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An Improved Scheme of Active Power Differential Protection for Transmission Line

机译：输电线路有功差动保护的改进方案

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摘要

In this paper, an improved scheme of active power differential protection for transmission line is proposed. The criteria for active power differential protection are optimally designed and described in detail. Restraint characteristic criteria and additional auxiliary criteria are used to solve the "voltage dead zone" issues of active power differential protection. Simulation results show that the proposed protection scheme can accurately identify the fault area without dead zone when metallic ground fault occurs near the protection units. In addition, active power differential protection has the advantage of low data synchronization requirements, and it is verified in this study.
机译：提出了一种改进的输电线路有功功率差动保护方案。优化设计和详细描述了有功功率差动保护的标准。使用约束特性标准和其他辅助标准来解决有功功率差动保护的“电压死区”问题。仿真结果表明，该保护方案能在保护单元附近发生金属接地故障时，准确识别出无死区的故障区域。另外，有功功率差动保护具有数据同步要求低的优点，并且在本研究中得到了验证。

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