基于附加阻尼的微网改进下垂控制方法

ZHANG Ye

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基于附加阻尼的微网改进下垂控制方法

更新时间：2025-08-13

- 基于附加阻尼的微网改进下垂控制方法
- Automation of Electric Power Systems Vol. 39, Issue 18, Pages: 25-30(2015)
- 作者机构：
  
  智能电网教育部重点实验室, 天津大学,天津市,300072
- 作者简介：
- 基金信息：
- DOI：
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- Published：2015
- 稿件说明：
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ZHANG Ye. [J]. Automation of electric power systems, 2015, 39(18): 25-30.
DOI：

ZHANG Ye. [J]. Automation of electric power systems, 2015, 39(18): 25-30. DOI：

摘要

采用传统有功频率、无功电压幅值下垂控制时

若下垂系数选取不合理

逆变器输出功率会出现持续振荡

当微网离网运行时

逆变器输出功率的振荡会导致微网系统频率出现波动

严重时会使整个系统出现功角稳定性问题。文中基于储能逆变器动态频率特性的概念

根据其产生正阻尼作用的相位条件和幅值条件

提出了基于附加阻尼的改进下垂控制方法。该方法可以在不影响系统稳态频率和逆变器输出功率的前提下

有效地增加系统的阻尼

从而抑制逆变器输出功率振荡

提高系统的稳定性。最后通过PSCAD仿真

验证了所提控制策略的有效性。

Abstract

When the traditional active power versus frequency and reactive power versus voltage magnitude droop control is applied

if the droop coefficients are irrational

the output power of the inverter will keep oscillating. When the microgrid operates in the islanding mode

the microgrid frequency will fluctuate because of the output power oscillation of the energy storage inverter. When serious

there will be the power angle stability problem. Based on the concept of dynamic frequency-power characteristic

this paper proposes an improved droop control method according to phase condition and magnitude condition of positive damping. The improved droop control can effectively increase system damping to suppress the oscillation of output power of the inverter and improve system stability without affecting the steady state frequency and output power of the inverter. Finally

PSCAD simulation results have validated the feasibility of the proposed method. This work is supported by National High Technology Research and Development Program of China (863 Program) (No. 2012AA050217).

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微网系统不平衡电压补偿控制策略

考虑逆变型分布式电源时滞的孤岛微网小信号稳定分析

稀疏通信下分布式电源微增率一致性加速算法

采用功率坐标变换的微网并联逆变器控制方法

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