Several development trends of power cable manufacturing industry

Author：hlyb Add Time：2016-03-30 17:23:20

There has been a phenomenon of "emphasizing power supply and neglecting power grid" in China's power industry for a long time. The ratio of power supply to power grid is 7:3, while the ratio in developed countries is basically 5:5. The following problem is the restriction of power supply by transmission and transformation battery neck, which will inevitably bring good development opportunities to power grid construction.

The power transmission and transformation primary equipment industry, which belongs to the power cable manufacturing industry, has relatively low technical content and low entry threshold. The users are mainly State Grid Corporation of China. This market pattern has led to the partial loss of the pricing power of many equipment suppliers. After rapid expansion, the whole industry is facing the problem of rising raw material prices. The competition in the industry is becoming increasingly fierce and the profit shows a downward trend; The secondary power transmission and transformation equipment industry is an industry with relatively small periodic fluctuation. It involves the high-tech field with high technical barriers and is monopolized by several large companies. In view of the development prospect of China's power industry, the wire and cable manufacturing industry, as its sub industry, still has a good expansion space under the promotion of the overall environment.

From the perspective of the development of power cable industry, the development of power cable in the next few years will mainly show the following trends:

(1) Although the low-voltage power cables of 1kV and below are still dominated by PVC cables, the trend of low-voltage cross-linked cables gradually replacing PVC cables will be strengthened, and the application of warm water cross-linked cables will increase. Low smoke halogen-free flame retardant cable will be developed.

(2) 6 ~ 35kV medium voltage power cables are still dominated by cross-linked cables, and prefabricated cable accessories are more widely used.

(3) The application of 110 ~ 220kV cross-linked cables will exceed that of oil filled cables, and the complete supply capacity of accessories needs to be improved. The domestic application of oil filled cables is reduced, and the number of oil filled cable outlets shall be increased. Stainless steel electrode

(4) Superconducting cable research should start. Study the basic structure, process fabrication, performance test and superconducting connection, and strive to make samples.

Wire and cable are widely used in many industrial fields such as energy, transportation, information and communication, construction, railway, urban rail transit, automobile, aviation, metallurgy and petrochemical industry. At present, China's wire and cable industry is in a new stage of development. With the development of domestic urbanization and heavy industrialization in the next few years, the construction of communication network and power grid The demand for wires and cables in transportation and other fields is still growing rapidly.

At present, there are more than 6000 enterprises in the national wire and cable industry, the industrial concentration is very low, the majority of enterprises are "small and complete" and "in the middle", and the economies of scale are poor. Therefore, the domestic wire and cable industry has fierce competition in low-end products.

However, in the high-grade wire and cable products that emphasize safety and environmental protection (such as low smoke, halogen-free, fire-proof, flame-retardant cables, etc.), the added value of the products is high, and the gross profit of the products is more than 40%. Due to the lack of production capacity, China needs a large number of imports to meet the demand. This has reserved broad development space for domestic wire and cable manufacturing enterprises that have core technology and master the production capacity of special cable products.

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Several development trends of power cable manufacturing industry