Method for detecting cable early fault of low-current grounding system
A technology of small current grounding and early faults, applied in the direction of measuring electricity, measuring electrical variables, measuring devices, etc., can solve problems such as early fault detection of cables
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[0039] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.
[0040] Early fault refers to an intermittent and transient fault that occurs before the permanent fault of the equipment. It has the characteristics of short duration or low current amplitude. In this fault disturbance mode, it will not cause the action of the relay protection device. These types of failures recur over time and eventually lead to permanent failures.
[0041] Such as figure 1 As shown, a method for detectin...
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