储能科学与技术 ›› 2018, Vol. 7 ›› Issue (4): 674-681.doi: 10.12028/j.issn.2095-4239.2018.0066

• 研究及进展 • 上一篇    下一篇

基于Modelica语言的塔式太阳能光热电站的熔盐回路建模与仿真

王楚航1,2, 徐博1, 周翀1, 邹杨1, 余笑寒1   

  1. 1. 中国科学院上海应用物理研究所, 上海 201800;
    2. 中国科学院大学, 北京 100049
  • 收稿日期:2018-04-20 修回日期:2018-06-07 出版日期:2018-07-01 发布日期:2018-07-01
  • 通讯作者: 邹杨,E-mail:zouyang@sinap.ac.cn
  • 作者简介:王楚航(1992-),男,硕士研究生,研究领域为熔盐储能及回路瞬态分析,E-mail:348068114@qq.com
  • 基金资助:
    中国科学院战略性先导科技专项（XDA0201002）、中国科学院前沿科学重点研究项目（QYZDY-SSW-JSC016）。

Modelling and simulation of a molten salt loop of a solar tower power plant in a Modelica environment

WANG Chuhang1,2, XU Bo1, ZHOU Chong1, ZOU Yang1, YU Xiaohan1   

  1. 1. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2018-04-20 Revised:2018-06-07 Online:2018-07-01 Published:2018-07-01

PDF

314

摘要： CSP（concentrated solar power）系统通过聚焦太阳光进行光热发电，主要工作介质包括导热油及熔盐。由于太阳能的不连续性，为了提供更稳定的能量输出，发展出了采用熔盐为储热工质进行蓄热的系统，该系统同时也提供了与其它能源系统耦合的可行性。该系统的熔盐回路主要由3个部分构成，分别为集热器、高低温储热罐和蒸汽发生器。通过对50 MW塔式太阳能的热发电系统熔盐回路的各个组件的模型进行建立，设计一套与之相应的控制系统，并针对不同工况下，各个组件及整个系统的响应进行了模拟，得出熔盐回路的瞬态响应特性。由于其熔盐回路与熔盐反应堆具有一定的相似性，本研究也可为熔盐反应堆核能综合利用中储能系统提供参考。

关键词: 熔盐回路, 储热, 瞬态分析, PID控制

Abstract: Concentrated solar power systems provide a high temperature heat source by concentrating solar radiation for electricity generation. To ensure a stable output, plants with molten salt-based energy storage system have been developed. This study aims to understand the dynamic response of the molten salt loop of a 50MW power plant by modelling and simulation. Such a loop includes a receiver, a hot and a cold storage tanks and a steam generator (heat exchanger). The work was done with the Modelica programming language and Dymola under different working conditions. The simulation results showed that the receiver could reach steady state in 30 s. However, it took~5.5 hours for the storage tank to reach the steady state. The response of the heat exchanger was found to also be very quick with a steady-state reached within~1500 s to reach a completely steady state.

Key words: molten salt loop, thermal energy storage, dynamic simulation, PID control

中图分类号: