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An enhanced voltage sag compensation scheme for DVR
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An enhanced voltage sag compensation scheme for DVR

Category : Power System


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Project Code : ITPS10


Project Abstract

The higher active power requirement associated with voltage phase jump compensation has caused a substantial rise in size and cost of the dc link energy storage system of DVR. The existing control strategies either mitigate the phase jump or improve the utilization of dc link energy by the following: 1) reducing the amplitude of the injected voltage or 2) optimizing the dc bus energy support. In this project, an enhanced sag compensation strategy is proposed, which mitigates the phase jump in the load voltage while improving the overall sag compensation time. An analytical study shows that the proposed method significantly increases the DVR sag support time (more than 50%) compared with the existing phase jump compensation methods. This enhancement can also be seen as a considerable reduction in dc link capacitor size for new installation.

EXISTING SYSTEM

PROPOSED SYSTEM

It cannot improves the voltage quality

the proposed strategy improves the voltage quality of sensitive loads

It cannot achieve high voltage gain

It achieves high voltage gain

.the supporting time is less compared to the proposed system.

increases the DVR sag support time (more than 50%)

 
 
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