transmission line based questions

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question 3:  Series capacitor compensation in EHV Transmission line is used to
         
answer:     improves the stability of the transmission line.
                     
                 HOW?
                                           xL Is reactance on T. line 
                                           here capacitive reactance is taking also

                                             Xt =  Xl - Xc
                                           
                                           sss = 1/reactance
                                  here reactance is decreasing and sss will be increased so steady-state stability will be limited.
                                  So, for improving the stability we use a series capacitor compensation.
for improving stability we use series compensator. fault der se aayega.

 question 4:  corona loss on a particular system at 50Hz is 1Km/phase, the corona loss at 60Hz will be?
                   
           Sol:
                                  corona loss jo hota hai vo ek distance pr energy loss hota hai.
                                     corona loss proportion to (frq+25 )     
                     
                                   Pc2/Pc1= f2+25/f1+25
                                     
                                          Pc2= (60+25/50+25)*Pc1
                                               =1.3333 KW/phase      Answer
                         
                                   
                                   

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