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The future development trend of new energy cables
Author:admin addtime:2018-7-12
New energy wire and cable will be the development goal of wire and cable. New energy cables can be roughly divided into: photovoltaic cables, wind power cables, cables for offshore oil platforms, cables for nuclear power plants, cables for electric motor vehicles, cables for inland conventional and unconventional natural gas. The following small series will introduce several major new energy cable product categories and performance, domestic and foreign application standards, development prospects and so on.
Wind power cable
As a clean and renewable energy source, wind energy is currently the most powerful, most mature and most promising power generation mode among many new energy sources. According to public information, China's mainland and coastal areas can use nearly 1 billion kW of wind energy resources. China's "Renewable Energy Medium- and Long-Term Development Plan" states that China's total installed wind power capacity will reach 30 million kW in 2020, and still remain in 2013-2020. It is a golden age that is promising. Wind power cables include control cables, signal cables, and twist-resistant power cables in wind turbines and towers. Due to the harsh wind farm environment and the twisting of power cables with the impeller, wind power cables are generally required to be required. Low temperature resistance, oil resistance, distortion resistance, weather resistance, UV resistance, acid and alkali resistance, etc. There is no national standard for wind power cables in China. Only the national wire and cable quality supervision and inspection center issued TICW01-2009 "rated voltage 1.8/3kV and below" Industry standards such as twist-resistant flexible wires for wind power generation.
Tower cable is the most widely used cable in wind power systems. We often say that wind power cables refer to such cables. Because the tower cable oscillates with the fan in the forward and reverse direction, the performance of the tower cable is extremely strict, that is, the structure is required to be soft, and it is required to have high tensile strength, low temperature resistance (-40 ° C), and ultraviolet resistance. Torque resistance, salt spray resistance (such requirements in offshore wind power plants), seawater corrosion resistance, abrasion resistance, weathering resistance, flame retardant and other properties.
Photovoltaic cable
The development of solar energy has shown a well-drilling development in recent years. As of the end of 2010, China's installed capacity of solar photovoltaic power generation has reached 893 MW, ranking seventh in the world. Expected to 2020
In the year, the total installed capacity of solar photovoltaic power generation in China will exceed 30,000 MW. The state also supports the photovoltaic construction project. Photovoltaic power generation has driven the rapid development of related products, such as photovoltaic cables.
Usually, the low-voltage direct current generated by photovoltaic power generation needs to be converted into alternating current, and the connecting cable between the photovoltaic battery and the AC-DC inverter is a photovoltaic cable. Theoretically speaking, a photovoltaic module generally needs 2 0. 8-1
Single-core cable between m, so if we follow the development speed of the corresponding photovoltaic modules, by 2020, the amount of photovoltaic cable in China will reach about 150,000 km, and the demand space is large.
The abbreviation of photovoltaic cable is PV cable, the structure is relatively simple, namely conductor, insulation and sheath. At present, there is no national standard for photovoltaic cables in China. The most authoritative certification for photovoltaic cables in the world is TUV Rheinland TUV.
MARK and UL certification, mainly refer to the standard 2 Pfg 1169 or UL 4703, and the samples are sent to Germany or the United States, so the certification period is longer, the cost is higher, and the design focus of each sample is different.
The performance requirements of general photovoltaic cable are as follows: the thermal life of cable insulation and sheath is not less than 25 years in 120 °C environment, the cable passes the dynamic penetration test, the cable passes the single vertical burning test, and the cable passes the -40 °C low temperature test. The cable passes the acid-base test, the damp heat test, the ozone test and the weather resistance test. However, the environment of photovoltaic cable applications is different, so you should consider the location of the design, such as the bite of small animals such as mice. Shanghai Cardiff Cable Co., Ltd. specializes in the production of new energy cables. The products are exported to all major enterprises in the world and are highly praised by customers.
Nuclear cable
The construction and trade-off of nuclear power plants is one of the most concerned topics in the 21st century. Whether it is the nuclear crisis in Iran or North Korea, the nuclear disaster in Fukushima in Japan, or the referendum in some countries in Europe, all of them are carried out around nuclear power. But regardless of the trade-off, the number of cables required per nuclear power plant is huge.
International standard IEEE383 "for nuclear power plants
IE Cables, Field Connectors and Connector Type Tests and RCC-E Nuclear Island Electrical Equipment Design and Construction Rules specify emergency shutdown of the reactor, containment isolation, emergency cooling of the core, reactor waste heat transfer, reactor plant The waste heat is exported.
China's standard GB22577-2008 "1E for nuclear power plants
The General Requirements for Grade Cables specifies the general requirements for nuclear grade cables. The safety level of electrical system equipment that prevents the discharge of radioactive materials into the surrounding environment is defined as Class 1E. In China, IE-class equipment can be divided into K1, K2, and K3 according to the use environment and quality identification requirements.
There are three categories, among which the K3 quality identification program is used to verify that the equipment installed outside the containment can perform its specified functions under normal environmental conditions and under the accident conditions specified by some equipment.
The cable identified by the K3 quality verification program is called a "K3 cable." Nuclear power plant with lE grade K3 control and instrument cable insulated core must meet excellent mechanical and electrical properties, through a single vertical burning test, with low smoke, halogen-free, low toxicity, low corrosion characteristics, and its service life Should be more than 40 years.
With the increasing problem of air management, vigorous development of new energy industry has become the trend of the times. In this context, new energy cables such as photovoltaic cables, wind power cables, nuclear power plant cables, and offshore oil platform cables will gradually become the next breakthrough direction for the cable industry.
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