储能科学与技术 ›› 2019, Vol. 8 ›› Issue (4): 689-695.doi: 10.12028/j.issn.2095-4239.2019.0060

• 微电网与分布式储能技术专刊 • 上一篇    下一篇

基于风电消纳电热储能装置热流固耦合研究

张雪平1, 齐凤升1, 邢作霞2, 单建标1, 李宝宽1   

  1. 1 东北大学冶金学院, 辽宁 沈阳 110819;
    2 沈阳工业大学, 辽宁 沈阳 110870
  • 收稿日期:2019-04-17 修回日期:2019-05-07 出版日期:2019-07-01 发布日期:2019-07-01
  • 通讯作者: 齐凤升,副教授,研究方向为储能传热模型理论研究,E-mail:qifs@smm.neu.edu.cn。
  • 作者简介:张雪平(1994-),女,硕士研究生,E-mail:1273946038@qq.com
  • 基金资助:
    沈阳市双百重大科技研发项目（Y17-0-007）。

Thermal-fluid-solid coupling of electric heat storage device based on wind power absorption

ZHANG Xueping1, QI Fengsheng1, XING Zuoxia2, SHAN Jianbiao1, Li Baokuan1   

  1. 1 School of Metallurgy, Northeastern University, Shenyang 110819, Liaoning, China;
    2 Shenyang University of Technology, Shenyang 110870, Liaoning, China
  • Received:2019-04-17 Revised:2019-05-07 Online:2019-07-01 Published:2019-07-01

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摘要： 电网调峰能力不足，弃风问题严重，已成为我国风力发电规模进一步扩大的瓶颈。通过配置蓄热装置参与风电调峰，改变传统“以热定电”的约束模式，是解决我国大量弃风问题的一个趋势。提高电热蓄能装置效率及优化蓄热装置分布对于实现有效调峰具有重要意义。本文针对固体电蓄热装置内流动、传热、应力等现象，建立了热-流-固多场三维耦合传热数学模型，采用流-固耦合传热模型将难以确定的热流边界转化为系统内部边界，分析固体电蓄热装置温度场及应力场分布，并对比三种不同孔隙率、电热丝排布方式对蓄热装置温度分布均匀性及热膨胀量的影响。研究结果对提高固体电蓄热装置的效率以及电网调峰具有一定的参考价值。

关键词: 风电, 电蓄热, 流固耦合, 温度均匀性, 数值模拟

Abstract: The inadequate peak shaving capacity of power grid and the serious problem of wind abandonment restrict the expansion of wind power generation scale in China. It is a trend to solve a large number of wind abandonment problems in China by allocating heat storage to participate in wind power peak shaving and changing the traditional restriction mode of "fxing electricity by heat". It is of great signifcance to study the heat transfer process in the electro thermal energy storage device for improving the effciency of the electro thermal energy storage device. For the phenomena of flow, heat transfer and stress in solid electric regenerator, a three-dimensional coupled heat transfer mathematical model of heat-fluid-solid is established. The fluid-solid coupled heat transfer model is used to transform the heat flow boundary which is diffcult to determine into the internal boundary of the system. The distribution of temperature feld and stress feld in solid electric regenerator is analyzed, and the effects of three different porosity and wire arrangement on temperature distribution uniformity and deformation of regenerator were compared The research results have certain reference value for improving the effciency of solid electric heat storage device and peak shaving of power grid.

Key words: wind power, electric heat storage, fluid-solid coupling, temperature uniformity, numerical simulation

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