Course Information | ||
---|---|---|
1 | Venue | Dubai, U.A.E. |
2 | Date | 02 - 06 Feb 2020 |
3 | Download PDF | |
4 | Registration Fees | |
5 | Register | Online 800 PROMIS |
6 | Presenter |
INTRODUCTION
The continuity of Electrical Power Supply is very important to the consumers specially, for industrial sector where the curtail of electrical power supply is costly.
Electrical systems are subjected to several external & internal influences like weather conditions, lightning phenomenon, pollution, insulation failure, temperature rise, etc., these influences cause abnormal operational condition, which could lead to voltage and frequency variations and feeder trips, brown out or black out of electrical system, and sometimes, may lead to equipment damage or system failure.
Performance and characteristics of electrical system configurations are vital factor in reducing or increasing the effect of faults on the system as earthling system, switch gear, protective relays, active and reactive power generation, etc.
This course discusses electrical system faults and elements of the system that affect its behavior during the fault The cause also will suggest measures to mitigate the problems that would arise.
Many utilities need this course which studies the influences of the above mentioned events on the electrical networks and their affect on the continuity of electrical power supply and how mitigate these problems.
WORKSHOP OBJECTIVES
To know the major faults which the electrical networks encounter cause curtail of electrical supply and how to mitigate it by means of:
- Understanding the Grounding System of generation, Transmission and Distribution Networks and how it affects the electrical quantities, short circuit level and protection system.
- Understanding the causes of Voltage Deviations and its effect on auxiliaries of generators, industrial loads and the stability of Electrical Power Systems.
- Knowing the reasons of the shortage of active and reactive power in electrical networks and its effect on the electrical quantities.
- Understanding the effect of environmental conditions on the electrical equipment
- Understanding the abnormal phenomena, which affect the electrical networks.
WHO SHOULD ATTEND
This course is intended for Engineers & supervisors who work in transmission, distribution, maintenance, operation, control and analysis of Utilities & Industrial Electrical Networks
PROGRAM
Day One
Introduction
- Importance of Continuity of Supply
- Power System Components.
- Causes of Faults
- Type of Faults.
System Grounding
- Generation Units
- Power Transformers
- Transmission Lines
- Distribution System
- Arrangement of Grounding in Power System
Day Two
Factors Effect The Fault Current Contribution & Continuity of Supply.
- Vector Groups
- Parallel Transformers with Different Vector Groups
- Grounding Transformers (Zigzag T., 3wdg.T.,..)
- Common & Separate Grounding Resistance (High & Low value) for Number of Parallel Transformers.
Fault Calculations
- System Configurations
- Per unit Values.
- Symmetrical Components
- Symmetrical & Unsymmetrical Fault Calculations.
- Short Circuit Level.
- Effect of Induction Machines on Short Circuit Level.
- Rupture Capacity of Circuit Breaker.
- Methods, To Reduce The Short Circuit Level.
- Peak Current Limiters.
- Numerical Examples.
Day Three
Male & False Operation Of The Following Protective Relays:
- Directional and non-directional over current & Earth fault Relays
- Differential and restricted earth fault Relays
- Impedance Relays
- Sensitive Earth Fault Relays
- Over fluxing Relays
- Bocholz Relays
- Case Studies.
Day Four
System Behavior Due To The Following Abnormal Operational Conditions:
- Shortage of active Power
- Shortage of Reactive Power
- Frequency deviations
- Voltage deviations
- Collapse of voltage
- Voltage stability
- Voltage rise
- Case Studies.
Day Five
Faults Due To The Following External & internal Influences:
- Lightning
- Pollution
- Switching
- Transients
- Harmonics
- Case studies (Brown out & Black out of Elect. Networks)
- Discussions.