New energy supply system used for run-through type traction power supply and control method

Abstract

The invention discloses a new energy supply system used for run-through type traction power supply and a control method. The control method comprises the steps of determining an application area of anew energy supply system, and performing load prediction according to an electrified railway running chart of the application area and a traction load power curve in a normal working condition to obtain traction load data; obtaining a new energy daily output curve and a traction load curve according to the new energy resource state of the application area; by performing matching analysis to determine the optimal installed capacity of the new energy supply system when a constant condition is satisfied; and by combination of the planning condition of the application area, performing selection ofthe optimization operation control strategy of the new energy supply system in multiple scenarios. By virtue of the control method, new energy nearby consumption and green development of the railwaysystem can be facilitated, so that recycling of energy of a regenerative brake part can be realized effectively, the related electric energy quality problem can be avoided to bring extra economic benefits, and the basic electricity cost of the traction side can be lowered by performing peak cutting of the traction load.

Description

technical field [0001] The invention belongs to the technical field of electrified railways, and in particular relates to a new energy supply system and a control method for through-type traction power supply. Background technique [0002] With the rapid development of power electronics technology, the through-type traction power supply system has received extensive attention. The use of three-phase-single-phase AC-DC converters to replace traditional traction transformers, and mutual support between traction substations can effectively solve the problem of existing traction power supply systems. The existing problems of power quality and excessive equalization can realize the two-way flow of energy, and at the same time, it can be friendly to accept other new energy sources. And because the railway system is a large industrial user of the power system, its annual power consumption can reach 40 billion kwh, of which more than 50% is mainly consumed in the traction power supp...

AI Technical Summary

Problems solved by technology

[0004] Relevant research has been carried out on the preliminary exploration of new energy access to the railway system. The existing research mainly focuses on the connection form and control strategy of photovoltaic access to the traditional traction power supply system. The analysis process does not consider the use of new energy and The energy storage device shaves the traction load peak and recycles the regenerative braking electric energy. At the same time, there is no related research on the integration of new energy into the through-type traction power supply system.

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