Stability study of A-C power-transmission systems

FOR the operation of power-transmission systems of medium and long length, the problem of stability is becoming increasingly important. This is true in the steady state of the system as well as in the transient state, during and after the occurrence of a fault on the system. Since the design of the transmission system is primarily responsible for its proper operation, and since the a-c network analyzer offers the best means for system analysis, the present study was undertaken for the purpose of correlating the design and operational data by means of the a-c network analyzer. For this purpose several power-transmission systems were selected, and their steady-state and transient-stability characteristics studied. Thus the steady-state and transient-stability limits of the system were obtained on the analyzer.