Overload prevention and loss minimisation in managed distribution networks

Summary form only given as follows. We present the concept of a ´managed distribution network´, in which current flowing between a power distribution network and its supplies and loads is divided into ´discretionary´ and ´nondiscretionary´ components. The discretionary component is placed under the control of an energy management system, which communicates its requirements as current setpoints. The nondiscretionary component is determined by the external circuit itself, but is subject to authorisation from the control system to ensure that demand never exceeds the available discretionary capacity. We develop a theoretical framework for the analysis of managed distribution networks, and its application to the problems of cable loss minimisation and the anticipation and prevention of cable overloads.