Power grid single-phase earth fault simulation load device

• Main Authors: WANG WENCAI, LI XIAOFENG, LIU XIANG, ZHAN BAIQING
• Format: Patent
• Language: Chinese; English
• Published: 28.06.2022
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The utility model relates to a power grid single-phase earth fault simulation load device, which comprises three phase selection contactors S1 to S3, one ends of the three phase selection contactors are respectively connected with a high-voltage three-phase inlet wire of an external active intervention type arc extinguishing device, and the other ends of the three phase selection contactors are connected together to form a contact J; the zero-sequence current sampling sensor is used for collecting the zero-sequence current at the contact J; the zero-sequence voltage sampling sensor is used for collecting the zero-sequence voltage at the contact J; one end of each analog grounding resistor is grounded, and the other end of each analog grounding resistor is jointly connected to a contact J through a high-voltage vacuum contactor; and the remote communication unit module comprises a power supply, a single-chip microcomputer controller and a remote communication interface, and the single-chip microcomputer contro