发电机定子绕组接地故障混合柔性消弧方法  

Hybrid flexible arc suppression method of generator stator winding grounding fault

作　　者：王义凯 郑海然 乔健 尹项根[2] 汤宸骁 欧洁 WANG Yikai;ZHENG Hairan;QIAO Jian;YIN Xianggen;TANG Chenxiao;OU Jie(State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources,North China Electric Power University(Baoding),Baoding 071000,China;State Key Laboratory of Advanced Electromagnetic Technology,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]华北电力大学(保定)新能源电力系统全国重点实验室,河北保定071000 [2]华中科技大学强电磁技术全国重点实验室,湖北武汉430074

出　　处：《电力自动化设备》2025年第3期109-114,123,共7页Electric Power Automation Equipment

基　　金：中央高校基本科研业务费专项资金资助项目(2024MS098);国家自然科学基金资助项目(52407100)。

摘　　要：有源消弧方法能够实现发电机定子接地故障可靠消弧,但需要大容量逆变电源,体积大且造价高,工程应用受限。为降低逆变电源容量,提出发电机定子绕组接地故障混合柔性消弧方法,将双频有源消弧方法与消弧线圈接地方式相结合,利用消弧线圈补偿接地故障电流中大部分的基波分量,剩余的基波分量和谐波分量通过有源消弧装置实现补偿。在可靠实现接地故障消弧的前提下,该方法可极大地减小逆变电源的容量,具有较高的经济性和实用性。仿真和动模试验结果验证了所提方法的有效性。The active arc suppression method can realize reliable arc suppression of generator stator grounding fault,but it requires a large-capacity inverter power supply,which is large in size and high in cost,and the engineering application is limited.In order to reduce the capacity of the inverter power supply,a hybrid flexible arc suppression method for generator stator winding grounding fault is proposed,which com-bines the dual-frequency active arc suppression method with the grounding mode of the arc suppression coil,and uses the arc suppression coil to compensate for most of the fundamental components in the grounding fault current,and the remaining fundamental components and harmonic components are compen-sated by the active arc suppression device.Under the premise of reliably realizing grounding fault arc sup-pression,this method can greatly reduce the capacity of the inverter power supply,and has high economy and practicability.Simulation and dynamic model test results verify the effectiveness of the proposed method.

关 键 词：定子绕组接地故障 混合柔性消弧 双频有源消弧 消弧线圈 逆变电源容量 

分 类 号：TM77[电气工程—电力系统及自动化]