Use a large household to transform into a "actuarial master" to see the "carbon reduction book" of Tianjin Metro ...

How is the "carbon reduction" account calculated? As a large energy user, since last year, Tianjin Metro has formulated an energy -saving management mechanism, improved the construction of the energy -saving system, and vigorously promoted the implementation of energy -saving technology. It has made multiple "combination fists" to help the construction of green low -carbon cities.

Open the "carbon reduction book" of the Tianjin Metro: permanent magnet driver, smart management, heat source transformation, photovoltaic power generation ... With these keywords, the use of large households has become a "actuarial master".

Permanent magnet traction system: comprehensive energy conservation is about 20%

“牵引系统是轨道交通车辆动力的关键来源。去年开通运营的地铁4号线列车就全面采用最新的永磁同步电机牵引系统，相较于传统的异步电机牵引，具有节能、高效、轻量化、 A number of advantages such as noise reduction. "Qian Guangmin, deputy minister of the technical R & D management department of rail transit operation groups, introduced that according to calculations, Tianjin Metro Line 4 uses permanent magnet synchronous traction system, and vehicle traction energy consumption is 1.2 degrees/kilometer kilometers Compared with the average energy consumption of the line network 1.6 degrees/kilometer, the decrease is 25%. Considering that the current passenger flow of Line 4 is relatively small, the comprehensive energy conservation can also reach about 20%after the increased passenger flow.

"When Line 6 was opened in 2016, we used the two vehicles on Line 6 as the pilot to carry out the study of permanent magnet synchronous traction motor vehicles. After about 5 years of data, the reliability and energy saving of the permanent magnet traction system were continuously tracked. Sex has been verified by multi -directional, and finally promoted in batches on the 19th train of Line 4. "Qian Guangmin said.

The station "The Strongest Brain": I know who is a large electricity householder at a glance

At present, at the Fuxing Road Station, Cultural Center Station, Zhang Guizhuang Station and other smart stations, a set of smart energy management systems called "the strongest brain" play an important role.

The electricity consumption, lighting power, and shielding door system for elevator systems ... A few days ago, the reporter saw in the smart energy management system of the smart station that the electricity consumption of each electricity system was all available. "With this system, we can understand who is using large electricians, and then optimize the operation mode and energy saving transformation in a targeted manner." Qian Guangmin said.

For example, Qian Guangmin can see from the system that the energy consumption of power lighting accounts for 40%to 55%of the total energy consumption of rail transit, and the energy consumption of ventilation and air -conditioning system accounts for about 25%to 35%. Energy -saving is an important breakthrough point for rail transit energy conservation. "For this reason, the Tianjin Metro has introduced Feng Shui linkage systems one after another, and research on ventilation and air -conditioning energy -saving development system. After using Feng Shui linkage technology, the station ventilation and air conditioning system is expected to reach 15%to 20%per year."

Low -carbon vehicle base: Photovoltaic power generation will be used in super -base electricity consumption

In addition to starting from train and stations, the "carbon reduction book" of the subway is covered with all aspects.

"Before the reconstruction of the heating system, the Dabizhuang vehicle base was heated in winter, and the cost of use was high and the environmental protection performance was poor." Wu Tiehui, director of the vehicle maintenance base of Line 6, pointed at the rows of air source heat pumps in the section. In 2021, we transformed the fuel boiler into 66 air source heat pumps. After the reconstruction, the heating season saved about 14 million yuan last year, and the carbon -saving amount was about 2800 tons of standard coal, which was equivalent to reducing 7,300 tons of carbon dioxide.

On the accounts of the Daqizhuang Vehicle Base, there are energy consumption "minus" and "plus numbers" of green electricity.

Climbing to the vehicle base cover, a row of light -emile electric boards are shining under the sun. Wang Yan, director of the substation of Line 6, told reporters that a total of 2.2 MW has been installed in the first phase of the photovoltaic power generation of the Daqizhuang Vehicle Base, which has achieved grid -connected power generation at the end of June. At the moment, the second phase is under construction, and the installed capacity is 3.6 MW. It is expected that the grid -connected power generation is expected to be realized in early September. "After all the first or second photovoltaic projects are put into use, the average daily average daily power generation is 18,400 degrees, which will exceed the daily power consumption of the vehicle base."

Source: Tianjin Daily

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