| 超导直流输电技术发展现状与趋势 |
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| 引用本文： | 邱清泉,张志丰,张国民,肖立业.超导直流输电技术发展现状与趋势[J].南方电网技术,2015,9(9):11-16. |
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| 作者姓名： | 邱清泉 张志丰 张国民 肖立业 |
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| 作者单位： | 北京四方继保自动化股份有限公司, 北京100085,深圳供电局有限公司，广东 深圳 518048,北京四方继保自动化股份有限公司, 北京100085 |
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| 基金项目： | 基金项目：国家高技术研究发展计划(863计划)（2013AA050104） |
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| 摘 要： | 本文结合深圳多端柔性直流配电示范工程，研究了柔性直流配电网的保护方案及故障定位方法。根据实际工程的电路拓扑结构，明确了保护区域的划分方法。同时结合MMC换流器及直流配网的故障特性，提出了各保护区域的保护配置方案。着重介绍了直流线路单极故障、双极故障的保护配置方法，并通过PSCAD/EMTDC仿真验证了保护配置策略的正确性和直流线路故障定位的可行性。最后介绍了保护装置的实现形式，并通过保护与控制之间的相互配合，形成了自适应的柔直配网保护系统。
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| 关 键 词： | 直流配电网 MMC换流器 保护配置 故障定位 |
Development Status and Trend of Superconducting DC Power Transmission Technology |
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| QIU Qingquan,ZHANG Zhifeng,ZHANG Guomin and XIAO Liye.Development Status and Trend of Superconducting DC Power Transmission Technology[J].Southern Power System Technology,2015,9(9):11-16. |
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| Authors: | QIU Qingquan ZHANG Zhifeng ZHANG Guomin and XIAO Liye |
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| Affiliation: | Key Lab of Applied Superconductivity, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China,Key Lab of Applied Superconductivity, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China,Key Lab of Applied Superconductivity, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China and Key Lab of Applied Superconductivity, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China |
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| Abstract: | With the lauching of Shenzhen pilot project on MMC based DC distribution network, the protection scheme and fault locating method are studied in this paper.Firstly, based on the topology structure of the actual project, the division method for the protection area of DC distribution network is defined.Then, an overall protection configuration strategy is presented considering MMC and the system's fault characteristic.Further protection for different DC line faults, including pole to ground fault, pole to pole fault and line disconnection fault, is described in detail.The correctness of the protection configuration strategy and the feasibility of the fault location method are validated through PSCAD/EMTDC simulation.Finally, the implementation of protection device is introduced, together with coordination between protection and control, thus an adaptive protection system for MMC based DC distribution network is established. |
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| Keywords: | DC distribution network MMC based converter protection configuration fault locating |
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