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Portable Data and Modeling for Electromagnetic Transient An Portable Data and Modeling for Electromagnetic Transient An

Portable Data and Modeling for Electromagnetic Transient An - PowerPoint Presentation

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Uploaded On 2017-06-27

Portable Data and Modeling for Electromagnetic Transient An - PPT Presentation

Jean Mahseredjian jeanmpolymtlca Ecole Polytechnique de Montreal 1 New IEEE Task Force Cochairmen Jean Mahseredjian and Taku Noda Portable Data and Modeling for Electromagnetic Transient Analysis programs ID: 563947

emtp xml cim modeling xml emtp modeling cim model type data electromagnetic standard transients power time design simulation format

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Slide1

Portable Data and Modeling for Electromagnetic Transient Analysis programs

Jean Mahseredjianjeanm@polymtl.caEcole Polytechnique de Montreal

1Slide2

New IEEE Task Force

Co-chairmen: Jean Mahseredjian and Taku NodaPortable Data and Modeling for Electromagnetic Transient Analysis programsObjectives

Explore the possibility to define a portable (common) input format (PIF) for all electromagnetic transient programs (EMTP-type programs)

Ultimately the format may be extended to modeling methods/definition in addition to modeling data

Ultimate goal: Establishment of a standardParticipants: Off-line and real-time EMTP-type software vendorsUniversitiesUtilities (important support due to predicted impact)

2Slide3

Subject

Simulation and analysis of power system transientsEMTP-type applications: Capability to simulate electromagnetic transientsCapability to simulate electromechanical transients (detailed)Time-domain simulations, circuit basedWideband models: from steady-state to switching transients and to lightning

Time-steps: microseconds, rarely exceeds 0.5 ms

Duration of simulation: 50 – 400 seconds

For very large networks, a simulation for 59 secs can take a day3Slide4

Current Situation

Modern EMTP-type packages include multiphase load-flow solversBy comparison, PSS/E does electromechanical transients and steady-stateEMTP can do the same, but with much higher precision. It simulates and finds the waveforms (exact) and includes harmonicsPSS/E will  find phasors but does not include harmonics Current Situation

There are no portability standards between applications in the same field

CIM: needs to be augmented to include EMTP attributesSlide5

Importance of Portability

Model reusabilityIncreased productivity: industry and researchBenefiting from the advantages of various applications

Example: same design for offline and real-time simulations

Example: controller design, controller simulation

Single model design: plug-and-play modelsSame model for several frequency rangesFrom load-flow to transients (electromechanical, electromagnetic, mean-value models, manufacturer codes)

Codes for control systems

Codes for power devices or complete systems with controls

Futuristic: plug-and-play and drag-and-drop

5Slide6

UML, XML, DTD, RDF, CIM/CPSM

Unified Modeling LanguageDefines notation and semantics for object-oriented modelsGraphical representationXML: eXtensible Markup LanguageDTD: Document Type DefinitionResource Description FrameworkIEC 61970-501: XML format for network model exchanges using RDFCIM/XML: Translated into XML using the relational RDF syntax to describe instances of CIM objects and their relationships

CPSM: Common Power System Model (IEC 61970-452)

XML data file transfer requirements, subset of classes

Adopted by NERC: standard for TSO data exchange6Slide7

CIM/EMTP-RV

Translation to a proprietary formatTopological dataUnique identifiers for devicesDevice dataSpecific model issuesValidationElimination of useless data for simulationExample: Extra breakers

Usage of CIM/CPSM for filtering data

Object mapping

ACLineSegment: PI-sectionShuntCompensator: RLCEnergyConsumer: PQ loadGeneratingUnits and SynchronousMachines: PV, PQ or slackGraphical presentationAutomatic drawing, positioning, positional dataVarious presentation aspectsNew requirements for existing applications

7Slide8

Challenges

EMTP-type models are complexThere are more differences between solution and modeling methods from various software vendorsThere is a strong requirement from vendors and users to maintain Graphical User Interface visualization of networks

The new standard must develop GUI portability

The GUIs are complex

CIM-XML or just XML?Establishing a new XML standard from scratch will simplify the standardization path.Compatibility with CIM has many advantages: established standard, exchanging with traditional power system software packages, visibility8