Instructor by : Drs. Ir. Hasan Surya, MT.

DESCRIPTION

Medium voltage (2.4 kV – 34.5 kV) electrical distribution, substation, and utilization equipment found in industry. Electrical system protection is covered in detail including: fuse selection, protective relay applications for medium voltage motors and radial feeders, protective relay programming, and system coordination considerations. The course is idea for individuals who are installing new, programmable electronic protective relays. There is also a strong emphasis on safety, electrical preventive maintenance testing, and preventive maintenance procedures that will reduce costly plant downtime. 

PARTICIPANTS

Apprentice Electricians, Journeyman Electricians, Maintenance Technicians, Plant Engineers, Supervisors, and Inspectors. 

COURSE OUTLINE

1. Introduction To Power Distribution Systems

A Description of an Electric Power Distribution System, its Function, Topology and Main Components

• The Electric Power System
• Distribution Systems
• Function of a Distribution System
• Types of Distribution Networks
• Secondary Distribution Substations

2. Loads and Load Characteristics in Power Distribution Systems
A Description and Derivation of the Loads in the Electric Power System and how they are used for Purposes of Planning and Design

• Basic Definitions
• Load Characteristics
• Load Growth
• Load Estimating and Forecasting

3. The Analysis of Power Distribution Systems

Basic Principles and Procedures for Planning and Design through Analysis

• Distribution System Planning Process
• Basic Equation for Analysis
• Voltage Drop Calculations
• Power Factor Correction
• Voltage regulation in Transformers
• Short Circuit Calculations
• Induction Motor Starting
• Voltage Fluctuation

4. Harmonics as a Source of Power Quality Problems
An introduction to Harmonic Effects on power quality in a distribution system and how they can be mitigated.

• Harmonic Quantities
• Sources of Harmonics
• Effects of Harmonics
• Harmonics Limits
• Mitigation Measures
• Design of Passive Harmonic Filters

5. Power Transformers

Power transformers as major item of plant, their sizing and specification

• Sizing and Cooling
• Winding Connection, Phase Rotation, Phase Shift and Connection Diagrams
• Vector Group Symbols
• Paralleling of Transformers
• Neutral Farthing Methods
• Tap-Change Operation and Tap-range Calculations

6. Switching Devices

Switching Devices for the control of power flow and their selection and ratings

• Circuit Breakers
• Switching Characteristics
• Disconnecting Switches
• Contactors
• Gas-Insulated Switchgear

7. Electric Cables

Cable Construction, their use and Performance

• Main Features and Classification
• Cable Conductors
• Insulation
• Screens
• Metallic Sheath and Armoring
• Outer Sheath Covering
• Causes of Cable failures
• Cable Installation
• Steady State Performance
• Short Circuit Ratings
• Short Circuit Forces

8. Protection, Instrumentation, Metering and Control

Mitigating the effects of Short-Circuits and methods of reducing short circuit magnitude. The Causes of Short-Circuits in Equipment and the Provision of Protection Selection of Protective Equipment, Metering and Control

• Voltage Transformers and Current Transformers
• Protective Relays
• Interlocks
• DC System

9. Substation Earthing
General Description and Design of Substation Earths

• The Driven Rod and Buried Conductor
• Shock Criteria and Shock Circuits
• Earth Grid Design, Step, Touch and Transfer Voltages 

PARTICIPANTS

Electrical technicians and operators

TRAINING METHOD