地面光伏电站的直击雷防护与探讨

Discussions on Lightning Protection of Terrestrial Photovoltaic Power Plants

近年来,我国太阳能光伏电站规模发展迅速,地面光伏电站的防雷措施的完善与否,直接影响到电站的安全稳定运行。通过对地面光伏电站常见的直击雷危害分析,充分考虑光伏电站面积、投资等因素,利用雷暴日等气象数据分析和计算结果,通过对徐州新沂宋山24 MW光伏电站防直击雷方案的分析,结合经济性、合理性、可行性等等因素,合理的提出了地面光伏电站的直击雷防护方案:对于一般地区的地面光伏电站,可不在光伏阵列区域大量设置避雷针,直接利用组件边框、支架及其他金属材料的等电位连接,集合完善的接地系统,大多数情况下可以化解直击雷危害,起到防雷的作用。提出了光伏电站防直击雷方案及建议,为地面光伏电站防雷实施提供了可靠、有效的理论依据。

In recent years, PV power plants are growing very fast in China. The lightning protection directly affects the safe and stable operation of ground PV plants. Through an analysis of common direct lightning hazards on the ground PV plant, with full consideration of the photovohaic power plant area and investment, using meteorological date and calculation result of thunderstorm day, and based on an in-depth analysis of the direct lightning protection scheme of 24 MW Xuzhou- Xinyi-Songshan photovoltaic power plant, this paper proposes a reasonable lightning protection scheme for ground photovohaic power plants. According to the scheme, for the ground PV plants in general areas, there is no need to install a large nmnber of lightning rods in the PV array, instead, component frames, brackets aml other metal materials can be connected together at the same potential to form a complete grounding system, which can overcome the direct lightning hazards in most cases. This paper also puts forward proposals and sugges- tions of photovohaic power plants against lightning, and provi- des a reliable theoretical and effective basis for the implemen- tation of the lightning protection for ground photovohaic power plants.