New
automatic electric meters improve service
and billing accuracy
Bills are more accurate, service is improved and Minnesota
Power’s electric distribution system is much more efficient
thanks to a new automatic meter reading system now being installed
across the MP service territory.
When the project is completed in mid-2004, about 75,000 residential
and commercial electric meters will be linked to MP service
and billing offices and will no longer require a human to
“read” them. The meters are being replaced or
retrofitted so that they can automatically transmit data to
Minnesota Power.
Two million Turtles
Hunt Technologies, Inc. of Pequot Lakes, MN has developed
and sold more than 2 million of its Turtle transmitters, which
send data from the meters using the very low frequency spectrum
of existing electric distribution lines.
At select substations throughout the MP service territory,
receivers are installed where the signals come in from individual
residences. Then, information from the meters is transmitted
to MP’s Herbert Service Center.
“In addition to the value associated with automatic
meter reading, data is available for verifying outage restoration,
validating system planning efforts, analyzing system reliability
and helping customers with questions about energy use,”
said Pat Mullen, MP’s vice president of distribution
operations and customer service.
Answers to billing questions
Customers will see more accurate information on their monthly
bills. And because data from individual meters will be available
to MP’s customer service representatives, questions
about energy usage can be handled more efficiently and directly.
The Turtle system gets its name from the time it takes –
27 hours – to get a meter reading.
“It’s slow to get the information, but it’s
continuously sending the signal,” said Kurt Brooks of
Minnesota Power, the project’s manager. “Along
with the meter readings, it gives us a ‘blink count,’
of momentary outages.” This information can be used
to isolate and pinpoint problem areas.
More accurate readings
Many of MP’s 133,000 residential customers live in rural
areas and have been taking their own meter readings. In other
locations, MP employees have traditionally gone house-to-house
reading meters. Installation of the Turtle system, now about
40 percent complete, has already improved billing accuracy.
In total, about 15,000 new meters will be installed and another
60,000 will be calibrated and retrofitted with a circuit board
that counts the revolutions of the horizontal wheel inside
the meter.
When the project is complete, every area in the MP service
territory except for the urban areas of Duluth and Cloquet
will be equipped with the automatic meters.
Customers are notified by mail prior to the work being done.
Contractors and MP employees have been switching over to the
new system at the rate of 50 to 250 electric meters per day. |