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TD3 - Management of the Multi-Microgrid

The sub-tasks envisaged to develop the functionalities of the CAMC are the following:
TD3.1 - Local State Estimation
The local controllers (MGCC) have large quantity of useful information for state estimation. Routines for extracting-exchanging this information can be developed. These routines should minimize the amount of required data, so that a method to exchange messages with high quantity of information should be developed. New algorithms for distributed state estimation will be developed and tested by ICCS/NTUA and Labein. Fuzzy state estimation approaches, already in use in some DMS environments, will be tested to deal with islanding operation modes and network topology changes, exploiting information collected from MGCCs, network measurements and specific pseudo-measurements. INESC Porto will develop these approaches.
TD3.2 Coordinated Voltage Support and Flow Control
Specific tools will be developed for the coordination of Voltage VAR control, taking into account the specificities of different DG units, Microgrids (according to their microsource capabilities), capacitor banks, SVCs and OLTCs. Different optimization methods will be tested and compared. Manchester and ICCS/NTUA will provide tools based on conventional approaches. INESC Porto will exploit particle swarm optimization techniques to deal with this problem. ISET will assess the Var-exchange and the transient active power sharing via the MV-system by means of simulation (ATP-EMTP) and measurements with the Medium-Voltage simulator installed at DemoTec.
TD3.3 - Coordinated Frequency Support
An evaluation of the amount of frequency support that can be provided, following a large change of frequency or upon a request from a central AGC, will be performed. This shall include a coordination of the contributions, to be defined by the CAMC, which will be partially implemented in a decentralised way through the MGCCs for the microsources. Coordination with load curtailment will be implemented and tested. Different Microgrid composition (regarding microsource types) will be tested. Dynamic equivalents (derived in TD2) of the Microgrids and dynamic models of other DG units will be used under a pre-defined simulation environment, like Eurostag. Experience gathered by Siemens in this field will be exploited here. This task will be developed by INESC Porto with the participation of ICCS/NTUA, Siemens and ABB that will contribute for the identification of the amounts and types of reserve levels required and for the identification of the providers of such reserves. ABB will also develop studies to identify benefits from selling reserves to the host grid operator.