Rail transit section substation and power supply section voltage stabilization control method

Abstract

The invention relates to a rail transit section substation and a power supply section voltage stabilization control method, and the section substation comprises a wiring system which is used for connecting the section substation to a power grid; an energy storage system which is connected with the wiring system and can store and release electric energy; a control system which is connected with the wiring system and the energy storage system, wherein the control system can send an instruction to the energy storage system to control the energy storage system to charge and discharge; and a signal system which is connected with the control system and is used for communication inside the interval substation and communication between the interval substation and an external track line. The section substation can be directly arranged in a power supply section as a miniature substation, is used for solving the problem of low voltage of a power supply network in a rail transit power supply section, particularly a long section, does not need to report, approve and increase power supply capacity, does not need large-scale construction, and is simple and easy to implement and low in cost.

Description

technical field [0001] The invention belongs to the technical field of rail transit power supply systems, and in particular relates to a rail transit section substation and a voltage stabilization control method for a power supply section. Background technique [0002] At present, with the continuous expansion of the domestic rail transit industry, more and more long sections or long ramp sections have appeared in the terrain that crosses mountains, hills, rivers and oceans. For example, Shenzhen Metro Line 4 extends from the special zone to the second-line expansion area outside the special zone, and needs to pass through the Brain Shell Mountain; Chongqing Metro Line 1 extends from the urban area to the Western University Town, and needs to pass through Geleshan; The total length of the sea is 4,175 meters; Qingdao Metro Line 1, the cross-sea section has a total length of about 8.1km; Wuhan Metro has planned a number of subway lines across the Yangtze River. The power sup...

AI Technical Summary

Problems solved by technology

[0005] However, the AC35KV / 10KV medium-voltage power supply ring network connected to the subway needs to increase the power supply capacity of the main substation of the subway line, and the power consumption of the substation needs to be increased separately from the medium-voltage grid of the urban power grid.

Both methods need to be reported to the State Grid for approval, occupying the total power supply capacity of the State Grid; adding traditional substations will increase land occupation and power supply equipment costs; adding traditional substations requires a huge amount of construction, increasing project investment, and even affecting existing facilities. wired operation

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