The utility model discloses an environment -friendly smart power grids is with bearing weight of multi -functional high voltage power cable of composite construction certainly, including a cable core,the cable core form by many power core and the transposition of communications optical cable, the clearance department of its cable core is equipped with does not have steamed high fireproof glass cordage filling layer, and overlapping does not have steamed high fireproof glass fibrous zone around the covering the cable core outside, do not have steamed high fireproof glass fibrous zone around the covering outward crowded package thermoplasticity do not have steamed low high flame retardant polyolefin median of cigarette or HDPE inner sheath, be equipped with outside median or inner sheath and strengthen hosting core, wind and wrap the armor strengthening the outer open lapping galvanized steel strip spiral of hosting core, the galvanized steel strip spiral around the package armor steamed low high flame retardant polyolefin oversheath of cigarette of the crowded moulding nothing of bao youre outward. The utility model discloses a structure of photoelectricity unification has power transmission, optical fiber communication, optic fibre on -line monitoring function, the real intelligent control that realizes power transmission and transformation net equipment, facility state and data transmission.