Chinese wire and cable industry breeds a tremendous market potential
Entered in 2013, Chinese wire and cable industry faces the huge market potential, whether it is the rail transit construction or construction of power grids, will bring about tremendous business opportunities for the wire and cable industry Chinese.
In January this year, China National Grid announced that this year, the power grid investment will reach 318200000000 yuan, more than in 2012 more than 8000000000 yuan, an increase of 4%, and raised the long-term goal of UHV DC investment.
On January 7-9, the national grid in 2013 work conference, 2013 will continue to accelerate the construction of UHV power grid, power grid planning and promote the UHV projects included in the national planning. It is expected to 2020, the national grid will invest 1.2 trillion built UHV 94500 km, 3.2 million KVA substation capacity, change the flow capacity of 460000000 kilowatts, while the previously expected respectively 78000 kilometers, 3.2 million KVA, 330000000 kw.
The letter States Securities Research Report also pointed out that in 2013, will enter the UHV DC transmission project of intensive construction period, there will be 1-2 UHV DC gain approval, UHV DC transmission project investment scale will remain stable. Therefore, in this year, the State Grid Corporation is expected to be more optimistic, will give the wire and cable industry China bring unlimited business opportunities.
With the enlargement of power grid investment, we found that the overhead line more and more gradually by the power cable replaced, some economically developed city of 10kV, 35kV and even 110kV and 220kV overhead lines have been changed for all or part of the cable line.
It is not difficult to see, R & D and production of the cable line, for wire and cable production Wo market plays an important role, and with the construction of urbanization and the acceleration of city reconstruction, cable market will become increasingly tight.
Can say, aerial cable is the cable line to replace is the inevitable trend of the future, the main reason is: because the power cable laying on the ground, so the safety and reliability is far higher than the overhead cable. At the same time, from the aesthetic point of view, the overhead cables must also suffered varying degrees of elimination.
As everyone knows, the overhead line generally located in the side of a street, limiting the growth height with green trees, and overhead lines across the street and other lines in the power pole on the private pull pull, seriously affect the city appearance, so from the point of view of aesthetics, the development potential of the power cable is infinite.
Although the investment cost of cable lines compared with the overhead cable is much higher, but also because of the many advantages, make the market must not ignore it, and will also vigorously mining and implement it. Moreover, the cable line from all aspects of safety and function of view, equally so hard to give up the reason.
The first, the cable line laying saves space on the ground;
- second, the same underground cable channel, can accommodate more than lines conveying capacity, strong adaptability;
- third, less affected by natural conditions and the surrounding environment, the high reliability of power supply;
- fourth, hidden in the underground cable, safe for human body;
- fifth, the cable line operation and maintenance costs are relatively small, less construction difficulty;
- sixth, with the ring network cabinet, distribution box and other equipment, can be multi line contact, the formation of power supply network, mode of operation is very flexible, can greatly reduce the outage frequency and power cut scope, easy to realize automation of distribution network.
Vigorously promote the tunnel underground pipeline construction is reasonable and scientific, because foreign continued for many years and very mature experience in building city to give us a mirror. Tunnel type underground pipeline generally located in the city road, section similar to a cable tunnel enlargement times, both sides of the tunnel can be installed and set aside many pipeline position, the position of middle road maintenance vehicles by relatively large.
The power tunnel of underground pipe network as beneficiaries of the tunnel, underground pipe network provide a broader overhaul maintenance channel, or even maintenance vehicle can free one, provides a great convenience for the maintenance of power facilities and maintenance, shortened form of conventional cable laying under the fault location, fault elimination time, but also for Power Engineering extension of stay have a wide space, contradiction between construction forward to tunnel type underground pipe network for line path and the city congestion is becoming increasingly tense provides a complete solution, also for cable entry to open up a new heaven and earth.
Of course, it should be noted that, due to the cable line construction cost is higher, its laying mode directly affects the engineering construction cost of civil engineering, so a reasonable planning, the correct selection of cable laying manner, is the primary link cable into the work.
Cable laying mode should be considered the engineering conditions, environmental characteristics and cable type, quantity and other factors, and according to the reliable operation, easy maintenance requirements and technical and economic reasonable principles to choose. Generally used are mainly directly buried laying, laying, cable trench laying, tunnel laying.
Among them, laying mode of cable tunnel is more advanced, but the high cost of. In addition, the laying of cable tunnel are put forward higher requirements on the laying technique and cable products, the main reason is the work surface of cable tunnel laying and construction period is relatively large, generally longer, so the city especially in urban construction, will bring a certain impact on the city's traffic.
In addition, cross cutting issues and some other municipal pipeline, especially the old city, the pipe network is densely covered, so the tunnel construction need to coordinate many aspects of nature, relatively high resistance.
But is the so-called "smooth", although the cable tunnel laying