ABB's new GIS device, the world's first, replaces sulfur hexafluoride with an environmentally friendly gas mixture

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ABB's new GIS device, the world's first, replaces sulfur hexafluoride with an environmentally friendly gas mixture

发布时间：2016-11-28 来源：ydlcb 浏览次数：35次

The TOSA trolley bus, developed with ABB's participation, can not only be completed in 15 seconds “ Flash charge ” And it saves 1,000 tons of carbon dioxide a year. In addition, the world's first new GIS has been developed to replace sulfur hexafluoride with an environmentally friendly gas mixture, reducing CO2 equivalent emissions throughout the life cycle of the equipment by up to 50%.

Energy conservation and emission reduction have increasingly become an inescapable topic in the global industrial energy circle. Especially after the adoption of the Paris Agreement, the green industry has ushered in unprecedented policy dividends. However, the realization of environmental protection usually needs to invest more process links, which means that the cost is higher, and the economy is discounted, which has become the biggest obstacle to the commercialization of the technology products. Therefore, environmental protection products “ Political correctness ” Whether it can bring “ The market is right ” It remains to be seen. However, as an inevitable direction of future development, ABB is transforming to environmental protection in terms of electrical products.

On the morning of September 30, local time, nearly 20 Chinese journalists boarded a special bus on the streets of Geneva, Switzerland. This is a “ Two-node type ” White trolleybus, nearly 20 meters long. As it slowly pulled into the station, the rear car came to rest just below a canopy charging post on the side of the road.

The TOSA tram is charging

Trolleybuses are not uncommon to Swiss residents. In the 1970s, Switzerland electrified its buses. What's really new is that this tram, called TOSA, is equipped with a new trackless electric bus system that can automatically connect to the grid in 1 second and complete a flash charge in 15 seconds.

This is the latest electric bus developed by ABB. ABB is responsible for providing on-board traction equipment (including traction assist integrated converters, permanent magnet traction motors, etc.), new fully automatic charging devices, rechargeable batteries, energy conversion systems, etc.

Today, Geneva's Line 23 is the world's first TOSA bus route. It crosses the Rhone river, which separates the city of Geneva and runs east-west, and runs through the north and south of the city, a total length of 12 km, with 13 “ Flash charging station ” With 12 TOSA buses.

At 20 tons, the TOSA bus is 10 times the size of the Tesla ModelS, but the battery capacity is only 70 KWH, which is only 70 percent of the 100 KWH battery capacity of the highest upgraded version of the Tesla ModelS.

According to ABB's design, the power of the flash charging station can reach 600 kilowatts, which is five times that of the Tesla supercharging network, and the bus can get enough power to travel to the next station after 15 seconds of charging. The electric bus leaves every 10 minutes, and can be fully charged in 4-5 minutes after the car arrives at the terminal. Warner said that because of charging along the way, during the driving process, the battery is always maintained at more than 90%, and generally does not appear in the embarrassment of breaking down halfway without power.

“ The advantage of TOSA is that it uses the time when passengers get on and off the bus to charge, saving the charging time of the tram at the terminal, thus improving the efficiency of vehicle use and higher commercial economy; At the same time, a TOSA tram can reduce carbon dioxide emissions by 1,000 tons per year, making it more environmentally friendly. ” Warner said.

According to the Geneva Public Transport Agency (TPG), after transforming the ordinary trolley bus line into the TOSA system, its operating costs are basically the same as before; The TOSA system is expected to cost less than ordinary trolley bus systems, taking into account the scale effects after roll-out. In Geneva, in addition to Line 23, four other bus routes will also use TOSA.

Since buses are municipal construction projects, under the pressure of energy conservation and emission reduction targets, the government has the incentive to promote the promotion of tram projects. But municipal construction also needs to consider the economic cost, as well as the applicability of the project landing. When examining the TOSA tram, some media reporters questioned whether the project may be suitable for Geneva, but whether it is suitable for congested cities such as Beijing and Shanghai is still doubtful.

Another major environmental product for ABB is a new Gas Insulated Switchgear (GIS).

ABB gas insulated switchgear

This is a compact metal-encapsulated switchgear consisting of electrical switches, fuses, or circuit breakers used to control, protect, and isolate electrical equipment in the power grid. Switchgear is used in the entire power system from generation, transmission, distribution to electricity consumption, throughout different voltage levels. Medium and high voltage switchgear is commonly used in transmission and distribution solutions to help ensure the reliability, efficiency and security of the grid.

The world's first gas-insulated switchgear was supplied by ABB. Recently, ABB partnered with the State Grid Corporation of China to increase the world record voltage rating for GIS to 1100kV

At present, gas insulated switches used in the industry “ Gas ” , usually sulfur hexafluoride. This is an inert gas, which can effectively exert “ Insulation ” Function to prevent leakage of high voltage current. Although the switchgear is sealed with metal pipes, leaks are inevitable. As one of the scourges of greenhouse effect, fluorine gas has been strictly restricted by relevant environmental regulations.

ABB has developed the world's first new GIS to replace sulfur hexafluoride with an environmentally friendly gas mixture that can reduce CO2 equivalent emissions over the life cycle of the device by up to 50%. However, the information about the gas mixture is a commercial secret and ABB has not disclosed it. ABB has delivered the world's first new GIS to EWZ, a Swiss energy services provider.

Pasal M&uuml, EWZ Project Manager; Over the life cycle, ller said, the cost of the new GIS is similar to that of traditional products, because the post-treatment cost of sulfur hexafluoride in traditional products will increase as environmental requirements become more stringent.

ReinerSchonrock, head of product and innovation strategy communications at ABB, said that if the GIS in use today is not at the end of its useful life, customers cannot be forced to replace it. In the future, ABB will vigorously promote the new and more environmentally friendly mixed gas GIS.

“ The 11th Five-Year Plan ” Since then, China's environmental protection industry has grown at an average annual rate of more than 15%, entering a stage of rapid development. According to the National Development and Reform Commission, the output value of the environmental protection industry is expected to reach 4.5 trillion yuan by the end of 2015. Some market analysts say that in recent years “ Qi ten ” , “ Water ten” Such policy support has increased, coupled with the focus of this year's G20 Hangzhou Summit “ Green finance ” We are actively guiding the marketization and scale expansion of the environmental protection industry. Now, including a number of central enterprises, including various capital competing to enter, mergers and acquisitions integration surging, the market is full of imagination.