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In Ferranti effect,Receiving end voltage is greater than
sending voltage,why? can anybody tell me the answer
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Answer Posted / urnav bagchi
Receiving end voltage being greater than sending end voltage in a transmission line is known as ferranti effect. All electrical loads are inductive in nature and hence they consume lot of reactive power from the transmission lines. Hence there is voltage drop in the lines. Capacitors which supply reactive power are connected parallel to the transmission lines at the receiving end so as to compensate the reactive power consumed by the inductive loads. As the inductive load increases more of the capacitors are connected parallel via electronic switching. Thus reactive power consumed by inductive loads is supplied by the capacitors thereby reducing the consumption of reactive power from trans line. However when the inductive loads are switched off the capacitors may still be in ON condition. The reactive power supplied by the capacitors add on to the transmission lines due to the absence of inductance. As a result voltage at the receiving end or consumer end increases and is more than the voltage at the supply end.This is known as ferranti effect.
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