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Published byClyde Booker Modified over 9 years ago
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PSCAD Simulation of Grid Tied Photovoltaic and Wind Farms
By Abdulrahman Kalbat
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PSCAD/EMTDC PSCAD: Power Systems Computer Aided Design
PSCAD is Graphical User Interface for EMTDC simulation engine EMTDC: Electromagnetic Transients including DC Simulate time domain instantaneous response of the power systems
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PSCAD Vs. Simulink PSCAD’s interface is specialized for power system networks Faster time domain simulation speed Matlab/Simulink Interface in PSCAD Availability of the models for Solar Panels and Wind Turbines Venayagamoorthy, Ganesh K., “Comparison of power system simulation studies on different platforms – RSCAD, PSCAD/EMTDC, and SIMULINK SimPowerSystems,” International Conference on Power System Operations and Planning, 2005
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Power Network Under Study
Complete Utility Grid (from generation to distribution) Utility Scale PV System Utility Scale Wind Turbine System
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Previous Research Done
Electrical model development and validation for distributed resources for NREL [1] Modeling of a photovoltaic system with a distributed energy storage system [2] Power quality effects of high PV penetration on Distribution Networks [3] [1] M.G. Simões, B. Palle, S. Chakraborty, and C. Uriarte, “Electrical Model Development and Validation for Distributed Resources ,” NREL, Golden, CO, 2007 [2} Anthony W. Ma, “MODELING AND ANALYSIS OF A PHOTOVOLTAIC SYSTEM WITH A DISTRIBUTED ENERGY STORAGE SYSTEM,” M.S. Thesis, Dept. Elect. Eng., California Polytechnic State Univ., San Luis Obispo, CA, 2012 [3] Minas Patsalides, et. al., “Towards the establishment of maximum PV generation limits due to power quality constraints,” Electrical Power and Energy Systems,
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Expected Results Effects of PV and Wind systems on the power quality of the utility grid Frequency Voltage System’s response to faults: Line to line faults Line to ground faults Lightning strikes
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Solar Photovoltaic Model
Directly convert solar energy into electricity Maximum Power Point Tracker Model Ensure optimum output at varying temperature and insolation Regulate and step-down the high voltage of the PV array. Models developed by: Athula Rajapakse, Dept. of Electrical and Computer Engineering, Univ. of Manitoba, Winnipeg, Canada
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Grid Connected PV
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3-phase Inverter Bridge
Grid Connected PV Solar Radiation + Cell Temperature Data PV Array + Output Capacitor DC-DC Converter for MPP Tracking DC-bus Capacitor and Start-up Charging 3-phase Inverter Bridge [1] Anthony W. Ma, “MODELING AND ANALYSIS OF A PHOTOVOLTAIC SYSTEM WITH A DISTRIBUTED ENERGY STORAGE SYSTEM,” M.S. thesis, Dept. Elect. Eng., California Polytechnic State Univ., San Luis Obispo, CA, 2012 Anthony W. Ma, “MODELING AND ANALYSIS OF A PHOTOVOLTAIC SYSTEM WITH A DISTRIBUTED ENERGY STORAGE SYSTEM ,” M.S. Thesis, Dept. Elect. Eng., California Polytechnic State Univ., San Luis Obispo, CA, 2012
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Maximum Power Point Tracker
Variable Solar Radiation Increase Solar Radiation Increase Short Circuit Current
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Maximum Power Point Tracker
Variable Temperature Increase Temperature Decrease Open Circuit Voltage
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Maximum Power Point Tracker
Maximum Power Yield
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Maximum Power Point Tracker
Regulate and step-down the high voltage of the PV array.
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3-Phase Inverter
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3-Phase Inverter Output Current Output Voltage
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Wind Turbine Model Inputs Inputs
Vw: Wind speed (must be a positive value) [m/s] W: Machine mechanical speed [rad/s] Beta: Pitch angle [°] Outputs Tm: Output torque of the turbine [p.u.] P: Output power of the turbine [p.u.] Inputs Wm: Mechanical speed of the machine [rad/s] Pg: Power output of the machine based on the machine rating [p.u.] Output Beta: Pitch angle [°]
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Thank You
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