Changes in build 20240430:

• In NPC minimization projects, PHS AC hydro turbine (different machine than pump) creates operational reserve, added to diesel, grid and fuel cell.
• In NPC minimization projects, during each time step, if there is AC capacity shortage, added the option to run the PHS AC hydro turbine (different machine than pump) and, if not enough, the backup generator(s) to increase operating reserve and reduce capacity shortage.
• Added minimum backup generator running time.
• In the Excel of the simulation results, shown required operational reserve DC and AC and real reserve DC and AC.
• Fixed bug when calculating IRR in systems with fixed initial CAPEX.
• Fixed minor bugs.