摘要
为了提高大型光伏电站系统效率,实现电站发电能够达到长期的可靠性、安全性以及后期维护的方便性,在大型光伏电站中采用中大功率组合型逆变器,使得更多的光伏方阵拥有独立的MPPT模块,从而有效降低因为光伏方阵之间功率偏差、生物及自然因素对系统效率的影响。当系统中的部分逆变器出现故障时,只需要停止这部分功率模块,而与这台逆变器相联系的剩余方阵依然可以正常发电,这样就保证了逆变器的最大化利用。因此,合理采用中大功率组合逆变装置在大型光伏发电系统中的应用,对提高电站系统的效率和可靠性很有效,具有推广和应用价值。
In order to improve the efficiency of large PV power system and to achieve long-term reliability and safety of power generation ,as well the convenience of maintain power station, it use medium and high -powered combined inverter device in large PV power system .So that more photovoltaic square has independent MPPT PV module which could effectively reduce the impact which cause by power bias among the photovoltaic array and biological or natural factors . When some of the system invertor does not work, it only need to stop these modules while the remaining modules can still work normally,which ensuring its maximize use. Therefore it is very advantageous to improve the efficiency and reliability of large PV power system where adopt medium and high-powered combined inverter device,which has high value of promotion and application.
