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- W4386981429 abstract "Abstract The high‐voltage direct current (HVDC) transmission based on modular multilevel converter shows the weak feed characteristic of limited fault current amplitude when connected to the traditional AC power grid, which leads to the risk of sensitivity reduction or even failure of the traditional pilot protection. Here, a modular multi‐level converter (MMC)‐HVDC AC side transmission line protection scheme based on positive sequence fault component current ratio is proposed. The positive sequence fault component current of the MMC‐HVDC side is calculated by using the positive sequence fault component current of the power grid side, and the fault is identified through the significant difference between the ratio of the positive sequence fault component current of the MMC‐HVDC side and the actual positive sequence fault component current of the MMC‐HVDC side in the case of internal and external faults. This method has the advantages of simple principle, low requirement for synchronous data, not affected by capacitive current and strong resistance to high resistance. The simulation results show that the algorithm can correctly partition internal and external faults, and is not affected by fault location, fault type and operation mode of converter station, and has high sensitivity and reliability." @default.
- W4386981429 created "2023-09-24" @default.
- W4386981429 creator A5030750004 @default.
- W4386981429 creator A5036201456 @default.
- W4386981429 date "2023-09-22" @default.
- W4386981429 modified "2023-10-09" @default.
- W4386981429 title "MMC‐HVDC AC side line protection based on positive sequence fault component current ratio" @default.
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- W4386981429 doi "https://doi.org/10.1049/gtd2.12979" @default.
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