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湖南大学电气与信息工程学院,湖南省长沙市 410082
李杨(1991—),男,博士研究生,主要研究方向:先进电能质量优化控制与变换器系统稳定性建模分析。E-mail:mydygyx@163.com
帅智康(1982—),男,通信作者,教授,博士生导师,主要研究方向:先进电能质量优化控制、电力电子技术及应用、微网稳定性分析及控制。E-mail:shuaizhikang-001@163.com
方俊彬(1989—),男,博士研究生,主要研究方向:直流配电网控制与稳定性分析。E-mail:1014511552@qq.com
收稿日期:2020-08-26,
修回日期:2021-01-01,
网络出版日期:2021-03-25,
纸质出版日期:2021-06-10
移动端阅览
李杨,帅智康,方俊彬等.基于阻抗测量的多逆变器系统稳定性校验方法[J].电力系统自动化,2021,45(11):95-101.
LI Yang,SHUAI Zhikang,FANG Junbin,et al.Stability Check Method for Multi-inverter System Based on Impedance Measurement[J].Automation of Electric Power Systems,2021,45(11):95-101.
李杨,帅智康,方俊彬等.基于阻抗测量的多逆变器系统稳定性校验方法[J].电力系统自动化,2021,45(11):95-101. DOI: 10.7500/AEPS20200826002.
LI Yang,SHUAI Zhikang,FANG Junbin,et al.Stability Check Method for Multi-inverter System Based on Impedance Measurement[J].Automation of Electric Power Systems,2021,45(11):95-101. DOI: 10.7500/AEPS20200826002.
随着接入电网的电力电子逆变器的增多,逆变器与电网交互导致的稳定性问题越来越突出。逆变器在接入电网之前有必要进行稳定性校验,以确保逆变器接入电网之后系统能安全稳定运行。为此,文中提出一种基于阻抗测量的多逆变器系统稳定性校验方法,用于多个逆变器接入电网前的稳定性校验。同时,还提出利用主动式阻抗灵敏度分析方法识别造成系统失稳的主导逆变器,为确定并网方案提供依据。应用案例研究表明所提方法适用于多逆变器系统稳定性校验分析,仿真和实验验证了所提方法的有效性。
With more and more power electronic inverters connecting to the power grid
the stability problems caused by the interaction between the inverters and the power grid become increasingly prominent. Therefore
it is necessary to check the stability of the inverter before grid-connection
to ensure the safe and stable operation of the system after the inverter is connected to the power grid. Therefore
this paper proposes a stability check method for the multi-inverter system based on impedance measurement
to check the stability of multiple inverters before grid-connection. This paper also proposes an active impedance sensitivity analysis method for the identification of the dominant inverters that cause system instability
to provide the guidance for the determination of the grid-connection plan. The application case study shows that the proposed method is suitable for the stability check analysis of the multi-inverter system
and the effectiveness of the proposed method is verified by the simulation and the experiment.
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