15 DEZEMBRO / SEXTA FEIRA / 23:42
FCUP PT 
 EN
 
 
APRESENTAÇÃO
PESSOAS
ENSINO
INVESTIGAÇÃO
BIBLIOTECA
NOTÍCIAS
CONTACTOS

Technical Report: DCC-2014-05

Unit commitment with valve-point loading effect

João Pedro Pedroso

INESC Porto and Faculdade de Ciências, Universidade do Porto, Portugal
e-mail: {jpp}@dcc.fc.up.pt

Mikio Kubo

Tokyo University of Marine Science and Technology, Japan
e-mail: {kubo}@kaiyodai.ac.jp

Ana Viana

INESC Porto and Instituto Superior de Engenharia, Instituto Politécnico do Porto, Portugal INESC Porto and Faculdade de Ciências, Universidade do Porto, Portugal
e-mail: {aviana}@inescporto.pt
April 2014

Abstract

Valve-point loading affects the input-output characteristics of generating units, bringing the fuel costs nonlinear and nonsmooth. This has been considered in the solution of load dispatch problems, but not in the planning phase of unit commitment. This paper presents a mathematical optimization model for the thermal unit commitment problem considering valve-point loading. The formulation is based on a careful linearization of the fuel cost function, which is modeled with great detail on power regions being used in the current solution, and roughly on other regions. A set of benchmark instances for this problem is used for analyzing the method, with recourse to a general-purpose mixed-integer optimization solver. Keywords: Unit Commitment, Load Dispatch, Combinatorial Optimization, Mixed-integer Programming.


FCUP 2017