dynamic voltage restorer (dvr)2
DESCRIPTION
TRANSCRIPT
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MANDAVA INSTITUTE OF ENGINEERING & TECHNOLOGYMANDAVA INSTITUTE OF ENGINEERING & TECHNOLOGYVIDHYA NAGAR,JAGGAIAHPET-521175VIDHYA NAGAR,JAGGAIAHPET-521175
ELECTRICAL & ELECTRONICS ENGINEERING DEPARTMENTELECTRICAL & ELECTRONICS ENGINEERING DEPARTMENT
Modeling And Simulation For Voltage Sags/Swells Mitigation Using
Dynamic Voltage Restorer (DVR)
By
P. Lakshmana Rao (08FF1A0226)
K. Durga Praveen (08FF1A0214)
Nagulmeera (08FF1A0233)
A.V.V.S. Kushal Kumar (08FF1A0261)
Guided by R. Sai Srujan
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Describes the problem of voltage sags and swells and its severe impact on non linear loads or sensitive loads.
The dynamic voltage restorer (DVR) has become popular as a cost effective solution for the protection of sensitive loads from voltage sags and swells.
The control of the compensation voltages in DVR based on dqo algorithm is discussed.
ABSTRACT:
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INTRODUCTION :
A voltage sag is a short duration decrease in voltage values.
short circuits (faults) on the electric power system, motor starting, customer load additions, and large load additions in the utility service area.
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A voltage swell is a short duration increase in voltage values.
By large load changes and power line switching.
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DVR operation
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PSERC
Equivalent circuit of DVR
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Proposed system configuration
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PSERC
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Three-phase voltages sag:
Source voltage
Injected voltage
Load voltage
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PSERC
Three-phase voltages swell:
Source voltage
Injected voltage
Load voltage
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The simulation shows that the DVR performance is satisfactory in mitigating voltage sags/swells.
The DVR handles both balanced and unbalanced situations without any difficulties and injects the appropriate voltage component.
From simulation results also show that the DVR compensates the sags/swells quickly and provides excellent voltage regulation.
The supply voltage to keep the load voltage balanced and constant at the nominal value.
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