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London - UK ,
11 - Dec - 2023
5 - Day
Efficient and Safe Power Protection systems are vital to ensure no overload may occur and a smooth current is maintained at the level determined for the demand required. Safety systems also demand the highest standards of operations and maintenance, and therefore Relay Protection Systems play a large part in the Electrical Power Process. The protection system’s main function is to clear faults from the power system in high speed to enhance people’s safety, minimize equipment damage, and maintain power system stability. Protection of power systems requires understanding system faults and their detection and the safe isolation of the faulted device from the system.
This Advanced Microprocessor-Based Power System Protection course is designed to inform participants how Power systems operate & and safely maintain protection Systems. The workshop features an introduction covering the need for protection, fault types, and their effects, simple calculations of short circuit currents, and system earthing.
Upon completion of the Advanced Microprocessor-Based Power System Protection course, the participant will gain good knowledge about the following topics:
- Understand the electrical characteristics of various electrical faults.
- Understanding of electrical fault protection systems.
- Identify different types of protection systems and understand the purpose of each type.
- Recognize modern protective relays and understand their basic operation.
- Appreciate voltage and current transformers’ characteristics and importance in achieving dependable and accurate electrical protection systems.
- Understand the concept of protection system discrimination and appreciate its importance in improving the security of supply.
- Be familiar with the requirements for testing protection systems.
- Become familiar with the application of essential connections and internal schematics.
- Ability to test several Relays (Electromagnetic & Solid State), including type 50 / 51, type 27 / 59
- Understand practical solutions for specifying and operating protection systems.
- Comprehensive understanding of principles and selection of protection relays and protection schemes.
- Some demonstrations for short circuit & relay coordination using ETAP 7.5 Power station.
The Advanced Microprocessor-Based Power System Protection course is aimed at Managers, Engineers, and Technicians responsible for the distribution equipment operation and maintenance who will benefit from sharing experiences in planning, organization, and implementation of maintenance activities.
The latest educational methods and strategies are employed. The course is designed to not only give the required fundamental knowledge but also to provide a strong background for all attendees towards practical industrial applications. The course will be highly interactive, with opportunities to advance your opinions and ideas. Participation is encouraged in a supportive environment. To ensure the concepts introduced during the course are understood, they will be reinforced through a mix of learning methods, including lecture-style presentations, open discussion, case studies, simulations, and group work.
Pre & Post course assessments will be used to measure the effectiveness of this training.
Module 1 - AC Breaking & Fundamentals of Short circuit
- Causes of Faults
- Sources of short-circuit Currents
- Fundamentals of Short-Circuit Currents
- Three-Phase Short Circuits
- The usefulness of Fault Calculation in the Study of Power System
- Symmetrical Fault Currents
- Asymmetrical Fault Currents
- Types of Faults/Magnitudes
- Symmetrical Components
- Importance and construction of sequence networks
- Calculation of asymmetrical faults using symmetrical components and MVA methods
- Overview of PU systems & international standards
Module 2 - Switchgear Overviews
- Purpose of circuit breakers (switchgear)
- Switch board layout
- Breaking & Making Capacities
- Switchgears types & function
- Switchgear Components
- Types of MV switchgear
- Circuit breaker
- CB behavior under fault conditions
- Insulation methods
- Oil circuit breakers
- Air break switchgear
- Sulphur-hexafluoride (SF6)
- GIS switchgear
- Vacuum breakers
- Comparison of insulating methods for CBs
Module 3 - Introduction to Protective Systems
- Relay Operation and Fundamentals
- CT & VT
- Different types of Relays (Functions, theory of operations & objectives).
- Classification of Faults and Protection Philosophy
- Relay coordination study
- Neutral earthing configurations.
- CT Hazards
- VT Hazards
- Modern protection relays/Microprocessor used with switchgear
Module 4 - Protection Schemes
- Feeder protection cable feeders and overhead lines.
- Transformer protection.
- Switchgear (busbar) protection.
- Motor protection relays.
- Generator protection.
- Recommended protection schemes of international standards
- Management of protection.
Module 5 - Co-ordinated Distribution Networks
- Methods of selectivity’s.
- Cable Damage curve.
- Motor starting curve.
- Transformer Z-curve.
- Fuse characteristics.
- LV Circuits breakers tripping curves (TM, SST, ..)
- Setting rules for coordination study.
- Principles of Protection Coordination, Discrimination, and Relay Settings.
- Generator Protection
- Transformer Protection
- Line Protection
- Cable Protection
- Motor Protection
- Overcurrent Co-ordinations. New philosophies / constrains of coordination studies.
- IEEE Standard 242.
Module 6 - Relaying Testing, Maintenance & Failure Analysis
- CT & VT testing
- Relays testing
- Maintenance intervals
- Preventive maintenance & Corrective maintenance
- Troubleshooting and repair.
- Maintenance / Acceptance Testing
- Relay Installation and Removal
- Test Plug Usage
- Primary & Secondary Test Methods.
- Maintenance of Protection Relays and Reliability
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