Power Systems Archives - Page 2 of 3

Ungrounded or Isolated Neutral System Disadvantages

April 24, 2016

There will be no flow in the zero sequence currents In ungrounded or isolated neutral system there will be little...

Neutral Grounding Practice in Power System

April 24, 2016

Generally on neutral grounding is provided at each voltage. There will be several voltage levels between the generation of the...

Shunt Capacitor Advantages in Power System

April 24, 2016

Normal loads on ac supply system are inductive in nature (eg: motors, power transformers, voltage regulators, induction furnace, choke coils,...

Reactive Power Sources and Sinks in Power System

April 24, 2016

Dynamic Reactive Power Sources: It includes reactive power compensators which have the ability to respond within duration of cycles and...

Voltage Variations Effects on Power Plant Equipment

April 24, 2016

When the voltage at the terminal of the electrical equipment deviates from the value as specified from the name plate...

Factors affect Voltage Level Selection in Service System

April 24, 2016

Some of the factors that effect the selection of nominal voltage levels for the service systems are: Type and size...

Harmonics Disadvantages in Power System

April 24, 2016

Sources of Harmonics: Several sources of harmonic currents that may be found on electrical power distribution networks are listed below:...

Generating Station Grounding Principles

April 24, 2016

Grounding systems in the generating stations should able to meet the following grounding principles: Grounding Principles: Metallic enclosure on electrical...

Ferroresonance in Power Transformers

April 24, 2016

Ferroresonance: Ferroresonance phenomenon can be triggered off through interaction of the system capacitance with a non-linear inductance, when transformer is...