1305   RREC: Missing state for AutoRecSt

Created: 03 Sep 2014

Status: Not Applicable

Part: Part 7-4 (2003)


Page: 120

Clause: 6

Paragraph: Table 10

Category: Issue for edition 2 of this part


In addition to tissue 726 there is another problem:
Acc. to table 10 in clause 6 of IEC 61850-7-4 Ed. 2.0 follwing states of AutoRecSt are possible:
Ready 1, Waiting for trip 2, Trip issued by protection 3, Fault disappeared 4, Wait to complete 5, Circuit breaker closed 6, Cycle unsuccessful 7, Unsuccessful 8, Aborted 9, Successful 10

There is a state missing which was compatible (mandatory) in IEC 60870-5-103: "AR blocked" (INF 130)

This state means the condition of enabled AutoRecloser but CB not ready / (not closed). It is determined and should not destroy a state machine. None of the above mentioned states seems to be appropriate to this state.

The principal diagram of autorecloser in Annex G also does not include such a state.


Add the state "Not Ready" (seems to be better than "Blocked" or "Other") to the table 10 in clause 6 and to the principal diagram in Annex G.

Discussion Created Status
02 Feb 15 Not Applicable
In this section we will not discuss tissues. Edition 2 of part 7-4 has been published. Please repeat the tissue if the question still exists in section for part 7-4 (2010). 03 Sep 14 Ballot Period


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