design and implementation of a hybrid power plant ...€¦ · hybrid power plants:...
TRANSCRIPT
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DESIGN AND IMPLEMENTATION OF A HYBRID POWER PLANT
CONTROLLERGeorge Alin Raducu
09.05.2018
Content
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Vattenfall at a Glance
Motivation for the Hybrid Power Plant Controller
Controller Design
Simulation Test Cases and Results
Field Implementation
Conclusions and Outlook
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Motivation
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Today‘s onshore wind farms layout
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Point of Common
Connection
Wind Farm Controller
Measurements
Operation Set-Points
TSO Commands
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Wind Farm Controller
Solar Park Controller
Battery Controller
Point of Common
Connection
Renewable Power Plants
SCADA
Energy
Signals
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Wind Farm Controller
Solar Park Controller
Battery Controller
Point of Common
Connection
Solution: Renewable Park Controller
Renewable Park Controller
SCADA Markets / Grid
Energy
Signals
Vattenfall’s Renewable Park Controller - Enhanced optimization functions based on Energy market spot prices, Weather Forecast & Grid demands
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Challenges and potential with Renewable Power Plants
• Challenges• Power Limitations in the Point of Common Connection
• Increase the utilization of the grid connection point whilesecuring against overloading
• Synchronization of the Ancillary Services provided bydifferent generation sources
• Flexibility in operating different generation and/or storageunits
• Multiple systems from various suppliers to service andmaintain
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Potential LCoE Reduction: Increased utilization of the shared grid
connection or agreements
LRoE Improvement: Approaching subsidy-free marketenables participation in different grid services markets toenhance additional revenues
Hybrid Power Plants: Wind+Solar+Storage connected ona common Point of Common Connection, increasedpower generation flexibility
Vattenfall in control with different smart optimizationalgorithms based on the market related functions,weather conditions and spot price forecast
Maximize yield (revenue) while providing grid supportfunction and minimizing fatigue loads
Easier Operation
Increased Flexibility
Controller Design
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Renewable Park Controller
Renewable Park Controller – Architectural Diagram
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Active Power Control
Reactive Power Control
Setpointdispatch
SCADA&
Measurements
Wind Farm,
PV Farm,
BESS
&
Grid
Plant design-WPP&SPP
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• Only main dynamics of the WPP and SPP included, i.e. first order transferfunctions plus delays introduced by the grid meters.
• Possibility to have different ramp rate limitations
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Plant Design - BESS
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• Similar to WPP and SPP in terms of dynamic behaviour.
• Contains additional information regarding SOC and conversion efficiency.
RPC Simulations Test Cases
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Simulated Hybrid Power Plant• Wind Power Plant : 122.4 MW
• Solar Power Plant : 40 MW
• Battery : 12 MW(h)
• Total Capacity (Base Power) : 174.4 MW
• Grid Connection Point Capacity: 130MW
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Case 1: Step Changes in Setpoint
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Case 2: Varying Possible Power
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Case 2a: Without battery support
Case 2b: With battery support
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Field Implementation
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The Field version
SCADAPLC Real plant
Generated code from Matlab/Simulink
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Conclusions and Outlook
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Conclusions
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The solution for steering and optimization of a Hybrid Power Plant was presented
Main challenges and potential were highlighted
The Renewable Park Controller design was shown
For validating the controller design simulations results have been introduced
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Outlook
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Verification of the Renewable Park Controller prior to the field implementation in aHardware in the Loop test setup
Field Implementation
Field Test and Verification
Continue the initial development with Enhanced Optimization Solutions based onEnergy market spot price, Weather Forecast, Ancillary Services and grid demands
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THANK YOU!!