Agent-based distribution circuit automation

This paper presents results from ongoing efforts to (1) equip an existing utility distribution circuit with current automation and communications technology and to (2) develop an agent-based control scheme that can manage the distribution circuit in real time. The control scheme is being designed to increase the reliability and efficiency of the circuit by managing reactive power resources, distributed generators and switching devices in real-time according to agreed-upon operating goals. The agent-based control methods are being tested with models of an existing distribution circuit (the ldquocircuit of the futurerdquo) at Southern California Edison, which has recently been retrofitted with an advanced protective scheme using multiple on-circuit fault interrupters with intelligent electronic device (IED) relays, and a DG interconnection point. Additional planned retrofits on the circuit of the future will include a power electronics based dynamic reactive support device. Simulation results in this paper illustrate that the control methods managing and coordinating legacy and advanced devices can significantly improve the voltage profile, reduce losses and decrease restoration times relative to the existing control schemes.