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How to reduce the error cased by feranti effect on the protection relays ?

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Question ajoutée par Utilisateur supprimé
Date de publication: 2014/03/03
Himadri Roy
par Himadri Roy , MANAGER ELECTRICAL , STEAG ENERGY SERVICES

As we know due to Ferranty Effect Receiving End Voltage become greater than Sending End Voltage in Long Transmission Line.In long transmission line Between R,Y,B there is only Air. So line Capacitenc got increased in Low load Condition in the receiving End.As load will increasein Receiving End, line inductance will increase accordingly Receiving  End Voltage tend to reduce.

To overcome both the effect SVC( Static Var Compensator) is Used in Modern day T& D Lines.As well as System stability will increase.

Leonardo Banzali
par Leonardo Banzali , Electrical Maintenance-trainer , Sadara Chemical Company

Try to have time to read this websites.

http://electricalnotes.wordpress.com/2011/03/26/ferranti-effect/

http://www.electrical4u.com/ferranti-effect-in-power-system/

By using shunt reactors at the transmission lines.

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