NOVELTY - A deep ocean current power plant (1) comprises a current generator group (2) for converting kinetic energy generated from ocean current into electrical energy, where the generator group comprises at least one turbine and at least one generator; a floating midway platform (3); a generator anchorage system (4) anchoring current generator group to floating midway platform; a midway platform anchorage system (5) anchoring the floating midway platform to a seabed; and at least one power transmission-and-distribution cable (6).    USE - As deep ocean current power plant for converting kinetic energy generated from ocean current into electrical energy (claimed).    ADVANTAGE - The deep ocean current power plant, applied in sea with depth of more than 40 meters, able to convert kinetic energy generated from ocean current into electrical energy. The constructing procedure compared with traditional constructing procedure reduces the cost and the difficulty associated with the construction, and increases the engineering reliability and product firmness. The current generator group mounted undersea is different from the prior art of shallow-sea power plants which are mounted on sea surface. Because the current generator group is placed hundreds of meters deep in the water all year round, the possibility for oxidation, corrosion, or biological attachment is less than those for the shallow-sea power plants. The floating midway platform decreases effectively a required length of the generator anchorage system and promotes significantly an anchoring stability and reliability of the power plant. The floating midway platform uses the sea-casting to anchor to the seabed, and thus this approach reduces the difficulty and the cost of the entire construction significantly because the anchor positions are chosen randomly. Furthermore, the floating midway platform not only reduces but avoids slumping or slipping of the seabed caused by earthquakes to affect the stability of the floating midway platform. Because the volume of the cables required for the method is large, all the cables are made of composite materials or polymer compounds so as to reduce the total weight of the cables. The cables possess advantages in weight, strength, and toughness. In the mean time, the cables have hairy-tail fibers at downstream reduce the high-frequency vibration on the cables caused by ocean current. The power transmission-and-distribution cable is mounted on the floating midway platform instead of touching the seabed, linked to another floating midway platform, and finally connected to a land substation. Consequently, the above steps reduce total length of cables, avoid scattering cables on the seabed, and eliminate broken cables caused by geological change after completing the power plant construction. The plant construction does not require positioning in advance or constructing on a fixed position afterwards. Most works are completed on sea surface or on land. Little works need to be done undersea. Therefore, the cost is relatively low and the construction is uncomplicated due to its simple structure. Most of the works are completed on sea surface or on land. Little works need to be done undersea. Therefore, the cost is relatively low and the plant is easy to construct. It is a mature, standardized technology for testing and correcting the techniques and procedures. As a result, the cost is low and it is relatively simple to carry out. The stated constructing process will ease both difficulties and cost in the construction as well as improve the engineering reliability and finished work's stability. As a whole, the above constructing procedure not only reduces the difficult of the construction, but also increases the reliability of the engineering and the stability of overall structure.    DETAILED DESCRIPTION - A deep ocean current power plant (1) comprises a current generator group (2) for converting kinetic energy generated from ocean current into electrical energy, where the current generator group comprises at least one turbine and at least one generator; a floating midway platform (3) comprising several hollow-links mounted on an electrical power conversion equipment; a generator anchorage system (4) anchoring the current generator group to the floating midway platform; a midway platform anchorage system (5) anchoring the floating midway platform to a seabed; and at least one power transmission-and-distribution cable (6) transmitting electrical energy which is generated from the current generator group to the electrical power conversion equipment (32), and connecting to a land substation (7). The generator anchorage system comprises anchoring cables which are made of polymer compounds or light-weight and high-strength composite materials. An INDEPENDENT CLAIM is included for a constructing procedure of the deep ocean current power plant involving numbering at least one submarine cable which is included in a midway platform anchorage system; injecting water into several hollow-links which are included in a floating midway platform; fixing the submarine cables to the floating midway platform; anchoring a current generator group via at least one anchoring cable which is included in a generator anchorage system to the floating midway platform; and setting the floating midway platform and the current generator group stably on the ocean current.    DESCRIPTION OF DRAWING(S) - The figure shows a side view of the deep ocean current power plant.    Deep ocean current power plant (1)    Current generator group (2)    Floating midway platform (3)    Generator anchorage system (4)    Midway platform anchorage system (5)    Power transmission-and-distribution cable (6)    Land substation (7)    Electrical power conversion equipment (32)