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Flexible AC Transmission Systems (FACTS)
Nawazish Ali
12063122-047
Outline
• Overview Of The Transmission Planning Process
• Role Of Power Electronics Device In Power System
• Introduction ...
Overview Of The Transmission Planning
Process
• Is A Very Complex Process And Recent Trends And Challenges Make It Even
Mo...
Role Of Power Electronics Device In
Power System
• Switching operation because Availability Of High Power Semiconductor
De...
Introduction On FACTS
• Flexible AC Transmission Systems (FACTS) are the name given to the
application of power electronic...
Benefits of FACTS
• To increase the power transfer capability of transmission networks.
• To provide direct control of pow...
FACTS CONTROLLERS
SHUNT
• Static Var Compensator
• Static Synchronous Compensator
• STATCOM
SERIES
•Thyristor Controlled S...
Shunt connected controllers
Static Var Compensator
• The SVC is an excellent tool for achieving dynamic voltage
control of power systems. Increased ef...
SVC used as a voltage stabilization
• SVC is the preferred tool for dynamic reactive power support in high
voltage transmi...
Basic SVC schemes
• Thyristor controlled reactor and fixed capacitor,
TCR/FC TCR/FCs are characterized by
– Continuous con...
The Benefits Of SVC To Power
Transmission
• Stabilized voltages in weak systems
• Reduced transmission losses
• Increased ...
Series connected controllers
Combined shunt and series connected
controllers (hybrid)
Device Capabilities
Device capabilities SVC STATCOM TCSC SSSC TCPST UPFC
Transmission Capacity Small Small Strong Strong S...
Conclusion
• The above discussion reflects various work and philophies are
covered in the area of FACTS. The potential rol...
Reference
[1] BOOK POWER GENERATION ENGINEERING. AUTHOR R.P AJWALIA
(ATUL PARAKASHAN)
[2] A. L’ABBATE, G. MIGLIAVACCA, U. ...
Thank You
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Facts devices power electronics

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Facts devices power electronics

  1. 1. Flexible AC Transmission Systems (FACTS) Nawazish Ali 12063122-047
  2. 2. Outline • Overview Of The Transmission Planning Process • Role Of Power Electronics Device In Power System • Introduction Of FACTS • Benefits Of FACTS Technology • Types Of FACTS Controllers • Recants uses FACTS devices • Conclusion • References
  3. 3. Overview Of The Transmission Planning Process • Is A Very Complex Process And Recent Trends And Challenges Make It Even More Complicated In the past, before the electricity market liberalization. • Its aim to minimize the generation costs. • minimizing transmission costs (investment and operation). • Use of static and dynamic technical constraints.
  4. 4. Role Of Power Electronics Device In Power System • Switching operation because Availability Of High Power Semiconductor Devices • Decentralized Renewable Energy Generation Sources • Increased Power Transfer With Existing Transmission System • Effective Control Of Power Flow Needed In A Deregulated Environment • Norms For Power Quality
  5. 5. Introduction On FACTS • Flexible AC Transmission Systems (FACTS) are the name given to the application of power electronics devices to control the power flows and other quantities in power systems. • “Alternating current transmission systems incorporating power electronic based and other static controllers to enhance controllability and increase power transfer capability.” • The design of the different schemes and configurations of FACTS devices is based on the combination of traditional power system components (such as transformers, reactors, switches, and capacitors) with power electronics elements (such as various types of transistors and thyristors)
  6. 6. Benefits of FACTS • To increase the power transfer capability of transmission networks. • To provide direct control of power flow over designated transmission routes. • Control of power flow as ordered so that it follows on the prescribed transmission corridors. • Increase the loading capability of lines to their thermal capabilities
  7. 7. FACTS CONTROLLERS SHUNT • Static Var Compensator • Static Synchronous Compensator • STATCOM SERIES •Thyristor Controlled Series Compensator (TCSC) •Static Synchronous Series Compensator •Fault Current Limiter (SC+FPD) HYBRID •Dynamic Power Flow Controller (DFC) •HVDC Light/HVDCLightB2B/UPFC
  8. 8. Shunt connected controllers
  9. 9. Static Var Compensator • The SVC is an excellent tool for achieving dynamic voltage control of power systems. Increased efficiency in power systems • The global trend is towards ever larger power networks, longer transmission lines, and higher consumption. Energy is also becoming increasingly expensive. To cope, power transmission and distribution systems have to become more efficient. It has increasing power transmission and distribution capacity at a lower cost.
  10. 10. SVC used as a voltage stabilization • SVC is the preferred tool for dynamic reactive power support in high voltage transmission grids. it will counteract the often hazardous voltage depressions that follow in conjunction with faults in the grid. These highly dynamic events, where the ever increasing use of induction motors (like those in air-conditioning units and wind power turbine-generators) stresses the grid, will need an SVC to maintain the grid voltage and safeguard the fault ride-through capability. • Static var compensator includes the following major components 1. Control system 2. Thyristor valves 3. Capacitor banks 4. reactors
  11. 11. Basic SVC schemes • Thyristor controlled reactor and fixed capacitor, TCR/FC TCR/FCs are characterized by – Continuous control – No transients – Elimination of harmonics by tuning the FCs as filters – Compact design • Thyristor switched capacitor, TSC TSCs are characterized by – Stepped control – No transients – No harmonics – Low losses – Redundancy and flexibility
  12. 12. The Benefits Of SVC To Power Transmission • Stabilized voltages in weak systems • Reduced transmission losses • Increased transmission capacity, to reduce, defer or eliminate the need for new lines. • Higher transient stability limit • Increased damping of minor disturbances • Greater voltage control and stability • Power oscillation damping.
  13. 13. Series connected controllers
  14. 14. Combined shunt and series connected controllers (hybrid)
  15. 15. Device Capabilities Device capabilities SVC STATCOM TCSC SSSC TCPST UPFC Transmission Capacity Small Small Strong Strong Strong Strong Power Flow Control Small Small Medium Strong Medium Strong Transient Stability Small Medium Strong Strong Medium Strong Voltage stability Strong Strong Small Small Small Strong Power Oscillation Damping Medium Medium Medium Medium Medium Strong Control of Wind Farm Reactive Power O/p Yes Yes No No No Yes Investment Cost Small Medium Small Medium Medium Strong
  16. 16. Conclusion • The above discussion reflects various work and philophies are covered in the area of FACTS. The potential role that FACT may play towards the development of the future Indian transmission system. In fact, FACT elements may provide Indian TSOs with effective solutions to the several criticalities they encounter. Finally, it has to be noted that in a highly meshed network, as the Indian FACTS become extensively deployed, they will deliver real benefits only when subjected to a coordinated and hierarchical control.
  17. 17. Reference [1] BOOK POWER GENERATION ENGINEERING. AUTHOR R.P AJWALIA (ATUL PARAKASHAN) [2] A. L’ABBATE, G. MIGLIAVACCA, U. HÄGER X, C. REHTANZ X ERSE (ENEA - RICERCA SUL SISTEMA ELETTRICO) [FORMER CESI RICERCA] SPA, MILAN, ITALY TECHNICAL UNIVERSITY OF DORTMUND, DORTMUND, GERMANY [3] EUROPEAN TRANSMISSION SYSTEM [4] V. KAKKAR, HEAD OF DEPTT (EEE), AND N. K. AGARWAL, ASSIST. PROF. (EEE) VITS GHAZIABAD. [5] L. GYUGYI, N.G. HINGORANI, “UNDERSTANDING FACTS,” IEEE PRESS, 1ST EDITION, DECEMBER 1999. [6] M.H. RASHID, “POWER ELECTRONICS,” PRENTICE HALL, 3RD EDITION, 2004.
  18. 18. Thank You

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