基于定电压端协调控制的多端直流系统线间潮流控制器控制策略研究  

Research on control strategy of IDCPFC in MTDC system based on coordinated control of fixed voltage terminal

作　　者：李胜男 邓灿 荆龙[2] 何鑫 马遵 许珂玮 李雨腾 张怡然 LI Shengnan;DENG Can;JING Long;HE Xin;MA Zun;XU Kewei;LI Yuteng;ZHANG Yiran(Power Science Research Institute of Yunnan Power Grid Co.,Ltd.,Kunming 650217,China;Beijing Jiaotong University National Energy Active Distribution Grid Technology R&D Center,Beijing 100044,China)

机构地区：[1]云南电网有限责任公司电力科学研究院,云南昆明650217 [2]北京交通大学国家能源主动配电网技术研发中心,北京100044

出　　处：《供用电》2025年第4期12-18,47,共8页Distribution & Utilization

基　　金：国家重点研发计划项目(2023YFC3807000)。

摘　　要：在多端直流配电网中,通过加入直流潮流控制器增强系统的潮流控制能力,并提高供电可靠性。针对配电系统中直流潮流控制器应用范围的局限性和结构的复杂性,首先以三电平线间直流潮流控制器为研究对象,提出一种基于定电压端协调控制的多端直流系统线间潮流控制器控制策略,通过控制定电压端换流器与线间潮流控制器的协同配合,在确保系统稳定运行的同时,有效提高控制的自由度并减小设备的体积。然后根据系统等效电路和功率方程,对潮流控制器和定电压端换流器的控制策略进行具体设计,解决潮流调节能力受限的问题。最后,搭建基于RT-LAB的实时模型在环仿真平台,验证所提控制策略。协调控制方案可有效应对宽范围潮流调节,同时确保系统运行的稳定性和灵活性。In the multi-terminal DC power distribution network,adding DC power flow controller to enhance the power flow control ability of the system,and the power supply reliability is improved.Aiming at the limitation of the application range and the complexity of the structure of the current DC power flow controller in the distribution system,this paper takes the three-level DC power flow controller as the research object,and proposes a control strategy of the multi-terminal DC power flow controller based on the coordinated control of the fixed voltage terminal.By controlling the coordination of the constant voltage converter and the interline power flow controller,the degree of control freedom and the volume of the equipment are effectively improved while ensuring the stable operation of the system.Then,according to the system equivalent circuit and power equation,the control strategy of the power flow controller and the constant voltage converter is designed to solve the problem of limited power flow regulation ability.Finally,the RT-LAB real-time simulation model is built to verify the proposed control strategy.The coordinated control scheme is used to deal with a wide range of power flow regulation to ensure the stability and flexibility of the system operation.

关 键 词：多端直流配电系统 线间直流潮流控制器 潮流调度 控制策略 协调控制 

分 类 号：TM72[电气工程—电力系统及自动化]