Ungrounded or Isolated Neutral System Disadvantages
There will be no flow in the zero sequence currents In ungrounded or isolated neutral system there will be little interference with the communication lines because of the absence of
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Power Systems
Neutral Grounding Practice in Power System
Generally on neutral grounding is provided at each voltage. There will be several voltage levels between the generation of the power and distribution of the power in the power system.
Shunt Capacitor Advantages in Power System
Normal loads on ac supply system are inductive in nature (eg: motors, power transformers, voltage regulators, induction furnace, choke coils, magnetic systems, discharge tubes etc) Inductive power requires reactive power
Reactive Power Sources and Sinks in Power System
Dynamic Reactive Power Sources: It includes reactive power compensators which have the ability to respond within duration of cycles and try to balance the reactive power requirement in the system.
Voltage Variations Effects on Power Plant Equipment
When the voltage at the terminal of the electrical equipment deviates from the value as specified from the name plate the equipment performance and life time of the equipment are
Factors affect Voltage Level Selection in Service System
Some of the factors that effect the selection of nominal voltage levels for the service systems are: Type and size of the load to be served Distance to which power
Harmonics Disadvantages in Power System
Sources of Harmonics: Several sources of harmonic currents that may be found on electrical power distribution networks are listed below: Variable speed motor drives Rectifiers Arc furnaces Wielding equipment Uninterrupted
Generating Station Grounding Principles
Grounding systems in the generating stations should able to meet the following grounding principles: Grounding Principles: Metallic enclosure on electrical equipment and exposed non current carrying conductive materials in generating
Ferroresonance in Power Transformers
Ferroresonance: Ferroresonance phenomenon can be triggered off through interaction of the system capacitance with a non-linear inductance, when transformer is at no-load. This oscillatory phenomenon or resonance phenomenon result in
Shunt Vs Series Capacitors Advantages
Shunt Vs Series Capacitors Advantages Capacitors aid in minimizing losses and helps in reducing operating expenses. Capacitors should be placed where the reactive power demand is more as capacitors generate