格尔木地区光伏电站周边区域太阳辐射特征分析

利用青海格尔木光伏电站地区周边气象站1961~2010年常规和辐射气象资料，通过统计分析和方法，对格尔木光伏电站地区年、月、日、候辐射特征进行了时空分布特征分析，结果表明：格尔木及其周边太阳辐射资源较丰富，格尔木月总辐射为双峰型，从3月开始急剧增加，5月达峰值，6月略有下降后，7月又回升达次高值，9月迅速下降，冬季12、1月达最小值。近5年月辐射由双峰型变为单峰型。格尔木日辐射持续时间最长的是5月、6月和7月，日辐射时间分别达到15h，格尔木候最大辐射量出现在第30候（5月26～31日），最小为第12候（2月26～28/29日）。从整体来看，格尔木候辐射为先上升，后下降的趋势（1～36候为上升，37～72候下降）。

Analysis on the Characteristics of Radiation Intensity of the Photovoltaic power station in Golmud

By using the principle statistical analysis and methods based on the meteorological data over 1961-2010 in photovoltaic power station area of Golmud, the paper researches the year, month, day, pentad radiation characteristics,the results showed that: the solar radiation resources are abundant over the Golmud area, Golmud month total radiation is bimodal pattern, it increased rapidly from the beginning of March, peaking in May, declined slightly in June, July rose as high value decreased rapidly, in September, the lowest in Dec and Jan of winter,but in the recent 5 years,the type of radiation become to single peak pattern.Golmud daily radiation duration is the longest in May, June and July, radiation time can reach 15h.The maximum amount of pentad radiation appears in the thirtieth pentad (May 26 ~ 31 days), the minimum appears in the twelfth (February 26 ~ 28/29 day). On the whole, Golmud pentad radiation increased firstly, then decreased (1 ~ 36 pentad rising, 37 ~ 72 pentad down).