| 引用本文: | 刘若平,李银红,肖浩,陈朝晖,罗强.MMC-HVDC直流极保护对启动过程故障的适应性研究[J].电力自动化设备,2019,39(7): |
| LIU Ruoping,LI Yinhong,XIAO Hao,CHEN Zhaohui,LUO Qiang.Research on adaptability of DC pole protection to fault occurred during start-up process for MMC-HVDC[J].Electric Power Automation Equipment,2019,39(7): |
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| MMC-HVDC直流极保护对启动过程故障的适应性研究 |
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刘若平1,2, 李银红1,2, 肖浩1,2, 陈朝晖3, 罗强1,2
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1.华中科技大学 电气与电子工程学院 强电磁工程与新技术国家重点实验室，湖北 武汉 430074;2.华中科技大学 电气与电子工程学院 电力安全与高效湖北省重点实验室，湖北 武汉 430074;3.中国南方电网电力调度控制中心，广东 广州 510663
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| 摘要: |
| 目前国内外对基于模块化多电平换流器的高压直流输电(MMC-HVDC)直流极保护原理与保护定值的研究均针对系统正常运行方式，鲜有针对启动过程的适应性分析。对MMC-HVDC系统启动动态过程进行了理论描述，详细分析了启动过程发生直流双极短路与单极接地故障时的故障特性。针对MMC-HVDC系统典型直流极保护，研究了启动过程故障与正常运行阶段故障时保护特征量的差异以及典型保护对启动过程故障的适应性。基于MMC-HVDC的详细电磁暂态模型，仿真启动过程和正常运行阶段发生双极短路与单极接地故障，验证了启动过程故障特性分析及典型保护对启动过程适应性分析的正确性，并对保护整定计算提出了新的建议。 |
| 关键词: MMC-HVDC 启动过程 直流侧故障 故障特性 直流极保护 |
| DOI：10.16081/j.issn.1006-6047.2019.07.013 |
| 分类号:TM46;TM721.1 |
| 基金项目: |
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| Research on adaptability of DC pole protection to fault occurred during start-up process for MMC-HVDC |
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LIU Ruoping1,2, LI Yinhong1,2, XIAO Hao1,2, CHEN Zhaohui3, LUO Qiang1,2
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1.State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;2.Hubei Electric Power Security and High Efficiency Key Laboratory, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;3.CSG Power Dispatching & Control Centre, Guangzhou 510663, China
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| Abstract: |
| At present, the research on the principle and settings of DC pole protection for MMC-HVDC(Modular Multilevel Converter based High Voltage Direct Current) is concerned about the normal operating conditions of the system, there is little adaptability analysis of DC pole protection during start-up process. The dynamic start-up process of MMC-HVDC is described theoretically, and the characteristics of DC pole-to-pole short circuit fault and monopolar grounding fault are analyzed in detail. The difference of related quantities of typical DC pole protection between fault occurred during start-up process and normal operating stage is analyzed, and the adaptability of the typical protection to fault occurred during start-up process is also studied. Based on detailed electromagnetic transient model of MMC-HVDC system, the DC pole-to-pole short circuit fault and monopolar grounding fault occurred during both start-up process and normal operating stage are simulated, which verifies the analysis on fault characteristics during start-up process and the adaptability of typical protection to start-up process. New suggestions are put forward for the protection setting calculation. |
| Key words: MMC-HVDC start-up process DC fault fault characteristics DC pole protection |
