About the DRAS Event

When the device polls for a DR event for the first time, a Program object is created with a child component named “Event”. Event is modeled as a Niagara Enum point and it has a proxy extension attached to it. The following figure shows the top level Event properties.

The following properties are displayed under the Event node:

• Facets

  The standard facet property. The default values are set to match the Out (Operational Mode) values of: normal, high, moderate, and special.

• Proxy Ext

  The Dras Proxy Ext properties are described in the following section.

• Out

  This is the “Operation Mode” value. Operation Mode values can be one of the following, as defined by the program for the current time (using the Current Time property value): NORMAL, HIGH, MODERATE, SPECIAL.

Following, is a list of the Dras Event Proxy Ext properties:

• Event Mod Number

  Modification number of the DR event. Used to indicate if the DR Event has been modified by the Utility. Each time it is modified this number is incremented. If the Event Status field is NONE indicating that there is no pending or active DR event then this field is not applicable.

  Note:

  This field is not supported by Akuacom DRAS Server.

• Event Identifier

  Identifier for the DR event that was created when the DR event was first issued. If the Event Status field is NONE indicating that there is no pending or active DR event then this field is not applicable.

• DRAS Client ID

  Identifier of the DRAS client that this Event State is being sent to.

• Event State ID

  This is a transaction ID that is guaranteed to be unique for each instance of the Event State that is generated and sent to the DRAS Client. It is used by the DRAS Client to confirm reception of the Event State from the DRAS.

  Note:

  This field is not supported by the Akuacom DRAS Server

• Schema version

  This is the version number for the Event State schema itself.

• DRAS name

  Name and/or version of the DRAS that is sending the Event State message.

• Test Event

  This attribute signifies whether this is a test event or not. Test events may be issued by the Utility/ISO like other DR Events.

• Offline

  This field signifies whether from the DRAS point of view the DRAS Client is off line. If this field is TRUE then the DRAS Client is off line and if it is FALSE then the DRAS Client is on line.

• Event Status

  This is the DR event status that is valid at the time specified by the Current Time field.

  • None

    No events from the DRAS.

  • FAR

    The DRAS has sent notification of an event but it is not imminent.

  • NEAR

    The event active state is imminent (typically within 1 minute).

  • ACTIVE

    The state when an event has started. This is the time between the event start and event end.

• Current time

  This is the relative time in seconds from the beginning of the DR event window that this particular instance of the Event State is valid for. If the Event Status field is NONE indicating that there is no pending or active DR event then this field is not applicable.

• Start time

  Date and time for when the DR event begins.

• End Time

  Date and time for when the DR event ends.

• Notification Time

  Date and time that the DRAS Client should first be notified of the upcoming DR event.