舰船综合电力系统的多混合储能协同控制方法

李灏1 张彦1 付立军1 朱琬璐1

(1.海军工程大学舰船综合电力技术国防科技重点实验室, 湖北武汉 430033)

【摘要】[目的]针对舰船综合电力系统中的分布式混合储能系统(HESS),为实现多个HESS之间的相对一致性,以及单个HESS内部超级电容储能与电池储能之间的合理功率分配,提出一种基于储能装置荷电状态(SOC)的多HESS协同控制方法。[方法]单个HESS的控制外环将采用下垂控制方法来实现功率的初始分配,而内环稳压控制则采用主从控制模式,以减少各HESS之间的通信需求。鉴于超级电容动态响应快,但容量偏小、电池储能容量较大的特点,在单个HESS内部,基于超级电容的SOC值计算电池的输出功率;在多个HESS之间,基于内部电池的SOC值计算每个HESS的充/放电总功率。[结果]通过PSCAD/EMTDC仿真,在舰船高能负载投切和随机波动工况下,验证了多HESS的放电响应特性。在充、放电模式变换工况下,母线电压波动处于2.5%的偏移允许范围之内;超级电容SOC控制在上限和下限之间,且基本维持了2个超级电容单元SOC的一致性;在充、放电模式下,锂电池均仅在超级电容受限时工作。[结论]在不依赖高、低通滤波单元的前提下,多混合储能协同控制方法具有较好的母线电压稳定能力和较强的鲁棒性。

【关键词】 综合电力系统; 多混合储能系统; 荷电状态; 功率分配;

【DOI】

【基金资助】 国家自然科学基金资助项目(51807198)

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This Article

ISSN:1673-3185

CN:42-1755/TJ

Vol 15, No. 06, Pages 12-21

December 2020

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Article Outline

摘要

  • 0 引言
  • 1 系统建模
  • 2 基于电池SOC的多HESS协同功率分配
  • 3 仿真分析
  • 4 结语
  • 参考文献