Generalized Stability Solution for Metropolitan Type Systems

This paper presents general stability curves by means of which the transient stability during faults may be determined for any metropolitan type system. The results are obtained as the permissible fault duration in terms of certain indexes of the system and fault. These indexes may be found from a short-circuit study of the particular fault made on a d-c. calculating board or its equivalent. For a given fault only three readings are required to obtain the result.