An Energy Resource Scheduler Implemented in the Automatic Management System of a Microgrid Test Facility

Abstract

The paper deals with a microgrid test facility, settled at the CESI RICERCA laboratories, equipped with various distributed energy resources (DERs) and connected to a LV network. The operation of such a microgrid is supervised by a central automatic microgrid management system (MMS). The paper first reports and discusses some experimental results carried out for the assessment of DERs performance and for the implementation of specific MMS functions. Then, it describes the functions of the energy resources scheduler (ERS) implemented in the MMS. The scheduler periodically updates the set points of DERs regulators in order to achieve economic, reliability and power quality objectives, starting form the load and renewable production forecasts and from the results of the system state estimation. The ERS is composed by two main parts, namely: a day-ahead economic scheduler of active power set points during the following day for the minimization of the overall costs, and an intra-day scheduler that every 15 minutes settles the set points of the DERs regulators to optimize the voltage profile at the grid buses, taking into account both technical constraints and the day-ahead economic schedules

An aggregator for demand side management at domestic level including PEVs

“…With regard to the activities described in this paper, the operating cycles of the appliances have been characterized on the basis of measured profiles of actual devices in the test facility of RSE and depicted in Fig. 4 [12].…”

Key technologies for microgrids-a review

“…Models and simulations are essential to research into the security, stability and reliability about microgrid operation [4][5][6][7][8][9][10][11][12][13][14][15][18][19][20][21][22][23][24][25][26][27][28][29][30][31]. They can be divided into two levels: component-level and system-level.…”

Optimal Operating Point Calculation for Medium Voltage Distribution Systems

“…The considered iterative approach is a development of the algorithm originally built for a microgrid intra-day scheduler that takes into account the results of the day-ahead one and updates every 15 minutes the DERs set points for the optimization of the network voltage profiles [8][9][10]. For the purposes described in this paper, the objective function is the minimization of the square norm of the linear combination of three components: (i) the deviations of each DER active power output with respect the a corresponding set-point value P set , (ii) the value of network losses, and (iii) the voltage deviations at network buses with respect the rated value V set ,: …”