Power cable fault simulation device and method utilizing electric arc ignition

Abstract

The invention discloses a power cable fault simulation device and method utilizing electric arc ignition, and aims to solve technical problems that a requirement of a power cable fault simulation teston test equipment is too high and the test is difficult to carry out in a general laboratory in the prior art. The method comprises the steps that two electrodes are fixedly installed at the two endsof a power cable, a plurality of conductive areas are arranged on the area between the two electrodes at equal intervals through a conductive mixture, the electrodes are connected into a pre-built high-voltage test platform, and an electric arc is generated on the power cable by adjusting the voltage. According to the invention, the gap between the conductive areas can be broken down under a lowvoltage, a continuous and stable arc is generated, and a fault simulation test of igniting the cable by the fault arc is realized.

Description

technical field [0001] The invention relates to a power cable fault simulation device and method using electric arc ignition, and belongs to the technical field of power cables. Background technique [0002] In recent years, more and more power cable lines have been built and put into operation, and the cable tunnel has become one of the important links in the power supply and distribution system. Since the inner space of the cable tunnel is narrow and complex, once a fire occurs in the cable tunnel , It is easy to burn a large number of power cables and other electrical equipment, which seriously threatens the safe and stable operation of the power system. In the cable tunnel fire accident, the arc formed by various faults is the main cause of the fire. Part of it is the fault of the grounding of the 10kV power cable, the protection does not operate, and the arc is continuously and stably discharged. The wire is stolen, the metal sheath has a floating potential and penetra...

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Problems solved by technology

[0004] In order to solve the problem that the power cable fault simulation test in the prior art has too high requirements on the test equipment and it is difficult to carry out the test in the general laboratory, the present invention proposes a power cable fault simulation device and method using arc ignition. Multiple conductive areas are arranged at equal intervals on the cable. By changing the voltage flowing through the power cable, the gap between the conductive areas can be broken down at a lower voltage, and a continuous and stable arc is generated to realize the fault arc igniting the fault of the cable. simulation test

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