Analysis on Dynamic Characteristics of Grid-Tied Energy Storage System with Droop Control

doi:10.7652/xjtuxb201812017

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Analysis on Dynamic Characteristics of Grid-Tied Energy Storage System with Droop Control

更新时间：2025-05-08

- Analysis on Dynamic Characteristics of Grid-Tied Energy Storage System with Droop Control
- Vol. 52, Issue 12, Pages: 112-120(2018)
- 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：
- DOI：10.7652/xjtuxb201812017
  CLC： TM464
- Online First：10 December 2018，
  
  Published：2018
- 稿件说明：
移动端阅览
Analysis on Dynamic Characteristics of Grid-Tied Energy Storage System with Droop Control[J]. 2018, 52(12): 112-120.
DOI：

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

Keywords

references

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