In many engineering situations it is useful to scale, or normalize, dimensioned quantities. This is commonly done in power system…

The heart of any power electronic circuit is its semiconductor-switching network. The question arises here as to whether we have…

There are four ways to solve power quality problems: 1- Design equipment and electrical systems to prevent electrical disturbances from…

IEEE defined power quality disturbances into seven categories based on wave shape: 1. Transients 2. Interruptions 3. Sag/ Under voltage…

A null method of measurement is a simple, accurate and widely used method which depends on an instrument reading being…

All analogue electrical indicating instruments require three essential devices: (A) A DEFLECTING OR OPERATING DEVICE: A mechanical force is produced…

There are several important reasons why a grounding system should be installed. But the most important reason is to protect…

There are several ways in which the system and the generator may interact with subsynchronous effects. A few of these…

Subsynchronous resonance is a condition that can exist on a power system where the network has natural frequencies that fall…

Many adjustable-speed drives are equally sensitive to voltage sags as process control equipment discussed in the previous section. Tripping of…