Control design for SVC's on the Mead-Adelanto and Mead-Phoenix transmission project

A major project is under construction to increase the capability of the 500 kV transmission system between Arizona and Southern California, USA. This project includes two 388 MVAr SVCs, which are needed primarily to stabilize power oscillations across the interface. The control system for these SVCs includes some new concepts to accomplish this stabilizing influence. This paper describes the important features of this control system, including the main design considerations.