Intellectual Cable Makes Smarter Transmission Line

Construction of intellectual grid triggered a whole-scale revolution on power equipment. This is an upgrade coincide with development of smarter transformer, switch gear with consecutive feedback of operation status and combination of relay protection device and primary equipment. Intellectual grid requires circuit that is capable of self-diagnose and self-recovery, this relies on continuous innovation of cable manufacturers to produce Intellectual Cable, said Zhao Jian-kang, deputy director of China Electric Power Research Institute High Voltage division. In regard of common power cable products, adding innovation-driven products with self-diagnose function is necessary.

What does Intellectual Cable mean? Experts explain that on intellectual cable, transmission capacity can be observed through color change on conductor surface, such cable is also equipped with temperature sensing, indicating different colors under different temperature. For instance current transmission over 1000A, surpassing cable transmission capacity, color of conductor thus changes from white to other color, realization of this function does great help for operation of the transmission line. Take insulating for example, self-recovery function under discharge remedies defect by adding other materials.

Experts analyze that construction of reliable intellectual power grid aims to ensure safe operation, making utilization of electricity more convenient and reassuring. Measures that limits cable fault include using qualified cable, pave and set safe cable passage in accordance with corresponding protocols, conduct regular inspection and state evaluation. Current ultra high voltage cable will add some optical fiber cable, through which partial discharge and temperature inspection of the conductor can be realized, this can be seen as sensing function to some extent, making these cable intellectual.

Double loop network power supply in big cities, shrinking passage and improvement of underground cable density in urban downtown bring significant demand for power cable. While demand for maintenance-free cable and focus on insulation and voltage withstand life span raise the standard of insulating medium, performance index and brand reputation of distribution cable.

In the wake of the increase of cable application and requirement upgrade in power supply reliability by intellectual power grid, cable fault occurs occasionally, new and more intellectual cable inspection technology is need urgently. Diagnose and assessment on cable operation status is an important technological mean to ensure safe and stable power supply as well as optimal arrangement of cable upgrade, that also has significant importance in realization of efficient management of power cable within intellectual power network.

Economic value of intellectual power cable has been discovered by some cable manufacturers. The intellectual ultra flexible fire proof power cable recently developed by Wisdom Energy has passed whole performance special test conducted by National Quality

Supervision and Examination Center of Fire Proof Building Material and National Quality Supervision and Examination Center of Electric Cable, comprehensive performance of the product has been verdict abreast with international advanced level by experts in this field, the product was granted national invention patent.

Experts analyze that along with national support for smart urban construction, domestic demand for fire proof cable is expected to reach an annual increase of 15%, market demand in 2015 is approximately 7.7 billion RMB. The successful introduction of intellectual ultra flexible fire proof power cable will provide motivation for more income with respect to smart energy during the smart urban construction process in the Far East.