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
Download Presentation The PPT/PDF document "Portable Data and Modeling for Electroma..." is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
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