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| Time
of Use and Meter Reading |
＃
Daily Automatic Reading of All Meters' Window Value
The DC will broadcast a command to
capture and hold the meter values to all RU / DCT at 00:00hr
everyday. It will subsequently read and store the meter values
captured at 00:00hr from each of the RU / DCT. It will then wait for
the host station to issue read command.
＃ Adjustable Reading Frequency (i.e. Reading
Interval Can Be Adjusted)
The time interval between two times of
reading can be set initially on the DC by the host station. The DC
will then execute the reading strictly according to this interval.
In order to reduce unnecessary power consumption, the time interval
between two times of reading is usually set to be 1 hour or above.
＃ Half-an-hour Data Of Appointed Meters
For the demand of load side data, one
or more meters can be appointed by the host station to read and
report their meter values to the DC every half an hour. The data
will all be store in the DC.
＃ Real Time Meter Reading From Appointed
Units
Some or all the metering units can be
appointed to read and report their values to the host station
through the DC at real time. This function is useful to analyze the
suspicious users and check data at site.
＃ Store Every Month End Data Of Given Years
The DC can store the monthly end value
of all meters for access by host station anytime. It is able to
store up to 10 years' monthly end data.
＃ Support 4 Rates Tariff
The RU / DCT is able to record and
store data values based on the four rates tariff: peak, shoulder,
normal and low. The DC is able to define, synchronize and adjust the
time-of-use of different rates tariff.
＃ Support 12 Time-of-use
Each time-of-use for a given rate
tariff can be set up to 3 times during a 24-hour period. In other
words, the time-of-use for each rate tariff does not have to be
continuous.
＃ Remote Setup And Adjustment Of Time-Of-Use
The setup and adjustment are finished
at the host station, sent to DC and subsequently downloaded to RU /
DCT. The rate tariff table is stored at the host stations, DC and RU
/ DCT.
＃ Self-synchronizing Of System Clock
Synchronization of system clock is based on
the host station. Synchronization of system clock is invoked
downward as: host station DC RU / DCT. Any data exchange in the
system will include time information. For instance, the maximum time
interval of two times of communication between DC and RU /DCT is 30
minutes. Hence, system clock is warranted to be reliable and
coincident. If needed, GPS system can be installed at the host
station to insure the system clock reliable.
＃ Automatic computation of consumption
Between Two Times of Consecutive Readings
The host station has the ability to
automatically calculate the power usage between two times of
consecutive readings. Notice: power consumption data is very
important and serious, since it is used as a basis for charge.
Hence, the users of the system are advised to use it strictly
according to instructions. Computation of monthly power consumption
can be processed only once per month. Repeated computation will
destroy the historical data stored in the system. Once corrupted the
data cannot be recovered automatically. Only manual data recovery is
possible. For safety, the system will disallow computation of power
consumption to be done twice and above within a month.
＃ Automatic Logging Of Maximum Loading And
Its Occurrence Time in Each Time-of-use
The RU / DCT have the ability to log the
maximum load and the time of occurrence within each time interval.
This data will subsequently be stored in the DC. Currently, the
system is able to store up to 1 year's data (expandable). |
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Time
of Use and Meter Reading