1862   Add data object to indicate frequency is in may ride-through or may trip zone.

Created: 14 Mar 2023

Status: Drafting Implementation

Part: Part 7-420 (2021; Edition 2, DER)

Links:

Page: 365

Clause: A.3.2.7.3

Paragraph: A.92 and A.93

Issue

Frequency disturbance monitoring LNs DHFT and DLFT do not have any data object indicating that the DER is in the “may ride-through or may trip” zone.

Proposal

Add a new data object to DHFT and DLFT
MayRtSt: Status indicating that the frequency is in the “may ride-through or may trip zone”.

See
https://www.nist.gov/publications/iec-61850-profile-distributed-energy-resources-supporting-ieee-1547
Appendix G Modeling of Operational Functions from IEEE 1547
G.2. Modeling of Frequency Disturbances

Discussion Created Status
There is already the PrmZnSt status in abstract class RideThroughLN, inherited by DHFT, DLFT

Description
Permissive state: True = the voltage or frequency of the Referenced ECP is in the "may or may not" trip zone; False = the voltage or frequency is not in a "may or may not" trip zone.
29 Jan 26 Drafting Implementation
To do 26 Feb 25 Drafting Implementation
Discussed in WG17 meeting Nov 2023 26 Feb 25 Discussion (red)
WG17 February minutes: the new data objects would be used in testing but probably not in operation.
Proposed solution is to add optional data object 		07 Nov 23 Accepted
Add data object to abstract class RideThroughLN.
page 349
Table A.84

This will be inherited for both frequency and voltage ride-through operational functions. 		14 Mar 23 Triage

 

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