scholarly journals ANALISIS KOMPENSASI TEGANGAN SAG DENGAN KONTROL HYSTERESIS DAN ANN PADA GI SENGKALING PENYULANG PUJON

Transmisi ◽  
2020 ◽  
Vol 22 (3) ◽  
pp. 73-79
Author(s):  
Arief Trisno Eko Suryo ◽  
Wijono Wijono ◽  
Bambang Siswojo
Keyword(s):  
Power Device ◽  
Dynamic Voltage Restorer ◽  
Voltage Restorer ◽  
Dynamic Voltage ◽  
Custom Power

Makalah ini mendiskusikan tentang analisis kompensasi tegangan sag. Tegangan sag disebabkan oleh gangguan hubung singkat 3 fasa ke tanah. Gangguan tersebut memiliki dampak besar terhadap kerusakan pada saluran beban Penyulang Pujon. Tegangan sag dapat diatasi dengan kompensasi menggunakan Dynamic Voltage Restorer (DVR), yang mana DVR merupakan salah satu dari custom power device yang paling efektif. Hysteresis dan ANN diusulkan untuk mengatur kompensasi tegangan sag dari DVR. Hasil simulasi menunjukkan bahwa kontrol Hysteresis mampu mengkompensasi tegangan beban rata-rata sebesar 95.9 %, dan ANN 104.3%. Kontrol Hysteresis lebih baik dibandingkan dengan kontrol ANN dalam mengkompensasi tegangan beban, yang mana tidak melebihi tegangan beban normal pada saat kompensasi tegangan sag.

scholarly journals Custom Power Device in Multilevel Inverter for Power Quality Improvement

2019 ◽  
Vol 9 (2S2) ◽  
pp. 967-970
Keyword(s):  
Transmission Lines ◽  
Multilevel Inverter ◽  
Power Device ◽  
Dynamic Voltage Restorer ◽  
Voltage Restorer ◽  
Power Quality Improvement ◽  
Dynamic Voltage ◽  
Voltage Swell ◽  
Electronic Parts ◽  
Custom Power

A dynamic voltage restorer (DVR) is a FACTS gadget, which is utilized fundamentally in transmission lines to remunerate the voltage list and voltage swell that happens on hold. A DVR is a circuit, which made out of intensity electronic parts like diodes and thyristors. It is generally utilized because of its miniature size and proficient activity. This paper proposes a cascaded inverter type DVR to repay voltage hang in the utilities for power appropriation, which is used for country zone advancement. The DVR infuses a voltage arrangement to the framework voltage. The multi carrier PWM strategy is utilized to produce terminating voltage to inverter. The proposed framework decreases the voltage list and complete consonant bending of the conveyance framework. The proposed framework is simulated utilizing the MATLAB/Simulink.

scholarly journals Dynamic Voltage Restorer for Sag and Swell Issues in Power System

2018 ◽  
Vol 11 (3) ◽  
pp. 1243
Author(s):  
Lakshmi Lakshmi Kumari ◽  
Uma Vani Uma Vani
Keyword(s):  
Power Quality ◽  
Distribution Systems ◽  
Power Device ◽  
Voltage Sag ◽  
Voltage Sags ◽  
Dynamic Voltage Restorer ◽  
Voltage Restorer ◽  
Wide Range ◽  
Dynamic Voltage ◽  
Custom Power

<p>This paper presents the application of dynamic voltage restorers (DVR) on power distribution Systems for mitigation of voltage sags/swells at critical loads. DVR is one of the compensating types of custom power devices. The power quality is affected mainly due to the sensitive loads which results in voltage sag and voltage swells. It is necessary to investigate the suitable methods for mitigation of voltage sags. Sensitivity is the main cause of the above power quality problems and it cannot be eliminated completely as it has many other operating properties. So the next possible solution is to correct the problems caused by the sensitive equipments connected to the faulty loads. The occurrence of sag and swell varies with equipment, environment, process operations, desired control schemes etc. From the wide range of mitigation methods, the selected one has to be observed for the effect on the characteristics. These problems can be mitigated with voltage injection method using custom power device, Dynamic Voltage Restorer (DVR). In this paper we design a Dynamic Voltage Restorer (DVR) which is utilized for power quality improvement. The main power quality problems like voltage sag and swell are studied in this paper. The device used to phase out voltage sags and a swell in the distribution lines is the Dynamic Voltage Restorer (DVR). The Dynamic Voltage Restorer is a special type of power device used for providing consistent and reliable supply power to the load devices. Dynamic Voltage Restorer uses a vector control strategy for mitigating power quality problems by automatically detecting and injecting the voltage components through an injection transformer. Here comes the importance of soft computing techniques like PI controller. The system will be able to correct repeated occurrences of the power quality problems. </p>

scholarly journals In Phase Compensation of Sag and Swell Voltage by using Dynamic Voltage Restorer

2019 ◽  
pp. 77-83
Author(s):  
Diksha Wasnik ◽  
Radharaman Shaha
Keyword(s):  
Power Quality ◽  
Storage System ◽  
Electrical Equipment ◽  
Control Technique ◽  
Power Devices ◽  
Phase Compensation ◽  
Dynamic Voltage Restorer ◽  
Voltage Restorer ◽  
Dynamic Voltage ◽  
Custom Power

Today most of the industries and customers are using sensitive and sophisticated electrical equipment based on semiconductor devices, these may causes power quality disturbance. The major problems are voltage sag and swell. The sag and swell not only occur by disturbed power quality but also due to high system tapping at point of common coupling. To overcome this problem and to improve power quality the distribution companies uses various custom power devices. Among the various custom power devices Dynamic voltage restorer is used for compensation in this paper, which is most popular and widely used method. Here, In phase compensation technique of DVR is used with battery energy storage system. The voltage at PCC have been observed. The control technique employed here is SRF theory with PI controller. The overall work is carried out in MATLAB Simulink.

The Review of Dynamic Voltage Restorer in Power System

2013 ◽  
Vol 339 ◽  
pp. 558-560
Author(s):  
Xue Song Zhou ◽  
Hao Wu ◽  
You Jie Ma
Keyword(s):  
Electric Power ◽  
Basic Structure ◽  
Development Trend ◽  
Power Device ◽  
Voltage Sag ◽  
Dynamic Voltage Restorer ◽  
Existing Problems ◽  
Voltage Restorer ◽  
Dynamic Voltage ◽  
The Development Trend

Dynamic Voltage Restorer, as an important electric power device, used to deal with the voltage sag. In the front of the article, the voltage sag is introduced firstly, and then shows the basic structure and principle of Dynamic Voltage Restorer, research status, existing problems. Finally I will try to give the development trend of Dynamic Voltage Restorer.

scholarly journals Fuzzy Neural Technique Based Dynamic Voltage Restorer for Power Quality Enhancement Under Different Voltage Variations

2020 ◽  
Vol 7 (3) ◽  
pp. 29-40
Author(s):  
Abdul-Jabbar Fathel Ali ◽  
Wael Hussein Zayer ◽  
Samhar Saeed Shukir
Keyword(s):  
Power Quality ◽  
Renewable Energy Sources ◽  
Neural Controller ◽  
Dynamic Voltage Restorer ◽  
Voltage Distortion ◽  
Voltage Restorer ◽  
Power Disturbances ◽  
Fuzzy Neural ◽  
Dynamic Voltage ◽  
Custom Power

Abstract— Recently a large interest has been focused on power quality field due to: disturbances caused by non-linear loads, Increase in the number of electronic devices and renewable energy sources. Power quality measures the fitness of the electric power transmitted from generation to the industrial, domestic and commercial consumers. In a power system voltage distortion introduced by harmonics and voltage sags are the most severe affecting power quality, because of both consumers and utilities are affected by these disturbances. Different methods to enhance the power quality but the custom power device is the most effective and efficient method. One of which is the use of Dynamic Voltage Restorer (DVR). The performance of the DVR based on Fuzzy Neural controller to restore the load voltage to its nominal value under different fault conditions and power disturbances is presented in this paper. Simulation results are carried out using MATLAB/SIMULINK program. The faults and disturbances are initiated at 0.8s and kept till 0.95s.

scholarly journals Two-Feeder Dynamic Voltage Restorer for Application in Custom Power Parks

Energies ◽  
2019 ◽  
Vol 12 (17) ◽  
pp. 3248 ◽  
Author(s):  
Sergio Constantino Yáñez-Campos ◽  
Gustavo Cerda-Villafaña ◽  
Jose Merced Lozano-Garcia
Keyword(s):  
Pulse Width Modulation ◽  
Power Devices ◽  
Dynamic Voltage Restorer ◽  
Voltage Restorer ◽  
Different Types ◽  
The Matrix ◽  
Dynamic Voltage ◽  
Vector Modulation ◽  
Custom Power ◽  
Stable Voltage

The custom power park (CPP) is a concept that has been developed for the purpose of dealing with power quality problems. The CPP is powered by two independent feeders and consists of different types of custom power devices for compensation (dynamic voltage restorer, DVR) and reconfiguration (static transfer switch, STS). Normally, the loads are fed by the preferred feeder (PF) through the STS. When a fault occurs in the PF, the STS performs a reconfiguration of the feeders and feeds the load with an alternate feeder. In this paper, a two-input DVR based on the matrix converter is proposed to provide stable voltage to the load. Each of the DVR inputs is connected to a different feeder, and the PF powers the load. Thus, the DVR has an operational behavior like the STS when reconfiguring the energy transfer of the two feeders and injects it into the PF to guarantee a stable voltage in the load. The control algorithm in the DVR is performed in the dq reference frame to have a unit power factor in feeders and load. The modulation schemes are based on space vector modulation and modified carrier based pulse width modulation. The efficiency and multifunctionality of the proposed DVR is corroborated by simulations on the MATLAB/Simulink.

scholarly journals Development of Multilevel Cascaded H-bridge Inverter Based Dynamic Voltage Restorer (DVR)

2019 ◽  
Vol 8 (12) ◽  
pp. 146-149
Keyword(s):  
Control Method ◽  
Estimation Method ◽  
Dynamic Voltage Restorer ◽  
Voltage Restorer ◽  
Three Phase ◽  
Control Scheme ◽  
Energy Compensation ◽  
Dynamic Voltage ◽  
And Control ◽  
Custom Power

The objective of this study is to present the development of a dynamic voltage restorer (DVR) which employs a cascaded H-bridge multilevel inverter. DVR is a power electronic converter based on custom power device used to compensate for voltage variations. DVR does not need active energy storage systems like batteries as the zero energy compensation method is used. The control system may lead to challenges as compared with other DVR systems. To overcome this challenge a control method is used. In addition to minimize the delay of DVR and to mitigate the voltage sags, a three phase estimation method is used. The estimation method and control scheme is performed by using MATLAB/SIMULINK.

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