Acronym:

Planning and Operation of Active Distribution Networks and Microgrids 

From: 2007-01-01 To: 2011-12-31 (Completed)

MZOS 2007 

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Davor, Škrlec

6129 921 

Deregulation of the energy sector, among other, amplified the prospects of distributed power generation, thus broadly increasing the use of distributed generation and its integration in distribution networks. With an increasing number of generation units within the distribution network, the conventional passive radial layout is disappearing with innovative operations, planning and management. For that reason, research is committed to defining the paradigm of new active distribution networks and microgrids. A microgrid is a section of a distribution network encompassing associated controllable distributed resources – all types of distributed generation including renewables, remotely controlled devices (in terms of Demand-Side management) and energy storage units. Microgrids are connected to the distribution grid by fast power electronic devices forming a distinctive controllable demand point that may even be autonomous. Customers within microgrids consequently have better quality and higher availability of power supply, along with probably smaller costs. The complete integration of microgrids demands the definition of technical standards, relevant policies and recommendations for all legal participants. In order to achieve market competitiveness for just one microgrid or more virtually grouped distributed resources, it is necessary to develop specific analyses for supporting unit commitment and economic dispatch, especially for central controllers. Of particular interest are methods for optimal reconfiguration and restoration from both the grid and microgrid viewpoint. Determining the optimal size, type and location of a microgrid in a distribution network is significant for the customer and for the grid operator. For the customers of the microgrid the ability to manage energy production and acquisition, with other measures of energy efficiency, presents a business opportunity. For the grid operator, microgrids are important in terms of load forecasting, network expansions and network reinforcements. Viable methods applicable in deregulated energy markets should be based on multiobjective optimization and decision theory, along with appropriate risk assessment and uncertainty handling.