INFLUENCE OF PHOTOVOLTAIC POWER-GENERATION ON REQUIRED CAPACITY FOR LOAD FREQUENCY CONTROL

We developed a mathematical model to evaluate the impact of small(roof top) photovoltaic (PV) power-generating stations on economic and perfo rmance factors for a larger scale power system. and applied this model to the Tokyo metropolitan stations to estimate both the individual an d aggregate contributions of the projected PV stations to the local po wer grid. We found that an electrical power system containing a 10% co ntribution from PV stations would require a 2.5% increase in load freq uency control (LFC) capacity over a conventional system. The break-eve nt cost for PV power generation was found to be relatively of PV power generation gave lower break-even costs. but economic and LFC consider ations imposed an upper limit of about 10% on PV contributions to the overall power systems.