https://doi.org/10.6028/NIST.TN.2217
G.3. Modeling of Return to Service After Trip
LN DCTE has two attributes whose usage is unclear regarding the permit service requirement. IEC 61850-7-420 provides the following information:
• RtnSrvAuth: “Authorization setting that permits the DER to return to service. True = authorized; false = not authorized. If true, the DER may or may not initiate the return to service process, depending on other factors. The CeaEngz command sets this setting to false [3].”
• RtnSrvAuto: “If true, the DER is authorized to automatically return to service; if false, the DER must wait until an external RtnSrvAuth is received to allow it to return to service [3].”
Proposal
NOTE on IEC 61850-7-420: It is recommended to remove RtnSrvAuto and use RtnSrvAuth only with a changed semantic, to indicate permit service. If true, and the conditions are met, DER will return to service.
Discussion
Created
Status
to do
26 Feb 25
Drafting Implementation
Discussed in WG17 meeting Nov 2023
26 Feb 25
Discussion (red)
WG17 February minutes: more explanation is required in the document, for example a table showing how the combination of DO states affect the return to service
07 Nov 23
Accepted
Discussed in WG17 February 2023
Documentation to be improved.
RtnSrvAuto is a setting, typically set during installation
RtnSrvAuth is a control, sent from the grid operator at the appropriate time.
RtnSrvAuto RtnSrvAuth
False False Wait for RtnSrvAuth command = true
False True Return to service now allowed
True N/A Return to service always allowed