| Popis: |
In recent years, based on the magnification of usages of renewable energy and smart usage of energy, the demands of large-scale decentralized generating plants such as wind turbine generator systems and photovoltaic power systems is increasing. However, Large-scale wind and photovoltaic power generation facilities are usually installed in locations where few tall structures exist such as suburbs, resultantly, the damages caused by lightning stroke convergence to those facilities are serious problems [1-4]. In particular, in wind turbine generator systems, the occurrence probability of the damages caused by direct lightning strokes becomes higher than that in other power-generation systems because (1) It has rapidly high-structured in recent years, and (2) It has been installed in the place where extremely few tall structures exist such as hilly terrains and areas along sea shores. Many blade damages caused by lightning strokes and troubles of controls and communication facilities are reported [1-3]. The decline of the capacity factor depending on the operation stopping time and the increase of the repair cost became viewed with suspicion. |
