Xinjiang Oil & Gas ›› 2022, Vol. 18 ›› Issue (2): 71-77.DOI: 10.12388/j.issn.1673-2677.2022.02.011

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Application of Solar Power Tower Technology in Integrated Energy System

  

  1. 1. Shandong Electric Power Construction Co.,Ltd.,III 2. Zhongxin Tanhe(Beijing)Technology Co.,Ltd.
  • Online:2022-06-24 Published:2022-06-30

塔式光热技术在综合能源系统中的应用

  

  1. 1.山东电力建设第三工程有限公司 2.中新碳合科技(北京)有限公司
  • 作者简介:张墨耕(1987-),2018年毕业于重庆大学动力工程及工程热物理专业,工程师,现从事太阳能发电研究。(Tel)0532- 87097685(E-mail)zhangmogeng@sepco3.com

Abstract: To support the design,execution and optimization of solar power tower technology,and facilitate the control of power plant operation,thermodynamic models of the receiver in the solar power tower system and the tracking control and calibration system of small heliostat have been developed,and successfully applied to predicting the performance of subsystems and the total power plant output. With this system,a high tracking accuracy and high availability of the heliostat during the operation of power plant are ensured. These models have played a key role in the development of solar power projects. For example,the 36.6 MW Sundrop solar power plant has collected a large amount of operation data since it was put into operation in the summer of 2016 to evaluate the accuracy of the per- formance model of each subsystem. The predicted values of system energy loss are compared with the values measured during actual operation. The results show that the measured absorption power is greater than the predicted absorption power,and the margins are - 1.4%,+8.3%,+5.3% and +0.3%,respectively,compared with the predicted absorption power,which is completely within the expected confidence interval. Performance of the power plant has not only met,but also exceeded the expectations in the phase of commissioning. The test data measured in each case have all accurately verified the model predictions. For SunDrop farm project,the guaranteed avail- ability is 98%,and the availability during commercial operation reaches over 99.5%.

Key words: solar power tower, integrated energy system, sunlight tracking, solar power plant, concentrating solar power(CSP)

摘要: 为了支持塔式光热技术的设计、实施、优化及电厂的运行控制,创建了塔式光热系统吸热器热力学模型和小定日镜跟踪控制和校验系统,并成功应用于子系统性能以及发电厂总产量的预测,保障了电厂运行期间定日镜的高追踪精度和高可利用率。在光热项目开发中,这些模型发挥了关键作用。比如36.6 MW的SunDrop太阳能发电站,自2016年夏天投产以来,收集了大量运行数据,以评估各子系统性能模型的准确性。将系统各项能量损失预测值与实际运行中的测量值进行对照,结果表明实测吸收功率超出预测吸收功率,相比预测吸收功率,裕量分别达到-1.4%、+8.3%、+5.3%和+0.3%,完全位于预期置信度区间内,电厂性能不仅达到预期,实际上在调试阶段已大大超出预期。在每种情况下测量的实验数据都能高度准确地验证模型预测。对Sundrop 农场项目,可用率保证值为98%,商运期间可用率达到了99.5%以上。

关键词: 塔式光热, 综合能源系统, 光线追迹, 太阳能电站, 太阳能聚光集热发电