POWER October 2016 - 45

OPERATIONS & MAINTENANCE
2. In control. With four high-definition cameras mounted in the balance facility, engineers
can receive measurements digitally and also observe real-time operation. Courtesy: Sam Fentress
Photography
This two-track structure makes it logistically
difficult during an outage to ship generators
and rotors from the service shops to the factory
and then back to the power plant in a
timely and cost-effective way. Because of
these challenging logistics, many OEMs simply
do not recommend high-speed balancing
at the end of a maintenance outage.
ing operations quickly and efficiently.
One reason for this gap is that many
OEM service shops are sited regionally. At
the same time, a central factory controls
the OEM's high-speed balance cell, but it
typically operates as a separate organization.
High-Speed Balancing Options
However, improvements are being made in
this area, and practical experience is leading
many power plants to reconsider past
practices. Operators are frequently electing
to perform a high-speed balance on their
generator rotor prior to returning the unit to
service. In some cases, the balancing is done
on-site. While this option works, it is rarely
optimal. On-site balancing can be time-consuming
and costly, especially considering the
gassing and de-gassing that must take place
along with the multiple run-ups of the power
plant that may be required as the balance is
performed.
Technological advances, however, now
enable what is in many cases a cost-effective
alternative. A state-of-the-art balance facility
can include both vacuum capability as
well as the ability to excite generator rotors
Platts World
Electric Power
Plants Database
Need a global inventory of electric power generating
units? Platts World Electric Power Plants Database
contains design specications for more than
200,000 plants of all sizes, technologies, fuels
and operating status owned and/or operated by
regulated utilities, private power companies, and
industrial autoproducers.
Visit www.udidata.com for more information.
October 2016 | POWER
www.powermag.com
45
http://www.udidata.com http://www.powermag.com

POWER October 2016

Table of Contents for the Digital Edition of POWER October 2016

Contents
POWER October 2016 - Cover1
POWER October 2016 - Cover2
POWER October 2016 - Contents
POWER October 2016 - 2
POWER October 2016 - 3
POWER October 2016 - 4
POWER October 2016 - 5
POWER October 2016 - 6
POWER October 2016 - 7
POWER October 2016 - 8
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POWER October 2016 - Cover3
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