An electrical distribution system is a series of electrical circuits that delivers power in the proper proportion to homes, commercial businesses and industrial facilities. In order to transfer electrical power from an alternating current (AC) or a direct current (DC) source to the place where it will be used, some type of distribution network must be utilized. It generally consists of transformers, feeders, distributors and service mains.
This course is designed to help students to understand the fundamentals of power distribution system including transformers and cable accessories.
After completing this course, students will have expert knowledge on the power distribution systems design and also energy losses in distribution systems.
WHO WILL BENEFIT FROM THIS COURSE?
- Electrical Engineers
- Facility & Operations Managers
- Technical Specialist
- Instrumentation Engineers
- Plant Engineers
- Project Engineers & Managers
- Engineering Consultants
- Architects
COURSE OUTLINE
ROLE OF ELECTRICITY
- Historical overview
- Major steps in Electrical production and use
- Power system
SINGLE-PHASE AND 3-PHASE AC SYSTEMS
- AC waveform
- Single phase generator
- 3 phase generator
- Single and 3 phase AC supply
ELECTRICAL POWER CALCULATION IN SINGLE AND 3-PHASE CIRCUITS
- Electrical power and energy
- Single phase AC power
- Power in an AC circuits
- Three phase system loads
- Three phase circuit relationship
TRANSIENTS AND HARMONICS
- Problem of low factor
- Power factor correction
- Power quality
- Harmonics
PRINCIPLES OF DISTRIBUTION
- Distribution system components
- Main equipment types
- Distribution voltage options
- Large motors at main distribution level
TYPES OF DISTRIBUTION
- Radial
- Radial with redundancy
- Looped or ring type
- Mesh connections
POWER DISTRIBUTION FUNDAMENTALS
- Typical characteristics of mining power distribution
- Equipment ratings/sizing
- Needs for system planning
- Fault current calculation
PRINCIPLES OF TRANSFORMERS
- Electricity and magnetic terms
- Transformer principle
- E.M.F Equation
TRANSFORMER PARTS
- Transformer Core
- Transformer windings
- Winding Insulation
- Cooling Medium
- Transformer tank/enclosures
TRANSFORMER TAP CHANGER
- On-load tap changer
- Off-load tap changer
- In-tank tap changer
- Buchholz relay
- Other accessories
- Mining transformers
CABLE AND ITS COMPONENTS
- What is cable
- Conductor
- Insulation
- Inner sheath
- Mechanical protection
- Outer sheath
CABLE SELECTION AND SIZING CRITERIA
- Application
- Load current
- Derating factors
- Voltage drop
- Fault current withstanding
POWER CABLES FOR MINING
- Cable cross section
- Mining cable specification
- Common cable failure modes
- Controls to minimize risks
CABLE ACCESSORIES
- Splicing
- Termination
- Cable run supports
- T junctions
SYSTEM EARTHING
- Earthing types and objectives
- Types of system earthing
- Commonly adapted
ELECTRIC SHOCK
- Electric shock current threshold
- Protective earthing and touch voltage
- Classification of supply voltage
GENERATION OF STATIC ELECTRICITY
- Static charge buildup
- Voltage buildup
- Breakdown voltage
- Method of controlling static electricity
LIGHTNING
- Electrical effects
- Thermal and mechanical effects
- Lightning protection of building
- Lightning and mines
SURGE PROTECTION
- Surge protection of electrical equipment
- Surge protection zones
- Surge protection approach
- Equipotential bonding
EARTH ELECTRODES
- Choice of earth electrode
- Soil resistance
- Resistance of single rod electrode
POWER SUPPLY OPTION FOR MINING
- Mining power
- Power supply option
- Diesel power plant
ENGINE PROCESSES
- Internal combustion engines
- Multiple cylinder-benefit
- Multiple cylinder-downside
IGNITION PROCESSES
- Fuels used in engine
- Speed classifications
- Application based classifications
- Service classifications
ENGINE PARAMETER
- Basic mean effective pressure
- Engine efficiency
- Specific fuel consumption
- Ambient condition
ENGINE CONFIGURATIONS
- Turbocharger
- ISO standards
- Performance enhancement
- Typical operation procedures
DG SET CONTROL SYSTEM
- Panel components
- DG set synchronization
- Load sharing among unequal sets
- DG set package components
- DG set package planning
