JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Prerequisites

Power Electronics, Power Systems

Course Objectives:

• To understand the fundamentals of FACTS Controllers,
• To know the importance of controllable parameters and types of FACTS controllers & their benefits
• To study HVDC Transmission system
• To understand the control aspects of HVDC System

Course Outcomes

Upon the completion of the course the student will be able to

• Choose proper FACTS controller for the specific application based on system requirements
• Analyze the control circuits of Shunt Controllers, Series controllers & Combined controllers for various functions viz. Transient stability Enhancement, voltage instability prevention and power oscillation damping
• Compare EHV AC and HVDC system and to describe various types of DC links
• Describe various methods for the control of HVDC systems and to perform power flow analysis in AC/DC systems

UNIT - I

Facts concepts: Reactive power control in electrical power transmission, principles of conventional reactive power compensators. Introduction to FACTS, flow of power in AC parallel paths, meshed systems, basic types of FACTS controllers, definitions of FACTS controllers, brief description of FACTS controllers.

UNIT - II

Static shunt and series compensators: Shunt compensation - objectives of shunt compensation, methods of controllable VAR generation, static VAR compensators - SVC, STATCOM, SVC and STATCOM comparison. Series compensation - objectives of series compensation, thyristor switched series capacitors (TCSC), static series synchronous compensator (SSSC), power angle characteristics, and basic operating control schemes.

UNIT - III

Combined compensators: Unified power flow controller (UPFC) - Introduction, operating principle, independent real and reactive power flow controller and control structure. Interline power flow controller (IPFC), Introduction to Active power filtering, Concepts relating to Reactive power compensation and harmonic current compensation using Active power filters.

UNIT - IV

HVDC transmission: HVDC Transmission system: Introduction, comparison of AC and DC systems, applications of DC transmission, types of DClinks, Layout of HVDC Converter station and various equipments. HVDC Converters, analysis of bridge converters with and without overlap, inverter operation, equivalent circuit representation of rectifier and inverter configurations

UNIT - V

Control of HVDC system: Principles of control, desired features of control, converter control characteristics, power reversal, Ignition angle control, current and extinction angle control. Harmonics- introduction, generation, ac filters and dc filters. Introduction to multiterminal DC systems and applications, comparison of series and parallel MTDC systems, Voltage Source Converter based HVDC systems

TEXT BOOKS:

• 1. Hingorani ,L.Gyugyi, ‘Concepts and Technology of Flexible AC Transmission System’, IEEE Press New York, 2000 ISBN –078033 4588.
• 2. Padiyar, K.R., ‘HVDC transmission systems’, Wiley Eastern Ltd., 2010.

REFERENCES:

• 1. Song, Y.H. and Allan T. Johns, ‘Flexible AC Transmission Systems (FACTS)’, Institution of Electrical Engineers Press, London, 1999.
• 2. Mohan Mathur R. and Rajiv K.Varma , ‘Thyristor - based FACTS controllers for Electrical
• 3. Transmission systems’, IEEE press, Wiley Inter science , 2002.
• 4. Padiyar K.R., ‘FACTS controllers for Transmission and Distribution systems’ New Age International Publishers, 1st Edition, 2007.
• 5. Enrique Acha, Claudio R.Fuerte-Esqivel, Hugo Ambriz-Perez, Cesar Angeles-Camacho ‘FACTS –Modeling and simulation in Power Networks’ John Wiley & Sons, 2002.
• 6. Jos Arrillaga, ‘High voltage Direct Current Transmission’ IET Power and Energy Series 29 M. Tech – I Year – II Sem. (PE/PEED/PID)