低压多台区柔性互联系统不对称故障穿越控制策略研究

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关键词：柔性互联；低压台区；不对称故障；故障穿越；控制策略中图分类号：TM71 文献标志码：A 文章编号：2095-8188（2025）08-0001-08DOI：10.16628/j.cnki.2095-8188.2025.08.001

Research on Asymmetric Fault Ride-Through Control Strategy of Low Voltage Distribution Areas Flexible Interconnection System

LI Jiawei， MIAO Xiren （College of Electrical Engineering and Automation，Fuzhou University，Fuzhou 35O116，China）

Abstract：The low voltage distribution areas flexible interconnection system should be equipped with AC fault ride-through capability to ensure thereliable operation of the system under the short-circuit fault of the AC port. Therefore，anasymmetric faultride-through strategybasedonlowvoltage distributionareas flexible interconection systemis proposed.Firstly，the topological structureand control strategyof lowvoltage distributionareas flexible interconnectionsystemare introduced.Secondly，theinfluenceof grid-sidevoltage imbalanceontheflexible system is analyzed，andasequenceseparation control method is presented.Then，a fault ride-through control strategy considering port currentcontroland system activepower balanceisproposed.Finally，theefectivenessof the proposed strategyisverified by simulation.

Key words：flexible interconnection；low voltage disteribution area；asymmetric fault；fault ridethrough；control strategy

0 引言

在“双碳”目标和相关能源技术的驱动下，分布式电源将大规模接入低压配电台区中，高比例分布式电源的接入将会引发线路末端电压越限、负载三相不平衡及台区反向重过载等一系列运行问题[1]，严重影响配电网经济安全运行。（剩余8335字）