Introduction to IEC 62361-102 CIM - 61850 Harmonization
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Introduction to IEC 62361-102 CIM - 61850 Harmonization Draft for Paper 1368 CIRED 2019 Tom Berry Schneider Electric Confidential Property of Schneider Electric Agenda Problem Definitions Approach Use case Containers and Equipment Measurements Settings Further work Confidential Property of Schneider Electric | Page 2 The Problem #1 Power systems are complex – multiple groups have worked on different aspects For historical reasons, IEC standards are based on several different models: • IEC 61850 for substation automation and other device level applications • Common Information Model CIM (IEC 61970, IEC 61968, IEC 62325) for control centre applications • Companion Specification for Energy Metering (COSEM) for metering Reference: IEC 62357-1 TR: Power systems management and associated information exchange – Part 1: Reference architecture Confidential Property of Schneider Electric | Page 3 The Problem #2 Data models and harmonization IEC 61970-301 CIM Base ("Wires") IEC 61968-11 Distribution Management IEC 62325-301 Markets IEC 62056-6-9 IEC 61850-7-4 Substation, Feeder IEC 61850-7-410 Hydro-electric 1 2 IEC 61850-7-420 DER … 3 IEC 61850-80-4 IEC 62056 Scope of IEC 62361-102 Confidential Property of Schneider Electric | Page 4 IEC 61850 Communication Networks and Systems for Power Utility Automation Design aim: inter-operability for communication between field devices Features • Hierarchal data model • System Configuration Language (SCL) • Abstract Communication Services • Specific communication technologies • Client-server services • High speed events • Sampled values • Mappings to IEC 60870-5-104 or IEEE1815 (DNP) • … Confidential Property of Schneider Electric | Page 5 Common Information Model Design aim: facilitates the integration of EMS, DMS and other control centre applications • “an abstract model that represents all the major objects in an electric utility enterprise typically needed to model the operational aspects of a utility … as well as the relationships between them” • IEC 61970-301 defines the CIM Base set of packages … functional aspects of an Energy Management System including SCADA • Typical application - state estimation Confidential Property of Schneider Electric | Page 6 Approach One use case at a time … • Define a short list of use cases that link control center applications and substation automation • Fundamental use case : Configuration of real time communication between substations and control centres ‒ Extends the top-down engineering process described in IEC 61850 part 4 and 6 ‒ Adds steps related to the network models within SCADA/EMS/DMS in the control centre • Define mapping between the two models • Identify where the models overlap, and where they are different • Make recommendations for revisions to reduce ambiguities and make transformations easier Confidential Property of Schneider Electric | Page 7 Use case – principal actors and main steps Configuration of real time communication 1. Planning department produces requirements 2. IEC 61850 System Integrator • Defines formal electrical model and export as System Specification Description (SSD) file • Imports capability descriptions for Intelligent Electronic Devices (IEDs) and links to the electrical model • Defines the communication configuration and export as System Configuration Description (SCD) file. 3. Network model manager • Transforms into a CIM based modelling tool for review • Adds any additional CIM information • Applies incremental update for the SCADA/EMS/DMS control centre systems 4. Commissioning - verify all the communications Confidential Property of Schneider Electric | Page 8 Use case – scope of the standards Configuration of real time communication • WHERE is the measurement, WHAT does it mean • IEC 62361-102 CIM - 61850 Harmonization (scope of this presentation) • HOW, WHEN, WHY • IEC 61850-90-2: Using IEC 61850 for communication between substations and control centres • IEC 61850-80-1: Guideline to exchanging information from a CDC-based data model using IEC 60870- 5-101 or IEC 60870-5-104 • IEEE 1815.1 - Standard for exchanging Information between networks implementing IEC 61850 and IEEE Std 1815™ [Distributed Network Protocol (DNP3)] Confidential Property of Schneider Electric | Page 9 Data Flows Control Centre = CIM Configuration #1 Configuration #2 = Equipment + Logical Nodes = Measurements Real Time Substation = IEC 61850 . Confidential Property of Schneider Electric | Page 10 IEC 61850 System Configuration description Language (SCL) . SCL: “a file format for describing communication and parameters related to IED (Intelligent Electronic Device) configurations, communication system configurations, switchyard (function) structures, and the relations between them” [IEC 61850-6] Specific subsets of the language are used for configuring a system or configuring individual IEDs. Sections in an SCL file • Substation / Line / Process identifies the equipment and associations to Logical Nodes in the IEDs • IED Descriptions the logical nodes within each physical IED • Communications connections between IEDs • Data Type Templates details of the data models Confidential Property of Schneider Electric | Page 11 Containers & Equipment identifiers SCL Substation section class Equipment_Mapping tNaming Substation equipment identification and one line CIM::IdentifiedObject - name :tName - mRID :string - desc :string connectivity description has a similar business - name :string requirement within IEC 61850 based system tLNodeContainer engineering tools and within CIM based tPowerSystemResource CIM:: network engineering tools. PowerSystemResource The mapping to CIM should be possible from a tEquipment CIM::Equipment SSD description before any IEDs or Logical Nodes Types have been defined. tAbstractConductingEquipment CIM:: SCL defines equipment type codes ConductingEquipment tConductingEquipment CIM defines equipment type classes CIM::Breaker - type Recommendation R2: The list of device type SCL Equipment identification CIM Equipment Identification codes … should be extended to correspond better with the Common Information Model Confidential Property of Schneider Electric | Page 12 Status, Measurements and Controls Described in the IED and Data Type Template sections IEC 61850 Logical Node = a group of data class Measurement_Mapping tNaming objects (status, measurements controls, CIM::IdentifiedObject - name :tName - mRID :string - desc :string settings, description) IED CIM::RemoteUnit - name :string CIM and traditional SCADA protocols use data tLNodeContainer LogicalDev ice points with a value, quality and time CIM:: tPowerSystemResource PowerSystemResource IEC 61850 allows systems to be designed and LogicalNode CIM::RemotePoint CIM::Equipment configured using fewer but more complex tEquipment CIM::Measurement DataObject objects CIM::RemoteSource CIM::Discrete Some data objects in some types of logical node tAbstractConductingEquipment DataAttribute CIM:: CIM:: ConductingEquipment correspond with CIM measurements MeasurementValue CIM::DiscreteValue tConductingEquipment CIM::Breaker - type SCL Equipment identification SCL Status, Control CIM Measurement Data CIM Equipment Identification and Settings data Confidential Property of Schneider Electric | Page 13 Mapping Logical Nodes: example Logical Nodes Node Description Associated CIM Classes IEC 61850-7-4 IEC 61850-5 MMXU Calculation of currents, voltages, powers and Several instances of Analog impedances in a three-phase system. PIOC, PTOC Instantaneous over-current, time over-current CurrentRelay (a subtype of ProtectionEquipment) XCBR, CSWI, SCBR The LN “circuit breaker” covers all kind of circuit Breaker breakers, able to interrupt short circuits XSWI, CSWI, SSWI The LN “switch” covers all kind of switching devices not Switch, Disconnector, Jumper able to switch short circuits LoadBreakSwitch GroundDisconnector YLTC, ATCC, SLTC, Transformer tap changer, automatic tap change TapChanger AVCO controller, tap changer supervision, automatic voltage RatioTapChanger controller PhaseTapChanger others ZCAP, ARCO, AVCO ARCO controls reactive power flow ShuntCompensator AVCO controls voltage SeriesCompensator ZGEN, AVCO Information exchange with generators GeneratingUnit ZSMC Holds rating data for any type of synchronous machine. SynchronousMachine Confidential Property of Schneider Electric | Page 14 Mapping Data Objects for Status and Measurements IEC 61850-7-4 defines over 600 status or measurement data objects IEC 61970-301 and -452 define only 19 standard MeasurementTypes Logical Data Data Description IEC 61970-301 or Subclass of CIM Node Object Class IEC 61970-452 Measurement MeasurementType MMXU TotW MV Total real power in a three ThreePhaseActivePower Analog phase circuit MMXU TotVAr MV Total reactive power in a three ThreePhaseReactivePower Analog phase circuit MMXU A WYE Phase currents LineCurrent or PhaseCurrent 3 or more instances (magnitude and angle) Angle of Analog MMXU PhV WYE Phase to ground voltages PhaseVoltage 3 or more instances (magnitude and angle) Angle of Analog CSWI, Pos DPC Switch position SwitchPosition Discrete XCBR, [2 bits= intermediate, open, XSWI closed, bad-state] ARCO, Auto SPC Automatic/Manual operation Automatic Discrete ATCC, AVCO Confidential Property of Schneider Electric | Page 15 Mapping other Data Objects . Recommendation R13: CIM based standards should use selected IEC 61850 data object names as MeasurementType names. OR Recommendation R14: [Alternative to R13] add a new attribute in the CIM Measurement class called IEC 61850 DataObject, which