Showing 2 results for Interruptible Load
F. Aminifar, M. Fotuhi-Firuzabad,
Volume 3, Issue 1 (1-2007)
Abstract
From the optimization point of view, an optimum solution of the unit
commitment problem with reliability constraints can be achieved when all constraints are
simultaneously satisfied rather than sequentially or separately satisfying them. Therefore,
the reliability constraints need to be appropriately formulated in terms of the conventional
unit commitment variables. In this paper, the reliability-constrained unit commitment
problem is formulated in a mixed-integer program format. Both the unit commitment risk
and the response risk are taken into account as the probabilistic criteria of the operating
reserve requirement. In addition to spinning reserve of generating units, interruptible load is
also included as a part of operating reserve. The numerical studies using IEEE-RTS
indicate the effectiveness of the proposed formulation. The obtained results are presented
and the implementation issues are discussed. Two sensitivity analyses are also fulfilled to
illustrate the effects of generating unit failure rates and interruption time of interruptible
load.
H. Rajabi Mashhadi, H. Safari Farmad,
Volume 11, Issue 1 (3-2015)
Abstract
The main goal of this paper is to present a new day-ahead energy acquisition model for a distribution company (Disco) in a competitive electricity market environment with Interruptible Load (IL). The work formulates the Disco energy acquisition model as a bi-level optimization problem with some of real issues, and then studies and designs a Genetic Algorithm (GA) of this optimization problem too. To achieve this goal, a novel two-step procedure is proposed. At the first step, a realistic model for an industrial interruptible load is introduced, and it is shown that Interruptible load model may affect the problem modeling and solving. At the second step, Disco energy acquisition program is formulated and solved with this realistic model. As a result, this paper shows energy acquisition programming model with ILs, by considering real assumptions. The introduced method shows a good performance of problem modeling and solving algorithm both in terms of solution quality and computational results. In addition, a case study is carried out considering a test system with some assumptions. Subsequently results show the general applicability of the proposed model with potential cost saving for the Disco
