Supplying reliable electric power for critical systems is an essential part of modern industrial installations. Very often the supply received from a distribution network has quality issues such as voltage sags and swells, transients, harmonics, and interruptions. While it is impossible to guarantee 100% availability of power at all points in any system, vulnerable sections can be provided with alternative emergency power supply to ensure more reliable power availability, thereby avoiding the problems caused by power interruption.
An introduction to the measures against power interruptions, voltage variations, transients and harmonics will be discussed in this course.

WHO SHOULD COMPLETE THIS COURSE

• Recent graduate electrical, instrumentation or mechanical engineers
• Chemical engineers
• Electrical engineers
• Experienced electricians
• Fire and gas engineers
• Instrument and control systems engineers
• Instrument and process control technicians or technologists
• Instrument fitters
• Mechanical engineers

COURSE OUTLINE
SOURCES OF HARMONICS

• Linear and non-linear loads
• Harmonic components and Fourier transforms
• Non-linear loads as harmonic current sources
• Problems caused by harmonics in supply systems

CONTROLLING HARMONICS

• Controlling harmonics by decoupling
• Controlling by rectifier configuration and phase shifting
• Controlling harmonics by filters

NOISE CONTROL

• Effects on sensitive circuits (S/N ratio)
• Coupling of noise between circuits
• Mitigation by electrostatic screening
• Shielding against EMI
• Use of optical and transformer coupling for noise mitigation