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第二接地线中的每个的电压。该方法还包括基于测量的电流和测量的电压计算第一地线的第一电阻和第二地线的第二电阻,估计第一电阻和第二电阻之间的差,并将估计的差与阈值差进行比较,并且基于估计的差大于阈值差,检测接地故障,并输出接地故障的指示。
Fault detection in redundant grounding systems
冗余接地系统中的故障检测
2024-07-16
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
Redundant Grounding Circuit For Arc Welding
NTRS | 1988
|Springer Verlag | 2022
|A Fault-Tolerant Estimator for Redundant Systems
IEEE | 1975
|