A Cable Fire Risk Assessment Model based on Multi-level Analysis Method

Under the action of instantaneous short-circuit impulse current, the cable core will lead to short-term heat accumulation, which will cause the breakdown of the cable insulator and cause fire, and even cause explosion. Therefore, it is very important for cable protection to accurately analyze the ignition mechanism of the fire in the cable and establish a scientific evaluation basis for the response to the aging state of the running cable. At present, many researches focus on the monitoring and protection of cable running state. But there is no scientific evaluation system for the probability of cable fire. In this paper, a cable fire risk assessment model based on multi-level analysis method is proposed. The cable fire risk assessment parameters are established from three aspects. Cable operation parameters. Cable fault and cable laying, The risk level of cable fire is quantified. According to the actual test data of the given model, the validity and reliability of the cable fire evaluation model proposed in this paper are verified, which has a very important reference value for ensuring the safe operation of the cable.