光储一体化并网发电系统的惯量阻尼机理分析

吴永斌; 王素娥; 熊连松; 张东辉; 许昭

doi:10.7500/AEPS20190308009

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光储一体化并网发电系统的惯量阻尼机理分析

研制与开发 | 更新时间：2020-07-14

- 光储一体化并网发电系统的惯量阻尼机理分析
- Analysis on Inertia and Damping Mechanism of Grid-connected Power Generation System Integrated with Photovoltaic and Energy Storage Systems
- 电力系统自动化-方正平台 2020年第6期页码：129-137
- 作者机构：
  
  1. 陕西科技大学电气与控制工程学院，陕西省西安市 710021
  2. 南京工程学院自动化学院，江苏省南京市 211167
  3. 香港理工大学电机工程系，香港 999077
  4. 湖南工业大学电气与信息工程学院，湖南省株洲市 412007
- 作者简介：
  
  吴永斌(1995—)，男，硕士研究生，主要研究方向：可再生能源并网发电系统的惯量阻尼与同步特性分析。E-mail：wuyongbin@sust.edu.cn
  王素娥(1973—)，女，通信作者，硕士，副教授，硕士生导师，主要研究方向：微电网与电能质量控制策略。E-mail：wangsue@sust.edu.cn
  熊连松(1986—)，男，博士，副教授，硕士生导师，主要研究方向：逆变器动态分析与控制、可再生能源并网发电系统。E-mail：xiongliansong@163.com
- 基金信息：
  
  国家自然科学基金资助项目(51707091);陕西省工业科技攻关项目(2015GY038)
- DOI：10.7500/AEPS20190308009
  中图分类号：
- 收稿日期：2019-03-08，
  
  修回日期：2019-07-18，
  
  网络出版日期：2020-02-03，
  
  纸质出版日期：2020-03-25
- 稿件说明：
移动端阅览
吴永斌,王素娥,熊连松等.光储一体化并网发电系统的惯量阻尼机理分析[J].电力系统自动化,2020,44(06):129-137.

WU Yongbin,WANG Su’e,XIONG Liansong,et al.Analysis on Inertia and Damping Mechanism of Grid-connected Power Generation System Integrated with Photovoltaic and Energy Storage Systems[J].Automation of Electric Power Systems,2020,44(06):129-137.
吴永斌,王素娥,熊连松等.光储一体化并网发电系统的惯量阻尼机理分析[J].电力系统自动化,2020,44(06):129-137. DOI： 10.7500/AEPS20190308009.

WU Yongbin,WANG Su’e,XIONG Liansong,et al.Analysis on Inertia and Damping Mechanism of Grid-connected Power Generation System Integrated with Photovoltaic and Energy Storage Systems[J].Automation of Electric Power Systems,2020,44(06):129-137. DOI： 10.7500/AEPS20190308009.

摘要

以光储一体化并网发电系统为研究对象，利用多时间尺度建模的思想，聚焦于影响系统频率动态特性的主要时间尺度——直流电压时间尺度，建立了用于系统惯量阻尼特性分析的直流电压时间尺度动态模型。在此模型的基础上，利用电气转矩分析法从物理机制层面上分析了影响系统惯量效应、阻尼能力以及同步特性的主要因素及其作用规律。研究结果表明：系统的动态特性由其控制参数、结构参数以及稳态工作点参数共同决定。直流电压母线控制环中的比例控制器、积分控制器分别影响系统的惯性效应和同步特性；储能装置中的频率下垂控制主要影响系统的阻尼能力；工作在最大功率点跟踪模式的光伏变流器则无法影响系统的动态特性。此外，系统的动态特性还受到线路阻抗、直流母线电容等结构参数以及系统交/直流母线电压等级、稳态运行功率（功角）等稳态工作点参数的共同影响。仿真和实验结果验证了上述分析结论的正确性。

Abstract

The grid-connected power generation system integrated with photovoltaic (PV) and energy storage systems (ESSs) is taken as the research object

and multiple time scales are used in the modeling ideas. Focusing on the main time scale affecting the dynamic characteristics of system frequency—the DC voltage time scale

this paper develops a dynamic model of DC voltage time scale for the analysis of the system inertia and damping characteristics. On the basis of this model

the electric torque analysis method is used to analyze the main factors and their action laws on the inertia effect

damping capacity and synchronization characteristics from the physical mechanism level. The research results show that the dynamic characteristics of the system are determined by its control parameters

structural parameters and steady-state operation point parameters. The inertia effect and synchronization characteristics of the system are respectively affected by the proportional controller and integral controller in the DC bus voltage control loop. The damping capacity of the system is mainly affected by the frequency droop control in the energy storage device. The system dynamic characteristics will not be affected by the PV converter operating in the maximum power point tracking (MPPT) mode. In addition

the system dynamic characteristics are also affected by the structural parameters (such as line impedance and DC bus capacitance)

the steady-state operation point parameters (such as the AC/DC bus voltage level of the system) and the steady-state operation power (power angle). Finally

the correctness of the above analysis is verified by the simulation and experiment results.

关键词

Keywords

references

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