Enhancement of power quality by dvr using ann technique. Power quality improvements in low voltage distribution networks containing distributed energy resources sumit mazumder ami bsc. Introduction at present, modern industrial devices are typically based on power electronic devices such as programmable logic controllers and adjustable speed drives. Request pdf power quality improvement using dvr voltage sags and swells in the medium and low voltage distribution grid are considered to be the most frequent type of power quality problems. This paper describes voltage quality improvement by using dynamic voltage restorer dvr and distribution static synchronous compensator dstatcom. Power quality improvement using dvr in power system ieee xplore. Power quality improvement by using dvr based on fuzzy. G student, department of electrical engineering, mmmut, gorakhpur, uttar pradesh, india 2associate professor, department of electrical engineering, mmmut, gorakhpur, uttar pradesh, india. Power quality improvement using dvr with two fast vector control. Sener agalar, yusuf alper kaplan, power quality improvement using sts and dvr in wind energy system, renewable energy 2017, doi. 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. Facts devices using power electronics based converters have the task to increase the reliability and quality of electricity supply for consumers 1. The dynamic voltage restorer dvr is one of the fast, flexible, and cost effective solutions available in compensating the voltagerelated power quality problems in power distribution systems. Assistant professor, jeppiaar institute of technology.
The simulations are performed using matlabsimulinks simpower toolbox. One of the major issues in improving power quality in distribution networks is the mitigation of voltage sags. Feb 21, 2016 power quality improvement by using dvr 1. The present work focuses on the last custom power device upqc, which is a combination of a shunt and series device and can combine the functions of these two devices together. The present work is extension to this paper by adding an extra feature of controlling the downstream fault current. Itconsists of the insulated gate bipolar transistor igbt, its gate driver, filter circuit consists of the inductance and capacitor and an isolation transformer. Power quality enhancement using dvr and dstatcom techrepublic. Using dvr with wind turbine can be thought as development for pq enhancement. Apr 11, 2007 this is the simulation model for improve power quality. Voltage sag, swell is generated at source point and. Enhancement of power quality improvement using reducedrating. The dvr is a solid state power electronics switching device consisting of either gto or igbt, a capacitor bank as a energy. Power quality improvement using dvr dynamic voltage restorer.
Power quality improvement in distribution network using. Power quality improvement using sts and dvr in wind energy system. This prespecified quality may contain a combination of specification of following. This paper aims at improving power quality issues of voltage sag, swell, thd at different magnitude for welding power supply using zsource inverter with high frequency isolations for medium power rating devices. Increased use of sensitive and nonlinear loads in electrical power systems and the rapid growth of renewable energy sources lead to poor power quality. Using the dvr to improve the power quality and compensate the load voltage 3. Power quality in the distribution system can be improved by using dvr. Continuous development of high performance equipment power quality disturbances can. Power quality improvement using selfsupported dynamic voltage. Power quality is one of the major concerns in the present power system environment.
Continuous development of high performance equipment power quality disturbances can be as follows. Among these voltage sags and extended under voltages have large negative impact on industrial productivity, and could be the most important type of. Power quality improvement using dvr in power system ieee. Engineering in electrical and electronics engineering submitted in partial fulfilment of the requirements for the degree of. Power quality problems commonly faced are transients, sags, swells, surges, outages, harmonics and impulses. This is to certify that the thesis entitled, power quality improvement using dvr submitted by dev kumar taram roll no. Introduction power quality quandaries in the presentday distribution systems are addressed in the literature 16. Power quality improvement using a dvr dynamic voltage. It is an important consideration in industries and commercial applications. Dvr or dstatcom is a custom power device cpd, which. Performance study of dynamic voltage restorer dvr in. Dynamic voltage restorer dvr can provide the lucrative solution to mitigate voltage sag by establishing the appropriate voltage quality level, necessary.
Power quality improvement using dvr leni babu cherian1, dr bindu s j2, 1asst prof, keyano college, canada 2associate prof. 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. Dynamic voltage restorerbased power quality optimization using differential evolution algorithm. Power quality improvement using a dvr dynamic voltage restorer. Power quality improvement using dstatcom and dvr s.
The most effective type of cpd devices is considered to be dynamic voltage restorer dvr. Shunt active power filter for power quality improvement in. Feb 08, 2012 power quality improvement using dvr 1. Power quality improvement by dvr force electrical engineering. A novel multiobjective control of dvr to enhance power.
Power quality improvement using dvrabstract power quality is one of major concerns in the present era. The most efficient and popular form of energy and the modern society is heavily dependent on the. Power quality improvement using dvr linkedin slideshare. Power quality improvement using self supported and battery supported dvr nisha prakash1, joffie jacob2, reshmi v3 amal jyothi college of engineering, kottayam, india1,2,3 abstract.
Itconsists of the insulated gate bipolar transistor igbt, its gate driver, filter circuit consists of the inductance and capacitor and an. Power quality improvement by dvr submitted by introduction. Analysis and mitigation of power quality issues in distributed. File simulation to show the fast respond achieved by the dvr when evolutionary. Enhancement of power quality improvement using reduced. Sa i su m a n th 1 2 r9 1 a 024 8 teegala krishna reddy engineering college a technical seminar on technical seminar coordinators mr a. Explore power quality with free download of seminar report and ppt in pdf and doc format. In this paper is discussed how power quality enhancement of sensitive load is achieved by applying three versions of autonomous group particle swarm optimization like agpso1, agpso2, and agpso3 for.
This paper describes the effectiveness of using dynamic voltage restorer dvr in order to. Modelling and simulation of dynamic voltage restorer for. 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. Abstract power quality is one of major problems in the todays scenario. Dynamic voltage restorerbased power quality optimization using. This paper starts with the power quality issues, followed by discussions of basic standards. The dynamic voltage restorer dvr is one of the modern devices used in distribution systems to protect consumers against sudden changes in voltage amplitu. 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. Power quality improvement using selfsupported dynamic voltage restorer dvr in distribution system. Abstractpower quality is one of major problems in the todays scenario. Besides, the dvr can also be an impressive solution for various pq problems. The power conditioning devices are dynamic voltage restorer dvr, static compensator statcom, and unified power quality. Description of dynamic voltage restorer the dynamic voltage restorer dvr is a powerful controller that is connected in series using transformer in delta.
Modelling and simulation of dynamic voltage restorer for power quality improvement h. Now these research going very fast to mitigate the power quality problems with help of power conditioning devices7. Department of electrical and electronics, trinity institute of technology and research bhopal. 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. Power quality in the distribution system can be improved by using dvr, as assures prespecified quality and reliability of supply. Keywordsdynamic voltage restorer dvr, power quality,unit vector, voltage harmonics, voltage sag, voltage swell i. Mitigation of power quality problems using facts devices. The dstatcom is a compensating device which is used to control the flow of reactive power in the distribution systems. It is recently being used as the active solution for mitigation of power quality problems. A voltage controlled d statcom for power quality improvement. To prove the flexibility and effectiveness of the proposed scheme two types of loads have been considered and simulation results are observed. Maximum ac loads consumes reactive power, it causes poor power quality in power system.
The power conditioning devices are dynamic voltage restorer dvr, static compensator statcom, and unified powerquality. When the injected voltage is in quadrature with the current at the fundamental frequency, the compensation is made by injecting reactive power. Introduction power quality is need of todays environments where there is demand of electricity. Of eee, college of engineering perumon, kollam abstract. Pdf power quality improvement using dvr admin asdf. Power quality enhancement using dynamic voltage restorer dvr. Voltage sag, swell is generated at source point and it is seen that using dvr all issues can be resolve 5. Keywords dvr dynamic voltage restorer, power quality, voltage sag, voltage swell.
There is described the standard statcom device added by an energy storage in its dc circuit. Power quality seminar report, ppt, pdf for electrical. Enhancement of power quality by dvr using ann technique under unbalanced and nonlinear loads 1k. Power quality improvement by dvr free download as powerpoint presentation. Enhancement of power quality by an application of dvr. Mitigation of power quality problems using dynamic voltage restorer dvr saurabh sahu m. Request pdf voltage quality improvement using dvr the problem of voltage sags and swells and its severe impact on sensitive loads is well known. Performance analysis of multifunctional dynamic voltage. Voltage quality is the major problem which is very severe for the sensitive electronic equipments. Enhancement of power quality using power electronics. The simulation and experimental results demonstrate. A voltage controlled dstatcom for power quality improvement.
Mahela and shaik, presented the detailed analysis of various power quality improvement techniques. In this paper, by adding a control function to dvr. Index terms power quality, shunt active power filter, instantaneous reactive power theory, hysteresis current control. Power quality improvement using dvr dynamic voltage restorer under various fault conditions anjani kumar prajapati1, k. Performance study of dynamic voltage restorer dvr in order. 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 power quality studies. Volume 1 issue 5 jetir issn23495162 jetir1405022 journal of emerging technologies and innovative research jetir. 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. Restorer dvr is a fast, flexible and is better solution to power quality problems. Nowadays, power semiconductor devices are already at such both voltage and current levels that they can be utilized mv and hv applications. The proposal is then implemented using 5kva dvr experimental setup. Dynamic voltage restores dvrs are now becoming more established in industry to reduce the impact of voltage dips on sensitive loads. Voltage sag can be mitigated by voltage and power injections into the distribution system using dynamic voltage restorer dvr.
A static compensator statcom is a flexible ac transmission system facts controller, which. Power quality has become an increasingly important topic in the performance of many industrial applications. Power quality improvement using dvr a thesis submitted to nit rourkela in the partial. Simulation of dvr for power quality improvement by using. Swapna abstractthe dynamic voltage restorer dvr is used to regulate the voltage at the load terminals from various power quality problems like sag, swell, harmonics, unbalance etc. Power system using shunt active filter with synchronous detection method a thesis that has been submitted in partial fulfillment of the necessities for the degree of bachelor of technology in electrical engineering by preetam kumar nanda 110ee0212 under the guidance of prof. The paper describes an advanced approach to power quality enhancement, mainly to flicker mitigation. Request pdf power quality improvement using dvr voltage sags and swells in the medium and low voltage distribution grid are.
Bapaiah power quality improvement by using dstatcom. Voltage dips are one of the most occurring power quality problems. Model of dynamic voltage restorer dvr the dvr dynamic voltage restorer model is shown in fig. Some of the major problems dealt here is the power sag and swell. Power system using shunt active filter with synchronous detection method a thesis that has been submitted in partial fulfillment of the. Dvr based power quality improvement in distribution system.
Pdf power quality improvement using dynamic voltage restorer in. It has becomeimportant,especially, with the introduction of sophisticated devices, whose performance is verysensitive tothe quality of power supply. Power quality improvement using sts and dvr in wind energy. Power quality improvement using switch mode regulator. Power quality improvement using self supported and battery. The electronic devices are very responsive to disturbances and become less tolerant to power quality problems such.
The dynamic voltage restorer dvr is one of the modern devices used in distribution systems to protect consumers against sudden changes in voltage amplitu power quality improvement using dvr in power system ieee conference publication. Due to the power injection at upf by the pvs, the voltage at the connecting. Pdf power quality improvement using dvr with two fast. Power quality enhancement using dynamic voltage restorer. Power quality improvement using a dvr dynamic voltage restorer risha dastagir1, mariam asif2 1,2asst. Power quality describes the quality of voltage and current. 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.
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