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- W2051257655 abstract "Along with the high-speed development of national economy, subway becomes the best solution to overcome the traffic jam in big or middle cities in China. However, the domestic research on DC feeder protection in traction power supply system for subway is later than abroad. The control and protect system were important in DC power distribution system. In traction power supply system it is becoming more difficult to distinguish fault current which is through high impedance and the current when train starts. The principle of current increment protection and current slope-change protection is discussed in this paper, and a new method named after DC admittance protection, which based on the method mentioned above, is put forward. It is shown that the criterion of DC admittance slope-change protection and DC admittance increment protection in detail, and it is also shown that the method of how to set the setting value. The experiment results show that the DC admittance protection can detect the short circuit fault more selectively. The microcomputer based feeder proposed protection scheme is developed. (6 pages)" @default.
- W2051257655 created "2016-06-24" @default.
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- W2051257655 date "2006-01-01" @default.
- W2051257655 modified "2023-09-27" @default.
- W2051257655 title "Research on the control and protect system in dc power distribution system" @default.
- W2051257655 doi "https://doi.org/10.1049/cp:20061741" @default.
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