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EQ Steady State Special Topics Chuck DuBose, June 2014
Siemens Power Technologies International
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EQ Steady State Special Topics Outline
•Transformer Models •HVDC
•Short Circuit
•Dynamics •Unbalanced Networks •Q&A
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EQ Steady State Special Topics Transformer Models
•Balanced Three Phase Transformer Model
•Tap Changers
•Transformer Voltage Attributes •New CGMES Phase Shifting Transformer Document NTSOE_CGMES_v2.4.14_28May2014_PSTmodelling.pdf
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EQ Steady State Special Topics Transformer Models
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EQ Steady State Special Topics Ratio Tap Changer Model
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EQ Steady State Special Topics Phase Tap Changer Model
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EQ Steady State Special Topics Transformer Voltage Attributes
•TransformerEnd.ratedU – Nameplate Voltage of the Transformer Winding
•TapChanger.neutralU – Voltage at the Neutral Tap
•RatioTapChanger.stepVoltageIncrement – Percent of Nominal Voltage or ratedU?
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EQ Steady State Special Topics HVDC
•Old Rectifier/Inverter classes were removed
•Represent more detailed models • DC switch classes • DCConductingEquipment • DCEquipmentContainer • DCSeriesDevice • DCTerminal • ACDCConverterDCTerminal • DCTopologicalIsland
•Associate AC equipment with DC Equipment
•Specific models for voltage and current source converters.
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EQ Steady State Special Topics HVDC Containment
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EQ Steady State Special Topics HVDC Connectivity
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EQ Steady State Special Topics HVDC Converter Unit
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EQ Steady State Special Topics HVDC Example 301 Document Sec 4.4.13
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EQ Steady State Special Topics Short Circuit
•All short circuit data required by IEC 60909
•Most Data is integrated into the equipment records of the Wires Package
•New Fault Package defines fault information
•Covered in a Separate Profile
•All positive sequence reactances on the synchronous machines are saturated values to support short circuit
•MutualCoupling Class
•Fault Class
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EQ Steady State Special Topics Mutual Coupling Class
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EQ Steady State Special Topics Mutual Coupling Example
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EQ Steady State Special Topics Fault Package
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EQ Steady State Special Topics Dynamics
•Totally Separate Package
•Hooks into classes in the Wires Package
•Generator and Load models are very detailed •Undergoing extensive Vender Testing
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EQ Steady State Special Topics Dynamics Standard Signal Connections
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EQ Steady State Special Topics Dynamics to Equipment Connections
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EQ Steady State Special Topics ExcAC1A Exciter Example - CIM
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EQ Steady State Special Topics ExcAC1A Exciter Example - How It Works
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EQ Steady State Special Topics Dynamics Model Vender Testing Results
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EQ Steady State Special Topics Dynamics Model Vender Testing Results
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EQ Steady State Special Topics Dynamics - Future
•Still need DC, FACTS, Relay, Shunt Compensator Models
•Complete development of User Defined models
•Future of Distributed Energy Resources
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EQ Steady State Special Topics Unbalanced Networks
•IEC 61970 standard
•Optional class and attribute selections to build unbalanced networks • AclineSegmentPhase • SwitchPhase • EnergyConsumerPhase • ShuntCompensatorPhase • Terminal.phases • TransformerTank
•Create open delta transformer banks
•Define single and two phase circuits for overhead and underground
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EQ Steady State Special Topics Two Phase Unbalanced Transformer Model
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EQ Steady State Special Topics Unbalanced Line Model 301 Document Sec 4.4.8
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EQ Steady State Special Topics Q&A
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