Live Working Technologies
for Bird Protection
at Medium Voltage OHL
René Dolata
Thomas Haack
Thomas Jordan
11th ICOLIM 2014, Budapest
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ICOLIM 2014 Budapest, Bird Protection Technologies
Motivation and Legal Framework
Increasing number of big birds return to civilized regions like
Germany
e.g. cranes, storks, owls, eagles…
High number of birds die by electric shock, after touching live
and earthed parts at poles of medium voltage OHL (10 … 30 kV)
Medium voltage OHL are
particularly unsafe cause of
small distances between live
and earthed parts.
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ICOLIM 2014 Budapest, Bird Protection Technologies
Motivation and Legal Framework
German legislator published a law to protect big birds of
electrocution by landing on poles of medium voltage OHL
Actual version gives advice that all medium voltage OHL poles
nationwide have to be retrofitted with bird protection devices
to ensure security of birds against electric shock
Bird protection devices which are suitable for poles are
described in “German application guide for bird protection of
OHL”
Cause of little time for maintain retrofitting of poles there was big
demand of utilities for live working technologies
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ICOLIM 2014 Budapest, Bird Protection Technologies
Guards for Post Insulators
One of the most proven device
Protects birds while sitting on
the insulator and between
insulators
Installation by fast and
effective technology (as fast as
in de-energized state!)
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ICOLIM 2014 Budapest, Bird Protection Technologies
Guards for Post Insulators
Live Working method: Hot stick method (ladder or platform)
1. Put on bird guard with battery powered vacuum stick
2. Secure guard with special BSD screw by battery powered
screwdriver stick
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ICOLIM 2014 Budapest, Bird Protection Technologies
Insulating Covers for
Tension Insulators
New device
Most used additional bird protection device (tension insulator)
Independent of type of used OHL terminals and clamps
For single and double tension insulators
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ICOLIM 2014 Budapest, Bird Protection Technologies
Insulating Covers for
Tension Insulators
Live Working method: Hot
stick method (platform)
1. Put on bird guard with hot
stick and fix it by terminal on
the OHL wire (torque!)
2. Secure guard with special
BSD screw by battery
powered screwdriver stick
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ICOLIM 2014 Budapest, Bird Protection Technologies
Bird Guards for Span Poles
Long proved device
Suitable for the pole traverse and for the wire
While insulating covers provide seat for birds, bird guards
prevent poles of sitting birds
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ICOLIM 2014 Budapest, Bird Protection Technologies
Bird Guards for Span Poles
Live Working method: Hot
stick method (platform or
ladder)
1. Put on bird guard with hot
stick and fix it by terminal on
the OHL wire or the traverse
(torque!)
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ICOLIM 2014 Budapest, Bird Protection Technologies
Requirements for
Bird Protection Devices
Basic requirements :
1. Protection of big birds of electric shock
2. Ensuring of electrical safety and security of supply of whole
retrofitted electrical equipment (poles, insulators, wires…)
3. Fast, simple and efficient installation of devices
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ICOLIM 2014 Budapest, Bird Protection Technologies
Requirements for
Bird Protection Devices
No negative effect on dielectric strength of the electrical equipment
by bird protection device.
Used material for devices has to be flame retardant.
Used material has to be temperature resistant.
Used material has to be UV resistant.
Devices should not damage the OHL wire in case of wind forced
vibrations with and without ice load on the device.
Used material has to be resistant against high wind speed (140 km/h,
3 h).
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ICOLIM 2014 Budapest, Bird Protection Technologies
Type Tests
of Bird Protection Devices
Testing of wind resistance in wind tunnel
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ICOLIM 2014 Budapest, Bird Protection Technologies
Type Tests
of Bird Protection Devices
Testing of wind resistance
in wind tunnel
(Bird guard with ice load)
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ICOLIM 2014 Budapest, Bird Protection Technologies
Type Tests
of Bird Protection Devices
Leakage current measurement under rain conditions
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ICOLIM 2014 Budapest, Bird Protection Technologies
Summary
Installation of bird protection devices at OHL are fast and cost
effective by using special designed devices for Live Working
Approx. 90 % of all bird protection devices can be installed by
Live Working
Bird protection devices look very simple. But for fulfilling all
requirements high number of tests is necessary.
BSD is the market leader in bird protection devices in Germany
and provides a wide range of bird protection devices to ensure
compliance with the legal demands regarding conservation of
environment.
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ICOLIM 2014 Budapest, Bird Protection Technologies
Thank you for your attention!
r.dolata@bsd-dresden.de
t.haack@bsd-dresden.de
t.jordan@bsd-dresden.de
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ICOLIM 2014 Budapest, Bird Protection Technologies