1.浙江大学电气工程学院,浙江省杭州市 310027
2.运达能源科技集团股份有限公司,浙江省杭州市 311199
陆凯东(2001—),男,博士研究生,主要研究方向:新能源发电并网技术。E-mail:12310029@zju.edu.cn
年珩(1978—),男,通信作者,教授,博士生导师,主要研究方向:新能源发电运行与控制技术。E-mail:nianheng@zju.edu.cn
顾振宇(2000—),男,硕士研究生,主要研究方向:新能源发电并网技术。E-mail:22310180@zju.edu.cn
收稿:2024-12-20,
修回:2025-04-15,
网络首发:2025-09-02,
纸质出版:2026-02-10
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陆凯东,年珩,顾振宇等.兼顾交流功率与直流电压控制的VSC暂态稳定分析与参数优化[J].电力系统自动化,2026,50(3):156-166.
LU Kaidong,NIAN Heng,GU Zhenyu,et al.Transient Stability Analysis and Parameter Optimization of Voltage Source Converter Considering AC Power and DC Voltage Control[J].Automation of Electric Power Systems,2026,50(3):156-166.
陆凯东,年珩,顾振宇等.兼顾交流功率与直流电压控制的VSC暂态稳定分析与参数优化[J].电力系统自动化,2026,50(3):156-166. DOI: 10.7500/AEPS20241220006.
LU Kaidong,NIAN Heng,GU Zhenyu,et al.Transient Stability Analysis and Parameter Optimization of Voltage Source Converter Considering AC Power and DC Voltage Control[J].Automation of Electric Power Systems,2026,50(3):156-166. DOI: 10.7500/AEPS20241220006.
随着新能源和直流负载的快速增长,基于电压源型变流器(VSC)的交直流混合配电网得到了广泛研究。然而,随着分布式新能源和直流负载的增加,交直流混合配电网的直流侧和交流侧均面临功率波动问题,给电力系统的稳定运行带来了挑战。为此,文中提出了具备交流功率控制与直流电压控制的VSC混合控制方法,建立了兼顾暂态过程快速响应与较小功角超调量的VSC混合控制暂态特性数学模型。通过局部线性化方法,将复杂的功角稳定参数整定问题转化为根轨迹图特征根的选择问题,实现了VSC混合控制的参数优化设计。与现有方法相比,所提方法在系统功率波动时具有更好的稳定性,降低了系统功角失稳的风险。最后,通过仿真与实验验证了所提方法的有效性。
With the rapid growth of renewable energy sources and DC loads
AC/DC hybrid distribution networks based on voltage source converters (VSCs) have been widely studied. However
with the increase of distributed renewable energy and DC loads
both the DC and AC sides of the AC/DC hybrid distribution network are facing power fluctuation problems
which pose challenges to the stable operation of the power system. To this end
a hybrid control method for VSCs is proposed
which incorporates AC power control (APC) and DC voltage control (DVC). A mathematical model of the transient characteristics of the VSCs with hybrid control is established
which considers the fast response during the transient process and the small overshoot of the power angle. Through the local linearization method
the complex problem of power angle stabilization parameter tuning is transformed into selecting the characteristic root from the root locus diagram
thereby achieving the optimization design of VSC parameters with hybrid control. Compared with existing methods
the proposed method has better stability during system power fluctuations and reduces the risk of system power angle instability. Finally
the effectiveness of the proposed method is verified through simulation and experiments.
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