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Driving economic growth, educational innovation, and workforce development for South Carolina
Clemson University Restoration Institute
Dr. Nikolaos RigasAssociate Director
…keeping the best and the brightest…accelerating new innovations into the market…securing an innovation economy…creating new economic opportunities…fostering public / private partnerships…developing the workforce of the future
It’s about…
KEY TECHNICAL AREAS Power Systems, Systems Engineering, Logistics, Materials, Water Ecology, Workforce Development and K-12 STEM
‘Accelerating New Technologies to Market and Educating the workforce of the future’
GRADUATE PROGRAMS200 Graduate Students12 Faculty40 Research Scientist and Staff
Zucker Family Graduate Education Center
Phased Expansion Linking Education and Public /Private Research Facilities
Graduate Education Programs (200 Graduate Students) TT appointments in CoES departments (12) Research Scientists and Staff (40) Education & research programs in: Smart Grid Energy Systems Logistics Materials Mechatronics Water Ecology
Who will be Located at the CURI Energy Campus?
Complements 20 Main Campus Faculty in Energy
Related Areas
Energy Systems Innovation Center
Objectives: Accelerate the development of new technology into the electrical market to reduce the cost of energy delivered.
Establish long term partnerships with industry for work force development, research and education.
Energy Systems Innovation Center: Facility Layout
World-class mechanical and electrical testing infrastructure for wind turbines and other multi-megawatt devices.
Grid Simulator
7.5 MW Test Bench
15 MW Test Bench
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Value Proposition
• Improved preventative maintenance program and operations.
• Reproduce critical field events.
• Testing and failure analysis.
$$ Lower cost of energy delivered $$
Wind Turbine Powertrain
Simulating the Simulator
Physical System
Hardware Simulator of
Physical System
15 MW Hardware In the Loop (HIL)
electric grid simulator
7.5 MW and 15 MW wind
turbine nacelle test benches
Mathematical Simulation of
Hardware Simulator
MATLAB,Simulink,
FPGA models of grid simulator
equipment
MATLAB,Simulink, Simpack
models of test benches and DUT
Naturally Interact
Simulation
Naturally Interact
Determining Natural Frequencies of the System
7.5 MW Wind Turbine Test Facility
15 MW Wind Turbine Test Facility
15 MW Hardware-in-the-Loop Grid Simulator - Overview
Electrical Equipment Under Test
Hardware-in-the-Loop Grid Simulator
Advanced Converter Technology
Real Time Digital Simulator
Simulated Power System
A power system is simulated and reproduced in real-time in order to assess grid compatibility of the device.
Dedicated Power System Substation
Experimental, prototype, and commercializedelectrical equipment can be rigorously testedwithout exposing the power system to the risksinvolved with field testing.
Project Partners
Duke Energy
Santee Cooper
Savannah River National Laboratory
SCANA
TECO-Westinghouse Motor Company
U.S. Department of Energy, EERE
23.9 kV Utility Bus
7.5MW Test Stand
15MW Test Stand
Graduate Education Center500 kW Solar Array
23.9 kV 20 MVA Test Bus
Experimental Bay #1Experimental Bay #2Experimental Bay #3
15 MW HIL Grid Simulator
Up to three independent grid integration tests can run simultaneously in each of the three experimental bay’s
4.16 kV 5 MVA Test Bus
NSF and Duke Energy FundedSituational Control Room Lab
15 MW Grid Integration Testing, Research and Education Facility
& ¢̈«̈³̧ 3̈¦«¤ ,̈¤ $ ̈¦± ¬
Variable 23.9 kV (50/60 Hz)
23.9 kV (60 Hz) Utility Bus
Market ApplicationsEV Charging Stations Utility Scale Energy Storage
Large Solar PV Converter
Traditional Distributed Generation (Diesel, NG. etc.)
Micro-Grid Applications
Wind Energy
Large Inverters
Aerospace
Integrating new technologies into the electrical grid
• Power Set Points• Voltage and Frequency Variations• Controls Evaluation
• Power Set Points• Voltage and Frequency Variations• Controls Evaluation
Steady State and Envelope Evaluations
• Voltage Flicker• Harmonic Evaluations• Anti-Islanding (Software)
• Voltage Flicker• Harmonic Evaluations• Anti-Islanding (Software)
Power Quality Evaluations
• Frequency Response• Active Volt-VAR Control• Active Frequency Regulation
• Frequency Response• Active Volt-VAR Control• Active Frequency Regulation
Ancillary Services
• Low Voltage Ride-Through (LVRT)• Unsymmetrical Fault Ride-Through• High Voltage Ride-Through HVRT)
• Low Voltage Ride-Through (LVRT)• Unsymmetrical Fault Ride-Through• High Voltage Ride-Through HVRT)
Grid Fault Ride-Through Testing
• Recreation of field events with captured waveform data
• Recreation of field events with captured waveform dataOpen Loop Testing
• Simulated dynamic behavior and interaction between grid and the device under test
• Simulated dynamic behavior and interaction between grid and the device under test
Hardware-In-the-Loop Testing
Increasing level of difficulty
RTDS®
National InstrumentsInterface Controller
Voltage and Current Set Point Commands
Real Voltage and Current Measurements
15 MW TECO-Westinghouse Power Amplifier
BUS #NVoltage and Current
Information
Wind Turbine“I’m connnected at Bus #N”
Solar Inverter“I’m connnected at Bus #N”
Utility Battery Storage“I’m connnected at Bus #N”
Micro and Smart Grids“I’m connnected at Bus #N”
Megawatt Generator“I’m connnected at Bus #N”
Real Voltages and Currents associated with BUS #N
Variable FrequencyGenerators
“We’re connected at Bus #N”
Hardware-in-the-Loop Testing
HIL Testing Capabilities: Wind Energy Applications
Wind Farm and Collector Bus Experiments
Parallel Model Verification
Simulated Grid Bus
• Classic lumped WTG stability study
• Disturbances external to the farm
• Classic lumped WTG stability study
• Disturbances external to the farm
Wind Farm Modeling
• Model several WTGs in parallel• Disturbances internal to the farm• Model several WTGs in parallel• Disturbances internal to the farm
Collector Bus Modeling
• Present the same test case to both a simulated machine and the actual WTG under test
• Present the same test case to both a simulated machine and the actual WTG under test
Parallel Model Verification
• Offshore versus land based• Stiff versus weak grid conditions• Offshore versus land based• Stiff versus weak grid conditions
Application Specific Issues
Fault Ride-Through Options with the Grid Simulator
Reactive Divider Uncontrolled
Well established method
Trial and error method with low
SC ratios
Converter Only
More flexible test method
Exposes converter to DUT fault duty
Controlled Reactive Divider
Clemson Solution
Increased In-Fault voltage accuracy
Allows for high DUT fault duties
• Clemson’s unique combination of a power converter and reactive divider network provides several different testing options
• For smaller machines, Clemson approach to Fault Ride-Through (FRT) testing is backwards compatible with the two existing methods of performing FRT evaluations
• The first test article will provide the platform for Clemson researchers to evaluate advantages of all three methods and their impact on the DUT
Electrical Capabilities
Overall Facility Electrical Capabilities
Main Test BayNominal Voltage 24 kV (50/60 Hz)Nominal Power 15 MVA (7.5 MVA)Frequency Range 45 to 65 HzSequence Capabilities 3 and 4 wire operationOvervoltage capabilities 133% Continuous OvervoltageFault Simulation Yes (includes Reactive Divider)Hardware-In-the-Loop Yes (limit 1 HIL total)Small Test Bay 1Nominal Voltage 4160 V (50/60 Hz)Nominal Power 3.75 MVA (3 MW @ 0.8 PF)Frequency Range 45 to 65 HzSequence Capabilities 3 and 4 wire operationOvervoltage capabilities 133% Continuous OvervoltageFault Simulation Limited to Converter OnlyHardware-In-the-Loop Yes (limit 1 HIL total)Small Test Bay 2Nominal Voltage 4160 V (50/60 Hz)Nominal Power 3.75 MVA (3 MW @ 0.8 PF)Frequency Range 45 to 65 HzSequence Capabilities 3 and 4 wire operationOvervoltage capabilities 133% Continuous OvervoltageFault Simulation Limited to Converter OnlyHardware-In-the-Loop Yes (limit 1 HIL total)
Three Independent Test Bays
Developing new technologies and driving innovation…(patent submitted)
Thank You…
…..Questions?