运用下垂控制的并网储能系统惯量阻尼特性分析

修连成 1; 熊连松 2; 3; 康志亮 1; 宋汉梁 2

doi:10.7652/xjtuxb201812017

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运用下垂控制的并网储能系统惯量阻尼特性分析

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- 运用下垂控制的并网储能系统惯量阻尼特性分析
- Analysis on Dynamic Characteristics of Grid-Tied Energy Storage System with Droop Control
- 西安交通大学学报 2018年52卷第12期页码：112-120
- 作者机构：
  
  四川农业大学机电学院,成都,611130
- 作者简介：
- 基金信息：
  
  : 2018-05-03。作者简介: 修连成(1992-),男,硕士生;熊连松(通信作者),男,副研究员。基金项目: 国家自然科学基金资助项目(51707091);南京工程学院高层次引进人才科研启动基金资助项目(YKJ201613);江苏省配电网智能技术与装备协同创新中心开放基金资助项目(XTCX201711)
- DOI：10.7652/xjtuxb201812017
  中图分类号： TM464
- 网络首发：2018-12-10，
  
  纸质出版：2018
- 稿件说明：
移动端阅览
修连成 1, 熊连松 2, 3, 等. 运用下垂控制的并网储能系统惯量阻尼特性分析[J]. 西安交通大学学报, 2018,52(12):112-120.

Analysis on Dynamic Characteristics of Grid-Tied Energy Storage System with Droop Control[J]. 2018, 52(12): 112-120.
修连成 1, 熊连松 2, 3, 等. 运用下垂控制的并网储能系统惯量阻尼特性分析[J]. 西安交通大学学报, 2018,52(12):112-120. DOI： 10.7652/xjtuxb201812017.

Analysis on Dynamic Characteristics of Grid-Tied Energy Storage System with Droop Control[J]. 2018, 52(12): 112-120. DOI： 10.7652/xjtuxb201812017.

摘要

为了揭示并网型储能系统的惯量与阻尼特性

缓解分布式能源接入导致的电网稳定性降低的问题

通过构建并网型储能系统的直流电压时间尺度的动态模型

利用静止同步发电机模型

分析了影响并网储能系统惯性效应、阻尼水平以及同步能力的内在机制、主要参数及其影响规律。同时

揭示了下垂控制模式的并网储能系统从物理本质上对应了原动机的下垂控制特征。研究结果表明:DC/DC变换器使用频率下垂控制策略、并网逆变器使用电压电流双闭环控制策略

通过调节频率控制环和恒压控制环的PI参数

即可等效改变储能系统的惯性效应、阻尼水平以及同步能力。研究结果不但可以用于设计有效的并网储能系统控制策略

而且可以辅助提升分布式发电系统的惯性效应、阻尼水平以及同步能力。

Abstract

This approach reveals the inertia and damping characteristics of grid-tied energy storage systems for alleviating the reduction of grid stability caused by distributed energy. Focusing on the dynamic of the DC voltage control time-scale

the dynamic model of the grid-tied energy storage system with improved droop control is established

and the static synchronous generator model is used to analyze the influencing factors of inertial level

damping effect and synchronization ability. It is found that the physical nature of the energy storage system is similar to the droop characteristic of the prime mover. The results show that when the DC/DC converter uses the frequency droop control strategy and the grid-tied inverter uses the voltage and current double closed-loop control strategy

adjusting the PI parameters can equivalently change the inertial and damping characteristics of the system. This study may be helpful to design an effective control of grid-tied energy storage system

which enhances the inertia and damping capacity of power grid and improves the stable operation of distributed power system.

关键词

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references

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