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Control Principles for Blackstart and Island Operation of Microgrid
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| Author(s) |
H. Laaksonen, K. Kauhaniemi |
| Abstract |
In some unexpected situations a microgrid may become unstable after transition to islanded mode and all DG
units must be disconnected from microgrid. In case of these events
a restoration strategy for microgrid blackstart is needed. Also if the islanded microgrid is divided into different protection zones in case of a fault, fault management strategy with capability of very fast operation is needed to maintain stability in the healthy section of the islanded microgrid. The control of microgrid voltage and frequency during the microgrid blackstart is not
possible without energy storage unit. In this paper sequence of actions for the microgrid blackstart operation as well as control principles of some DG units during blackstart are defined and
simulated with two different microgrid configurations. Also one simulation case considering fault management strategy and control principles during fault in islanded microgrid is presented.
Based on the simulations dimensioning principles for the needed energy storage and size of simultaneously controlled loads can be drawn. |
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| Filename: | Unnamed file |
| Filesize: | 730.8 KB |
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| Type |
Members Only |
| Date |
Last modified 2008-09-30 by System |
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