Control levels of the microgrid environment

The DNO’s responsible for the technical operation in a medium and low voltage area, in which more than one Microgrids may exist. In addition, one or more MO’s are responsible for the Market Operation of this area. These two entities do not belong to the Microgrid, but they are the delegates of the grid. The DNO
refers to the operational functions of the system and the MO to the Market functions. It should be noted that, despite the autonomous operation of the Microgrid, it should ideally appear as a controlled, intelligent unit in coordination with the DNO.

The MGCC is the main responsible for the optimization of the Microgrid operation, or alternatively, it simply coordinates the local controllers, which assume the main responsibility for this optimization.

The LC’s control the Distributed Energy Resources (DER), production and storage units, and some of the local loads. Depending on themode of operation, they have certain level of intelligence, in order to take decisions locally. Of course, in any type of operation there are certain decisions that can be taken only locally.

Source:
Aris L. Dimeas, Nikos D. Natziargyriou “Operation of Multiagent System for Microgrid Control” IEEE Transactions on Power Systems, Vol. 20, No. 3, August 2005.




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