Demand and response (DR) refers to the mechanisms used for the management of electricity consumption in response to supply conditions. The Open ADR is an example of a standard that can be used to help automate demand response in commercial buildings. To provide demand and response, a system requires pre-defined levels that are used to adjust the expected consumption of energy.
You can use Citect SCADA to implement a demand and response solution.
In Scheduler, states can be defined multiple times to support a set of DR modes. This means the state that is scheduled to occur is determined by the DR mode for the equipment. In the example below "line2.lights" has multiple 'On' states to support multiple DR modes. This allows the room to be scheduled for 'On', with the amount of energy consumed adjusted according to the assigned DR mode.
|
Equipment |
Equipment State |
DR Mode |
Entry Action |
Description |
|---|---|---|---|---|
|
Factory.Floor.Line2.Lights |
On |
0 |
Tagl2_lights=1 |
When scheduled light will turn on at 100% energy output |
|
On |
1 |
Tagl2_lights=80 |
Energy saving 20% |
|
|
On |
2 |
Tagl2_lights=60 |
Energy savings is 40% |
|
|
On |
3 |
Tagl2_lights=40 |
Energy savings is 60% |
|
|
On |
4 |
Tagl2_lights=20 |
Energy Savings is 80% |
|
|
Off |
0 |
Tagl2_lights=0 |
|
The default DR mode value is '0'. When the DR mode field is empty, the default value is used. The Scheduler engine selects the state with the nearest lower DR mode value in the case where an exact match to the current specified DR mode is not found.
Set the DR mode on equipment using the EquipSetProperty Cicode function, for example:
EquipSetProperty (Equipment, "DRMODE", "1", cluster)
Published June 2018