基于构网型储能的新能源微电网电压动态控制性能分析与优化

doi:10.11930/j.issn.1004-9649.202411028

摘要/Abstract

摘要：

配置构网型储能设备可有效抑制新能源微电网中负荷投切、分布式新能源出力波动引起的电压动态越限。现有研究大多基于单机构网型储能经感性线路并网模型，忽略了系统有功无功耦合及微电网线路阻感比的影响，仅能得到无功控制参数是电压动态控制主导因素的结论。因此，构建含构网型储能、分布式新能源和微电网网络的系统电压动态模型，利用系统电压动态模型的闭环响应矩阵最小奇异值与电压动态控制性能映射关系，分析了不同阻感比下，构网型储能控制参数配置对电压动态控制性能的影响。提出了面向电压动态控制性能提升的构网型储能参数设计方法，并通过仿真系统进行验证，所提方法揭示了不同阻感比下构网型储能有功无功控制参数之间的协同与制约关系。

关键词: 新能源微电网, 动态建模, 动态控制

Abstract:

The configuration of grid-forming energy storage devices can effectively suppress the voltage dynamic overvoltage caused by load switching and distributed new energy output fluctuation in new energy microgrid. However, the existing research is mostly based on the single-machine grid-forming energy storage sensitive line access model, ignoring the influence of the system active-active coupling and the ratio of the microgrid line resistance to inductance, and only the conclusion that the reactive control parameter is the dominant factor of the voltage dynamic control can be obtained Therefore, this paper constructs a system voltage dynamic model containing grid-forming energy storage, distributed new energy and microgrid network, and uses the mapping relationship between the minimum singular value of closed-loop response matrix of the system voltage dynamic model and the voltage dynamic control performance to analyze the influence of the configuration of the grid-forming energy storage control parameters on the dynamic control performance under different resistance-inductance ratios. A parameter design method for the grid-forming energy storage with the goal of enhancing the voltage dynamic control performance is proposed verified by a simulation system. The proposed method reveals the synergy and constraint relationship between the active and reactive control parameters of the grid-forming energy storage under different resistance-induct ratios.

Key words: renewable energy microgrid, dynamic modelling, dynamics control technology

张宸宇, 喻建瑜, 史明明, 刘瑞煌. 基于构网型储能的新能源微电网电压动态控制性能分析与优化[J]. 中国电力, 2025, 58(9): 115-123.

ZHANG Chenyu, YU Jianyu, SHI Mingming, LIU Ruihuang. Analysis and Optimization of Voltage Dynamic Control Performance of Renewable Energy Microgrid based on Grid-Forming Energy Storage[J]. Electric Power, 2025, 58(9): 115-123.

导出引用管理器 EndNote|Ris|BibTeX

链接本文: https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202411028

https://www.electricpower.com.cn/CN/Y2025/V58/I9/115

图/表 10

图 1 基于构网型储能的新能源微电网典型形态

Fig.1 Typical renewable energy microgrid based on grid-forming energy storage

图 2 含构网型储能的微电网系统电压动态建模

Fig.2 Voltage dynamic modeling in renewable energy microgrids with grid-forming energy storage

图 3 基于最小奇异值计算的系统电压动态控制性能分析方法及参数设计步骤

Fig.3 Performance analysis method and parameter design steps for system voltage dynamic control based on minimum singular value calculation

图 4 构网型储能惯量系数Jp和刚度系数Kc对于系统闭环响应矩阵最小奇异值的影响

Fig.4 Influence of grid-forming energy storage inertia coefficient Jp and stiffness coefficient Kc on the minimum singular value of the closed-loop response matrix of the system

图 5 仿真系统拓扑

Fig.5 Simulation system topology

图 6 微网线路阻感比R/X=0.1，构网型储能的Kc和Jp参数配置对系统电压波动的抑制效果

Fig.6 Effect of Kc and Jp parameter configuration on suppression for voltage fluctuations with R/X=0.1

图 7 微网线路阻感比R/X=0.5，构网型储能的Kc和Jp参数配置对系统电压波动的抑制效果

Fig.7 Effect of Kc and Jp parameter configuration on suppression for voltage fluctuations with R/X=0.5

图 8 微网线路阻感比R/X=1.0，构网型储能的Kc和Jp参数配置对系统电压波动的抑制效果

Fig.8 Effect of Kc and Jp parameter configuration on suppression for voltage fluctuations with R/X=1.0

图 9 有功扰动下所提参数优化设计方法对电压动态控制性能的提升效果

Fig.9 The dynamic control performance of voltage under active power disturbances with the proposed parameter design method

图 10 无功扰动下所提参数优化设计方法对电压动态控制性能的提升效果

Fig.10 The dynamic control performance of voltage under reactive power disturbances with the proposed parameter design method

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