Rail traction power grid power supply voltage stabilization, recovery and reutilization energy storage system

A technology of grid power supply and energy storage system, which is applied in the field of rail traction power grid power supply voltage stabilization, reuse of energy storage systems, and recycling fields, which can solve the problems that the traction power grid power supply voltage stabilization, recovery and reuse cannot be achieved quickly and stably. , to achieve the effect of improving the utilization rate, suppressing the influence of harmonics, and large capacity

Active Publication Date: 2021-06-01
ZHONGJIAN AIR TRAIN BEIJING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the above-mentioned problems in the prior art, that is, the problem that the existing rail transit power supply system cannot quickly and stably realize the voltage stabilization, recovery and reuse of the traction power grid power supply when the traction vehicle is pulling / braking, the present invention provides a Rail traction power grid power supply voltage stabilization, recovery, reuse energy storage system, the system includes the following units:

Method used

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  • Rail traction power grid power supply voltage stabilization, recovery and reutilization energy storage system
  • Rail traction power grid power supply voltage stabilization, recovery and reutilization energy storage system

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Embodiment Construction

[0036] The application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain related inventions, not to limit the invention. It should also be noted that, for the convenience of description, only the parts related to the related invention are shown in the drawings.

[0037] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0038] A rail traction power grid power supply voltage stabilization, recovery, and reuse energy storage system of the present invention, the system includes the following units:

[0039] The power inverter unit is used for voltage conversion of the municipal power grid power supply...

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Abstract

The invention belongs to the field of rail traction power grid control, particularly relates to a rail traction power grid power supply voltage stabilization, recovery and reutilization energy storage system and method, and aims to solve the problem that power supply voltage stabilization, recovery and reutilization cannot be realized quickly and stably during traction/braking of a traction vehicle in the prior art. The rail traction power grid power supply voltage stabilization, recovery and reutilization energy storage system comprises a power supply inversion unit, a monitoring control unit and a BMS energy storage unit, wherein the power supply inversion unit carries out voltage conversion of a commercial power supply, an electric energy recovery power supply and a BMS energy storage unit power supply; the monitoring control unit is used for monitoring peak shifting performance, harmonic and commercial power supply quality of a traction power grid in real time, and sending a command for starting the BMS energy storage unit to supply power or charge when the voltage of the traction power grid is smaller than a lower limit threshold value or the commercial power voltage is 0/the voltage of the traction power grid is larger than a set upper limit threshold value; and the BMS energy storage unit is used for receiving the command of the monitoring control unit and discharging/charging an energy storage battery. According to the rail traction power grid power supply voltage stabilization, recovery and reutilization energy storage system, power supply voltage stabilization, recovery and reutilization of the traction power grid can be rapidly and stably realized.

Description

technical field [0001] The invention belongs to the field of rail traction power grid control, and in particular relates to a rail traction power grid power supply voltage stabilization, recovery and reuse energy storage system. Background technique [0002] At present, the 750-volt DC power supply system mainly used in my country supplies power to rail transit, but most of the rail transit power supply systems use uncontrolled rectification, which has soft characteristics. When there are too many rail transit vehicles and they are in the traction state, the bus voltage of the power supply system will be greatly lowered. The electric vehicle continues to run, and the voltage of the catenary connected to the locomotive will increase during this process, even exceeding the set upper limit. [0003] Therefore, in order to ensure that the grid voltage is controlled within a certain safe range, and the catenary voltage rises without affecting the grid, some vehicles now adopt th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/12H02J3/24H02J3/32H02J3/01H02J7/00
CPCH02J3/12H02J3/241H02J3/32H02J3/01H02J7/0014H02J7/0029Y02E40/40
Inventor 贾楸烽章歌张骎王磊武长虹岳渠德朱正华
Owner ZHONGJIAN AIR TRAIN BEIJING TECH CO LTD
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