1182   L/H Frequency Ride-Through

Created: 28 Oct 2013

Status: Future Improvement

Part: Part 7-420 (2008; DER)

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Page:

Clause:

Paragraph:

Category: Issue for edition 2 of this part

Issue

High/Low Frequency Ride-Through needs to be added, equivalent to High/Low Voltage Ride-Through in 90-7.

Also additional ramping capabilities should be added.

Modes should have a way of being permitted or not, not just activated or not

Proposal

See attachment

Discussion Created Status
Closed 29 Nov 22 Future Improvement
Closed 29 Nov 22 Approval (Future Improvement)
Closed 29 Nov 22 Discussion (red)
Issue addressed in IEC 61850-7-420 Ed 2 31 Aug 22 Approval (Future Improvement)
Decision at WG17 meeting Frankfurt a. Main (2015-06-25):
Several DOs proposed by Frances Cleveland shall be added to the WG17 UML model.

The following data objects have been added to the WG17 UML model:
- DOPM.OpModHzRt (Description: "Mode of operation – frequency ride-through enable/disable")
- DOPM.OpModVRt (Description: "Mode of operation – voltage ride-through enable/disable")
- RDGS.HiVRtSt (Description: "When equals to TRUE, high voltage ride-through incident is occurring")
- Existing DO RDGS.LoVRidthSt renamed to RDGS.LoVRtSt (Description: "When equals to TRUE, low voltage ride-through incident is occurring")
- DRCT.NomRmpUpRte (Description: "Nominal ramp up rate if separate up and down ramp rates are required. Ramp rate as percentage of current rather than power.")
- DRCT.NomRmpDnRte (Description: "Nominal ramp down rate if separate up and down ramp rates are required. Ramp rate as percentage of current rather than power.")
- DRCT.EmgRmpUpRte (Description: "Emergency ramp up rate. Ramp rate as percentage of current rather than power.")
- DRCT.ConnRmpDnRte (Description: "Disconnection ramp down rate (non-emergency). Ramp rate as percentage of current rather than power.")
- DRCT.ConnRmpUpRte (Description: "Soft-start reconnection ramp up rate. Ramp rate as percentage of current rather than power.")
- Enumeration CurveModeKind (used by DGSM.ModTyp) extended by items 9 .. 12 for low / high voltage or frequency ride-through

Will be included in coming CD 1 of IEC 61850-7-420 Ed. 2. 		10 Jul 15 Ballot Period

 

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