A double-line full-parallel AT traction power supply system and method based on comprehensive energy

Abstract

The invention discloses a double-line full-parallel AT traction power supply system and method based on comprehensive energy, including a double-line full-parallel AT traction power supply system and an integrated energy system; a photovoltaic array, a wind power generator set, and a fuel cell are connected in parallel to a DC bus, and electricity-hydrogen is added Energy storage is used to make up for power shortages, cut peaks and fill valleys. The comprehensive energy is connected to the traction power supply system in a reasonable way, and through real-time detection of the power and status of each micro-source, based on the particle swarm algorithm, the energy optimization with the goal of the lowest total power generation cost is realized. manage. The invention can ensure the safety and stability of the system and high reliability of power supply; optimize the structure of traction energy consumption and improve the consumption level of new energy; conform to the development direction of national energy conservation and emission reduction, and reduce the power supply demand of electrified railways for power systems to a certain extent.

Description

technical field [0001] The invention belongs to the technical field of new energy traction power supply, and in particular relates to a multi-line full-parallel AT traction power supply system and method based on comprehensive energy. Background technique [0002] With the development of the global economy, the problems of environmental pollution and energy shortage are becoming more and more serious, and the world's energy is accelerating the transformation to diversification, cleanliness and low carbonization. The development of renewable energy, advanced and efficient energy utilization technology and energy diversification strategy have become the inevitable choice for the sustainable development of human society. Among them, solar power generation, wind power generation, hydrogen power generation and other new energy power generation technologies have become the new favorites of the times due to their clean and efficient advantages. [0003] In recent years, my country...

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Problems solved by technology

[0005] However, at present, there are few researches on the application of comprehensive energy access to traction power supply system and its energy management methods

Due to the intermittent, fluctuating and random nature of photovoltaic power generation and wind power generation, their output power fluctuates greatly, and the traction load also has volatility and mobility, which makes the interaction between "source-grid-load" and affects the power supply. System operation scheduling and frequency stability

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