Abstract. The cables are usually laid underground, don't take up ground and space, are conducive to the city, factory neat and beautiful, play a role in that they can't be replaced by overhead lines on many occasions, and the cables are widely used. It is Unable to avoid breaking down for the long time running cables. This thesis aims at the malfunctions of the original cable that leads to the lack of precise positioning. Developing intelligent charge and discharge device is used to replace manual work that hands insulating rod to charge and discharge again and again, this device improves working efficiency, and ensures safety. We focus on component and application method of intelligent charge and discharge device.
Abstract. Electric power special optical cable is an important part of electric power information communication system. Electric power special optical fiber cable, can be simply understood as the optical cable and power line belongs to the same tower erection, the optical cable does not need to be set up separately. Including ADSS (ADSS), OPGW (OPGW), winding cable (GWWOP), the phase of optical fiber composite (OPPC) etc.. Electric power special optical cable is in the state of operation, when the fault occurs, it is needed to be repaired immediately. In this paper, the common faults of electric power special optical cable and its analysis methods are discussed, which provide the theoretical support for the operation and maintenance of the optical cable.
Because the cable is laid underground, the space is not occupied, and an underground cable channel can accommodate a plurality of lines, and is favorable for the city street beautiful, so the cable is used more and more widely. With the increasing number of low-voltage cables, cable accident rate is also increasing. This paper expounds the insulation resistance and DC withstand voltage test is not applicable to rubber cables, and pointed out the shortcomings of AC voltage withstand test. In order to solve the problem of low voltage cable to be able to run safely, it is very significant to develop a kind of low voltage cable voltage withstand device.
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