Low-current grounding system single-phase grounding fault low-voltage simulation test device

• Main Authors: YUAN YOUKUO, CAO WENHUA, WEN YANHUA, GE XIN, ZHAO CHENYANG, LI HONGQUAN, XUE MING, ZHUANG DING, DING HAO, ZHANG WEI
• Format: Patent
• Language: Chinese; English
• Published: 16.08.2024
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The utility model belongs to the technical field of electric power, and relates to a low-current grounding system single-phase grounding fault low-voltage simulation test device, which comprises an electrical isolation mechanism, the electrical isolation mechanism comprises three single-phase transformers, the power supply side of the electrical isolation mechanism is of an angle joint structure, and the wire outlet side of the electrical isolation mechanism is of a star joint structure. A common point of the star connection structure is used as a three-phase neutral point which is connected with an analog ground return terminal through an arc suppression coil of a contactor J1-and a grounding resistor of a contactor J2-. An A-phase outgoing line, a B-phase outgoing line and a C-phase outgoing line of the electrical isolation mechanism are respectively connected with a capacitor switching disturbance simulation test branch line, an internal fault line simulation test branch line, an external fault line simula