Farid Katiraei Ph.D. Candidate

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Presentation transcript:

Dynamic Analysis and Control of Distributed Energy Resources in a Micro-Grid Farid Katiraei Ph.D. Candidate Energy Systems Group, ECE Dept. University of Toronto Email: katiraei@ele.utoronto.ca Phone: 416-820-8279 ECE Graduate Symposium June 24, 2005 University of Toronto

Overview Introduction: Definition: Challenges: Conclusion Distributed Energy Generation Introduction: Definition: Challenges: Conclusion Concept Micro-Grid Formation Operation Control Requirements Power Management Transient Performance

Distributed Energy Generation DR Distributed Resource (DR): Small-scale, modular, power generation units located close to where the energy is used Underlying DR drivers: Re-Regulation Electricity Price Volatility Environmental Concerns Power Quality and Reliability Technological Development Distributed Generation (DG) Distributed Storage (DS) Combustion Engines Gas Turbines Wind Turbines Fuel Cells Solar thermal Photovoltaic Low-Head Hydro Geothermal Battery Storage Capacitor Storage Flywheels SMES

Micro-Grid ~ ~ ~ _ Utility Grid CB Central Power Plant Wind farm Combined Generation ~ _ Photovoltaic Residential Customers Battery Storage Micro-Turbine Industrial Load Commercial Customer

Micro-Grid Formation and Operation Grid-Connected Mode Islanding Initiation: Pre-planned switching Un-planned switching Islanding Transition Islanding Detection Dynamic Power Balance Autonomous Operation Frequency Restoration Power Sharing

Micro-Grid Challenges System stability issues (Angle and Voltage instability) Power quality issues (Voltage and Frequency variations) Power management issues (Real power sharing, Reactive power requirements)

Project Overview System topologies Control strategies Electronically interfaced DG Control strategies Small-signal models Eigenvalue analysis Transient analysis Operating scenarios Power management Micro-Grid Type Interface requirements Control systems DG Units

Conclusions Presence of an electronically-interfaced DG unit: Provide fast/flexible control of Real and Reactive power generation. Maintains angle/voltage stability of the micro-grid even after severe islanding transients. Enhance voltage quality at specific bus. The proposed power management strategies: Effectively share real power of loads among DR units. Improve dynamic behavior of the system during islanding transients. Micro-Grid is a viable option for future power systems.

Thank You Question Email: katiraei@ele.utoronto.ca Phone: 416-820-8279 ECE Graduate Symposium F.katiraei © 2005 University of Toronto