Supplementary control of prime-mover speed governors

THE development of interconnected systems has required improvements in the manual and automatic control of load, frequency, and time. The speed governors of the prime movers have always provided the medium for supplementary control of frequency, load, and time. Experience with various types of control devices and the factors influencing their functioning have been discussed frequently in the technical literature. Recently the problem has been given renewed attention^1–5 with an effort to correlate experience with theory and to provide a basis for determining the proper characteristics of governors² and their supplementary control.