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山东理工大学电气与电子工程学院,山东省淄博市 255049
李喜东(1996—),男,硕士研究生,主要研究方向:柔性直流配电系统优化控制。E-mail:sdutlxd@163.com
彭克(1983—),男,通信作者,博士,副教授,主要研究方向:交直流配电网与综合能源系统运行控制。E-mail:pengke@sdut.edu.cn
姚广增(1996—),男,硕士研究生,主要研究方向:柔性直流配电系统稳定控制。E-mail:guangzengyao@163.com
收稿日期:2020-06-28,
修回日期:2020-11-05,
网络出版日期:2020-12-31,
纸质出版日期:2021-06-10
移动端阅览
李喜东,彭克,姚广增等.基于H∞回路成形法的柔性直流配电系统鲁棒稳定控制[J].电力系统自动化,2021,45(11):77-85.
LI Xidong,PENG Ke,YAO Guangzeng,et al.Robust Stability Control of Flexible DC Distribution System Based on H∞ Loop Forming Method[J].Automation of Electric Power Systems,2021,45(11):77-85.
李喜东,彭克,姚广增等.基于H∞回路成形法的柔性直流配电系统鲁棒稳定控制[J].电力系统自动化,2021,45(11):77-85. DOI: 10.7500/AEPS20200628005.
LI Xidong,PENG Ke,YAO Guangzeng,et al.Robust Stability Control of Flexible DC Distribution System Based on H∞ Loop Forming Method[J].Automation of Electric Power Systems,2021,45(11):77-85. DOI: 10.7500/AEPS20200628005.
柔性直流配电系统是未来配电系统的一个重要发展方向,可极大地提高城市配电系统的电能质量、可靠性与运行效率。分布式光伏电源间歇性波动、直流负荷随机扰动、滤波电感和电阻参数摄动、下垂系数摄动等不确定性因素易导致直流配电系统发生不稳定现象。文中提出了一种基于
H
∞
回路成形法及规范互质分解技术的鲁棒稳定控制方法。在仿真软件中搭建了双端柔性直流配电系统模型,并对比分析了引入鲁棒控制器前后直流电压的稳定性差异。结果表明,所设计的鲁棒控制器可以有效处理系统的不确定性和抑制系统的低频振荡,验证了所提方法的可行性与有效性。
Flexible DC distribution system is an important development trend of future distribution system
which can greatly improve the power quality
reliability and operation efficiency of urban distribution system. Some uncertain factors
such as intermittent fluctuation of distributed photovoltaic power supply
random disturbance of DC loads
perturbation of filter inductance and resistance parameters
and perturbation of droop coefficient
can easily lead to the instability of DC distribution system. A robust stability control method based on
H
∞
loop forming method and standard mutual quality decomposition technology is proposed. The simulation model of a double-terminal flexible DC distribution system is built
and the stability differences of DC voltage before and after the introduction of the robust controller are compared and analyzed. The results show that the designed robust controller can effectively deal with the uncertainties and suppress the low-frequency oscillations of the system. Also
the feasibility and effectiveness of the proposed method are validated.
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