Method for realizing metal transverse differential protection of parallel multi-terminal direct-current power transmission system

The invention discloses a method for realizing metal transverse differential protection of a parallel multi-terminal direct-current power transmission system, and relates to the technical field of direct-current power transmission systems. A first convertor station, a second convertor station and a...

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Hauptverfasser: WANG YATAO, ZHANG QUN, LI YAFENG, CAI YONGLIANG, FAN XUEFENG, ZHANG NAN, WANG XIUCAI, XU PENGJIAN, WU QINGFAN, LI QINGJIANG, FAN ZIQIANG, JIN GONGLEI, MAO CHENGBO, ZHOU XIAOFENG, WANG CHENGJIU
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:The invention discloses a method for realizing metal transverse differential protection of a parallel multi-terminal direct-current power transmission system, and relates to the technical field of direct-current power transmission systems. A first convertor station, a second convertor station and a third convertor station are respectively provided with a metal loop longitudinal differential protection device, and the third convertor station is also provided with a metal loop fault line selection device; the third converter station also has a confluence bus area and is provided with a rapid isolation switch; and metal loop transverse differential protection devices are configured in the second converter station and the third converter station. When an inter-station communication fault occurs, the metal loop longitudinal differential protection device stops working, and the metal loop transverse differential protection device is put into work. The metal loop transverse differential device triggers a correspondi