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Fortum Distribution of Karlstad, Sweden, has placed
orders for six Vamp 259 line managers for installation at several
subtransmission substations. The first delivery was a pilot installation
commissioned in the spring of 2008 at the 40 kV Hova substation in the
Västra Götaland region. Two Vamp 96 measuring and monitoring units for
metering of the substation’s 12 kV incoming transformer feeders became
operational at the same time.
The choice of supplier was based on the positive experience of the 11
Vamp 255 feeder managers supplied earlier for the 12kV outgoing feeders
at the same substation. The Vamp 259 unit replaced an old distance
relay. The protection relays and measuring units at the Hova substation
communicate through a fiber optic SPA-loop, which is connected to a
dial-up modem that is configured to the dispatch center.
According to Mr. Lars Öhman, project manager at Fortum
Distribution, the protection functionality of the Vamp 259 units has met
expectations. "Disturbance and event recordings are conveniently
transferred and stored with Vampset, thus providing for easy fault
analysis. Also, it’s easy to collect power quality parameters and
metering registrations when you need them", he explains.
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