BOOSTER TRANSFORMER
BOOSTER TRANSFORMER Sometimes it is desired to control the voltage of a transmission line at a point far away from …
AUTO TRANSFORMER TAP CHANGING
AUTO TRANSFORMER TAP CHANGING The figure shows diagrammatically auto-transformer tap changing. Here, a mid-tapped auto-transformer or reactor is used. One …
TAP CHANGING TRANSFORMERS
TAP CHANGING TRANSFORMERS The excitation control method is satisfactory only for relatively short lines. However, it is not suitable for …
Excitation Control in Power Systems
Excitation Control in Power Systems When the load on the supply system changes, the terminal voltage of the alternator also …
BROWN BOVERI REGULATOR
BROWN BOVERI REGULATOR In this type of regulator, the exciter field rheostat is varied continuously or in small steps instead …
SUBSYNCHRONOUS RESONANCE
SUBSYNCHRONOUS RESONANCE Subsynchronous resonance is a condition that can exist in a power system where the network has natural frequencies …
INFLUENCE OF SHORT INTERRUPTIONS ON EQUIPMENT
INFLUENCE OF SHORT INTERRUPTIONS ON EQUIPMENT During a short interruption, the voltage is zero; thus, there is no supply of …
SWITCHGEAR EQUIPMENT
SWITCHGEAR EQUIPMENT Switchgear covers a wide range of equipment concerned with switching and interrupting currents under both normal and abnormal …
ESSENTIAL FEATURES OF SWITCHGEAR | Switchgear: Features, Components, and Classification
ESSENTIAL FEATURES OF SWITCHGEAR The essential features of switchgear are: (I) COMPLETE RELIABILITY With the continued trend of interconnection and …
THE NEED FOR SWITCHING IN POWER ELECTRONIC CIRCUITS
THE NEED FOR SWITCHING IN POWER ELECTRONIC CIRCUITS The heart of any power electronic circuit is its semiconductor-switching network. The …
