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NPTEL Syllabus Power Electronics Applications to Power Systems - Video course COURSE OUTLINE  Part I: Load Balancing: Introduction-br ief di scussions on Transmission l ine theory, use of Voltage source inverter (VSI) for reactive power support, mid-point series and shunt compensation and HVDC. Discussion on voltage profile at the point of common coupling (PCC), need for load compensation, load balancing using passive elements. Limitations of l oad balancing usi ng passive el ements, Use of VSI as a V ar generator, Indirect current controlled synchronous link converter Var Compensator (SLCVC). Var ious PWM techniqu es: Harmonic Elimination and space vector PWM techniques - Theory and implementation issues. Discussion on bi-directional power flow in VSI, Use of VSI as active filter cum Var generator , Current controlled SLCVC, Strategy-1: Sensing the compensator current, Strategy-2: Sensing the source current, Use of two VSIs, one as Var generator and another as active fil ter. Limitations of 2-level VSI, Di scussion on the need for the change in power circui t configuration of 2-level VSI for high power application, introduction to multi-level inverters. Principle of operation of 3-level and 4-level diode clamped multi-level inverters. Space vector representation of 3-level VSI, voltage control of 3-level inverter. Instantaneous reactive power theory, expression for active and reactive powers in terms of d-q components. Reactive power compensator using instantaneous reactive power theory , stationary to rotating frame transform ation. Reference  wave generation (hardware method) , harmonic oscill ator , Phase locked loop (PLL) Introduction on one cycle control, discussion on one cycle controlled Var generator and active filter. Part II: S h un t Compens ati on: Introduction, methods of Var generation: Thyristor controlled reactor (TCR), Thyristor switched capacitor (TSC), Fixed capacitor- Thyristor cont rolled reactor (FC-TCR), STATCOM. Part III: Series Compensation: Introduction, comparison between series and shunt compensation. Various Equipment: GTO Controlled Series Capacitor (GCSC), Comparison of TCR and GCSC, Thyristor Switched Series Capacitor (TSSC), Thyristor Controlled Series Capacitor (TCSC). Static Synchronous Series Compensator (SSSC), modes of operation, Voltage regulator and Phase Angle Regulator (PAR). Mu l ti func tional FACTS contr oller: Unified Power Flow Contr oller (UPFC), control capabili ties of UPFC, 2-port repr esentation of UPFC. Part IV: HVDC: Introduction, various possible HVDC configurations, unipolar and bipolar links, components of HVDC system: Converter, transformer, smoothing reactor, harmonic filter. Reactive power support, operation of 6-pulse controlled rectifier in i nverting mode of operation. Effect of source inductance, equivalent circuit representat ion of 6-pulse converter considering effect of source inductance. Operat ion of 12- pul se converter. Control of HVDC system, Rectifier and i nverter character istics, mode stabilizati on, c urrent control, voltage dependent current order limit, combined NPTEL http://nptel.iitm.ac.in Electrical Engineering  Pre-requisites: 1. Course on Power Electronics (including operation of 3 p hase AC-DC conversion, limitations of li ne commutated converter , DC-AC converter, Voltage contr ol of VSI). 2. Basic course on Control theor y. 3. First course on Power Syste ms ( Transmission line theory). Coordinators: Prof. B.G. Fernandes Department of Electrical EngineeringIIT Bombay

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Page 1: 108101003

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NPTEL Syllabus

Power Electronics Applications to PowerSystems - Video course

COURSE OUTLINE 

Part I:Load Balancing: Introduction-brief discussions on Transmission l ine theory,use of Voltage source inverter (VSI) for reactive power support, mid-point seriesand shunt compensation and HVDC.

Discussion on voltage profile at the point of common coupling (PCC), need forload compensation, load balancing using passive elements.

Limitations of load balancing using passive elements, Use of VSI as a Vargenerator, Indirect current controlled synchronous link converter VarCompensator (SLCVC).

Var ious PWM techniques: Harmonic Elimination and space vector PWMtechniques - Theory and implementation issues.

Discussion on bi-directional power flow in VSI, Use of VSI as active filter cumVar generator, Current controlled SLCVC, Strategy-1: Sensing the compensatorcurrent, Strategy-2: Sensing the source current, Use of two VSIs, one as Vargenerator and another as active fil ter.

Limitations of 2-level VSI, Discussion on the need for the change in power circuitconfiguration of 2-level VSI for high power application, introduction to multi-levelinverters. Principle of operation of 3-level and 4-level diode clamped multi-levelinverters. Space vector representation of 3-level VSI, voltage control of 3-levelinverter.

Instantaneous reactive power theory, expression for active and reactive powersin terms of d-q components. Reactive power compensator using instantaneousreactive power theory, stationary to rotating frame transformation. Reference  wave generation (hardware method), harmonic oscillator, Phase locked loop(PLL) Introduction on one cycle control, discussion on one cycle controlled Vargenerator and active filter.

Part II:Shunt Compensation: Introduction, methods of Var generation: Thyristorcontrolled reactor (TCR), Thyristor switched capacitor (TSC), Fixed capacitor-Thyristor controlled reactor (FC-TCR), STATCOM.

Part III:

Series Compensation: Introduction, comparison between series and shuntcompensation. Various Equipment: GTO Controlled Series Capacitor (GCSC),Comparison of TCR and GCSC, Thyristor Switched Series Capacitor (TSSC),Thyristor Controlled Series Capacitor (TCSC). Static Synchronous SeriesCompensator (SSSC), modes of operation, Voltage regulator and Phase AngleRegulator (PAR).

Mu l ti functional FACTS controller: Unified Power Flow Controller (UPFC),control capabilities of UPFC, 2-port representation of UPFC.

Part IV:HVDC: Introduction, various possible HVDC configurations, unipolar and bipolarlinks, components of HVDC system: Converter, transformer, smoothing reactor,harmonic filter. Reactive power support, operation of 6-pulse controlled rectifier

in inverting mode of operation. Effect of source inductance, equivalent circuitrepresentation of 6-pulse converter considering effect of source inductance.Operation of 12- pulse converter.

Control of HVDC system, Rectifier and inverter characteristics, modestabilization, current control, voltage dependent current order limit, combined

NPTELhttp://nptel.iitm.ac.in

ElectricalEngineering

 

Pre-requisites:

1. Course on Power Electronics(including operation of 3 phaseAC-DC conversion, limitationsof line commutated converter,DC-AC converter, Voltage controlof VSI).

2. Basic course on Control theory.

3. First course on Power Systems (

Transmission line theory).

Coordinators:

Prof. B.G. FernandesDepartment of ElectricalEngineeringIIT Bombay

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rectifier-inverter characteristics, valve blocking and by-passing, limitationsHVDC system using line commutated converters, modern HVDC system -HVDC light. 

References:

1. T. J. E. Miller “Reactive power control in Electrical system,” John Wiley &

Sons, New York, 1982.

2. K. R. Padiyar “FACTS CONTROLLERS in Power Transmission &Distribution,” New Age International (P) Ltd.,” 2007.

3. K. R. Padiyar “HVDC POWER TRANSMISSION SYSTEMS Technologyand System Interactions,” New Age International (P) Ltd.,” 1990.

4. Hingorani N. G “Understanding FACTS Concepts & Technology ofFACTS Systems,” IEEE PRESS, 2000.

A joint venture by IISc and IITs, funded by MHRD, Govt of India http://nptel.iitm.ac.in