| Cable line has the characteristics that the capacitance to earth is large,the insulation is small, which is running underground, the working space is small and so on, it is impossible to adopt the way of live working directly to develop the work of maintemaning andrush repairing in the cable machinery. Flexible bypass cable laying and protection, the type match of the cable joints influence the safety and efficiency of the operation work, it is necessary to according to the characteristics of the region to develop the practical study of operation without power cut in the cable line. Research results are of great significance to improve the operation reliability of the 10 KV line.This topic studied the live working technology on the cable termination,and did simulation calculation on the operation process of cable termination, made comparative analysis of the over voltage, over current and arc energy produced by switching the no-load cable line under different cases, put forward the control method and protective measures about the dangerous points on the operation process of the cable termination. Developed the live working machineryon the cable termination, improved the method of the flexible bypass cable laying, designed adopt the method of combined overhead with laying on the ground to complete the flexible bypass cable laying, developed the cable laying tools and the protection implement. Research results can provide technical support for the program of the live working on the cable line. |
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