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首页> 外文会议>IEEE International Symposium on Power Electronics for Distributed Generation Systems >Analysis of Inertia and Damping Characteristics of Grid-connected Photovoltaic Power Generation System Based on Droop Control
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Analysis of Inertia and Damping Characteristics of Grid-connected Photovoltaic Power Generation System Based on Droop Control

机译：基于下垂控制的并网光伏发电系统的惯性和阻尼特性分析

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The grid-connected photovoltaic power generation system (GPPGS) with high proportion of renewable energy has the ability to load balance. A strategy is proposed for GPPGS based on droop control. The electric torque analysis method (ETAM) is used to establish mathematical model of the system with DC voltage timescale (DVT) and analyze the influence law of inertia, damping and synchronization characteristics from the physical mechanism perspective. The research finds that the equivalent inertia, damping and synchronization parameters of the system are determined by the control parameters, structural parameters and steady-state operating point parameters. Changing the control parameters is the simplest and most flexible way to influence the inertia damping and synchronization ability of the system. The inertia characteristics of the system are greatly influenced by the control parameter Kp and enhanced with the increase of Kp. The damping characteristics of the system are obviously affected by the control parameter Dp and weakened with the increase of Dp. The synchronization effect of the system is only controlled by the parameter Ki and enhanced with the increase of Ki. The effectiveness and correctness of the analysis conclusion are verified by simulation.
机译：具有高比例可再生能源的并网光伏发电系统（GPPGS）具有负载平衡的能力。提出了一种基于下垂控制的GPPGS策略。使用电动转矩分析方法（ETAM）建立具有直流电压时标（DVT）的系统的数学模型，并从物理机构的角度分析惯性，阻尼和同步特性的影响规律。研究发现，系统的等效惯性，阻尼和同步参数由控制参数，结构参数和稳态工作点参数确定。更改控制参数是影响系统惯性阻尼和同步能力的最简单，最灵活的方法。系统的惯性特性在很大程度上受控制参数K的影响 p 并随着钾的增加而增强 p 。系统的阻尼特性明显受控制参数D的影响 p 随着D的增加而减弱 p 。系统的同步效果仅由参数K控制 i 并随着钾的增加而增强 i 。通过仿真验证了分析结论的有效性和正确性。

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