Under any scenario (aggregator-mediated or otherwise), EndDevices shall be able to report the following monitoring information. This information shall be reported for the connection point. The following average readings are required through the Mirror Metering function set:
• Site Real Power
• Site Reactive Power
• DER Real Power
• DER Reactive Power
• Site Voltage (DER voltage can be provided if site is unavailable)
Where applicable, data intervals shall be aligned to regular boundaries (for example, 1/5/30 minute boundaries). By default, EndDevices shall report monitoring information every 5 minutes (aligned to 5-minute boundaries). Devices shall support reporting intervals up to 1 minute.
The required DERStatus objects for our system are listed below:
Table 4: DER Status Objects Required
DERStatus objects | Requirement |
OperationalModeStatus | Required for all implementations |
GenConnectStatus | Required for all implementations |
inverterStatus | Not required |
alarmStatus | Not required |
storConnectStatus and stateofchargestatus | Required for communications software communication clients that can control energy storage |
The communications software client shall support the following control responses from IEEE 2030.5, Table 27. All other responses are excluded.
Table 5: Control Responses
Enumeration Value | Description |
1 | Event Received |
2 | Event Started |
3 | Event Completed |
6 | The event has been cancelled |
7 | The event has been superseded |
When multiple DER are being represented by one LFDI as a Generating Facility Energy Management System (GFEMS) the Software Communications Client shall provide a representative value for the whole site as below:
Table 6: Aggregated Settings and Capabilities
DERSettings | DERCapabilities | Aggregation |
setMaxVA | rtgMaxVA | Total |
setMaxVAr | rtgMaxVAr | Total |
setMaxVArNeg | rtgMaxVArNeg | Total |
setMaxW | rtgMaxW | Total |