Temporary islanded operation of dispersed generation on distribution networks

• Published in: 39th International Universities Power Engineering Conference, 2004. UPEC 2004 Vol. 3; pp. 987 - 991 vol. 2
• Main Authors: Caldon, R., Rossetto, F., Turri, R.
• Format: Conference Proceeding
• Language: English
• Published: Bristol IEEE 2004; University of the West of England (UWE)
• Subjects: Applied sciences; Distributed power generation; Disturbances. Regulation. Protection; Electrical engineering. Electrical power engineering; Electrical power engineering; Exact sciences and technology; Hydroelectric power generation; Mesh generation; Miscellaneous; Operation. Load control. Reliability; Photovoltaic systems; Power electronics, power supplies; Power generation; Power networks and lines; Power supplies; Power system dynamics; Synchronous generators; Wind energy generation; Wind power generation; Inverter; Autonomous system; Electric generator; Outage; Control system; Unsteady state; Power supply; Distributed power generation; Steady state; Energy resources; Decentralized system; Loss of mains; System simulation; Feasibility; Distribution network
• ISBN: 9781860433658; 1860433650

The use of decentralized electrical energy resources may be a useful support to the main power supply. In particular, in the event of an upstream supply outage, the temporary islanding operation of dispersed generators in distribution networks might greatly improve the quality and continuity of the power supply. The aim of this work is to verify the feasibility of temporary grid-disconnected operation of autonomous portions of distribution networks that use embedded generators. The analysis focuses on the critical transients occurring at disconnection from and reclosure with the main supply. A realistic distribution network model with both rotating and static embedded generators has been considered. Suitable P-and V-f control schemes for static generators have been developed, making it possible to operate in both grid-connected and island modes. The simulation results show that the presence of static (or inverter interfaced) generators with suitable control schemes may greatly improve the steady-state as well as transient performance of the islanded generation park.