CN215640176U - Track traffic vehicle renewable energy system drag test device - Google Patents
Track traffic vehicle renewable energy system drag test device Download PDFInfo
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- CN215640176U CN215640176U CN202121551403.7U CN202121551403U CN215640176U CN 215640176 U CN215640176 U CN 215640176U CN 202121551403 U CN202121551403 U CN 202121551403U CN 215640176 U CN215640176 U CN 215640176U
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Abstract
The utility model provides a drag test device of a rail transit vehicle regenerated energy system, which comprises a first regenerated energy feedback device and a second regenerated energy feedback device; the first regenerative energy feedback device comprises a direct current control cabinet connected with a direct current bus; the inverter cabinet is connected with the direct current control cabinet; the isolation transformer module is connected with the inverter cabinet; the grid-connected cabinet is connected with the isolation transformer module; the first rectifier transformer is connected with the grid-connected cabinet; the first switch cabinet is connected with the first rectifier transformer; and a first connection port connected with the first switch cabinet; the second regenerative energy feedback device comprises a rectifier cabinet connected with the direct current bus; the reactor module is connected with the rectifier cabinet; the second rectifier transformer is connected with the reactor module; the second switch cabinet is connected with the second rectifier transformer; and a second connection port connected to a second switch cabinet; the towing experiment can be better carried out, and convenience is provided for checking the function of the rail transit vehicle regenerated energy system.
Description
Technical Field
The utility model relates to the technical field of rail transit, in particular to a drag test device of a rail transit vehicle renewable energy system.
Background
The technology mainly adopts power electronic devices such as thyristors, IGBTs and the like to form a high-power three-phase inverter, the direct current side of the inverter is connected with a direct current bus in a traction substation, the regenerated braking energy is inverted into three-phase alternating current electric energy through the inverter, and the three-phase alternating current electric energy is fed back to a medium-voltage network through a rectifier transformer or a special transformer to be used by other system loads in the subway. The most important advantage of the regenerative energy feedback device based on the thyristor technology is low cost, but the disadvantages are also obvious: because the thyristor is used as a switch device, technical indexes such as harmonic waves, power factors and the like are not easy to be compatible with the harmonic wave requirement of a power grid. The IGBT-based energy feedback device is mainly represented by energy feedback devices of toshiba and the Ming Dynasty, Japan. The regenerative energy feedback device of the Japanese Toshiba and Ming dynasty adopts the technical scheme of a so-called hybrid converter; the scheme adopts the IGBT to form an inverter unit, and the IGBT and the rectifier share the traction transformer to invert energy to a medium-voltage network, but the scheme is inconvenient for checking the basic function of the energy feedback device, so that a scheme is needed to be provided for checking the basic function of the energy feedback device.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a split-towing test device of a rail transit vehicle regenerated energy system, which is used for more conveniently testing the basic functions of an energy feedback device through a provided circuit.
The embodiment of the utility model provides a drag test device of a rail transit vehicle regenerated energy system, which comprises a first regenerated energy feedback device, a second regenerated energy feedback device, a first rectifier transformer, a second rectifier transformer, a first switch cabinet, a second switch cabinet, a first connecting port and a second connecting port, wherein the first regenerated energy feedback device is connected with the first switch cabinet; the first regenerative energy feedback device comprises a direct current control cabinet connected with a direct current bus; the inverter cabinet is connected with the direct current control cabinet; the isolation transformer module is connected with the inverter cabinet; the grid-connected cabinet is connected with the isolation transformer module; the second regenerative energy feedback device comprises a rectifier cabinet connected with a direct current bus; the reactor module is connected with the rectifier cabinet; the first rectifier transformer is connected with the grid-connected cabinet; the first switch cabinet is connected with the first rectifier transformer; the first connecting port is connected with the first switch cabinet; the second rectifier transformer is connected with the reactor module; the second switch cabinet is connected with the second rectifier transformer; the second connection port is connected with the second switch cabinet.
Further, the rectifier cabinet comprises an IGBT converter and a first switch module; the first output end of the IGBT converter is connected with the positive electrode of the direct-current bus; the second output end of the IGBT converter is connected with the negative electrode of the direct current bus; the first switch module comprises a first switch connected with a first input end of the IGBT converter and a second switch connected with a second input end of the IGBT converter; a first output end of the reactor module is connected with the first switch; and the second output end of the reactor module is connected with the second switch.
Further, the reactor module comprises a first reactor and a second reactor; the first end of the first reactor is connected with the first switch; the first end of the second reactor is connected with the second switch; the second end of the first reactor is connected with the first output end of the second rectifier transformer; and the second end of the second reactor is connected with the second output end of the second rectifier transformer.
Further, the direct current control cabinet comprises an inductor and a direct current switch; the direct current switch is connected with the negative electrode of the direct current bus; the inductor is connected with the direct current switch.
Further, the inverter cabinet comprises an IGBT inverter and a second switch module; the first output end of the IGBT inverter is connected with the positive electrode of the direct current bus through a direct current contactor; the second output end of the IGBT inverter is connected with the inductor; the second switch module comprises a third switch connected with the first input end of the IGBT inverter and a fourth switch connected with the second input end of the IGBT inverter; the first output end of the isolation transformer module is connected with the third switch; and the second output end of the isolation transformer module is connected with the fourth switch.
Further, the isolation transformer module comprises a first isolation transformer and a second isolation transformer; the input end of the first isolation transformer is connected with the third switch; the input end of the second isolation transformer is connected with the fourth switch; the output end of the first isolation transformer is connected with the first input end of the grid-connected cabinet; and the output end of the second isolation transformer is connected with the second input end of the grid-connected cabinet.
Further, the grid-connected cabinet comprises a first grid-connected switch and a second grid-connected switch; the first end of the first shunt switch is connected with the output end of the first isolation transformer; the first end of the second grid-connected switch is connected with the output end of the second isolation transformer; the second end of the first shunt switch is connected with the first input end of the first rectifier transformer; and the second end of the second grid-connected switch is connected with the second input end of the first rectifier transformer.
The beneficial effects that the utility model can realize are as follows: the split-towing test device provided by the utility model can better perform split-towing experiments through the two regenerative energy feedback devices, and provides convenience for testing the functions of the regenerative energy system of the rail transit vehicle.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic view of a topological structure of a drag test apparatus according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a drag test device according to an embodiment of the present invention.
Icon: 10-double-drag test device; 100-a first regenerative energy feedback device; 110-a direct current control cabinet; 120-inverter cabinet; 130-isolation transformer module; 140-a grid-connected cabinet; 200-a first rectifier transformer; 300-a first switchgear; 400-a first connection port; 500-a second regenerative energy feedback device; 510-a rectifier cabinet; 520-a reactor module; 600-a second rectifier transformer; 700-a second switchgear; 800-second connection port.
Detailed Description
The technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
Referring to fig. 1, fig. 1 is a schematic view of a topology structure of a drag test apparatus according to an embodiment of the present invention.
In one embodiment, the present invention provides a towing test apparatus 10 for a rail transit vehicle regenerative energy system, which includes a first regenerative energy feedback device 100, a second regenerative energy feedback device 500, a first rectifier transformer 200, a second rectifier transformer 600, a first switch cabinet 300, a second switch cabinet 700, a first connection port 400, and a second connection port 800; the first regenerative energy feedback device 100 includes a dc control cabinet 110 connected to a dc bus; an inverter cabinet 120 connected to the dc control cabinet 110; an isolation transformer module 130 connected to the inverter cabinet 120; a grid-connected cabinet 140 connected to the isolation transformer module 130; the second regenerative energy feedback device 500 includes a rectifying cabinet 510 connected to the dc bus; a reactor module 520 connected to the rectifier cabinet 510; the first rectifier transformer 200 is connected with the grid-connected cabinet 140; the first switch cabinet 300 is connected with the first rectifier transformer 200; the first connection port 400 is connected with the first switch cabinet 300; the second rectifier transformer 600 is connected with the reactor module 520; the second switch cabinet 700 is connected to the second rectifier transformer 600; the second connection port 800 is connected to the second switch cabinet 700.
In the implementation process, after the equipment and instruments in the system are confirmed to be normal and intact, the switch cabinet and the energy feedback device can be sequentially connected, and under the condition that the direct current contactor is disconnected, the energy feedback system consisting of the switch cabinet, the rectifier transformer and the energy feedback device is debugged, the control and protection logic of the energy feedback device is checked, and whether the no-load output voltage of the system follows the instruction value or not is checked. When the drag pulse power source test is carried out, the test can be carried out in a back-to-back mode, wherein the second regenerative energy feedback device 500 performs rectification operation and serves as a pulse power source for simulating vehicle braking; the first regenerative energy feedback device 100 inverts the feedback operation as a feedback inversion device. The active power flows from the second regenerative energy feedback device 500 to the first regenerative energy feedback device 100.
In one embodiment, the rectifier cabinet 510 includes a first switching module that is an IGBT converter; the first output end of the IGBT converter is connected with the positive electrode of the direct-current bus; the second output end of the IGBT converter is connected with the negative electrode of the direct-current bus; the first switch module comprises a first switch S1 connected with the first input end of the IGBT converter and a second switch S2 connected with the second input end of the IGBT converter; a first output terminal of the reactor module 520 is connected with a first switch S1; a second output of the reactor module 520 is connected to a second switch S2.
The reactor module 520 includes a first reactor L1 and a second reactor L2; a first end of the first reactor L1 is connected with the first switch S1; a first end of the second reactor L2 is connected to the second switch S2; a second end of the first reactor L1 is connected to a first output end of the second rectifier transformer 600; a second terminal of the second reactor L2 is connected to a second output terminal of the second rectifier transformer 600.
In this way, the second regenerative energy feedback device 500 can be better protected and controlled.
In one embodiment, dc control cabinet 110 includes inductor L3 and dc switch K1; the direct current switch K1 is connected with the negative electrode of the direct current bus; inductor L3 is connected to the dc switch.
The inverter cabinet 120 includes an IGBT inverter and a second switch module; the first output end of the IGBT inverter is connected with the positive electrode of the direct current bus through a direct current contactor K2; the second output end of the IGBT inverter is connected to the inductor L3; the second switch module includes a third switch S3 connected to the first input of the IGBT inverter and a fourth switch S4 connected to the second input of the IGBT inverter; the first output terminal of the isolation transformer module 130 is connected to the third switch S3; the second output terminal of the isolation transformer module 130 is connected to the fourth switch S4.
The isolation transformer module 130 includes a first isolation transformer T1 and a second isolation transformer T2; the input end of the first isolation transformer T1 is connected with the third switch S3; the input end of the second isolation transformer T2 is connected with the fourth switch S4; the output end of the first isolation transformer T1 is connected with the first input end of the grid-connected cabinet 140; the output terminal of the second isolation transformer T2 is connected to a second input terminal of the grid-tied cabinet 140.
The grid-connected cabinet 140 comprises a first grid-connected switch S5 and a second grid-connected switch S6; a first end of the first shunt switch S5 is connected to an output end of the first isolation transformer T1; a first end of the second grid-connected switch S6 is connected with an output end of the second isolation transformer T2; a second terminal of the first shunt switch S5 is connected to a first input terminal of the first rectifier transformer 200; a second terminal of the second grid-connected switch S6 is connected to a second input terminal of the first rectifier transformer 200.
In summary, the present invention provides a towing test apparatus for a rail transit vehicle regenerative energy system, including a first regenerative energy feedback device and a second regenerative energy feedback device; the first regenerative energy feedback device comprises a direct current control cabinet connected with a direct current bus; the inverter cabinet is connected with the direct current control cabinet; the isolation transformer module is connected with the inverter cabinet; the grid-connected cabinet is connected with the isolation transformer module; the first rectifier transformer is connected with the grid-connected cabinet; the first switch cabinet is connected with the first rectifier transformer; and a first connection port connected with the first switch cabinet; the second regenerative energy feedback device comprises a rectifier cabinet connected with the direct current bus; the reactor module is connected with the rectifier cabinet; the second rectifier transformer is connected with the reactor module; the second switch cabinet is connected with the second rectifier transformer; and a second connection port connected to a second switch cabinet; the towing experiment can be better carried out, and convenience is provided for checking the function of the rail transit vehicle regenerated energy system.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. The split-dragging test device of the rail transit vehicle regenerated energy system is characterized by comprising a first regenerated energy feedback device, a second regenerated energy feedback device, a first rectifier transformer, a second rectifier transformer, a first switch cabinet, a second switch cabinet, a first connecting port and a second connecting port; the first regenerative energy feedback device comprises a direct current control cabinet connected with a direct current bus; the inverter cabinet is connected with the direct current control cabinet; the isolation transformer module is connected with the inverter cabinet; the grid-connected cabinet is connected with the isolation transformer module; the second regenerative energy feedback device comprises a rectifier cabinet connected with a direct current bus; the reactor module is connected with the rectifier cabinet; the first rectifier transformer is connected with the grid-connected cabinet; the first switch cabinet is connected with the first rectifier transformer; the first connecting port is connected with the first switch cabinet; the second rectifier transformer is connected with the reactor module; the second switch cabinet is connected with the second rectifier transformer; the second connection port is connected with the second switch cabinet.
2. The split-towing test device according to claim 1, wherein the rectifier cabinet comprises an IGBT converter and a first switch module; the first output end of the IGBT converter is connected with the positive electrode of the direct-current bus; the second output end of the IGBT converter is connected with the negative electrode of the direct current bus; the first switch module comprises a first switch connected with a first input end of the IGBT converter and a second switch connected with a second input end of the IGBT converter; a first output end of the reactor module is connected with the first switch; and the second output end of the reactor module is connected with the second switch.
3. The split-drag test device according to claim 2, wherein the reactor module comprises a first reactor and a second reactor; the first end of the first reactor is connected with the first switch; the first end of the second reactor is connected with the second switch; the second end of the first reactor is connected with the first output end of the second rectifier transformer; and the second end of the second reactor is connected with the second output end of the second rectifier transformer.
4. The split-type test device according to claim 1, wherein the DC control cabinet comprises an inductor and a DC switch; the direct current switch is connected with the negative electrode of the direct current bus; the inductor is connected with the direct current switch.
5. The split-towing test device according to claim 4, wherein the inverter cabinet comprises an IGBT inverter and a second switch module; the first output end of the IGBT inverter is connected with the positive electrode of the direct current bus through a direct current contactor; the second output end of the IGBT inverter is connected with the inductor; the second switch module comprises a third switch connected with the first input end of the IGBT inverter and a fourth switch connected with the second input end of the IGBT inverter; the first output end of the isolation transformer module is connected with the third switch; and the second output end of the isolation transformer module is connected with the fourth switch.
6. The split-towing test apparatus according to claim 5, wherein the isolation transformer module comprises a first isolation transformer and a second isolation transformer; the input end of the first isolation transformer is connected with the third switch; the input end of the second isolation transformer is connected with the fourth switch; the output end of the first isolation transformer is connected with the first input end of the grid-connected cabinet; and the output end of the second isolation transformer is connected with the second input end of the grid-connected cabinet.
7. The split-towing test device according to claim 6, wherein the grid-connected cabinet comprises a first grid-connected switch and a second grid-connected switch; the first end of the first shunt switch is connected with the output end of the first isolation transformer; the first end of the second grid-connected switch is connected with the output end of the second isolation transformer; the second end of the first shunt switch is connected with the first input end of the first rectifier transformer; and the second end of the second grid-connected switch is connected with the second input end of the first rectifier transformer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121551403.7U CN215640176U (en) | 2021-07-08 | 2021-07-08 | Track traffic vehicle renewable energy system drag test device |
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| CN202121551403.7U CN215640176U (en) | 2021-07-08 | 2021-07-08 | Track traffic vehicle renewable energy system drag test device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115508659A (en) * | 2022-11-16 | 2022-12-23 | 武汉新能源接入装备与技术研究院有限公司 | Opposite-dragging test platform and method for flywheel energy storage system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115508659A (en) * | 2022-11-16 | 2022-12-23 | 武汉新能源接入装备与技术研究院有限公司 | Opposite-dragging test platform and method for flywheel energy storage system |
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