Voltage Sag Mitigation by using Photovoltaic based Dynamic Voltage Restorer in Barak Valley Power System

2020 ◽  
Author(s):  
Jagannath Patra ◽  
Nitai Pal ◽  
Ashiwani Yadav ◽  
Aprajita Kumari
Keyword(s):  
Power System ◽  
Voltage Sag ◽  
Dynamic Voltage Restorer ◽  
Barak Valley ◽  
Voltage Restorer ◽  
Dynamic Voltage

scholarly journals PMU and DVR based Power System Monitoring, Controlling and Voltage sag Compensation

2020 ◽  
Vol 32 ◽  
pp. 01006
Author(s):  
Abhishek Chalwadi ◽  
Kiruthika M ◽  
Bindu S
Keyword(s):  
Power System ◽  
Power Quality ◽  
Measurement Unit ◽  
Voltage Sag ◽  
Dynamic Voltage Restorer ◽  
Power System Monitoring ◽  
Voltage Restorer ◽  
Dynamic Voltage ◽  
The Difference ◽  
Compensation Device

The power system network is becoming dense and much more complex. Dynamic and continuous monitoring of the power system network is required to avoid power outages. Phasor Measurement Unit (PMU) is one such device that provides state estimation parameters of dynamic power system networks that are used for designing relays and controlling the system network. Power Quality problems such as voltage sags and swells can damage the sensitive load and cause abnormal voltage, current, and frequency conditions in a power system network. Fast and major developments in power electronics technology have made it possible to mitigate the power quality problems. Dynamic Voltage Restorer (DVR) is a voltage sag compensation device that compensates the difference in voltage avoiding interruptions and restores the voltage to the pre-fault value. This paper discusses a technique used for monitoring, protecting, and controlling the system under fault condition using PMU and compensate voltage sag for a sensitive load using DVR based on the data collected by placing PMU in an optimal location. The outcome of the above analysis is recorded which shows that effective monitoring, controlling, and voltage sag compensation can be done with less number of PMU’s placed optimally in conjunction with DVR.

scholarly journals Improved Analysis of DVR Performance for Voltage Sag Mitigation

2018 ◽  
Vol 17 (3) ◽  
pp. 36-40
Author(s):  
Hannah Naqiah Abdul Razak ◽  
Dalila Mat Said ◽  
Nasarudin Ahmad
Keyword(s):  
Power System ◽  
Power Distribution ◽  
Load Condition ◽  
Voltage Sag ◽  
Voltage Sags ◽  
Dynamic Voltage Restorer ◽  
Power Distribution System ◽  
Voltage Restorer ◽  
Three Phase ◽  
Dynamic Voltage

Dynamic Voltage Restorer (DVR) provides the most reliable solution to the voltage quality problem in power distribution system from the effectiveness of DVR performance for voltage sag mitigation. As a custom power device, DVR offers the best solution to three phase power system in order to improve the power quality issue as the magnitude and phase of the voltage is added during the sags occurrence to restore the load condition to compensate the voltage sags. The suitable controller, Proportional-Integral (PI) Controller is used along with the Pulse Width Modulation (PWM)-based control scheme to calculate the exact error and generate the missing voltage to be injected to the three-phase power system through injection transformers. Simulation results of various fault types using MATLAB/SIMULINK are shown in this paper to demonstrate the successful compensation of voltage sags by mitigation technique using Dynamic Voltage Restorer in three-phase power distribution. 

scholarly journals DVR with Modified Y Source Inverter and MCFC

2019 ◽  
Vol 9 (1) ◽  
pp. 3803-3806 ◽  
Author(s):  
J. Chakravorty ◽  
G. Sharma
Keyword(s):  
Power System ◽  
Power Quality ◽  
Molten Carbonate Fuel Cell ◽  
Voltage Sag ◽  
Molten Carbonate ◽  
Dynamic Voltage Restorer ◽  
Proposed Model ◽  
Voltage Restorer ◽  
Dynamic Voltage ◽  
Voltage Swell

Power quality is a big challenge nowadays. Various disturbances present in the power system are voltage sag, voltage swell, harmonics, transients, interruptions, voltage collapse etc. To solve the problem of power quality, various custom power devices are generally used in a power system, dynamic voltage restorer (DVR) being one of them. DVR is used for the compensation of voltage sag and swell. In this paper, a model of DVR with molten carbonate fuel cell (MCFC) and Y source inverter is proposed. The proposed model is compared with the existing ones to check its performance characteristics. MATLAB/SIMULINK was been used to check and compare the performance of the proposed with existing models.

Aplikasi Dynamic Voltage Restorer Series Pada Analisis Voltage Sags

2012 ◽  
Vol 9 (2) ◽  
Author(s):  
Marthen Liga
Keyword(s):  
Power System ◽  
Electric Power ◽  
Power Quality ◽  
Electric Power System ◽  
Voltage Sag ◽  
Dynamic Voltage Restorer ◽  
Voltage Restorer ◽  
Dynamic Voltage ◽  
Quality Of Electric Power

An electric power system must have a high level of reliability that the system is able to provide the required supply of electrical energy continuously and with good power quality, in terms of voltage regulation and frequency regulation. Decline in the quality of electric power will make serious disruption to the operational process industry customers.Dynamic voltage restorer (DVR) is a method of power quality solutions that are used to recover the voltage drop (sag) through the injection voltage on the network. Minimum power injection method is the minimum active power supplied to the load as a result of the voltage sag compensation so as to restore the load voltage back to normal. Control of dynamic voltage restorer produces a rapid and appropriate response to be the right solution to improve the quality of electric power system. Dynamic voltage restorer series is used to improve the quality of the voltage due to voltage sag that can interfere with the performance of critical equipment or sensitive equipment. Performance Series DVR is shown as an interruption of the voltage sag caused by a short circuit or some disturbance of the phase and three phase power system. Process simulation using MATLAB-SIMULINK software to the electric power system toolbox.

scholarly journals A NEW-FANGLED CONTROLLING STRUCTURE FOR MITIGATING VOLTAGE SAG USING THE DVR

2021 ◽  
Vol 9 (2) ◽  
pp. 258-266
Author(s):  
B. Durai Babu, Et. al.
Keyword(s):  
Power System ◽  
Distribution System ◽  
Electrical Power ◽  
Voltage Sag ◽  
Load Current ◽  
Dynamic Voltage Restorer ◽  
Harmonic Content ◽  
Voltage Restorer ◽  
Dynamic Voltage ◽  
Source Voltage

Voltage mitigation in electrical power circulation systems is unique of the crucial errands in recent days, which affects the overall presentation of the distribution system. The voltage sag must be detected and mitigated by implementing a Dynamic Voltage Restorer (DVR). The current works aimed to develop some controlling structures for reducing the voltage sag in the power system. Still, it remains with increased transients, incapability to compensate the mark  voltage, and increased voltage limits. Thus, this paper intends to develop a new controlling algorithm, namely, Synchronous Reference Theory (SRF), for voltage sag mitigation. This Controller's primary considerations are to moderate the voltage sag, analyze the imbalance cutting-edge source voltage, and reduce the harmonic content. Here, the 3-phase load current obtained from the non-mark ar load is given as the input, which is transformed into dq0 reference. The DC quantities are extracted and presented as the input for the extraordinary pass purifyingmethod, eliminating the vocal contents. Then, the SRF controller produces the switching pulses for the Z-source inverter, which reduces the voltage sag. Finally, the presentation of the Controller is evaluated by analyzing the power ingesting and effectiveness.

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