LOAD FLOW ANALYSIS OF TRANSMISSION NETWORK WITH SERIES COMPENSATION

The increase in electrical energy demand has presented higher requirements from the power industry during past two decades. In recent years, the highly increasing cost of building new transmission lines, compounded by the difficulty to obtain new transmission corridors, has led to a search for increasing the transmission capacity of existing lines. Use of series capacitors for compensating part of the inductive reactance of long transmission lines increases the power transmission capacity as well as improves the system stability. Transmission line compensation implies a modification in the electric characteristic of the transmission line with the objective of increase power transfer capability. The series compensator is primarily applied to solve load flow problems which may be related to length of line or structure of transmission network. This paper presents an analysis of the location of series capacitor, effect of series line compensation level on the line voltage profile, transferred power and transmission losses. Also it gives information about problem formulation for load flow analysis. For this purpose simple three bus model has been developed in MATLAB/SIMULINK. It gives basic mechanism of series compensation also highlight its benefits for power system