Unit 1 Electrical Traction Supply System

10 lecture hours

• Contents:  Current scenario of Electrification of Railway lines in India  Single line diagram of traction substation / traction power supply  Overhead equipment (OHE):Catenary and contact wire
• supply control post
• isolator and pantograph
• neutral section
• NETRA Car, Two conductor supply to electrical locomotive  Types of Auxiliary supply (Lighting, Fan, AC etc.): self- generating system
• Mid-on generation and End-on generation system  Train lighting supply: Brushless alternator (onlyprinciple)
• rectifier cum regulator and battery  Traction powering: Distributed power
• Concentrated power and Loco hauled
• Key features of distributed power
• compare distributed power and concentrated power  Lighting system: Advantages of 110 V DC over 24 V DC system (334) Locomotive  Classification of electrical locomotives  Electric supply to Locomotive: Pantograph
• ARNO converter and Static converter
• Hotel load converter (HLC)  Dynamic
• Rheostatic and Regenerative braking to Locomotive  Distributed power wireless control system (DPWCS)
• needs for distributed power system  Block diagram of locomotive power circuit  Three phase AC Locomotive  Effect of speed on specific energy consumption

Unit 2 Applications of Electric Furnace

• Contents  Application of Electric Arc furnace in steel industries  Steel industry scenario in India: Production
• Import and Export (2024-25)  Methods of Steel production process  Construction of Electric arc furnace (EAF) 8 18% GUJARAT TECHNOLOGICAL UNIVERSITY Program Name: Diploma Engineering Level: Diploma Branch: Electrical Engineering / Renewable Energy Subject Code: DI04000181 Subject Name: Utilization of Electrical Power w.e.f. 2025-26 http://syllabus.gtu.ac.in/ Page 3 of 7  Operation of EAF: Charging
• Complete meltdown
• oxidation and refining
• de-oxidation and tapping of liquid steel  Terminology: Capacity utilization
• yield and specific energy consumption
• Energy balance  Energy efficient EAF technologies: Ultra high-power transformer
• high impedance operation
• aluminum electrode arm, improve regulation control
• oxy fuel burners
• Mist cooling of electrodes
• water cooled cables
• Estimation of saving and payback period of all energy efficient methods Induction furnace  Construction and working of induction furnace

Unit 3 Electrostatics & Electroplating Applications

8 lecture hours

• Contents:  Application of electrostatics in electrostatic paint  Charged particles: Positive charge
• Negative charge and neutral particles  What is electrostatic paint?Working of electrostatic paint  Electrostatic charging methods: Corona charging
• contact charging Induction charging and frictional charging  Faraday cage effect
• Wraparound effect
• High voltage power supply
• Electrostatic accessories
• Importance of resistivity of coating material Electroplating  Industrial applications of electroplating  Principle of electroplating  Materials used in electroplating

Unit 4 Street Lighting

•  Components of street lighting system: lamp
• ballast and luminaries  Performance parameter: total luminous flux
• luminous intensity
• luminous efficacy
• chromaticity coordinates
• correlated colour temperature
• colour rendering index
• relation between lumen and lux  Laws of illumination Street light design  Street light pole arrangement by lumen-based method
• pole height as compare wattage of lamp
• pole spacing optimization
• Distance between two poles by approximation method &actual method
• Estimate watt rating of street light luminaries 10 22% GUJARAT TECHNOLOGICAL UNIVERSITY Program Name: Diploma Engineering Level: Diploma Branch: Electrical Engineering / Renewable Energy Subject Code: DI04000181 Subject Name: Utilization of Electrical Power w.e.f. 2025-26 http://syllabus.gtu.ac.in/ Page 4 of 7 Illumination measurement  Estimation of illuminance measurement: correction factor for lux meter
• determination of illumination points in area
• room index
• average illuminance
• installed load efficacy
• total power of light sources in area
• estimate target installed load efficacy
• reasons for Installed load efficacy ratio (ILER)
• steps to provide energy efficacy
• case study

Unit 5 Applications of Regenerative Braking

3 lecture hours

•  Regenerative braking in electric cars
• electrical train / metros
• E bicycle/ E scooter
• electric buses  Case study of energy saving by applying braking in electric car on flat surface and descent considering 50% and 75% efficiency  Case study of energy saving by number of stops in electric train considering 50% and 75% efficiency  Compare energy saving in both cases

Unit 6 Reactive Power Compensation

6 lecture hours

•  Concept of reactive power
• causes of low power factor
• advantages of reactive power management by capacitor  Centralized compensation
• individual and group compensation  Capacitor rating for power factor improvement by using standard table and formula  Case study on Effect of power factor on three phase line current and copper losses  Capacitor rating for star and delta connection for power factor improvement  Case study on Effect of power factor on cable size and energy saving