Transactive Energy in Electrical Power Systems with Virtual Power Plants

The energetic tendencies of self-production evident by the increase of microgrids, distributed energy resources, virtual power plants, among others, contribute in the development of mechanisms oriented to energy transactions. The present research proposes an heuristic method based on optimal DC power flows, that is used in minimization of costs by generation concept, for the analysis of the different forms of energy transactions, among which are the transactions by energy deviations, systems of transmission and power contracts. The analysis considers technical limitations, costs, energy balance, priority in renewable resources, pricing methods for transactions in the transmission system and the application of energy contracts; For optimization procedures, non-linear programming is used. The proposed algorithm is implemented in the IEEE test models of 4 and 118 buses.