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PowerSoft
The box, different according to the instrument, allows configuring a
setpoint on the instantaneous system active power measured by the
instrument
The alarm can be software only or software and hardware as per the other
alarms.
The setpoint is to be set as a percentage of the actual contractual power
(the percentage is fixed for all the tariffs). The setpoint is therefore
dependent on the actual tariff.
After configuring and confirming the parameters, the system controls the
instantaneous system active power comparing its value with the described
setpoint.
Example: the system active power value acquired at 11.00 from the
instrument named 01_TCP1 is 185kW. The system checks if the Enable
contractual setpoint alarm (SW) box is enabled: in this case the contractual
power of the tariff relevant to hour 11.00 is acquired (for example it is 200
kW). The setpoint is 90% of 200kW that is 180kW. The instantaneous
value is compared with the setpoint: since 185kW is higher than 180kW,
there is an alarm condition. The alarm is highlighted in the synoptic, in the
real-time pages and in the active alarm window that automatically pops up.
Only if the Enable contractual setpoint output (HW) box is enabled, a command
is sent to the relevant instrument in order to switch on its digital output.
When the actual tariff varies, the setpoint changes proportionally. If for
example the new contractual power is 220kW, the new setpoint is 198 kW.
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PowerSoft – Instruction manual
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