access icon free Power flow control of intertied ac microgrids

© The Institution of Engineering and Technology
Received 09/11/2012, Accepted 31/03/2013, Revised 10/03/2013, Published

Microgrids are small reliable grids formed by clustering distributed sources and loads together. They can, in principle, operate at different voltages and frequencies like 50, 60, 400 Hz or even dc. Tying them together or to the mains grid for energy sharing would therefore require the insertion of interlinking power converters. Active and reactive power flows of these converters should preferably be managed autonomously without demanding for fast communication links. A scheme that can fulfill the objectives is now proposed, which upon realised, will result in more robustly integrated microgrids with higher efficiency and lower reserve requirement. The scheme presented has been tested in experiments with results captured and discussed in a later section.

Inspec keywords: reactive power control; power convertors; distributed power generation; load flow control

Other keywords: power flow control; energy sharing; reactive power flows; intertied ac microgrids; active power flows; distributed sources clustering; interlinking power converters

Subjects: Power convertors and power supplies to apparatus; Distributed power generation; Power and energy control; Power system control; Control of electric power systems

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