universiti teknikal melaka ayer keroh, malacca, malaysia. It is recently being used as the active solution for mitigation of power quality problems. Power quality improvement using dstatcom and dvr s. Many modern custom devices are present in order to mitigate such problems. Power quality improvement using a dvr dynamic voltage restorer risha dastagir1, mariam asif2 1,2asst. The power conditioning devices are dynamic voltage restorer dvr, static compensator statcom, and unified power quality.
This study aimed at making improvement in the dvr technology by adopting new control approaches to the system. Power quality improvement using dvr in power system ieee. Power quality improvement using a dvr dynamic voltage. This paper discusses the mitigation of power important power quality problems in the power distribution. This paper presents modeling, analysis, and simulation of dvr in matlabsimulink, which includes pi controller and discrete pwm generator for control purpose of dvr. The dynamic voltage restorer dvr is one of the modern devices used in distribution systems to protect consumers against sudden changes in voltage amplitude. This hybrid system with dvr under neural networks concepts explaining the power transfer capacity and power quality profile improvement in the power systems. It has becomeimportant,especially, with the introduction of sophisticated devices, whose performance is verysensitive tothe quality of power supply. Power quality enhancement using dynamic voltage restorer dvr. Modeling of zeta converter based dvr system for power quality improvement.
This is to certify that the thesis entitled, power quality improvement using dvr submitted by dev kumar taram roll no. Improvement of power quality using dvr in distribution systems. Enhancement of power quality by dvr using ann technique under unbalanced and nonlinear loads 1k. Performance study of dynamic voltage restorer dvr in order. In this paper we design a dynamic voltage restorer dvr which is utilized for power quality improvement. This paper presents modeling and simulation of a dvr for power quality problems. Pdf in this paper, the authors address the voltage sag of the power quality issue and dynamic voltage restorer dvr, distribution static. Among them, dynamic voltage restorer dvr is efficient and cost effective. A power quality problem is an occurrence manifested as a nonstandard voltage, current or frequency that results in a failure or a misoperation of end user equipments.
This paper describes the effectiveness of using dynamic voltage restorer dvr in order to mitigate voltage sags and swells in low voltage distribution systems. Improvement of power quality using dvr in distribution systems p. View and download swann dvr4net user manual online. Research scholar, department of electrical engineering, annamalai university, 1. It has become important with the introduction of complex devices, whose performance is very sensitive to the quality of power supply. Department of electrical and electronics, trinity institute of technology and research bhopal.
Power quality improvement using dstatcom in distribution. All the simulation work is done in matlab software. Dynamic voltage restorer dvr is a custom power device used in power distribution networks to protect consumers from sudden sags and swells in grid voltage. Power quality improvement using dvr semantic scholar. Simulation of dvr for power quality improvement by using. A dvr based control scheme for power quality improvement 1k. Modeling of zeta converter based dvr system for power quality. A group of controllers known as custom power devices such as unified power quality conditioner upqc, dynamic voltage restorer dvr, and distribution static compensator dstatcom are used for improving the quality of electrical power. A comparative study on power quality improvement in a. Request pdf power quality improvement using sts and dvr in wind energy system recently, renewable energy has attracted special interest because it seems to be a positive alternative to fossil.
Dvr or dstatcom is a custom power device cpd, which. When the injected voltage is in quadrature with the current at the fundamental frequency, the compensation is made by injecting reactive power. The dvr is implemented using a three leg voltage source inverter with igbts along with a dc capacitor cdc. Design of dvr for improvement of voltage profile using. The most effective type of cpd devices is considered to be dynamic voltage restorer dvr. Modern generation greatly depends on electrical energy for improving their life. Using dvr in the distribution system for power quality improvement has been analyzed and proposed through many publications 118. Dvr can contribute the fastest and mostly cost effective solution to mitigate voltage disturbances by establishing the suitable voltage quality level which is desired by customer.