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Answers for energy.
Live Line Installationwithin Smart GridMake the most of your
network
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Live Line Installation efficient and safe
The transformation of energy grids
into smart grids is closely related to the
growing communication requirements
(bandwidth demand) in the transmission
and distribution areas.
To allow for quick data transfers between
large substations in the transmission grid,
optical fiber cables are being used to
replace ground wires on high-voltage
lines (OPGW = optical ground wire).
As a result of the growing and often
unpredictable feeding of energy into thegrid by decentralized
generators, it is
becoming increasingly difficult and some-
times impossible for transmission com-
panies to shut off line segments for
installation measures to improve the
communication infrastructure.
The Siemens Live Line Installation process
makes it possible to perform such instal-
lations or repairs on energized power lines.
This installation concept was developed
in a joint effort by Siemens and a team
at Dresden University in Germany.
The Siemens Live Line Installation
process can be used for the following
purposes:
To replace the ground wire with an
optical ground wire, in order to provide
broadband communication even to
smaller substationsAdditional installation of a second
optical ground wire below the top
of the tower, on especially communi-
cation-intensive segments
To replace an obsolete or defective
optical ground wire
Live Line Installation
selected features and functions:
Installation of optical ground wires
(OPGW) under energized condition
Replacement of existing ground
wires with OPGWs
Additional OPGW installation
between the cross-arms
Replacement of existing OPGWs
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Safety of both personnel and equipment
is the utmost priority: Live Line Installation
supplies a new earthing concept as well
as pulling machines and brakes on the
ground.
With Live Line installation, optical ground
wires can be installed either directly at
the top of the tower or below the top
between the power-carrying lines.
Special security precautions are taken
when high-risk areas (highways, bodies
of water, train lines, etc.) are to be
crossed when installing the opticalground wires below the top of
the tower.
During Live Line installation, the existing
ground wire serves as a messenger and
carries all the installation equipment, such
as pulleys, the full dielectric prepulling
rope and the OPGW itself. Thus the new
hybrid cable can be pulled from tower
to tower across the entire delivery length.
In high voltage lines, the usual delivery
length is approximately 4 km.
Siemens is the most experienced and
most successful supplier of live line
installation of optical ground wires
on high-voltage lines worldwide. Weconducted the first live line
installation
already in the year 2000.
Put our experience to work for you!
Live Line Installation
The benefits at a glance
Installation of OPGWs where shut-
down of OHV line is not possible
No overload risk of other OHV lines
during installation, network security
is assured
Secure installation thanks to
proven processes, experienced
teams, and specially designed
tools and accessories
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www.siemens.com/energy
Published by and copyright 2009:
Siemens AG
Energy Sector
Freyeslebenstrasse 1
91058 Erlangen, Germany
Siemens AG
Energy Sector
Power Distribution DivisionEnergy Automation
Humboldtstrasse 59
90459 Nuremberg, Germany
For more information, please contact
our Customer Support Center.
Phone: +49 180/524 70 00
Fax: +49 180/524 24 71
(Charges depending on provider)
E-mail: [email protected]
Power Distribution Division
Order No. E50001-G720-A148-V2-4A00
Printed in Germany
Dispo 06200TH 345-081247 480224 PA 03092.0
Printed on elementary chlorine-free bleached paper.
All rights reserved.
Trademarks mentioned in this document
are the property of Siemens AG, its affiliates,
or their respective owners.
Subject to change without prior notice.
The information in this document contains general
descriptions of the technical options available, which
may not apply in all cases. The required technical
options should therefore be specified in the contract.
