| 引用本文: | 侯俊杰,宋国兵,徐瑞东,等.交直流混合电网故障耦合特性分析与继电保护研究[J].电力系统保护与控制,2021,49(14):176-187. |
| HOU Junjie,SONG Guobing,XU Ruidong,et al.Fault coupling characteristic analysis and relay protection research on an AC/DC hybrid power grid[J].Power System Protection and Control,2021,49(14):176-187 |
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| 摘要: |
| 国家自然科学基金联合基金重点支持项目(U1766209)；国家电网公司总部科技项目(52094020006U) |
| 关键词: 交直流混合电网 故障耦合特性 继电保护 控保协同 |
| DOI：DOI: 10.19783/j.cnki.pspc.201222 |
| 分类号: |
| 基金项目:国家自然科学基金联合基金重点支持项目(U1766209)；国家电网公司总部科技项目(52094020006U) |
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| Fault coupling characteristic analysis and relay protection research on an AC/DC hybrid power grid |
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HOU Junjie, SONG Guobing, XU Ruidong, GUO Bing, YIN Lishuai, LÜ Jiangtao
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(School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China)
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| Abstract: |
| As the amount of AC/DC hybridization increases in power systems, the difficulty of grid operation has increased significantly. Therefore, ensuring the safe operation of AC/DC hybrid grid has become a major and urgent issue for China. The converter station is the hub of an AC/DC hybrid grid. Different from the traditional synchronous machine power supply, its fault coupling characteristics are complicated. In this paper, starting from the response and transfer characteristics of the converter station to the disturbance, this paper explains the coupling characteristics and generation mechanism first. This provides a theoretical basis for the fault analysis and protection research of the AC/DC hybrid grid. Furthermore, it evaluates the adaptability of AC and DC line protection and studies new principles of relay protection in different fault periods. Finally, it puts forward an idea for control and protection coordination, and discusses further research directions.
This work is supported by the Joint Fund Key Project of National Natural Science Foundation of China (No. U1766209) and the Science and Technology Project of the Headquarters of State Grid Corporation of China (No. 52094020006U). |
| Key words: AC/DC hybrid grid fault coupling characteristics relay protection control and protection coordination |
