15EE751 FACTs and HVDC Transmission syllabus for EE

FACTS Concept and General System Considerations:

Transmission Interconnections, Flow of Power in an AC System, What Limits the Loading Capability? Power Flow and Dynamic Stability Considerations of a Transmission Interconnection, Relative Importance of Controllable Parameters, Basic Types of FACTS Controllers, Brief Description and Definitions of FACTS Controllers, Checklist of Possible Benefits from FACTS Technology, In Perspective: HVDC or FACTS.

Static Shunt Compensators:

Objectives of Shunt Compensation - Midpoint Voltage Regulation for Line Segmentation, End of Line Voltage Support to Prevent Voltage Instability, Improvement of Transient Stability. Methods of Controllable Var Generation –Thyristor controlled Reactor (TCR) and Thyristor Switched Reactor (TSR), Thyristor Switched Capacitor (TSC).Operation of Single Phase TSC – TSR. Switching Converter Type Var Generators, Basic Operating Principles, Basic Control Approaches. Static VAR Compensators: SVC and STATCOM, the Regulation Slope. Comparison between STATCOM and SVC, V –I and V –Q Characteristics, Transient stability, Response Time.

Static Series Compensators:

Objectives of Series Compensation, Concept of Series Capacitive Compensation, Voltage Stability, Improvement of Transient Stability. GTO Thyristor-Controlled Series Capacitor, Thyristor-Switched Series Capacitor, Thyristor-Controlled Series Capacitor, The Static synchronous Series Compensator, Transmitted Power Versus Transmission AngleCharacteristic.

Development of HVDC Technology:

Introduction, Advantages of HVDC Systems, HVDC System Costs, Overview and Organization of HVDC Systems, HVDC Characteristics and Economic Aspects.

Power Conversion:

3-Phase Converter, 3-Phase Full Bridge Converter, 12-Pulse Converter.

Control of HVDC Converter and System:

Converter Control for an HVDC System, Commutation Failure, HVDC Control and Design, HVDC Control Functions, Reactive Power and Voltage Stability.

Course outcomes:

At the end of the course the student will be able to:

• Discuss transmission interconnections, flow of Power in an AC System, limits of the loading capability, dynamic stability considerations of a transmission interconnection and controllable parameters.
• Explain the basic concepts, definitions of flexible ac transmission systems and benefits from FACTS technology.
• Describe shunt controllers, Static Var Compensator and Static Compensator for injecting reactive power in the transmission system in enhancing the controllability and power transfer capability.
• Describe series Controllers Thyristor-Controlled Series Capacitor (TCSC) and the Static Synchronous Series Compensator (SSSC) for control of the transmission line current.
• Explain advantages of HVDC power transmission, overview and organization of HVDC system.
• Describe the basic components of a converter, the methods for compensating the reactive power demanded by the converter.
• Explain converter control for HVDC systems, commutation failure, control functions

Graduate Attributes (As per NBA)

Engineering Knowledge, Problem Analysis, Design/ Development of Solutions, Conduct investigations of complex problems, Modern Tool Usage, Ethics, Individual and Team Work, Communication, Life-long Learning.

Question paper pattern:

• The question paper will have ten questions.
• Each full question is for 16 marks.
• There will be 2full questions (with a maximum of four sub questions in one full question) from each module.
• Each full question with sub questions will cover the contents under a module.
• Students will have to answer 5 full questions, selecting one full question from each module.

Textbooks

1 Understanding FACTS: Concepts and Technology of Flexible AC Transmission Systems Narain G Hingorani, Laszlo Gyugyi Wiley 1st Edition, 2000

2 HVDC Transmission: Power Conversion Applicationsin Power Systems Chan-Ki Kim et al Wiley 1st Edition, 2009

Reference Books

1 Thyristor Based FACTS Controllers for Electrical Transmission Systems R. Mohan Mathur, Rajiv K. Varma Wiley 1 st Edition, 2002