EN抛物槽式聚光太阳能集热回路动态特性研究
Study on Dynamic Characteristics of Parabolic Trough Solar Collector Circuit
- 发电技术 2021年42卷第6期 页码：673-681
- 作者机构：
南京师范大学能源与机械工程学院, 江苏省 南京市 210042
- 作者简介：
[ "刘兰华(1998), 女, 硕士研究生, 研究方向为太阳能光热利用、智慧能源综合调度, 1328761744@qq.com" ]
[ "狄林文(2001), 男, 研究方向为太阳能全光谱利用以及能源综合调度, 2022572750@qq.com" ]
[ "董兴万(1999), 男, 硕士研究生, 研究方向为太阳能光热利用, 135871678068@qq.com" ]
王瑞林(1992), 男, 博士, 讲师, 研究方向为太阳能综合利用, 本文通信作者, wangruilin@njnu.edu.cn
- 基金信息：国家自然科学基金青年基金项目(52106014)
DOI：10.12096/j.2096-4528.pgt.21066
中图分类号： TK513收稿：2021-05-26，
纸质出版：2021-12-31
- 稿件说明：
移动端阅览
刘兰华, 狄林文, 董兴万, 等. 抛物槽式聚光太阳能集热回路动态特性研究[J]. 发电技术, 2021,42(6):673-681.
Lanhua LIU, Linwen DI, Xingwan DONG, et al. Study on Dynamic Characteristics of Parabolic Trough Solar Collector Circuit[J]. Power Generation Technology, 2021, 42(6): 673-681.
刘兰华, 狄林文, 董兴万, 等. 抛物槽式聚光太阳能集热回路动态特性研究[J]. 发电技术, 2021,42(6):673-681. DOI： 10.12096/j.2096-4528.pgt.21066.
Lanhua LIU, Linwen DI, Xingwan DONG, et al. Study on Dynamic Characteristics of Parabolic Trough Solar Collector Circuit[J]. Power Generation Technology, 2021, 42(6): 673-681. DOI： 10.12096/j.2096-4528.pgt.21066.
摘要
太阳辐射存在间歇性和不稳定性，其动态不稳定性影响抛物槽式太阳能集热器集热参数的稳定输出，因此，针对抛物槽式太阳能集热器开展聚光集热过程动态特性研究极为重要。基于MATLAB/Simulink软件内的Simscape环境，构建了抛物槽式太阳能聚光集热一维回路的动态仿真模型。基于所验证的动态仿真模型，获得了工质流量及太阳直射辐射2个关键参数对槽式回路出口温度的影响规律。根据所获规律，基于比例积分控制，构建了槽式一维回路的动态调控策略，结果表明：该控制策略可在太阳直射辐射跃升时使系统聚光集热温度在2 500 s内达到设定温度395℃；而在太阳直射辐射下降时将输出温度波动维持在±2℃以内。基于所构建的系统动态控制策略进行了系统典型日变工况运行，结果表明：系统可在变工况条件下维持聚光集热温度稳定，聚光集热效率接近理想值，达到控制目的。研究为抛物槽式太阳能聚光集热回路动态仿真模型构建提供了新方法，所得结果可为槽式聚光集热动态运行提供借鉴。
Abstract
The solar radiation is intermittent and unstable
and its dynamic instability affects the stable output of parabolic trough solar collector. Therefore
it is extremely important to study the dynamic characteristics of the solar heating process of parabolic trough solar collector. The dynamic simulation model of parabolic trough solar collector one-dimensional loop was constructed based on the Simscape environment in MATLAB/Simulink software. Based on the verified dynamic simulation model
the influence of mass flow and direct normal irradiance on the outlet temperature of the loop of parabolic trough solar collector was obtained. According to the obtained law
the dynamic regulation model of the loop of parabolic trough solar collector was constructed based on the proportional integral. The results show that the control strategy can make the outlet temperature of the loop reach the set temperature of 395 ℃ within 2 500 s when the direct normal irradiance increases suddenly
and maintain the output temperature fluctuation within -2 ℃ to 2 ℃ when the direct normal irradiance decreases suddenly. Based on the dynamic regulation strategy
the operation of the loop of parabolic trough solar collector in typical day was simulated. The results show that the regulation strategy can maintain the outlet temperature of the loop in the operation time and the thermal efficiency close to the ideal value. The study provides a new method for the construction of dynamic model of the parabolic trough solar collector
and the results can provide reference for the dynamic operation of the parabolic trough solar field.
关键词
Keywords
references
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