Regenerative braking energy control distribution system and method for the urban rail transit
A technology of urban rail transit and regenerative braking, which is applied in the field of urban rail transit regenerative braking energy control and distribution system, can solve the problems of reducing equipment economy and achieve the effect of optimal energy utilization
Active Publication Date: 2018-09-14
CRRC QINGDAO SIFANG ROLLING STOCK RES INST +1
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Problems solved by technology
However, since energy absorption is restricted by the capacity of the energy storage medium, configuring enough energy storage capacity will greatly increase the volume and cost of the equipment and reduce the economical efficiency of the equipment.
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[0040] In the following, the present invention will be specifically described through exemplary embodiments. It should be understood, however, that elements, structures and characteristics of one embodiment may be beneficially incorporated in other embodiments without further recitation.
[0041] Such as figure 1 As shown, the present invention proposes an urban rail transit regenerative braking energy control and distribution system, the urban rail transit regenerative braking energy control and distribution system is connected to a power supply system, and the power supply system includes a main substation 1, an AC medium voltage Power supply network 2 and DC power supply network 3, the main substation 1 is connected to the AC medium voltage power supply network 2, the AC medium voltage power supply network 2 is connected to the DC power supply network 3, and the urban rail transit regeneration The braking energy control distribution system includes an energy feeding unit 5...
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The invention provides a regenerative braking energy control distribution system and method for the urban rail transit. The control distribution system is composed of an energy feeding unit, an energystorage unit, a main transformer station information collecting unit for collecting parameter information of a main transformer station, a central processing unit, and a backup processing unit, wherein the central processing unit and the backup processing unit are used for controlling and distributing the regenerative braking energy. The central processing unit and the backup processing unit areconnected with the energy feeding unit, the energy storage unit, and the main transformer station information collecting unit by networks; the energy feeding unit is connected with an alternating-current intermediate-voltage power supply network and a direct-current power supply network simultaneously; and the energy storage unit is connected to the direct-current power supply network. According to the invention, the central processing unit carries out logic operation based on the parameter information fed back by the system to allocate braking energy to the energy feeding unit and the energystorage unit, thereby realizing controlled allocation of all units in the system and thus allocating the regenerative energy circulating in the system.
Description
technical field [0001] The invention belongs to the field of urban rail transit power supply systems, and in particular relates to a system and method for controlling and distributing regenerative braking energy of urban rail transit. Background technique [0002] Subway electricity consumption accounts for a large part of the subway operating cost. Urban rail transit vehicles generally adopt the braking method of "regenerative braking + resistance braking + mechanical braking". The regenerative braking converts the kinetic energy of the train into electrical energy and feeds it back to the power supply network. Part of the regenerative braking energy can be used by adjacent Vehicle absorbs. If the regenerative energy cannot be absorbed by the vehicle, the regenerative energy will be absorbed by the resistor or switched to air braking, the braking energy will be wasted, and it will also bring problems such as tunnel temperature rise and dust pollution. In order to improve ...
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IPC IPC(8): H02J3/32H02J3/38
CPCH02J3/32H02J3/38
Inventor 张国红刘陆洲王通张亚伟张艳东任晓辉王昆段鹏飞杨现仃刘伟杨阳张喜茂
Owner CRRC QINGDAO SIFANG ROLLING STOCK RES INST