Use of the A-C Network Analyzer and Electronic Differential Analyzer in the Study of Load-Frequency Control

A study of control action on power systems using a network analyzer and an EDA (electronic differential analyzer) is described. Components on the Bonneville Power Administration's analyzer automatically adjust phase-angles of the generators in response to a system disturbance. Although primarily for stability studies, this equipment permits study of control problems, with the control transfer functions represented on the EDA.