哈尔滨地区辐照度推算及NASA数据适用性分析

Estimation of irradiance and applicability analysis of NASA data in Harbin

针对哈尔滨地区太阳能瞬时直射辐射强度观测站少且长时间累计数据不足的问题,阐述了瞬时直射辐射强度推算原理,以NASA SSE 6.0数据库中22年地球表面气象和太阳能数据为基础,推算了哈尔滨地区以时间节点为因变量的太阳能日、月、年内瞬时直射辐射强度分布,得到了NASA数据库中该地区月辐射总量或月平均日辐射总量的偏差修正系数和非线性修正函数。计算结果表明,哈尔滨地区太阳能月辐射总量或月平均日辐射总量推算数据与部分统计测量数据变化规律相同,平均正向偏差为15.02%。NASA数据经修正后,可在太阳能发电或光煤混合发电初设和功率预测中参考应用。

Aiming at the problems of few observation stations for solar instantaneous direct radiation and insufficiency of long-time accumulated data in Harbin, the principle of estimating the instantaneous direct radiation intensity of solar energy is expounded.Based on the meteorological and solar data of the earth’s surface in NASA SSE 6.0 database for 22 years, the instantaneous direct radiation intensity distribution of solar energy in Harbin region during the day, month and year with time node as the dependent variable is calculated. The deviation correction coefficient and nonlinear correction function of total monthly radiation or monthly average daily radiation of the region in NASA SSE 6.0 database are obtained.The calculation results show that the estimated solar data of total monthly radiation or monthly average daily radiation has the same variation rule with those of some statistical measurement data in Harbin, with an average positive deviation is 15.02%.The revised NASA data can be used for reference in the initial design and power prediction of solar photovoltaic or solar hybrid coal-fired generation systems.