Transcript
ASTATCOM-Control Scheme
forGrid Connected Wind Energy
Systemfor
Power Quality Improvement
WIND ENERGY GENERATING SYSTEM
Load
kinetic Energy
Mechanical Energy
Electrical Energy
POWER QUALITY
International Electro-Technical Commission (IEC) Guidelines.
Technical Challenges.
Non-Linear Loads.
Development of Grid Co-ordination Rule.
Voltage variation
Harmonics
Self Excitation of Wind Turbine Generating System
Wind turbine location in power system.
POWER QUALITY ISSUES
STATCOM
A STATCOM is a voltage-source converter.
Voltage compensation across the ac transmission Line.
Increased line stability during transients.
Commonly used for dynamic power factor correction.
Elimination (or at least a major reduction) of voltage fluctuations at the plant
input.
BATTERY ENERGY STORAGE SYSTEM
(BESS)
&
Bang-Bang Controller
Voltage compensation of ac transmission lines using a STATCOM
Grid Connected System for Power Quality Improvement
Source voltage and Current waveforms of test system
without Wind farm and STATCOM
Source voltage and Current waveforms without STATCOM
Source voltage and current waveforms with STATCOM
CONCLUSION
• The power quality issues and its consequences are presented.
• STATCOM has a capability to cancel out the harmonic parts of the load current.
• STATCOM maintains the source voltage and current in-phase and support the reactive power demand for the wind generator and load at PCC.
• Thus the proposed scheme fulfills the power quality norms as per the IEC standard 61400-21.
APPLICATIONS
Power system voltage control applications.
Large electric arc furnace installations.
Reactive power compensation applications.
Railway or underground systems with huge load variations.
FUTURE SCOPE
• STATCOM can be replaced with UPQC for better power control.
• Replacing the induction generator with doubly fed induction generator is preferred for better results.
• In future the off-shore wind turbines will be implemented due to its advantages of producing high power.
• SVC MaxSine STATCOM Solution for future.
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