At any point in time, there can be only one active event. This active event is displayed as a slot under Adr Device as shown in Figure 18
Akuacom DRAS Server would not restrict creating more than one active event for a specific timeslot. But Akuacom team confirms
that -creating more than one active event for the same timeslot is a very rare use case scenario and if that happens, there
is an internal priority maintained in the server that decides the high priority active event out of all configured events.
This is reflected in DR event xml as the topmost node.
Event Info can be of various types depending on the requirements of the DR program. This event info may take on any of the following values:
-
PRICE_ABSOLUTE - Price number, i.e. $0.25
-
PRICE_RELATIVE - Change in price, i.e. -$0.05
-
PRICE_MULTIPLE - Multiple of current price, i.e. 1.5
-
LOAD_LEVEL - Amount of load based on an enumeration, i.e. moderate, high, etc.
-
LOAD_AMOUNT - Fixed amount of load to shed, i.e. 5 MW
-
LOAD_PERCENTAGE - Percentage of load to shed, i.e. 10%
-
GRID_RELIABILITY - Number signifying the reliability of the grid
The event information along with the “Op Mode Value” are modeled as control points under the Active Event.
Figure 18 shows an active event with Event Id "DEMO UNLIMITED_20111003-120326" under the "DEMO UNLIMITED" DR program. Event Start Time and Event End Time - represent the active period of the event. This event provides two types of event information - Price Absolute and Load Amount with the OpMode Value, “high”. The rest of the event information slots have a "null" value, indicating that this particular DR event does not carry any information for those points.
The event info value read from DRAS server is reflected in Adr Proxy Ext's read value as shown in Figure 19 below.
