Infoscience

Conference paper

Short-term scheduling of active distribution systems

The latest distribution management systems tend to incorporate optimization functions for the short-term scheduling of the various energy and control resources available in the network (e.g., embedded generators, reactive power compensators and transformers equipped with on-load tap changers). The short-term scheduling procedure adopted in the paper is composed by two stages: a day-ahead scheduler for the optimization of distributed resources production during the following day, an intra-day scheduler that every 15 minutes adjusts the scheduling in order to take into account the operation requirements and constraints of the distribution network. The intra-day scheduler solves a non-linear multi-objective optimization problem by iteratively applying a mixed-integer linear programming (MILP) algorithm. The linearization of the optimization function and the constraints is achieved by the use of sensitivity coefficients obtained from the results of a three-phase power flow calculation. The paper shows the application of the proposed approach to a medium-voltage 120 buses network with 10 dispatchable generators and 2 transformers equipped with on-load tap changers. © 2009 IEEE.

    Keywords: Distributed generation ; MILP ; Operation of distribution networks ; Distributed resources ; Distribution management systems ; Distribution network ; Distribution systems ; Medium voltage ; Mixed-integer linear programming ; Multi-objective optimization problem ; Non-linear ; On-load tap changers ; Optimization function ; Reactive power compensator ; Sensitivity coefficient ; Short-term scheduling ; Three-phase power flow ; Two stage ; Distributed parameter networks ; Distributed power generation ; Electric load management ; Embedded systems ; Integer programming ; Linear programming ; Linearization ; Multiobjective optimization ; Power transformers ; Voltage control ; Distribution functions ; epfl-smartgrids

    Note:

    Department of Electrical Engineering, University of Bologna, Italy Department of Electrical Engineering, University of Genova, 16145 Genova, Italy, Conference code: 78575, Cited By (since 1996): 1, Export Date: 25 April 2012, Source: Scopus, Art. No.: 5281921, doi: 10.1109/PTC.2009.5281921, Language of Original Document: English, Correspondence Address: Borghetti, A.; Department of Electrical Engineering, University of BolognaItaly; email: alberto.borghetti@mail.ing.unibo.it, References: Jenkins, N., Allan, R., Crossley, P., Kirschen, D., Stcbac, G., (2000) Embedded Generation, , London: IEE Publisher; Choi, J.H., Kim, J.C., Advanced voltage regulation method of power distribution systems interconnected with dispersed storage and generation systems (2001) IEEE Trans. on Power Delivery, 16 (2), pp. 329-334. , April; Lasseter, R., Akhil, A., Marnay, C., Stevens, J., Dagle, J., Guttromson, R., Meliopoulous, A.S., Eto, J., (2002) White Paper on Integration of Distributed Energy Resources- The MicroGrid Concept, , http://certs.lbl.gov/pdf/50829-app.pdf, Available at; Bongrain, P., Voirin, D., A new DMS voltage control function for cost effective operation of the network (2002) Proc. of CIDEL, , Buenos Aires, Argentina; Dimeas, A.L., Hatziargyriou, N.D., Operation of a multiagent system for microgrid control (2005) IEEE Trans. on Power Systems, 20 (3), pp. 1447-1455. , August; Wasiak, I., Thoma, M.C., Foote, C.E.T., Mienski, R., Pawelek, R., Gburczyk, P., Burt, G.M., A power-quality management algorithm for lowvoltage grids with distributed resources (2008) IEEE Trans. on Power Delivery, 23 (2), pp. 1055-1062. , April; Bertani, A., Borghetti, A., Bossi, C., Biase, L.D., Lamquet, O., Massucco, S., Morini, A., Silvestro, F., Management of low voltage grids with high penetration of distributed generation: Concepts, implementations and experiments (2006) Proc. of CIGRE General Session, , Paris; Borghetti, A., Bosetti, M., Grillo, S., Morini, A., Paolone, M., Silvestro, F., A two-stage scheduler of distributed energy resources (2007) Proc. of the 2007 IEEE Lausanne PowerTech, , Lausanne, Switzerland, July 1-5; Zhou, Q., Bialek, J.W., Simplified calculation of voltage and loss sensitivity factors in distribution networks (2008) Proc. of the 16th Power Systems Computation Conference (PSCC2008), , Glasgow, Scotland, July 14-18; Borghetti, A., Bosetti, M., Nucci, C.A., Paolone, M., Massucco, S., Silvestro, F., Scalari, S., A procedure for the automatic scheduling of distributed energy resources in medium voltage networks (2009) Proc. of the 20th Int. Conf. on Electricity Distribution, CIRED 2009, , Prague, 8-11 June

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