What is
Shore-Line Power?
> Shore-Port-to-Ship Power
Converters
Shore-line power
refers to
shutting down
auxiliary
engines on ships
while in port
and plugging
into electrical
power supplied
at the port.
This is also
referred to as
shore power or
cold-ironing, and
sometimes,
alternative
maritime power.
This concept has
become more
popular because
the problems
related to ship
auxiliary
engines are
significant
contributors to
toxic air
contaminants.
Diesel PM
emissions are
estimated to be
responsible for
about 70 percent
of the total
ambient air
toxic risk in
California.
With shore-power,
the ships can
turn off their
engines, which is
where the
expression
cold-ironing
comes from
because the
vessel goes
cold. By
cold-ironing,
the ship
virtually
eliminates all
emissions from
the ship while
it is in port.
Ships can be in
port or
“hotelling “ for
several hours to
several days.
Shore-power
works by using a heavy
extension cord
cable,
which extends
from the pier
and plugs into
the ship’s
receptacle
allowing the
ship to have
power for
operation of its
machinery.
This
allows the
ship to shut
down the diesel
engines that
run the ship’s
generators.
There is a
problem
delivering
electricity to
cargo ships
because the
shore cable
passes from the
dock to the ship
either by the
side or by the
stern. In both
of these
situations, the
cable passes
through the
cargo or
container
handling areas
and is
interfering with
operation such
as loading and
unloading of
cargo. Also,
there are people
in these areas,
which brings up
the concern of
adequate space
and safety
issues.
All
ships need to
be retrofitted
in order to
be plugged into
port. It
is sometimes
difficult to
retrofit ships
due to limited
space and
expense.
The difference in
voltage and
frequency from
one port to
another can be
an additional
problem. This
problem can be
handled
economically with
a shore-port-to-ship
power
converter .
These converters
are used to
convert
frequencies,
voltages and
phases. The most
common
frequencies are
50Hz, 60Hz, or
400Hz. Common
voltages are
208, 240, 400
and 460 volts. TEMCo
Shore-Port-to-Ship
Power Converters
also offer line
isolation,
harmonic
cancellation and
power factor
correction.
Regulating ship
emissions while
docked is
critical and
timely.
Regulations for
shore power
should be
incorporated and
implemented
immediately. The
current draft on
the Shore-Side
Power Rule for
Ocean Going
Vessels
Regulations
provides
different
timelines for
shore-side power
implementation.
The following
reflects the
percentage of
ship visits that
must use
shore-side
power:
-
30 percent by 2010
-
60 percent by 2012
-
80 percent by 2014
-
100 percent by 2016
The following
is a list of
health benefits if this
program is
implement:
-
280
premature
deaths
avoided
-
170 hospital
admissions
avoided
-
8,200
respiratory
impacts
avoided
-
680
bronchitis
impacts
avoided
-
49,000 work
loss days
avoided; and
280,000
minor
restricted
activity
days avoided
As this method
becomes global,
there will be
an
increase in the
use of
shore-port-to-ship
power converters.
Because each
port will have
different
frequencies and
voltages, a
converter become
an economical
solution. A TEMCo
Shore-Port-to-Ship
Power Converter
is a unique
frequency
converter that
performs
multiple
functions. It
provides the
possibility to
connect to any
shore power
connection
anywhere in the
world ranging
from 25 kVA to
over 400 kVA.
Supplying power
is only half of
what this
converter does,
it also
stabilizes and
offers power
factor
correction.
About
TEMCo
TEMCo has many years of
experience.
They
manufacture
and develop
industrial power
solutions and
are dedicated
to using the
highest quality
materials.
TEMCo has a staff of
highly trained
engineers that
can design your
equipment to
meet any of your
application
requirements,
and they
provide the
latest and best
technology the
industry has to
offer.
TEMCo has
had
extensive
experience
manufacturing
electrical power
products since
1968.
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