NEUTRAL GROUNDING AND ITS ADVANTAGES
The process of connecting neutral point of 3-phase system to earth (i.e. soil) either directly or through some circuit element…
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GENERATION OF ELECTRICAL ENERGY
The conversion of energy available in different forms in nature into electrical energy is known as generation of electrical energy.…
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IMPORTANCE OF ELECTRICAL ENERGY
Energy may be needed as heat, as light, as motive power etc. The present-day advancement in science and technology has…
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REQUIREMENTS OF SATISFACTORY ELECTRIC SUPPLY
The electric power system in India is 3-phase AC operating at a frequency of 50 Hz. The power station delivers…
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EFFECTS OF VARIABLE LOAD ON POWER STATION
The variable load on a power station introduces many perplexities in its operation. Some of the important effects of variable…
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EVALUATING SYSTEM HARMONICS
In order to prevent or correct harmonic problems that could occur within an industrial facility, an evaluation of system harmonics…
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EFFECTS AND NEGATIVE CONSEQUENCES OF HARMONICS
The effects of three-phase harmonics on circuits are similar to the effects of stress and high blood pressure on the…
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SOURCES OF HARMONICS
Conventional electromagnetic devices as well as semiconductor applications act as sources of harmonics. Conventional electromagnetic devices include stationary transformer as…
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ROTATING MACHINE AS A SOURCE OF HARMONICS
Rotating machines also act as source of harmonics in power system. Causes of harmonics generation in rotating electrical machines are…
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MAGNETIZATION NONLINEARITIES OF TRANSFORMERS AS A SOURCE OF HARMONICS
Transformer magnetic material characteristic is nonlinear. This non linearity is the main reason for harmonics during excitation. Sources of harmonics…