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1.电力传输与功率变换控制教育部重点实验室(上海交通大学),上海市 200240
2.内蒙古工业大学电力学院,内蒙古自治区呼和浩特市 010051
3.广东电网有限责任公司佛山供电局,广东省佛山市 528000
贾雅君(1973—),男,博士研究生,主要研究方向:新能源智能电网优化、配电网自动化及设备状态监测。E-mail:jiayajun@sjtu.edu.cn
李涛(1998—),男,硕士研究生,主要研究方向:低压配电网柔性互联控制技术。E-mail:2821677436@qq.com
席东民(1974—),男,博士,教授,主要研究方向:分布式发电与微网控制、超导材料工程特性和火电厂热工过程控制。E-mail:13947181828@163.com
金之俭(1965—),男,通信作者,博士,教授,博士生导师,主要研究方向:高电压绝缘设备状态监测、超导材料及超导应用。E-mail:zjjin@sjtu.edu.cn
收稿:2024-11-06,
修回:2025-03-04,
网络出版:2025-04-24,
纸质出版:2025-07-10
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贾雅君,李涛,席东民等.“交-直-储”无通信协同的农村低压配电网电压越限治理策略[J].电力系统自动化,2025,49(13):195-207.
JIA Yajun,LI Tao,XI Dongmin,et al.Voltage Limit Violation Mitigation Strategy for Rural Low-voltage Distribution Network Based on Communicationless “AC-DC-Energy Storage” Coordination[J].Automation of Electric Power Systems,2025,49(13):195-207.
贾雅君,李涛,席东民等.“交-直-储”无通信协同的农村低压配电网电压越限治理策略[J].电力系统自动化,2025,49(13):195-207. DOI: 10.7500/AEPS20241106005.
JIA Yajun,LI Tao,XI Dongmin,et al.Voltage Limit Violation Mitigation Strategy for Rural Low-voltage Distribution Network Based on Communicationless “AC-DC-Energy Storage” Coordination[J].Automation of Electric Power Systems,2025,49(13):195-207. DOI: 10.7500/AEPS20241106005.
高比例、规模化的分布式电源(DG)接入,会引起低压交流配电网馈线末端电压越限问题,影响系统安全稳定运行。多端直流配电网可实现所连交流配电线路之间的直流互联,结合直流配电网进行所连交流馈线之间的灵活互动,对DG波动功率的联合消纳,可改善低压配电网末端电压质量,提升DG渗透率。针对这一应用场景,文中提出一种“交-直-储”无通信协同的农村低压配电网电压越限治理策略。一方面,通过构建直流电压与各交流馈线末端电压、储能间的映射关系,实现了“交-直-储”无通信协同调控;另一方面,基于裕度控制,通过直流电压和荷电状态(SOC)等变量设置合理的动作阈值,限定了直流互联、储能、DG出力限制等多种调压方案的优先级,避免了馈线以及储能间不必要的功率交互。最后,通过所搭建的交直流混合配电网仿真模型,验证了所提控制策略的可行性和有效性。
With the integration of high proportional and large-scale distributed generators (DGs)
the problem of voltage limit violation at the end of feeder in the low-voltage AC distribution network will affect the safe and stable operation of the system. The multi-terminal DC distribution network can realize the DC interconnection between connected AC distribution lines. By combining with the DC distribution network to flexibly interact between connected AC feeders
and jointly accommodating DG fluctuating power
the voltage quality at the end of the low-voltage distribution network can be improved and the DG penetration rate can be enhanced. In view of this application scenario
a voltage limit violation mitigation strategy for rural low-voltage distribution network based on communicationless “AC-DC-energy storage” coordination is proposed. On one hand
by constructing the mapping relationship between the DC voltage and the terminal voltage of each AC feeder
as well as the state of charge (SOC) of the energy storage
the communicationless “AC-DC-energy storage” coordinated control is realized. On the other hand
based on the margin control
a reasonable action threshold is set through variables such as DC voltage and SOC
which limits the priority of various voltage regulation schemes such as DC interconnection
energy storage
and DG output limitation
avoiding unnecessary power interaction between feeders and energy storage. Finally
the feasibility and effectiveness of the proposed control strategy are verified through the simulation model of the constructed AC/DC hybrid distribution network.
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