| 改进的光热复合压缩空气储能系统设计方案及其仿真分析 |
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| 引用本文： | 陈晓弢,王国华,司杨,梅生伟,薛小代,陈来军,张学林.改进的光热复合压缩空气储能系统设计方案及其仿真分析[J].电力自动化设备,2018,38(5). |
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| 作者姓名： | 陈晓弢 王国华 司杨 梅生伟 薛小代 陈来军 张学林 |
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| 作者单位： | 青海大学启迪新能源学院;清华大学电机系电力系统及发电设备控制和仿真国家重点实验室;江苏加怡热电有限公司 |
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| 基金项目： | 国家自然科学基金创新研究群体科学基金资助项目(51621065)；青海省科技成果转化专项(2017-GX-101)；青海省自然科学基金资助项目(2017-ZJ-932Q)；国家电网公司科技项目(SGRI-DL-71-15-006) |
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| 摘 要： | 在现有光热复合压缩空气储能(ST-CAES)实验系统的基础上,提出了一种ST-CAES的改进设计方案。通过引入回热系统和双脉宽调制(PWM)变流技术,实现了压缩热的回收利用与"柔性"并网。从影响STCAES膨胀发电系统性能的热力学参数、最大效率控制2个方面开展稳态与动态研究,分别建立了稳态热力学模型和膨胀发电机最大效率转速模型。搭建了ST-CAES并网发电系统的动态仿真平台,仿真分析表明,采用压缩空气先由回热系统预热、再经太阳能集热系统加热的技术路线可进一步提升系统的储能效率;采用双PWM变流器接入电网的控制策略,可在满足负荷功率需求的前提下,实现膨胀发电系统最大效率运行。
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| 关 键 词： | 光热复合压缩空气储能系统 储能效率 双PWM变流器 热力学分析 最大效率转速 最大效率控制 |
Improved design scheme of solar thermal compressed air energy storage system and its simulation analysis |
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| CHEN Xiaotao,WANG Guohu,SI Yang,MEI Shengwei,XUE Xiaodai,CHEN Laijun and ZHANG Xuelin.Improved design scheme of solar thermal compressed air energy storage system and its simulation analysis[J].Electric Power Automation Equipment,2018,38(5). |
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| Authors: | CHEN Xiaotao WANG Guohu SI Yang MEI Shengwei XUE Xiaodai CHEN Laijun and ZHANG Xuelin |
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| Affiliation: | School of Qidi(TUS) Renewable Energy, Qinghai University, Xining 810036, China; State Key Laboratory of Control and Simulation of Power Systems and Generation Equipment, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China,Jiangsu Jia Yi Thermoelectric Co.,Ltd.,Changzhou 213000, China,School of Qidi(TUS) Renewable Energy, Qinghai University, Xining 810036, China,School of Qidi(TUS) Renewable Energy, Qinghai University, Xining 810036, China; State Key Laboratory of Control and Simulation of Power Systems and Generation Equipment, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China,School of Qidi(TUS) Renewable Energy, Qinghai University, Xining 810036, China; State Key Laboratory of Control and Simulation of Power Systems and Generation Equipment, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China,School of Qidi(TUS) Renewable Energy, Qinghai University, Xining 810036, China; State Key Laboratory of Control and Simulation of Power Systems and Generation Equipment, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China and State Key Laboratory of Control and Simulation of Power Systems and Generation Equipment, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China |
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| Abstract: | An improved design scheme of ST-CAES(Solar Thermal Compressed Air Energy Storage) is proposed based on the existing ST-CAES experimental system. The reclamation of compressed heat and flexible grid-connection are realized by integrating regenerative system and dual-PWM(Pulse Width Modulation) convert technique. The steady-state and dynamic research is carried out from two aspects that influencing the performance of ST-CAES expansion generating system, i. e. the thermodynamic parameters and maximum efficiency control, and the steady-state thermodynamic model and the rotational speed model with maximum efficiency of expansion generator are established respectively. The dynamic simulation platform of ST-CAES grid-connected system is built, and analysis shows that the technical route, in which the compressed air is firstly preheated by the regenerative system and then heated by the solar collector system, can further improve the energy storage efficiency, and the grid-connection control strategy with dual-PWM converter can realize the maximum efficiency operation of the expansion generating system on the basis of meeting the load demand. |
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| Keywords: | ST-CAES energy storage efficiency dual-PWM converters thermodynamic analysis rotational speed with maximum efficiency maximum efficiency control |
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