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Reading: Why Reactive Power is Generated at Load
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Inst Tools > Blog > Power Systems > Why Reactive Power is Generated at Load

Why Reactive Power is Generated at Load

Last updated: September 20, 2016 2:04 pm
Editorial Staff
Power Systems
1 Comment
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Reactive Power if possible should be generated close the load centers or close to the point of its consumption.

Some of the reasons why reactive power cannot beĀ transmittedĀ to long distances are:

  • It is inefficient during the high real power transfer and also requires higher voltage magnitude gradients.
  • It causes high real and reactive power losses if reactive power is transmitted through long distances. Real power losses should be kept minimum for economic point of view and reactive power should be reduced to minimize the investment in reactive power devices such as shunt capacitors.
  • It can lead to damagingĀ temporaryĀ over voltagesĀ followingĀ load rejections. When theĀ receivingĀ end circuit breaker opens with transmission line still energized from sending end, then over voltages occurs as the voltage magnitude depends upon the reactive power in the system. Over voltage will damage the insulation of theĀ conductorĀ andĀ wingdings.
  • If reactive power is to be transmitted through long distances in the power system It requires larger size of theĀ equipmentĀ  (transformers and cables) in the power system.
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1 Comment
  • swapan Ranjan Guha says:
    January 25, 2020 at 5:37 pm

    I found your article on the ungrounded neutral system and reactive power generation at the load quite informative. In future, I would like to have similar articles on Electrical Engineering.

    Reply

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