Low-emission safe and reliable rail transit system power supply method, device and system

Abstract

The invention relates to a low-emission safe and reliable rail transit system power supply method, a device and a system. The invention relates to a method, equipment and a system for applying a fuel cell power generation technology to an electrified rail transit power supply system and an electrified trolley bus power supply system, and provides a method for establishing a distributed power station based on the fuel cell technology to supply power to an electrified line or a station. For an existing non-electrified line, the distributed power stations based on the fuel cell technology are arranged along the line, and electrification transformation is rapidly and conveniently achieved. A plurality of or a plurality of groups of fuel cells are combined in series and in parallel, a converter is used for boosting, an energy storage device with a certain capacity is configured, and an output end is connected with the converter, so that electric power with power, voltage class and power supply system required by a traction power grid is provided, and meanwhile, a plurality of sets of redundant power generation technologies can be provided, or other power generation technologies can be combined, or redundant power supply with the power grid can be provided, and the traction electricity demand of an electrified line is met.

Description

technical field [0001] The invention belongs to the field of rail transit, and in particular relates to a method, device and system for applying fuel cell power generation technology to an electrified rail transit power supply system and an electrified trolleybus power supply system. Background technique [0002] In order to reduce harmful and greenhouse gas emissions, it is necessary to reduce dependence on fossil energy including oil and coal. Most of China's electricity comes from coal power generation. The use of cleaner energy such as hydrogen, natural gas and other green energy can help achieve the above goals. The power supply system in the field of rail transit, especially the traction power supply system, is relatively independent, and fuel cell technology can be used for power generation, and methods, devices and systems for rail transit system power supply based on fuel cell technology are needed. [0003] The existing rail transit system power supply system and f...

AI Technical Summary

Problems solved by technology

[0004] 1) At present, most of the power in the domestic grid comes from fossil energy combustion power generation, which has low energy conversion efficiency and serious pollution

Electrified rail transit system takes power from the grid, which does not guarantee the use of clean energy or renewable energy, and has no obvious effect on reducing emissions and pollution

[0005] 2) The power supply of electrified lines takes power from the grid, which has problems of uncontrollable safety, reliability and stability, and the power quality cannot be guaranteed

[0007] 4) Locomotives or trains driven by fuel cells are not suitable for the main traction tasks of electrified track line systems or electrified trolleybus systems. At the same time, locomotives or trains are equipped with energy storage devices, especially hydrogen tanks, which bring great harm to passengers and passengers. serious security risk

[0008] 5) Most of the domestic rail transit system has been electrified, and the purchased locomotives or trains are designed for this purpose, and the locomotives or trains driven by fuel cells are expensive in general.

[0009] 6) The use of photovoltaics and solar energy to establish distributed power stations is affected by geographical location and environmental conditions, which cannot guarantee continuous power supply or is not suitable for construction

[0017] The above patents cannot meet the demand for low-emission traction power supply, or cannot meet the low-emission demand for electrified line power supply in different scenarios, or cannot meet the continuous, safe, reliable and stable power supply requirements of traction power supply system

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