PS4203 Power System Transients Syllabus:
PS4203 Power System Transients Syllabus – Anna University PG Syllabus Regulation 2021
COURSEOBJECTIVES:
To gain knowledge in sources of transients like lightning, switching and temporary overvoltages.
To model power system components and estimate the overvoltages in power system
To analyze travelling wave phenomena against different overvoltages
To compute transient overvoltages using Electromagnetic Transient Program (EMTP).
To coordinate the insulation of power system and protective devices.
UNIT I LIGHTNING OVERVOLTAGES
Classification of over voltages- Mechanism and parameters of lightning flash, protective shadow, striking distance, electro geometric model for lightning strike, Grounding for protection against lightning – Steady state and dynamic tower-footing resistance, substation grounding Grid, Direct lightning strokes to overhead lines, without and with shield Wires
UNIT II SWITCHING AND TEMPORARY OVERVOLTAGES
Switching transients – concept – phenomenon – system performance under switching surges- Ferranti Effect, Temporary overvoltages – load rejection – line faults – ferroresonance, VFTO
UNIT III TRAVELLING WAVES ON TRANSMISSION LINE
Circuits and distributed constants, wave equation, reflection and refraction – behaviour of travelling waves at the line terminations – Lattice Diagrams – attenuation and distortion – multiconductor system and multivelocity waves
UNIT IV INSULATION CO-ORDINATION
Insulation co-ordination –volt –time characteristics , Insulation strength and their selection Evaluation of insulation strength standard BILs-Characteristics of protective devices, applications, location of arresters – insulation co-ordination in AIS and GIS
UNIT V COMPUTATION OF POWER SYSTEM TRANSIENTS
Computation of transients using electromagnetic transient program-Modelling of power system components- Simple case studies – Application of simplified method: single line station, two line station, gas insulated substations, comparison with IEEE and IEC guides
TOTAL : 45 PERIODS
COURSE OUTCOMES:
CO1: Ability to analyse various sources of transients
CO2: Ability to compute possible overvoltages in power systems
CO3: Ability to predict overvoltages in power system using travelling wave theory
CO4: Ability to compute overvoltages using EMTP with multiple sources
CO5: Ability to coordinate the insulation level of the power system
REFERENCES
1. Pritindra Chowdhari, “Electromagnetic transients in Power System”, John Wiley and Sons Inc., Second Edition, 2009.
2. Allan Greenwood, “Electrical Transients in Power System”, Wiley & Sons Inc. New York, 2012.
3. Andrew R. Hileman, “Insulation Coordination for Power Systems”, CRC press, Taylor & Francis Group, New York, 1999.
4. Klaus Ragaller, “Surges in High Voltage Networks”, Plenum Press, New York, 1980.
5. Rakosh Das Begamudre, “Extra High Voltage AC Transmission Engineering”, (Second edition) Newage International (P) Ltd., New Delhi, 2006.
6. Naidu M S and Kamaraju V, “High Voltage Engineering”, Tata McGraw-Hill Publishing Company Ltd., New Delhi, 2004.
7. IEEE Guide for safety in AC substation grounding IEEE Standard 80-2000.
8. Working Group 33/13-09 (1988), ‘Very fast transient phenomena associated with Gas Insulated System’, CIGRE, 33-13, pp. 1-20.
9. R. Ramanujam, “Computational Electromagnetic Transients: Modeling, Solution Methods and Simulation”, I.K. International Publishing House Pvt. Ltd, New Delhi -110 016, 2014