By Topic

Zero-Energy Sag Correctors—Optimizing Dynamic Voltage Restorers for Industrial Applications

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Anish Prasai ; Georgia Inst. of Technol., Atlanta, GA ; Deepak M. Divan

Plants and processes with a high level of industrial automation are most severely affected by short-duration power disturbances. Such plants are frequently fed from highly reliable utility grids, with measured reliability levels that are consistently in excess of 3-5 nines, yet face hours of unscheduled downtime resulting from short-duration voltage sags. Extensive data confirm that such plants experience, on average, 30 power disturbances annually, of which over 95% are short-duration disturbances lasting for no more than six cycles on average. Data also confirm that over 90% of these disturbances are asymmetrical faults. This paper shows a new approach to protecting industrial plants from power disturbances by building on the fact that it is prohibitively expensive to protect against all possible power disturbances and that the cost-effective protection is based on a statistical assessment of disturbances recorded and equipment susceptibility. This paper also shows that it is possible to use a new family of zero-energy sag correctors to realize protection against over 96 of all power disturbances. The design guidelines for such sag correctors, along with simulation and experimental results for the new dynamic voltage restorer system, are provided.

Published in:

IEEE Transactions on Industry Applications  (Volume:44 ,  Issue: 6 )