A COMPARISON OF INTERIOR-POINT CODES FOR MEDIUM-TERM HYDROTHERMAL COORDINATION

This paper studies the performance of newly developed and currently un der development interior-point optimization codes as applied to the so lution of medium-term hydro-thermal coordination (MTHTC) problems. We compare commercial and research codes, and their main advantages and d rawbacks are pointed out. The codes that we study are: CPLEX 3.0-barri er [1] (the latest version of OB 1 by Lustig), HOPDM by Gondzio [14], LOQO by Vanderbei [17], PCx by Mehrotra's group [16], LIPSOL by Zhang [22], and IPA1 [25] (a code currently being developed by the authors). All codes have been tested on the Spanish hydrothermal system.