塔式太阳能辅助燃煤发电系统技术经济性分析

被引：10

作者：

朱勇

裴杰

曹传钊

刘明义

机构：

[1] 中国华能集团清洁能源技术研究院有限公司

来源：

热力发电 | 2018年 / 02期

关键词：

塔式太阳能; 燃煤发电系统; 光电转换效率; 技术经济性分析; 平准化电力成本; 电价补贴; 碳捕集;

D O I：

暂无

中图分类号：

TK519 [太阳能利用]; TM621 [火力发电厂、热电站];

学科分类号：

080703 [动力机械及工程]; 080802 [电力系统及其自动化];

摘要：

塔式太阳能辅助燃煤发电是一种提高太阳能利用率、降低燃煤消耗的发电技术。该技术是将高温塔式太阳能热与常规燃煤发电机组相耦合,利用塔式太阳集热场产生高温蒸汽并参与燃煤电站系统作功。本文对某1 000 MW塔式太阳能辅助燃煤发电系统在太阳辐射资源和电网电力调度波动下的发电量及其构成(燃煤发电和太阳能发电)和电站全生命周期内的技术经济性进行了研究。结果表明:塔式太阳能辅助燃煤发电系统运营期内平均光电转换效率为18.2%,远高于常规塔式太阳能热发电站的光电转换效率;电站项目的平准化电力成本为0.319元/(k W·h),所得税后财务内部收益率为11.29%,具有良好的收益能力和较低的投资成本;塔式太阳能辅助燃煤发电系统比相同电力调度下1 000 MW燃煤电站少燃煤257.4万t,减少CO2排放723.8万t;当考虑碳捕集成本时,为使该塔式太阳能辅助燃煤发电系统与相同容量燃煤电站具有相同的市场竞争力,则需国家电价补贴0.065元/(k W·h)。

引用

页码：16 / 24

页数：9

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