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1.华南理工大学电力学院,广东省广州市 510640
2.广东省绿色能源技术重点实验室(华南理工大学),广东省广州市 510640
谢敏(1978—),女,博士,副教授,硕士生导师,主要研究方向:电力系统优化规划与运行控制。E-mail:minxie@scut.edu.cn
张世平(1999—),男,通信作者,硕士研究生,主要研究方向:配电系统优化运行与控制。E-mail:1632522154@qq.com
李弋升(1998—),男,硕士研究生,主要研究方向:电力系统优化运行控制与电力市场。E-mail:david007907353249@qq.com
收稿:2022-09-27,
修回:2023-01-20,
网络出版:2023-03-02,
纸质出版:2023-03-25
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谢敏,张世平,李弋升等.基于多模式柔性互联的交直流低压配电网优化调度[J].电力系统自动化,2023,47(6):79-89.
XIE Min,ZHANG Shiping,LI Yisheng,et al.Optimal Dispatch of AC/DC Hybrid Low-voltage Distribution Network Based on Multi-mode Flexible Interconnection[J].Automation of Electric Power Systems,2023,47(6):79-89.
谢敏,张世平,李弋升等.基于多模式柔性互联的交直流低压配电网优化调度[J].电力系统自动化,2023,47(6):79-89. DOI: 10.7500/AEPS20220927002.
XIE Min,ZHANG Shiping,LI Yisheng,et al.Optimal Dispatch of AC/DC Hybrid Low-voltage Distribution Network Based on Multi-mode Flexible Interconnection[J].Automation of Electric Power Systems,2023,47(6):79-89. DOI: 10.7500/AEPS20220927002.
利用柔性互联装置对配电网进行改造,可实现源-网-荷-储柔性高效互动,解决分布式电源大量接入带来的负载不均衡和电能质量问题。针对低压台区柔性互联,提出了基于多模式柔性互联的交直流低压配电网优化调度模型。首先,考虑背靠背和交直流混联的低压柔性互联装置组网方式,建立柔性互联装置和光-储-充-荷元件的低压模型。然后,基于低压模型,以多层级负载不均衡度、网损、运营成本为优化目标,提出了基于多模式柔性互联的交直流低压配电网优化调度模型,并采用凸优化理论对模型进行凸化和线性化,调用Gurobi求解器得到模型的全局最优解。最后,通过交直流混合低压配电网算例验证了所提模型和求解算法的有效性。
The transformation for the distribution network by the flexible interconnection device can realize the flexible and efficient interaction between source
grid
load and storage
and solve the problems of load imbalance and power quality caused by the large number of distributed generators. Aiming at the flexible interconnection in low-voltage transformer area
an optimal dispatch model of AC/DC hybrid low-voltage distribution network based on multi-mode flexible interconnection is proposed. First
considering the networking forms of back-to-back and hybrid AC/DC low-voltage flexible interconnection devices
the low-voltage model of the flexible interconnection device and the PV-storage-charge-load element is established. Then
based on the low-voltage model
taking multi-level load imbalance degree
network loss and operation cost as optimization objectives
an optimal dispatch model of AC/DC hybrid low-voltage distribution network based on multi-mode flexible interconnection is proposed. Convex optimization theory is also used to convexize and linearize the model
and Gurobi solver is called to obtain the global optimal solution of the model. Finally
the effectiveness of the proposed model and the solution algorithm is verified by the case of AC/DC hybrid low-voltage distribution network.
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