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PSCAD Simulation of Grid Tied Photovoltaic and Wind Farms. By Abdulrahman Kalbat. PSCAD/EMTDC. PSCAD : Power Systems Computer Aided Design PSCAD is Graphical User Interface for EMTDC simulation engine EMTDC : Electromagnetic Transients including DC

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Presentation Transcript
pscad emtdc
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

www.pscad.com

pscad vs simulink
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

power network under study
Power Network Under Study
  • Complete Utility Grid (from generation to distribution)
  • Utility Scale PV System
  • Utility Scale Wind Turbine System
previous research done
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,

expected results
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
solar photovoltaic model
Solar Photovoltaic Model
  • 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:

AthulaRajapakse, Dept. of Electrical and Computer Engineering, Univ. of Manitoba, Winnipeg, Canada

grid connected pv1
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

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

maximum power point tracker
Maximum Power Point Tracker

Variable Solar Radiation

Increase Solar Radiation  Increase Short Circuit Current

maximum power point tracker1
Maximum Power Point Tracker

Variable Temperature

Increase Temperature  Decrease Open Circuit Voltage

maximum power point tracker2
Maximum Power Point Tracker

Maximum Power Yield

maximum power point tracker3
Maximum Power Point Tracker

Regulate and step-down the high voltage of the PV array.

3 phase inverter1
3-Phase Inverter

Output Current

Output Voltage

wind turbine model
Wind Turbine Model
  • 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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