发电技术 ›› 2024, Vol. 45 ›› Issue (2): 341-352.DOI: 10.12096/j.2096-4528.pgt.22156
杨捷1, 孙哲1, 苏辛一1, 鲁刚2, 元博2
收稿日期:
2023-09-13
出版日期:
2024-04-30
发布日期:
2024-04-29
作者简介:
基金资助:
Jie YANG1, Zhe SUN1, Xinyi SU1, Gang LU2, Bo YUAN2
Received:
2023-09-13
Published:
2024-04-30
Online:
2024-04-29
Supported by:
摘要:
随着新型电力系统建设持续推进,直流微电网将成为配电网的重要组成部分。直流微电网接入交流负载时,振荡型功率会进入直流系统,影响分布式储能系统功率分配。为此,给出了储能系统功率分配综合原则,并以此提出一种无互联通信网络的功率分配方法。该方法以荷电状态作为“信息载体”,各储能单元仅需本地荷电状态(state of charge,SOC)信息即可完成自适应调整,在实现SOC均衡控制的同时,还能够让振荡型功率合理分配。此外,从等效输出阻抗的角度出发,对不同控制算法的分配效果展开了详细的分析讨论,表明了所提控制算法可以满足综合原则的要求。最后,通过实验验证了所提分布式储能控制策略的有效性。
中图分类号:
杨捷, 孙哲, 苏辛一, 鲁刚, 元博. 考虑振荡型功率的直流微电网储能系统无互联通信网络的多目标功率分配方法[J]. 发电技术, 2024, 45(2): 341-352.
Jie YANG, Zhe SUN, Xinyi SU, Gang LU, Bo YUAN. A Wireless Multi-Objective Power Sharing Method for Energy Storage System in DC Micro-Grid Considering Oscillatory-Type Power[J]. Power Generation Technology, 2024, 45(2): 341-352.
类型 | 参数 | 数值 |
---|---|---|
DC/DC变换器 | 输入电压ub/V | 25.6 |
滤波电感值Lb/μH | 210 | |
输出滤波电容Cob/μF | 960 | |
线路阻抗Rlineb/mΩ | 100 | |
DC/AC变换器 | 直流负载阻抗Rdc/Ω | 22.5 |
交流滤波电感Lf/mH | 2 | |
交流滤波电容Cf/μF | 3.3 | |
交流负载阻抗Rac/Ω | 45 | |
控制 | 直流母线额定电压urated/V | 60 |
输出交流电压有效值/V | 34 | |
传统下垂系数 | 0.1 | |
关系曲线斜率 | 100 | |
二次调节系数 | 6 | |
速率因子μ | 4 | |
开关频率f/kHz | 20 |
表1 直流微电网实验平台参数
Tab. 1 Parameters of DC micro-grid experiment platform
类型 | 参数 | 数值 |
---|---|---|
DC/DC变换器 | 输入电压ub/V | 25.6 |
滤波电感值Lb/μH | 210 | |
输出滤波电容Cob/μF | 960 | |
线路阻抗Rlineb/mΩ | 100 | |
DC/AC变换器 | 直流负载阻抗Rdc/Ω | 22.5 |
交流滤波电感Lf/mH | 2 | |
交流滤波电容Cf/μF | 3.3 | |
交流负载阻抗Rac/Ω | 45 | |
控制 | 直流母线额定电压urated/V | 60 |
输出交流电压有效值/V | 34 | |
传统下垂系数 | 0.1 | |
关系曲线斜率 | 100 | |
二次调节系数 | 6 | |
速率因子μ | 4 | |
开关频率f/kHz | 20 |
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