塔式太阳能热发电全寿命周期成本电价分析

Analysis of Life-cycle Levelized Cost of Electricity for Tower Solar Thermal Power

塔式太阳能热发电是全球新能源近年发展的新亮点之一,成本电价高是制约其发展的主要原因。文中给出了塔式太阳能热发电站成本电价计算的全寿命周期模型,并结合建造成本、运营维护成本及发电量的预测,对影响成本电价的因素逐一分析,测算了中国塔式太阳能热发电站的预期成本电价。重点从材料、加工和安装运输3个维度对定日镜成本的变化趋势进行了分析。计算结果表明,成本电价随产能规模、单机装机容量及技术工艺因素的发展而下降,其中产能规模作用最为明显。

Tower solar thermal power(STP)is one of the most promising techniques of renewable energy in the world,but its development has slowed down because of its high cost.A life-cycle calculation model is built to predict the levelized cost of electricity (LCOE) of tower STP plants in China,and the integrating factors,including construction cost,the electricity generation and the operation & maintenance costs,are considered one by one.This study focuses on the downward-trend of heliostats cost caused by various motivations,through a method of decomposition of the manufacturing costs into material, manufacturing and transport cost.The study shows that the LCOE is declined by the development of the motivations of production capacity,installed capacity and technical matter,and the installed capacity makes the most significant effect.