Straddle-type monorail vehicle ground energy storage power supply system

Abstract

The invention relates to a straddle-type monorail vehicle ground energy storage power supply system which comprises an urban power grid, a train traction network and a ground energy storage network, wherein the train traction network is used for providing a train with driving and braking power; the ground energy storage network is used for providing power for the train traction network during thetrain start-up process, and receiving electric energy generated by train braking for self-charging during the train braking process; the urban power grid is used for charging the ground energy storagenetwork and providing power for the train traction network in case of insufficient energy storage in the ground energy storage network. The ground energy storage power supply system provides power for train operation through intelligent control, charges the ground energy storage network during the nighttime trough, and is capable of completely recovering the braking energy generated when the train is electrically braked, thereby realizing secondary utilization of renewable energy, reducing the maximum power demand and impact on the power supply system by the train, reducing the power load onthe urban power grid, and ensuring the power supply system and the train to have the characteristics of green, environmental protection and energy saving.

Description

technical field [0001] The invention relates to the technical field of traction power supply for train power, in particular to a ground energy storage power supply system for straddling monorail vehicles. Background technique [0002] Urban rail transit trains have the advantages of low energy consumption, high speed, high environmental protection, etc., and are an effective means to solve urban traffic congestion. Although my country has entered the stage of rapid development of rail transit, due to the large fluctuation of traction power in urban rail transit system, the utilization rate of traction substation equipment capacity is reduced, and the unidirectional energy flow of traction substation makes a lot of regenerative braking energy wasted. In order to reduce energy consumption and reduce operating costs, the application of energy storage technology in the field of rail transit has become a research hotspot at home and abroad. [0003] In the prior art, the general...

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Problems solved by technology

[0003] In the prior art, the general method of rail transit power supply system is to use the main substation or several traction / step-down substations, as well as the traditional overhead catenary or the ground / surface third rail power supply system to provide power for the entire line of trains, all based on The urban power grid is a direct power supply source, and the electrified railway is a large power user. The use of electricity during the peak period will cause a huge power load on the urban power grid. At present, energy storage technology is used as a supplement, and it is supplemented to the train traction network during the peak period of power consumption. , to ensure the normal operation of the train; after adopting the above energy storage technology, it will still cause a large power load problem to the urban power grid, and the construction requirements for the urban power grid are relatively high, which greatly increases the cost of infrastructure construction

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