| 引用本文: | 刘华志,覃露,张祥宇,李永刚.基于虚拟轴耦合的虚拟同步发电机混合储能惯量-阻尼协调控制策略[J].电力自动化设备,2023,43(9):103-111. |
| LIU Huazhi,QIN Lu,ZHANG Xiangyu,LI Yonggang.Inertia-damping coordinated control strategy of VSG hybrid energy storage based on virtual shaft coupling[J].Electric Power Automation Equipment,2023,43(9):103-111. |
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| 摘要: |
| 将虚拟同步运行的混合储能装置与同步发电机通过虚拟轴耦合，可实现暂态能量的高效传递，提高可再生能源发电系统的暂态稳定性。建立了混合储能装置静态能量与同步发电机动能之间的转换关系。对混合储能装置中的虚拟惯量进行分析，以获得同步运行能力。为了从同步发电机中传递更多的暂态能量，在混合储能装置中引入新的虚拟轴，并分析混合储能装置与虚拟轴耦合对系统暂态稳定性的影响。利用哈密顿能量函数，推导混合储能装置暂态能量高效传递的必要条件，进而提出了混合储能装置虚拟轴的控制策略，以协调虚拟惯量和功率振荡抑制功能。算例仿真结果表明，所提控制策略能明显改善系统频率和功角的暂态稳定性。 |
| 关键词: 虚拟同步发电机 混合储能装置 虚拟惯量 暂态能量 虚拟轴控制 协调控制 |
| DOI：10.16081/j.epae.202302021 |
| 分类号: |
| 基金项目:国家自然科学基金资助项目(52277100) |
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| Inertia-damping coordinated control strategy of VSG hybrid energy storage based on virtual shaft coupling |
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LIU Huazhi1, QIN Lu2, ZHANG Xiangyu3, LI Yonggang3
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1.State Grid Tianjin Electric Power Research Institute, Tianjin 300220, China;2.Chengxi Power Supply Branch of State Grid Tianjin Electric Power Company, Tianjin 300110, China;3.State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Baoding 071003, China
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| Abstract: |
| Coupling the virtual synchronous hybrid energy storage devices(HESDs) with a synchronous generator(SG) through a virtual shaft can realize the efficient transfer of transient energy and improve the transient stability of the renewable energy power generation system. The conversion relationship between static energy of HESDs and kinetic energy of SG is established. The virtual inertia of HESDs is analyzed to obtain the synchronous operation capability. In order to transfer more transient energy from the SG, a new virtual shaft is introduced into the HESDs, and the influence of the coupling between the HESDs and the virtual shaft on the system transient stability is analyzed. Based on the Hamiltonian energy function, the necessary conditions for the efficient transfer of transient energy in the HESDs are deduced, and then the virtual shaft control strategy of HESDs is proposed to coordinate the virtual inertia and power oscillation suppression functions. The simulative results show that the proposed control strategy can obviously improve the transient stability of the system frequency and power angle. |
| Key words: virtual synchronous generator hybrid energy storage device virtual inertia transient energy virtual shaft control coordinated control |
