Oscillatory Stability Constrained Optimal Power Flow Algorithm Based on Reactive Power Optimization for DFIG Integrated Power System

Shenghu LI; Yitian JIANG

doi:10.7500/AEPS20190912001

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Oscillatory Stability Constrained Optimal Power Flow Algorithm Based on Reactive Power Optimization for DFIG Integrated Power System

Basic Research | 更新时间：2025-06-16

- Oscillatory Stability Constrained Optimal Power Flow Algorithm Based on Reactive Power Optimization for DFIG Integrated Power System
- Automation of Electric Power Systems Vol. 44, Issue 15, Pages: 70-76(2020)
- 作者机构：
  
  合肥工业大学电气与自动化工程学院，安徽省合肥市 230009
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China
- DOI：10.7500/AEPS20190912001
  CLC：
- Received：12 September 2019，
  
  Revised：2020-02-14，
  
  Published Online：27 April 2020，
  
  Published：10 August 2020
- 稿件说明：
移动端阅览
李生虎,蒋以天.基于无功优化的DFIG并网电力系统OSC-OPF算法[J].电力系统自动化,2020,44(15):70-76.

LI Shenghu,JIANG Yitian.Oscillatory Stability Constrained Optimal Power Flow Algorithm Based on Reactive Power Optimization for DFIG Integrated Power System[J].Automation of Electric Power Systems,2020,44(15):70-76.
李生虎,蒋以天.基于无功优化的DFIG并网电力系统OSC-OPF算法[J].电力系统自动化,2020,44(15):70-76. DOI： 10.7500/AEPS20190912001.

LI Shenghu,JIANG Yitian.Oscillatory Stability Constrained Optimal Power Flow Algorithm Based on Reactive Power Optimization for DFIG Integrated Power System[J].Automation of Electric Power Systems,2020,44(15):70-76. DOI： 10.7500/AEPS20190912001.

摘要

双馈感应发电机（DFIG）与同步发电机（SG）间动态交互，影响系统阻尼振荡能力。由于系统状态矩阵由SG和DFIG参数决定，推导振荡模式对受控参数灵敏度的难度增加。针对含DFIG的电力系统，为量化无功调节对阻尼振荡的控制效果，提出阻尼比对SG无功出力灵敏度的解析表达。引入最小阻尼比约束，提出基于无功优化的振荡稳定约束最优潮流（OSC-OPF）模型。根据OSC-OPF拉格朗日乘子，提出稳定约束下网损对SG无功容量的灵敏度。仿真结果证实，所提模型有助于降低风电系统网损并改善其阻尼振荡能力。

Abstract

The dynamic interaction of synchronous generators (SGs) and doubly-fed induction generators (DFIGs) changes the damping oscillation capability of the system. The system state matrix is decided by the parameters of the SGs and the DFIGs

which increases the difficulty of deriving the sensitivity of the oscillation modes to the control parameters. For the power system with the DFIGs

to quantify the control effect of reactive power adjustment on damping oscillation

the analytical expression of the sensitivity of the damping ratio to the reactive power output of the SGs is proposed. By introducing the constraint of the minimum damping ratio

the oscillatory stability constrained optimal power flow (OSC-OPF) model based on reactive power optimization is proposed. According to the Lagrange multiplier of the OSC-OPF

the sensitivity of the power loss to the reactive power capacity of the SGs under the stability constraint is proposed. The simulation results show that the proposed model helps to reduce the power loss and improve the damping capability of the wind power system.

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Keywords

references

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