Ramp rate modeling for ERCOT look ahead SCED

Xu, X.; Howard, Roy

doi:10.1109/PESMG.2013.6672741

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Authors

Xu, X.

Howard, Roy

Date

2013

Type

Conference Paper

Metadata

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Citation

Xu, X. and Howard, R. 2013. Ramp rate modeling for ERCOT look ahead SCED.

Source Title

IEEE Power and Energy Society General Meeting

DOI

10.1109/PESMG.2013.6672741

ISBN

9781479913039

School

Department of Electrical and Computer Engineering

URI

http://hdl.handle.net/20.500.11937/56243

Collection

Curtin Research Publications

Abstract

Required by NPRR 351, starting June 28, 2012, ERCOT begins to post indicative real time market prices for future intervals. The indicative real time LMP's are calculated by a separated market application, which optimizes over the next hour based on forecasted load demand and wind generation. To explicitly model ramp rate constraints, the optimization model becomes a Mixed Integer Quadratic Programming (MIQP) problem, which imposes a major performance challenge. This paper discusses the measures have been taken during implementation to meet the real time performance requirement. © 2013 IEEE.