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Analysis method of DC line protection performance based on time-space characteristics |
LI Jianhui1, WANG Bo2, LIU Lei1, LIU Shiming3 |
1. State Grid Tangshan Power Supply Company,Tangshan,Hebei 063000; 2. NR Electric Co.,Ltd,Nanjing 211100; 3. Key Laboratory of Intelligent Power Dispatching and Control of Ministry of Education (Shandong University),Ji’nan 250061 |
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Abstract Since the traditional DC line protection analysis method has the defect that it cannot fully show the characteristics of DC lines protection. Based on the in-depth analysis of the existing protection schemes, this paper proposes a protection performance analysis method based on time-space characteristics (TSC). The action time of protection under different fault distances and different fault transition resistances is comprehensively considered, aiming to understand the performance of different protection schemes intuitively, clearly and comprehensively. The PSCAD/EMTDC simulation platform is used to analyze the non-unit protection, unit protection and protection system of the DC line. It is verified that this method has great advantages in reflecting the action characteristics of different DC line protections and provides direction for the optimization of DC line protection.
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Received: 08 April 2022
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Cite this article: |
LI Jianhui,WANG Bo,LIU Lei等. Analysis method of DC line protection performance based on time-space characteristics[J]. Electrical Engineering, 2022, 23(8): 41-45.
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URL: |
http://dqjs.cesmedia.cn/EN/Y2022/V23/I8/41
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