For good Voltage profile under no-load condition, a long line needs

A. shunt capacitors at receiving End
B. Shunt reactors at the receiving End
C. Shunt resistance at the receiving End
D. None of these

Answer:B. Shunt reactors at the receiving End 

Explanation: 

Shunt reactors

  • A shunt reactor is an absorber of reactive power, thus increasing the energy efficiency of the system.
  • Shunt reactor limits the overvoltage.
  • Shunt reactor uses as reactive power absorber.
  • it is used to compensate the undesirable voltage due to line capacitance (Ferranti effect). 
  • The sending end voltage is higher than the receiving end voltage. The shunt reactor reduces the voltage when the receiving end voltage is higher than the sending end voltage. 
  • Therefore, it increases the energy efficiency of the power system. 
  • It is the most compact device commonly used for reactive power compensation in long high-voltage transmission lines and in cable systems.
  • They are very costlier than series reactors.

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