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3. Totalization
Summary Meters
In the metering database, only one meter can be attached directly to a delivery point.
Therefore, a virtual meter, called the summary meter is created to accommodate the
realities of the table. (The summary meter is referred to as a summary map in the
metering database.)
The summary meter is a mathematical tool used to sum readings for the physical and/or
other summary meters supplying the delivery point, and to apply losses, error
correction factors and allocation of station service. The summary meter is not a physical
meter, but a marker in the database that accumulates total meter readings for the
purposes of settlement.
In some instances, summary meters are also used to split physical meters/recorders into
more than one summary meter so that losses can be applied.
In other words, the summary meter and totalization calculations can add and/or subtract
meter readings for one or more meters.
Once the metering data has been totalized, the summary meter is attached to a delivery
point. The delivery point has the same meter readings as the last summary meter. When
viewing metering data via MV-WEB (see Section 4 The Metering Database), all losses are
applied at the delivery point, but when viewing metering data at the physical meter or
the summary meter level, users can request metering data with or without losses.
Totalization of a Delivery Point
Delivery Point
(MPs Account)
Revised: July 2012
Revenue Metering
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