Siemens Power Technologies International

2y ago

84 Views

1 Downloads

1.68 MB

36 Pages

Report/dmca

Download PDF

Transcription

EQ Steady State Special TopicsOutline Transformer Models HVDC Short Circuit Dynamics Power Electronics Unbalanced Networks Auxiliary Equipment Q&ARestricted Siemens Industry, Inc. 2013 All rights reserved.Page 211/17/2016Siemens Power Technologies International

EQ Steady State Special TopicsTransformer Models Balanced Three Phase Transformer Model Tap Changers Transformer Attributes CGMES Phase Shifting Transformer DocumentENTSOE CGMES v2.4.14 28May2014 PSTmodelling.pdfRestricted Siemens Industry, Inc. 2013 All rights reserved.Page 311/17/2016Siemens Power Technologies International

EQ Steady State Special TopicsTransformer Attributes TransformerEnd.ratedU: Nameplate Voltage of the Transformer Winding TapChanger.neutralU: Voltage at the Neutral Tap RatioTapChanger.stepVoltageIncrement: Percent of neutralU Per latest ENTSOE requirements: ratedU neutralU PhaseTapChangerTablePoint.angle: A positive value indicates a positive phaseshift from the winding where the tap is located to the other winding TapChangerTablePoint.ratio Per unit of neutralU for each tap position TapChangerTablePoint.x x(nominal) * (1 x(from this class)/100)Restricted Siemens Industry, Inc. 2013 All rights reserved.Page 711/17/2016Siemens Power Technologies International

EQ Steady State Special TopicsTap Changer Control lFalseNot presentA real and fixed tap that is not controlled and cannot be moved onload (manual tap change). Power flow cannot be set to change the tapfor voltage control during the calculation.TrueNot presentTruePresentA real and fixed tap that is not controlled but can be moved underload, e.g. manually. Power flow cannot be set to change the tap forvoltage control during the calculation. Optimal power flow mighthave access to these taps and change in order to optimize. Also StateEstimator may estimate the tap position to find a better solution forthe system state.A real tap with a possibility to change taps automatically for voltagecontrol/active power (load flow) enabled.FalsePresentDescriptionDepending on the RegulatingControl.enabled andTapChanger.controlEnabled in SSH, the power flow shall or shall notparticipate in the regulation. In cases where the RegulatingControl isassociated with more than one tap changer or other devices theattribute TapChanger.controlEnabled can be set to false in order to setwhich of the taps are not enabled.An artificial tap changer can be used to simulate control behavior inpower flow.Restricted Siemens Industry, Inc. 2013 All rights reserved.Page 811/17/2016Siemens Power Technologies International

EQ Steady State Special TopicsHVDC 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.Restricted Siemens Industry, Inc. 2013 All rights reserved.Page 911/17/2016Siemens Power Technologies International

EQ Steady State Special TopicsShort Circuit All short circuit data required by IEC 60909 Most data is integrated into the Equipment classes of the Wires package Covered in a separate profile All positive sequence reactances on the synchronous machines aresaturated values to support short circuit Grounding network MutualCoupling Class New Fault Package defines fault informationRestricted Siemens Industry, Inc. 2013 All rights reserved.Page 1411/17/2016Siemens Power Technologies International

EQ Steady State Special TopicsDynamics Totally Separate Package Hooks into classes in the Wires Package Generator and Load models are very detailed Undergoing extensive Vender TestingRestricted Siemens Industry, Inc. 2013 All rights reserved.Page 2011/17/2016Siemens Power Technologies International

EQ Steady State Special TopicsDynamics - Future Still need DC, FACTS, Relay, Shunt Compensator Models Complete development of User Defined models Future of Distributed Energy ResourcesRestricted Siemens Industry, Inc. 2013 All rights reserved.Page 2911/17/2016Siemens Power Technologies International

EQ Steady State Special TopicsUnbalanced Networks IEC 61970 standard Optional class and attribute selections to build unbalanced networks AclineSegmentPhase SwitchPhase EnergyConsumerPhase ShuntCompensatorPhase Terminal.phases TransformerTank and TransformerTankEnds Create open delta transformer banks Define single and two phase circuits for overhead and undergroundRestricted Siemens Industry, Inc. 2013 All rights reserved.Page 3011/17/2016Siemens Power Technologies International

17.11.2016 · Page 8 11/17/2016 Siemens Power Technologies International TapChanger. ltcFlag TapChanger. TapChangerControl Description False Not present A real and fixed tap that is not controlled and cannot be moved on load (manual tap change). Power flow cannot be set to change the tap for voltage control during the calculation.