Ken Yanagihashi

Development of a predictive prevention method for the midterm stability problem using only local information

There has recently been a consolidation of power system stability in connection with the extension and complication of power systems, although unstable behavior after a serious fault has been expanding from the transient area to the dynamic area. We therefore undertook the development of a dynamic stabilization method based exclusively on local information. In this paper we propose a new concept of real-time modeling after a fault, using only local information. The control actions for stabilization of the power system are determined by behavioral prediction based on differential equations. The control actions of each generator are based on stability judgments at each local site. Case studies are presented to demonstrate the validity of the proposed method.