Fault detection in redundant grounding systems

• Main Authors: DE STEFANO ROBERT A, CONELL JONATHAN O
• Format: Patent
• Language: Chinese; English
• Published: 16.07.2024
• Subjects: ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; TRANSPORTING; VEHICLES IN GENERAL

A method of detecting a ground loss of an electrical component includes monitoring a ground circuit including a first ground line connected to the electrical component and a second ground line connected to the electrical component, where the monitoring includes measuring a current through each of the first ground line and the second ground line, and measuring a voltage through each of the first ground line and the second ground line. The method further includes calculating a first resistance of the first ground and a second resistance of the second ground based on the measured current and the measured voltage, estimating a difference between the first resistance and the second resistance, and comparing the estimated difference to a threshold difference, and based on the estimated difference being greater than the threshold difference, detecting a ground fault, and outputting an indication of the ground fault. 一种检测电气部件的接地损失的方法包括监控接地电路，该接地电路包括连接到电气部件的第一接地线和连接到电气部件的第二接地线，其中监控包括测量通过第一接地线和第二接地线中的每个的电流，以及测量通过第一接地线和