380 kilovolts 50 hertz length of a transmission line  250 kilometers given as.Steel core aluminum conductors were used in a three-phase transmission line and the diameter of these conductors was determined 20 millimeters given as. The roughness coefficient of these conductors is 0.9 , If the phase gaps are 5 meters . Average air temperature and air pressure along the line, respectively 25 °C  and 750 mmHg is. Under these given conditions, the line Assuming that it is operated at 494 kilovolts  voltage;  a) Calculate the corona loss per kilometer of a phase of the transmission line using the peek formula ?   b) Calculate the total corona losses that will occur in this transmission line using the peek formula. (Result will be entered in MegaWatts) ?

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Compensation Techniques

The compensation techniques are the methods that are employed in the electrical control systems to enhance the performance of the system. The performance are generally affected by the factors like lag in the compensating devices, slow response of the system of the components like sensors used in the control system. The basic compensation technique involves lag compensation, lead compensation or the combination of the both.