Distribution network 5G longitudinal differential protection method and equipment

• Main Authors: YUE ZHIHUI, LUO LAIFENG, PENG WENJIAN, LIU ZHENGXUE, ZHAN JIEWEN, WANG QIANGANG, WU WENJU, SUN ZHIJIA, NIE WEIQI, FAN DONGKAI, ZHOU JUNFENG, CHEN YUANSHENG
• Format: Patent
• Language: Chinese; English
• Published: 26.04.2024
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERATION; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention provides a 5G longitudinal differential protection method and equipment for a distribution network. The method comprises the steps of sending a differential protection starting message and a re-sending message of differential protection to an opposite-side protection device through a 5G network in response to the detected current abnormity of the side, so as to enable the opposite-side protection device to execute longitudinal differential protection related actions. The re-sending message at least comprises a current sampling value before the time point when the current abnormity of the side is detected. According to the technical scheme provided by the invention, the 5G network has the characteristics of high speed and low time delay, so that the differential protection starting message and the re-sending message can be quickly transmitted, and the reliability of the system is improved. And the current value in the re-sent message comprises the current value in the preset time period before th