Dynamic Ramping in Unit Commitment

Author

Li, Tao ; Shahidehpour, Mohammad

Author_Institution

Illinois Inst. of Technol., Chicago

Volume

22

Issue

3

fYear

2007

Firstpage

1379

Lastpage

1381

Abstract

This paper provides the modeling of dynamic ramping in unit commitment. Ramping up/down limits could be a constant, stepwise, or piecewise linear function of generation dispatch. The dynamic ramping limit is modeled as mixed integer linear constraints, and unit commitment is solved by a mixed integer programming (MIP) solver. Test results show the impact of dynamic ramping on unit commitment and the importance of modeling dynamic ramping in the minimization of system costs while taking into consideration physical and financial constraints of power systems.

Keywords

power generation dispatch; power system economics; constant linear generation dispatch function; dynamic ramping rate; mixed integer linear constraints; mixed integer programming solver; piecewise linear generation dispatch function; power systems; ramping down limit; ramping up limit; stepwise linear generation dispatch function; system cost minimization; unit commitment; Costs; Dynamic programming; Fluctuations; Lagrangian functions; Linear programming; Piecewise linear techniques; Power electronics; Power system dynamics; Power system modeling; System testing; Dynamic ramping; mixed integer programming (MIP); unit commitment (UC);

fLanguage

English

Journal_Title

Power Systems, IEEE Transactions on

Publisher

ieee

ISSN

0885-8950

Type

jour

DOI

10.1109/TPWRS.2007.901453

Filename

4282036