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American Electric Power 4.3 Distribution Grid Management Document ID: Use case # 3.3 Title: Circuit Reconfiguration Use Case Subject Matter Expert: Author: Reviewed by: Ron Cunningham Brian D. Green Ron Cunningham Copyright © 2011 American Electric Power Company Circuit Reconfiguration Version History Rev. Date Author Change description A 9/22/2011 Brian D. Green Initial Release B 10/21/2011 Ron Cunningham Final team review "Acknowledgment: This material is based upon work supported by the Department of Energy under Award Number DE-OE0000193." Disclaimer: "This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof."
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Circuit Reconfiguration - EPRI

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Page 1: Circuit Reconfiguration - EPRI

American Electric Power 4.3 Distribution Grid Management

Document ID: Use case #

3.3

Title: Circuit Reconfiguration Use Case

Subject Matter Expert: Author: Reviewed by: Ron Cunningham Brian D. Green Ron Cunningham

Copyright © 2011 American Electric Power Company

Circuit Reconfiguration

Version History Rev. Date Author Change description

A 9/22/2011 Brian D. Green Initial Release B 10/21/2011 Ron Cunningham Final team review

"Acknowledgment: This material is based upon work supported by the Department of Energy under Award Number DE-OE0000193."

Disclaimer: "This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information,

apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or

service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily

state or reflect those of the United States Government or any agency thereof."

Page 2: Circuit Reconfiguration - EPRI

American Electric Power 4.3 Distribution Grid Management

Document ID: Use case #

3.3

Title: Circuit Reconfiguration Use Case

Subject Matter Expert: Author: Reviewed by: Ron Cunningham Brian D. Green Ron Cunningham

Page 2 of 12 Copyright © 2011 American Electric Power Company Rev. 2

Summary:

This use case describes how the system will use the circuit reconfiguration controller (CRC) to handle faults and restoration automatically.

Narrative:

In the use case, a fault occurs on the distribution system and the Fault Clearing Device clears the fault. The Fault Clearing Device sends the lock out signal to the Circuit Reconfiguration Controller (CRC). The CRC sends the lock out information to the Distribution SCADA (D-SCADA)/DMS, the Outage Management System (OMS), and Distribution Historian. The CRC sends an abnormal control area configuration status to any applicable Volt-Var Controller. By polling the various devices, the CRC is able to perform a fault isolation calculation to isolate the fault. The CRC then sends a device command to the Isolation Device which acknowledges the command and performs the functions needed to isolate the fault. These events are monitored in the D-SCADA through regular polling of the devices. The CRC eventually calculates the reconfiguration scenario and sends the commands to the Reconfiguration Device which acknowledges the commands. After the Reconfiguration Device functions, it sends an update to the CRC which sends all equipment status updates to D-SCADA which updates the Distribution Historian.

Page 3: Circuit Reconfiguration - EPRI

American Electric Power 4.3 Distribution Grid Management

Document ID: Use case #

3.3

Title: Circuit Reconfiguration Use Case

Subject Matter Expert: Author: Reviewed by: Ron Cunningham Brian D. Green Ron Cunningham

Page 3 of 12 Copyright © 2011 American Electric Power Company Rev. 2

Interface Diagram:

Operations

Field

Fault Clearing Device

OMS

Distribution Historian

11

D-SCADA (DMS)

Substation

Distribution RTU

Isolation Device

Reconfiguration Device

Circuit Breaker

Transmission RTU

Substation

Circuit Breaker

TransmissionRTU

60

61

80

64

64

82

82

70

72

73

Volt-VAR Controller 71

Circuit Reconfiguration

Controller63

Volt-VAR Controller

69

Note(s):

Fault Clearing Device includes: Reclosers, Circuit Breakers, Interrupting Switches

Isolation Device includes: Circuit Breakers, Reclosers, Switches

Reconfiguration Device includes: Reclosers, Switches, Circuit Breakers

CRC Feeder Device includes: Reclosers, Circuit Breakers, Interrupting Switches, Switches

Circuit Reconfiguration Controller: Some vendor implementations have the CRC logic and application bundled with the RTU.

Page 4: Circuit Reconfiguration - EPRI

American Electric Power 4.3 Distribution Grid Management

Document ID: Use case #

3.3

Title: Circuit Reconfiguration Use Case

Subject Matter Expert: Author: Reviewed by: Ron Cunningham Brian D. Green Ron Cunningham

Page 4 of 12 Copyright © 2011 American Electric Power Company Rev. 2

Typical Circuit Layout for this Use Case:

Circuit Breaker 1

Circuit Breaker 2

Fault Clear Device 1

N.C.

Fault Clear Device 2

N.C. 1) opens on fault

Isolate Device 1

N.C.2) opens to Isolate

Reconfig Device 2

N.C.

CRC Device A

N.C.

CRC Device C N.O.

3) closes to Reconfig

CRC Device B

N.C.

Reconfig Device 3

N.C. Fault

Actor(s):

The list of the actors and the roles that are participating in this use case described in the table below.

Name Role description

CRC Circuit Reconfiguration control logic and application

Distribution Historian Distribution Historian

D-SCADA / (DMS) Distribution SCADA is a component of the Distribution Management System (DMS)

Fault Clearing Device Recloser, Circuit Breaker, Interrupting Switch

Isolation Device Circuit Breaker, Recloser, Switch,

OMS Outage Management System

Reconfiguration Device Recloser, Switch, Circuit Breaker

Distribution RTU (D-RTU), provides communication acces to in-scope Distribution Devices and Actors

Transmission RTU (T-RTU), provides communication access to Circuit Breaker

Volt VAR Controller Controller for Volt VAR operation

Page 5: Circuit Reconfiguration - EPRI

American Electric Power 4.3 Distribution Grid Management

Document ID: Use case #

3.3

Title: Circuit Reconfiguration Use Case

Subject Matter Expert: Author: Reviewed by: Ron Cunningham Brian D. Green Ron Cunningham

Page 5 of 12 Copyright © 2011 American Electric Power Company Rev. 2

Participating Business Functions:

The participating business function, its acronym and what they provide in this use case are detailed in the table below.

Acronym Business Function/Abstract Component Services or Information Provided

CRC Circuit Reconfiguration Controller, controls fault isolation and circuit reconfiguration for the substation circuits

Circuit Reconfiguration control logic and application, initiating operational commands for fault isolation and reconfiguration devices

VVC Volt-VAR Controller, controls Volt VAR operations for the field equipment

Controls Volt VAR operations by initiating operational commands for field devices

Assumptions / Design Considerations:

• Standard International Electrotechnical Commission (IEC) 61968 Message Definition format will be followed to provide the Header, Request, Reply, and payload used when defining the messages for the design specifications. For the purpose of the use cases identified in this document these have been omitted as they are to be provided in the design specification for the Circuit Reconfiguration use case.

• It is understood that the Isolation Device includes circuit breakers, reclosers, and/or switches.

• It is understood that the Reconfiguration Device includes reclosers, switches, and/or circuit breakers.

• It is understood that the Fault Clearing Device includes: reclosers, interrupting switches, and/or circuit breakers

• T-RTU will provide the CRC with control to and status of the station circuit breakers.

• The CRC sends control area configuration status to any applicable Volt-Var Controller.

Page 6: Circuit Reconfiguration - EPRI

American Electric Power 4.3 Distribution Grid Management

Document ID: Use case #

3.3

Title: Circuit Reconfiguration Use Case

Subject Matter Expert: Author: Reviewed by: Ron Cunningham Brian D. Green Ron Cunningham

Page 6 of 12 Copyright © 2011 American Electric Power Company Rev. 2

Normal Sequence:

The sequences of events, showing the order in which they ocurr during the typical progression of this use case are provided in the table below. The Sequence Diagram that graphically depicts the events is presented immediately following the table.

Use Case Step

Triggering Event

Description Of Process Information To Be Exchanged

Producer Receiver Message Type

1.A Protective devices clears fault

Fault Clearing Device sends Lock Out Signal to the D-RTU

Lock Out Signal

Fault Clearing Device

D-RTU DNP3

1.B1 Circuit sends Lock Out Signal to the D-RTU via T-RTU

Lock Out Signal

Circuit Breaker

T-RTU DNP3

1.B2 T-RTU sends Lock Out Signal to the D-RTU

Lock Out Signal

T-RTU D-RTU DNP3

2 D-RTU sends Lock Out Signal to the CRC

Lock Out Signal

D-RTU CRC DNP3

3 The D-RTU sends the Lock Out Signal to the D-SCADA

Lock Out Signal

D-RTU D-SCADA

DNP3

4 The D-SCADA sends the Lock Out Signal to the OMS

Lock Out Signal

D-SCADA

OMS Proprietary

5 The D-SCADA sends the Lock Out Signal to the Distribution Historian

Lock Out Signal

D-SCADA

Distribution Historian

Proprietary

6 Lock Out signal received by CRC

CRC sends an abnormal control area configuration state to Volt-VAR Controller via D-RTU

Abnormal Control Area Configuration

CRC D-RTU DNP3

7 D-RTU sends an abnormal control area configuration state to Volt-VAR Controller

Abnormal Control Area Configuration

D-RTU Volt-VAR Controller

DNP3

8 CRC polls applicable Feeder Devices for status from D-RTU

Poll of Feeder Devices

CRC D-RTU DNP3

Page 7: Circuit Reconfiguration - EPRI

American Electric Power 4.3 Distribution Grid Management

Document ID: Use case #

3.3

Title: Circuit Reconfiguration Use Case

Subject Matter Expert: Author: Reviewed by: Ron Cunningham Brian D. Green Ron Cunningham

Page 7 of 12 Copyright © 2011 American Electric Power Company Rev. 2

Use Case Step

Triggering Event

Description Of Process Information To Be Exchanged

Producer Receiver Message Type

9.A D-RTU sends pool request for System Monitoring Data to Isolation Devices

Poll of Feeder Devices

D-RTU Isolation Device

DNP3

9.B1 D-RTU sends pool request for System Monitoring Data to Circuit Breaker via T-RTU

Poll of Feeder Devices

D-RTU T-RTU DNP3

9.B2 T-RTU sends pool request for System Monitoring Data to Circuit Breaker

Poll of Feeder Devices

T-RTU Circuit Breaker

DNP3

10.A Receipt of Poll Request from CRC

Isolation Device sends System Monitoring Data to CRC via D-RTU

System Monitoring Data

Isolation Device

D-RTU DNP3

10.B1

Receipt of Poll Request from CRC

Circuit Breaker sends System Monitoring Data l to the D-RTU via T-RTU

System Monitoring Data

Circuit Breaker

T-RTU DNP3

10.B2

T-RTU sends System Monitoring Data to the D-RTU

System Monitoring Data

T-RTU D-RTU DNP3

11 D-RTU sends specified Feeder Device System Monitoring Data to the CRC

System Monitoring Data

D-RTU CRC DNP3

12 Receipt of Specified Feeder Device System Monitoring Data

CRC performs a Fault Isolation Calculation to isolate the fault using Feeder Device System Monitoring Data

Fault Isolation Calculation

CRC Internal proprietary

13 CRC sends Device Commands to the appropriate Isolation Devices via D-RTU

Device Commands

CRC D-RTU DNP3

14 D-RTU sends Device Commands to the appropriate Isolation Devices

Device Commands

D-RTU Isolation Device

DNP3

Page 8: Circuit Reconfiguration - EPRI

American Electric Power 4.3 Distribution Grid Management

Document ID: Use case #

3.3

Title: Circuit Reconfiguration Use Case

Subject Matter Expert: Author: Reviewed by: Ron Cunningham Brian D. Green Ron Cunningham

Page 8 of 12 Copyright © 2011 American Electric Power Company Rev. 2

Use Case Step

Triggering Event

Description Of Process Information To Be Exchanged

Producer Receiver Message Type

15 Receipt of CRC Isolation command

Isolation Device functions according to the Device Command

Device Commands

Isolation Device

Internal Proprietary

16 Isolation Devices sends Device System Monitoring Data to CRC via D-RTU

System Monitoring Data

Isolation Device

D-RTU DNP3

17 D-RTU sends Feeder Device System Monitoring Data to the CRC

System Monitoring Data

D-RTU CRC DNP3

18 D-RTU sends Status Updates to D-SCADA

Status Updates D-RTU D-SCADA

DNP3

19 D-SCADA sends Equipment Status Updates to the OMS

Equipment Status Updates

D-SCADA

OMS Proprietary

20 D-SCADA sends Equipment Status Updates to the Distribution Historian

Equipment Status Updates

D-SCADA

Distribution Historian

Proprietary

21 Receipt of Feeder Device System Monitoring Data after Fault Isolation Operation

CRC calculates Optimal Circuit(s) Reconfiguration Scenario

Optimal Circuit(s) Reconfiguration Scenario

CRC Internal Proprietary

22 CRC send Device Commands to Reconfiguration Devices via D-RTU

Device Commands

CRC D-RTU DNP3

23 D-RTU sends Device Commands to the appropriate Reconfiguration Devices

Device Commands

D-RTU Reconfiguration Device

DNP3

Page 9: Circuit Reconfiguration - EPRI

American Electric Power 4.3 Distribution Grid Management

Document ID: Use case #

3.3

Title: Circuit Reconfiguration Use Case

Subject Matter Expert: Author: Reviewed by: Ron Cunningham Brian D. Green Ron Cunningham

Page 9 of 12 Copyright © 2011 American Electric Power Company Rev. 2

Use Case Step

Triggering Event

Description Of Process Information To Be Exchanged

Producer Receiver Message Type

24 Receipt of CRC Reconfiguration command

Reconfiguration Device functions according to the Device Command

Device Commands

Reconfiguration Device

Internal Proprietary

25 Reconfiguration Devices sends Device Status Updates to CRC via D-RTU

Status Updates Reconfiguration Device

D-RTU DNP3

26 D-RTU sends Feeder Device Device Status Updates to the CRC

Status Updates D-RTU CRC DNP3

27 D-RTU sends Status Updates to D-SCADA

Status Updates D-RTU D-SCADA

DNP3

28 D-SCADA sends Equipment Status Updates to the OMS

Equipment Status Updates

D-SCADA

OMS Proprietary

29 D-SCADA sends Equipment Status Updates to the Distribution Historian

Equipment Status Updates

D-SCADA

Distribution Historian

Proprietary

Page 10: Circuit Reconfiguration - EPRI

American Electric Power 4.3 Distribution Grid Management

Document ID: Use case #

3.3

Title: Circuit Reconfiguration Use Case

Subject Matter Expert: Author: Reviewed by: Ron Cunningham Brian D. Green Ron Cunningham

Page 10 of 12 Copyright © 2011 American Electric Power Company Rev. 2

Page 11: Circuit Reconfiguration - EPRI

American Electric Power 4.3 Distribution Grid Management

Document ID: Use case #

3.3

Title: Circuit Reconfiguration Use Case

Subject Matter Expert: Author: Reviewed by: Ron Cunningham Brian D. Green Ron Cunningham

Page 11 of 12 Copyright © 2011 American Electric Power Company Rev. 2

Integration Scenarios: None

The following are the points of integration that must be tested for this use case. Other non-CIM message interfaces may be testable in this use case.

Actor Interface Points

Circuit Conconfiguration Controller

• D-SCADA • Recloser • Circuit Breaker • Interrupting Switch • Switch

OMS • Distribution Historian • D-SCADA

Pre-conditions: None

Post-conditions: None

Exceptions / Alternate Sequences: None

There are no exceptions, unusual events or alternate sequences defined for this use case.

Use Case Step

Triggering Event

Description Of Process Information To Be Exchanged

Producer Receiver Message Type

Message Type(s) Diagram: None

An XML Schema Definition (XSD) diagram shows the normative and informative parts of the message. Not all of the International Electrotechnical Commission’s (IEC) – CIM message optional elements must or will be used in the use of IEC – CIM for this specific use case.

Page 12: Circuit Reconfiguration - EPRI

American Electric Power 4.3 Distribution Grid Management

Document ID: Use case #

3.3

Title: Circuit Reconfiguration Use Case

Subject Matter Expert: Author: Reviewed by: Ron Cunningham Brian D. Green Ron Cunningham

Page 12 of 12 Copyright © 2011 American Electric Power Company Rev. 2

References:

Use Cases or other documentation referenced by this use case include:

• 20100625 AEP Ohio Interoperability Plan V1.docx: Section 4.3.4 (Circuit Re-Configuration)

• 20100625 Use Cases EPRI Report_V2.4.docx: Section 3.3 (Circuit Reconfiguration)

Issues: None

ID Description Status

Miscellaneous Notes: None