| 引用本文: | 王义凯,郑海然,乔健,尹项根,汤宸骁,欧洁.发电机定子绕组接地故障混合柔性消弧方法[J].电力自动化设备,2025,45(3): |
| WANG Yikai,ZHENG Hairan,QIAO Jian,YIN Xianggen,TANG Chenxiao,OU Jie.Hybrid flexible arc suppression method of generator stator winding grounding fault[J].Electric Power Automation Equipment,2025,45(3): |
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| 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。 |
| 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 |
| DOI：10.16081/j.epae.202501013 |
| 分类号:TM77 |
| 基金项目: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) |
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| Hybrid flexible arc suppression method of generator stator winding grounding fault |
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WANG Yikai1, ZHENG Hairan1, QIAO Jian1, YIN Xianggen2, TANG Chenxiao1, OU Jie1
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1.State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University(Baoding),Baoding 071000, China;2.State Key Laboratory of Advanced Electromagnetic Technology, Huazhong University of Science and Technology, Wuhan 430074, China
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| Abstract: |
| 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 combines 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 compensated by the active arc suppression device. Under the premise of reliably realizing grounding fault arc suppression, 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. |
| Key words: stator winding grounding fault hybrid flexible arc suppression dual-frequency active arc suppression arc suppression coil inverter power capacity |
