System and method for supplying power to electric locomotive with nature energy

Abstract

The invention provides a system for supplying energy to an electric locomotive by utilizing natural energy and the method thereof. Solar energy is converted to be electric energy for accumulation through a solar photovoltaic array, or wind energy is converted to be electric energy for accumulation through a wind power generation device array in the invention, so as to be used for charging a storage battery of the electric locomotive in an energy filling station, and meanwhile, the system is also connected with a commercial power network. When the electric quantity generated by the solar photovoltaic array is sufficient in a sunny daylight, or electric quantity generated by wind power generation device array is sufficient because of larger wind, the redundant electric quantity can be incorporated into the commercial power network for other loads; in an overcast weather in a daylight or a night, or when the wind is smaller, the alternate current from the commercial power network can be converted into direct current for accumulation, so as to be used for charging the storage battery of the electric locomotive in the energy filling station; and the storage battery and the electric locomotive can be complemented one another. Therefore, the reliable and stable energy supply for the electric locomotive by utilizing the natural energy can be realized, the dependence on the non-renewable energy resources, such as petroleum, coal and the like, can be reduced, the energy crisis is relieved, and the atmospheric environment is protected.

Description

technical field [0001] The invention relates to the technical field of natural energy power generation applications, in particular to a system and method for using natural energy to supply energy to electric locomotives. Background technique [0002] At present, China's electrified railway adopts a power frequency single-phase 25kV AC system, while the mains power grid is a three-phase AC system with different voltage standards and cannot be used directly. It needs to be converted from three-phase to single-phase by changing the voltage level. use. Therefore, the existing energy supply system for electric locomotives generally transmits the high-voltage three-phase AC power from the mains grid to the traction substation, and the traction substation then converts the high-voltage three-phase AC power delivered by the mains network into a power supply suitable for electric locomotives. , and transmit it to the catenary to provide energy for electric locomotives. [0003] We ...

AI Technical Summary

Problems solved by technology

[0004] At present, there is no stable and reliable technical solution for using natural energy such as solar energy to supply energy to electric locomotives, so as to reduce the dependence on non-renewable energy sources such as oil and coal, alleviate the energy crisis, and protect the atmospheric environment.

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