A comparison of interior-point codes for medium-term hydro-thermal coordination

This paper studies the performance of newly developed and currently under development interior-point optimization codes as applied to the solution of medium-term hydro-thermal coordination (MTHTC) problems. The authors compare commercial and research codes, and their main advantages and drawbacks are pointed out. The codes that they study are: CPLEX 3.0-barrier; HOPDM; LOQO; PCx; LIPSOL; and IPA1 (a code currently being developed by the authors). All codes have been tested on the Spanish hydrothermal power system.