Transcript IEC 61850 Communication Networks and Systems In

IEC 61850 Communication
Networks and Systems In
Substations:
An Overview for Users
Drew Baigent
GE Multilin
Markham, Ontario
Mark Adamiak
GE Multilin
King of Prussia, PA
Ralph Mackiewicz
SISCO, Inc.
Sterling Heights, MI
SIPSEP 2004
Monterrey, Nuevo León, México
Miércoles 10 de Noviembre, 2004
IEC61850 and UCA2
GOAL: One International Standard
IEC
61850
IEC61850 Substation Architecture
Station Bus - 10/100/1000 MB Ethernet
Relay(s)
Subscribe to
Datasets
Relay
IED
Relay
IED
Process Bus
.1/1/10GB
Ethernet
MU Publishes
V/I/Status
Datasets
Clk1
Relay
IED
MU
MU
PT1 I/O Optical PT2 I/O CT2
CT
MU = Merging Unit
Remote
Access
Network
MU
Clk2
Optical I/O Optical
PT
CT
IEC61850 Standard
Part 8
Basic principles
Part 1
Glossary
Part 2
General Requirements
Part 3
System and project management
Part 4
Communication requirements
Part 5
Substation Automation System Configuration
Part 6
Basic Communication Structure
Part 7
Mapping to
MMS and
Ethernet
Sampled Measured Values
Part 9
Mapping to Ethernet
Conformance testing
Part 10
IEC61850 – Primary Parts
• Part 6-1: Substation Configuration Language (SCL)
• Part 7-2: Abstract Communications Service Interface
(ACSI) and base types
• Part 7-3: Common Data Classes (CDC)
• Part 7-4: Logical Nodes
• Part 8-1: Specific Communications Service Mappings
(SCSM) - MMS & Ethernet
• Part 9-2: SCSM - Sampled Values over Ethernet
• Part 10-1: Conformance Testing
IEC61850 Class Model
Name
ObjectName
ObjectReference
SERVER
Physical Device:
access by network address
1
1..*
LOGICAL-DEVICE
1
1..*
LOGICAL-NODE
1
1..*
DATA
1
1..*
DataAttribute
Enables data from multiple
devices to be aggregated
into a single physical device
(data concentrator)
Logical Nodes
• A named grouping of data and associated
services that is logically related to some
power system function.
dddXCBR1
Logical Node Instance #
Logical Node Name per
IEC 61850-7-4 (breaker)
Optional Application Specific Prefix
IEC61850-7-4 Logical Nodes
Name
Axxx
Cxxx
Gxxx
Ixxx
Lxxx
Mxxx
Pxxx
Rxxx
Sxxx
Txxx
Xxxx
Yxxx
Zxxx
Wxxx
Oxxx
Hxxx
Nxxx
Bxxx
Fxxx
Description
Automatic Control (4). ATCC (tap changer), AVCO (volt. ctrl.), etc.
Supervisory Control (5). CILO (Interlocking), CSWI (switch ctrl), etc.
Generic Functions (3). GGIO (generic I/O), etc.
Interfacing/Archiving (4). IARC (archive), IHMI (HMI), etc.
System Logical Nodes (2). LLN0 (common), LPHD (Physical Device)
Metering & Measurement (8). MMXU (meas.), MMTR (meter.), etc.
Protection (28). PDIF, PIOC, PDIS, PTOV, PTOH, PTOC, etc.
Protection Related (10). RREC (auto reclosing), RDRE (disturbance)..
Sensors, Monitoring (4). SARC (archs), SPDC (partial discharge), etc.
Instrument Transformer (2). TCTR (current), TVTR (voltage)
Switchgear (2). XCBR (breaker), XCSW (switch)
Power Transformer (4). YPTR (transformer), YPSH (shunt), etc.
Other Equipment (15). ZCAP (cap ctrl), ZMOT (motor), etc.
Wind (Set aside for other standards)
Solar (Set aside for other standards)
Hydropower (Set aside for other standards)
Power Plant (Set aside for other standards)
Battery (Set aside for other standards)
Fuel Cells (Set aside for other standards)
Logical Node Description - XCBR
SPS
Common Data Class
Data Name
Mandatory/Optional
Description
Single Point Status (SPS) CDC
(e.g. loc)
stVal
Attribute
Name Type
Functional
Constraint
Range of
Values
Mandatory/
Optional
Object Name Structure
Relay1/XCBR1$ST$Loc$stVal
Attribute
Data
Functional Constraint
Logical Node
Logical Device
ACSI
Abstract Communications Service Interface
• Defines a set of Objects
• Defines a set of Services to
manipulate and access those objects
• Defines a base set of data types for
describing objects
ACSI Objects
ACSI Object Class (7-2)
MMS Object (8-1)
SERVER class
Virtual Manufacturing Device (VMD)
LOGICAL DEVICE class
Domain
LOGICAL NODE class
Named Variable
DATA class
Named Variable
DATA-SET class
Named Variable List
SETTING-GROUP-CONTROL-BLOCK class
Named Variable
REPORT-CONTROL-BLOCK class
Named Variable
LOG class
Journal
LOG-CONTROL-BLOCK class
Named Variable
GOOSE-CONTROL-BLOCK class
Named Variable
GSSE-CONTROL-BLOCK class
Named Variable
CONTROL class
Named Variable
Files
Files
ACSI Services
Enable
Self
Describing
Devices
ACSI Services (7-2)
LogicalDeviceDirectory
GetAllDataValues
GetDataValues
SetDataValues
GetDataDirectory
GetDataDefinition
GetDataSetValues
SetDataSetValues
CreateDataSet
DeleteDataSet
GetDataSetDirectory
Report (Buffered and Unbuffered)
GetBRCBValues/GetURCBValues
SetBRCBValues/SetURCBValues
GetLCBValues
SetLCBValues
QueryLogByTime
QueryLogAfter
GetLogStatusValues
Select
SelectWithValue
Cancel
Operate
Command-Termination
MMS Services (8-1)
GetNameList
Read
Read
Write
GetNameList
GetVariableAccessAttributes
Read
Write
CreateNamedVariableList
DeleteNamedVariableList
GetNameList
InformationReport
Read
Write
Read
Write
ReadJournal
ReadJournal
GetJournalStatus
Read/Write
Read/Write
Write
Write
Write
Reporting Features
• Unbuffered Reporting is equivalent to
UCA2 reports
• Buffered reporting enables the server to
retain data if associations are lost enabling
the client to retrieve ALL data.
Relay-Relay Messaging
GSSE:
Generic Substatation
Status Event
128 status bit pairs
InformationReport
GOOSE:
Generic Object Oriented
Substation Event
OSI Connectionless
Non-Routable Profile
Data set containing
named values and status
Ethernet Multicast Address
Ethernet Multicast Address
Published to all devices
subscribed to data on
multi-cast address
Published to all devices
subscribed to data on
multi-cast address
(UCA GOOSE)
GOOSE/GSSE is Reliable Multicast
NON-EXISTENT
New State: 1.Sequence Number = 0
2.State Number++
3. Reset HoldTimer
RETRANSMITPENDING
1. Hold Time Preset ++
2. Start Hold Timer
3. Sequence Number ++
HoldTime expired
SEND Message
SCL – Substation Configuration Language
IEC61850-6-1
• Description language for
communication in electrical substations
related to the IEDs
• XML based language that allows a
formal description of
• Substation automation system and the
switchyard and the relation between them
• IED configuration
SCL File Types
• SSD: System Specification Description.
XML description of the entire system.
• SCD: Substation Configuration Description.
XML description of a single substation.
• ICD: IED Capability Description.
XML description of items supported by an IED.
• CID: Configured IED Description.
XML configuration for a specific IED.
Sampled Measured Values
• A method for transmitting sampled
measurements from transducers such as
CTs, VTs, and digital I/O.
• Enables sharing of I/O signals among IEDs
• Supports 2 transmission methods:
• Multicast service (MSVC) over Ethernet
• Unicast (point-to-point) service (USVC) over serial
links.
SMV Application
IEC61850 Controls
• 4 Control Models:
•
•
•
•
Direct Control with normal security
SBO Control with normal security
Direct Control with enhanced security
SBO Control with enhanced security
• Enhanced Security provides validation and
supervision of the control action and
reporting of status.
IEC61850 Profiles
Relationship to UCA2
CASM
IEC 61850-7-2
(Services and base
data types)
IEC 61850-7-3
(Common Data Classes)
GOMSFE
IEC 61850-7-4
(Logical Nodes)
IEC 61850-8-1
(Mapping to MMS)
Terminology
• UCA2.0
–
–
–
–
GOMSFE
CASM
Brick
GOOSE
• IEC61850
–
–
–
–
CDC
ACSI
Logical Node
Generic Substation
Status Event (GSSE)
UCA2 vs. 61850 Object Models
•
•
•
•
•
Data Object Model
Data Set Model
Association Model
Server Model
Unbuffered Reporting
Model
• Security Model
• Time Model
• Direct and SBO Control
•
•
•
•
•
• GSSE (called GOOSE in UCA2)
•
•
•
•
Data Object Model
Data Set Model
Association
Server
Unbuffered and
Buffered Reporting
No explicit Security
Time
Direct, SBO, enhanced
Control
GOOSE, GSSE, and
GSE Management
UCA2  IEC61850 Migration
• UCA2.0 is mostly a subset of IEC61850.
• Some additional services and objects.
• Some object changes.
• IEC61850 uses SNTP for networked time
synch.
• An IEC61850 client can be compatible with
both UCA2 and IEC61850.
Benefits of IEC61850
SIPSEP 2004 Communications Panel
Session
Ralph Mackiewicz
SISCO, Inc.
[email protected]
Keys to Obtaining Benefits
• Requires a view of cost beyond just the
purchase price.
• The benefit of an IEC61850 device is not in the
price of the device: Benefit is in lower cost to use
the device.
• The benefit of an IEC61850 system is not in buying
the system: Benefit is in lower costs to start and use
the system.
IEC61850 is Unique
• Not a recast serial RTU protocol
• Designed specifically for LANs to lower life
cycle cost to use a device:
• Cost to install, configure, and maintain
• Real object-oriented approach for SA:
• Supports standardized device models using names
instead of object/register numbers and indexes.
• Standardized configuration language (SCL).
• Feature rich with support for functions difficult to
implement otherwise.
IEC61850 Network Architecture
• Data from IEDs available to all
applications via network.
• Communications unaffected when adding
devices or applications.
• Standard net. gear provides high perf. &
flexibility with environmental protection.
• Applications and IEDs share common:
•
•
•
•
Protocols
Data Format and Context
Data Addressing/naming Conventions
Configuration Language
IEC61850 View of Devices
• Only network addressing requires
configuration in the remote client.
• Point names portray the meaning and
hierarchy of the data.
• Point names can be retrieved from the device
automatically without manual intervention.
• All devices share a common naming
convention.
• Device configurations can be exchanged
using IEC61850-6-1 (SCL) files
Benefits of IEC61850
• High-level services enable self-describing
devices & automatic object discovery saving
$$$$$ in configuration, setup and maintenance.
• Standardized naming conventions with power
system context eliminates device dependencies
and tag mapping saving $$$$ in config., setup,
and maintenance.
• Standardized configuration file formats enables
exchange of device configuration saving $$$$ in
design, specification, config., setup, and maint.
Benefits of IEC61850
• Higher performance multi-cast messaging for
inter-relay communications enables functions not
possible with hard wires and save $$$$ in wiring
and maintenance.
• Multi-cast messaging enables sharing of
transducer (CT/PT) signals saving $$$$ by
reducing transducers and calibration costs.
Justification
Description
Legacy
Network
Impact
Equipment
Purchase
$
$$
-
Installation
$$
$
+
Configuration
$$$
$
+
Equip/App
Migration
$$$
$
+
Flexibility &
Capability
$$$
$
+
Thank You
Ralph Mackiewicz
SISCO, Inc.
6605 19½ Mile Road
Sterling Heights, MI 48314-1408 USA
Tel: +586-254-0020 x103
Fax: +586-254-0053
E-Mail: [email protected]
Complete presentations and papers will be posted at:
http://www.sisconet.com/techinfo.htm