This training course is designed for utility, plant, or consulting engineers and technicians involved in the protection of transmission, distribution, or generation facilities. If you are beginning a career or assignment in these areas, this training course will be of value to you. Those designing protection schemes, or coordinating and setting overcurrent relays and fuses will especially benefit from this course. Topics will begin at the fundamental level and move to more advanced content as the training course progresses.
Prerequisites include a basic understanding of vector algebra and a familiarity with the voltage, current, watt, var, and phase angle measurement terms used in three-phase power systems. Knowledge of symmetrical components and sequence networks is also beneficial.
This training course is suitable to a wide range of professionals but will greatly benefit:
Engineers and technicians new to the power industry
Intermediate-level engineers and technicians responsible for power system protection
Professionals involved with developing protection schemes to improve reliability
Facility engineers and consultants who conduct protection studies
Engineers tasked with assessing the effectiveness of protection schemes
Duration
5 Days
Programme Overview
This training course in Dubai covers the fundamentals of protecting a power system against hazards posed by abnormal system conditions, such as short-circuit faults. An overview of the protective devices available for application, both industrial and utility, is presented along with typical means of implementing these devices. Both electromechanical and digital relays are discussed. Fuse selection and coordination is explored in depth. Utility-specific protective devices, such as reclosers and sectionalizers, are presented, and utility-specific protection strategies, such as fuse-saving and fuse-blowing, are covered. Workshops allow the delegates to apply techniques learned in the training course to realistic protection scenarios.
This training course will feature:
Philosophy of protective relaying and protection strategies
Electromechanical relay operating principles and microprocessor implementations
Radial system protection – time-coordinated overcurrent protection
Instrument transformers
Differential and distance relays, including pilot protection
Objectives
By the end of this training course, participants will be able to:
Comprehend protective relaying philosophies and choose appropriate protection strategies
Understand how electromechanical relays work and how they are emulated by microprocessors
Design a properly-coordinated overcurrent protection system for a radial distribution system
Properly specify instrument transformers for protection applications
Design protection schemes utilizing differential and distance relays, including pilot protection
Methodology
This training course will utilize a variety of proven adult learning techniques to ensure maximum understanding, comprehension, and retention of the information presented. These methods include workshops where attendees practice solving problems (bring a scientific calculator), case studies where concepts covered are applied to real-world situations, and simulations and animations to visually illustrate what would otherwise be abstract concepts in a novel and intuitive manner.
Course Outline
Day One: Introduction, Math Review, Symmetrical Components, and Sequence Networks
Protection introduction
Phasor math
Per-unit calculations
Symmetrical components
Sequence networks
Fault modelling
Day Two: Electromechanical and Digital Relays, Relay Schemes for Radial Systems, Time-Coordinated Overcurrent Protection
Electromechanical relay operating principles
Microprocessor-based relay implementation
Instantaneous and time overcurrent relays
Reclosers and sectionalizers
Time-current curves
Device coordination
Day Three: Relay Schemes for Networked Systems and Device Protection
Distance relays
Distance relays with pilot protection
Differential relays
Differential relays for bus protection
Differential relays for generator protection
Differential relays for transformer protection
Day Four: Effect of Protection on Reliability
Reliability indices
Fault clearing time and reclosing
Effects of nearby faults
Fuse saving strategy
Fuse blowing strategy
Intelligent protective devices
Day Five: Arc Flash Hazard and a Look to the Future
Shock hazard versus burn/blast hazard
IEEE 1584 and NFPA 70E
Personal protective equipment
Hazard labelling
A look to the future: communication-based overcurrent protection
