CN112350296A - Direct current micro-grid measurement and control device of rail transit traction power supply system - Google Patents
Direct current micro-grid measurement and control device of rail transit traction power supply system Download PDFInfo
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- CN112350296A CN112350296A CN202011128159.3A CN202011128159A CN112350296A CN 112350296 A CN112350296 A CN 112350296A CN 202011128159 A CN202011128159 A CN 202011128159A CN 112350296 A CN112350296 A CN 112350296A
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- measurement
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- control device
- supply system
- power supply
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- 238000005259 measurement Methods 0.000 title claims abstract description 28
- 238000001035 drying Methods 0.000 claims description 14
- 238000001914 filtration Methods 0.000 claims description 11
- 235000019738 Limestone Nutrition 0.000 claims description 3
- 239000006028 limestone Substances 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 238000013480 data collection Methods 0.000 abstract description 7
- 239000011148 porous material Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/56—Cooling; Ventilation
- H02B1/565—Cooling; Ventilation for cabinets
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses a direct-current microgrid measurement and control device of a rail transit traction power supply system, relates to the technical field of microgrid measurement and control, and mainly solves the problem that the measurement and control result of the microgrid measurement and control device in the conventional rail transit traction power supply system fluctuates greatly due to the complex and diversified test environments; the device includes the casing, be provided with the mounting hole on the casing, be provided with the entrance hole on the lateral wall of casing, the downthehole wire that passes of entrance hole, the upper and lower both sides in entrance hole are provided with closing device, closing device includes the layering, the layering links to each other with the plunger spring, the inside data collection station that is provided with of casing, be provided with current transformer and voltage inductor, temperature-sensing ware in the data collection station, data collection station's both sides are provided with the baffle, be provided with the controller in the casing, be provided with the spliced pole on the lateral wall of casing, be provided with electric joint on the spliced pole, the controller links to each other with electric joint.
Description
Technical Field
The invention relates to the technical field of microgrid measurement and control, in particular to a direct-current microgrid measurement and control device of a rail transit traction power supply system.
Background
The micro-grid is also translated into a micro-grid, is a novel network structure, and is a system unit consisting of a group of micro-power supplies, loads, an energy storage system and a control device. The micro-grid is an autonomous system capable of realizing self control, protection and management, and can be operated in a grid-connected mode with an external power grid or in an isolated mode. The micro-grid is a concept relative to a traditional large power grid, and refers to a network formed by a plurality of distributed power sources and related loads according to a certain topological structure, and is related to a conventional power grid through a static switch. The development and extension of the micro-grid can fully promote the large-scale access of distributed power sources and renewable energy sources, realize the high-reliability supply of various energy source types of loads, is an effective mode for realizing an active power distribution network, is the transition from a traditional power grid to a smart power grid, and plays a crucial role in the use of the micro-grid by the safety monitoring of the micro-grid power supply system all the time, so that the normal and smooth operation of grid connection is ensured.
The micro-grid measuring and controlling device of the existing rail transit traction system has complex and diversified operating environments, so that the working accuracy of the measuring and controlling device in different environments generates deviation, the normal operation of the micro-grid is influenced, and potential safety hazards are easily brought to the operation of the micro-grid.
Disclosure of Invention
The embodiment of the invention aims to provide a direct-current microgrid measurement and control device of a rail transit traction power supply system, so as to solve the problems in the background technology.
In order to achieve the above purpose, the embodiments of the present invention provide the following technical solutions:
the utility model provides a rail transit pulls power supply system's direct current little electric wire netting measurement and control device, includes the casing, be provided with the mounting hole on the casing, be provided with the inlet wire hole on the lateral wall of casing, the downthehole wire that passes of inlet wire, the upper and lower both sides in inlet wire hole are provided with closing device, closing device includes the layering, the layering links to each other with the plunger spring, the inside data collection station that is provided with of casing, be provided with current transformer and voltage inductor, temperature-sensing ware in the data collection station, data collection station's both sides are provided with the baffle, be provided with the controller in the casing, controller movable mounting is in the casing, be provided with the spliced pole on the lateral wall of casing, be provided with electrical joint on the spliced pole, the controller.
As a further scheme of the embodiment of the invention: the controller is provided with a handle, the shell is provided with a sliding rail, and a sliding block is arranged between the sliding rail and the controller.
As a further scheme of the embodiment of the invention: two sets of current transformers, voltage inductors and temperature inductors are arranged in the data acquisition unit, and two sets of controllers are symmetrically arranged on the upper side and the lower side in the shell.
As a further scheme of the embodiment of the invention: and a buffer cushion is arranged between the controller and the connecting column.
As a further scheme of the embodiment of the invention: the both sides of casing are provided with the filtration pore, the lateral wall of casing is provided with the mounting groove in the filtration pore position, it has filter screen and drying plate to peg graft in the mounting groove, the casing is inside to be provided with the fan in the filtration pore position.
As a further scheme of the embodiment of the invention: the filter screen sets up the outside at the lateral wall of casing, the drying plate sets up the inboard at the lateral wall of casing.
As a further scheme of the embodiment of the invention: the drying plate is made of dry limestone.
Compared with the prior art, the embodiment of the invention has the beneficial effects that:
the invention installs the wire by arranging the shell and combining the wire inlet hole, detects each index in the wire by arranging the data collector in the shell and combining two groups of current transformers, voltage inductors and temperature inductors which are symmetrically arranged in the data collector, thereby carrying out real-time comparison, ensuring that the data obtained by the measurement and control device is in an accurate state and finding out the abnormal condition of the power grid in time; the controller is installed through the sliding rail and the sliding block, so that the controller can be conveniently and quickly installed and replaced, and the accurate output of data is ensured; through set up filtration pore and mounting groove on the lateral wall of casing, install filter screen and drying plate fast to guarantee the heat dissipation of casing and processing such as dry dust removal, avoid the inside influence that receives external environment of casing and lead to measured data to produce the deviation.
Drawings
Fig. 1 is a schematic structural diagram of a direct-current microgrid measurement and control device of a rail transit traction power supply system.
Fig. 2 is a schematic structural diagram of a data acquisition unit in a direct-current microgrid measurement and control device of a rail transit traction power supply system.
Fig. 3 is an installation schematic diagram of a filtering and drying device in a direct-current microgrid measurement and control device of a rail transit traction power supply system.
Fig. 4 is a schematic structural diagram of a shell in a direct-current microgrid measurement and control device of a rail transit traction power supply system.
In the figure: the device comprises a shell, 2 mounting holes, 3 wire inlet holes, 4 wires, 5 pressing strips, 6 plunger springs, 7 data collectors, 70 current transformers, 71 voltage sensors, 72 temperature sensors, 8 partition plates, 9 controllers, 10 handles, 11 sliding blocks, 12 sliding rails, 13 connecting columns, 14 electric connectors, 15 cushion pads, 16 filtering holes, 17 mounting grooves, 18 filter screens, 19 drying plates and 20 fans.
Detailed Description
In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Example 1:
as shown in fig. 1-4, a dc microgrid measurement and control device of a rail transit traction power supply system comprises a housing 1, a mounting hole 2 is arranged on the housing 1, a wire inlet hole 3 is arranged on a side wall of the housing 1, a wire 4 passes through the wire inlet hole 3, a pressing device is arranged on the upper side and the lower side of the wire inlet hole 3, the pressing device comprises a pressing bar 5, the pressing bar 5 is connected with a plunger spring 6, a data collector 7 is arranged inside the housing 1, a current transformer 70, a voltage inductor 71 and a temperature inductor 72 are arranged in the data collector 7, partition plates 8 are arranged on two sides of the data collector 7, a controller 9 is arranged in the housing 1, the controller 9 is movably installed in the housing 1, a connecting column 13 is arranged on a side wall of the housing 1, and an electric connector 14 is arranged on the connecting column 13, the controller 9 is connected with the connecting column 13 through an electric joint 14.
Specifically, through set up entrance hole 3 on casing 1, install wire 4, through the data collection station 7 that casing 1 middle part set up, each item data index in wire 4 is observed and controled to current transformer 70, voltage inductor 71, the temperature-sensing ware 72 of cooperation inside setting, receives through controller 9.
More specifically, in order to facilitate the maintenance operation of the controller 9, the controller 9 is movably mounted, and the electrical connector 14 and the connecting column 13 are combined to achieve the quick assembly and disassembly operation of the controller 9.
Further, a handle 10 is arranged on the controller 9, a slide rail 12 is arranged on the housing 1, and a slide block 11 is arranged between the slide rail 12 and the controller 9.
Specifically, the controller 9 is movably mounted by arranging the slide rail 12 and the slide block 11.
Further, two sets of current transformers 70, voltage inductors 71 and temperature inductors 72 are arranged in the data collector 7, and two sets of controllers 9 are symmetrically arranged on the upper and lower sides in the housing 1.
Specifically, in order to further ensure the stable operation of the measurement and control device, two sets of current transformers 70, voltage inductors 71 and temperature inductors 72 are symmetrically arranged in the data acquisition unit 7 and are matched with two sets of controllers 9 to respectively acquire various data of the wires 4, so that the data are compared, the measurement and control of the wires 4 are ensured to be normal, and meanwhile, the abnormality of the measurement and control device is conveniently found in time.
Further, a buffer pad 15 is arranged between the controller 9 and the connecting column 13.
Example 2:
this embodiment is a further improvement and a limitation of embodiment 1 on the basis of embodiment 1.
A direct current microgrid measurement and control device of a rail transit traction power supply system comprises all components in embodiment 1, and further comprises:
furthermore, both sides of the casing 1 are provided with filter holes 16, the side wall of the casing 1 is provided with an installation groove 17 at the position of the filter holes 16, a filter screen 18 and a drying plate 19 are inserted into the installation groove 17, and a fan 20 is arranged inside the casing 1 at the position of the filter holes 16.
Specifically, install filter screen 18 and drying plate 19 through setting up filtration pore 16 and mounting groove 17 to guarantee the observing and controlling environment of casing 1 inside, avoid casing 1 inside to take place great difference in temperature and humidity change, avoid the dust to get into inside casing 1 simultaneously.
Further, the filter screen 18 is disposed on the outer side of the side wall of the housing 1, and the drying plate 19 is disposed on the inner side of the side wall of the housing 1.
Further, the material of the drying plate 19 is dry limestone.
The working principle of the embodiment of the invention is as follows:
as shown in fig. 1-4, the casing 1 is provided, the wire 4 is installed in combination with the wire inlet hole 3, the data collector 7 is provided in the casing 1, and each index in the wire 4 is detected in combination with two sets of current transformers 70, voltage inductors 71 and temperature inductors 72 symmetrically arranged in the data collector 7, so that real-time comparison is performed, the data obtained by the measurement and control device is ensured to be in an accurate state, and the abnormal condition of the power grid is found in time; the controller 9 is installed through the sliding rail 12 and the sliding block 11, so that the controller 9 can be conveniently and rapidly installed and replaced, and accurate output of data is guaranteed; through set up filtration pore 16 and mounting groove 17 on the lateral wall of casing 1, install filter screen 18 and drying plate 19 fast to guarantee processing such as the heat dissipation of casing 1 and dry dust removal, avoid casing 1 inside to receive external environment's influence and lead to measured data to produce the deviation.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. The direct-current microgrid measurement and control device of the rail transit traction power supply system comprises a shell (1), wherein a mounting hole (2) is formed in the shell (1), and is characterized in that a wire inlet hole (3) is formed in the side wall of the shell (1), a wire (4) penetrates through the wire inlet hole (3), pressing devices are arranged on the upper side and the lower side of the wire inlet hole (3) and comprise pressing strips (5), the pressing strips (5) are connected with plunger springs (6), a data acquisition unit (7) is arranged inside the shell (1), a current transformer (70), a voltage inductor (71) and a temperature inductor (72) are arranged in the data acquisition unit (7), partition plates (8) are arranged on the two sides of the data acquisition unit (7), a controller (9) is arranged in the shell (1), and the controller (9) is movably installed in the shell (1), the side wall of the shell (1) is provided with a connecting column (13), the connecting column (13) is provided with an electric connector (14), and the controller (9) is connected with the connecting column (13) through the electric connector (14).
2. The direct-current microgrid measurement and control device of a rail transit traction power supply system according to claim 1, characterized in that a handle (10) is arranged on the controller (9), a slide rail (12) is arranged on the housing (1), and a slide block (11) is arranged between the slide rail (12) and the controller (9).
3. The direct-current microgrid measurement and control device of a rail transit traction power supply system according to claim 2, characterized in that two sets of current transformers (70), voltage inductors (71) and temperature inductors (72) are arranged in the data acquisition unit (7), and two sets of controllers (9) are symmetrically arranged on the upper and lower sides in the housing (1).
4. The direct current microgrid measurement and control device of a rail transit traction power supply system according to claim 3, characterized in that a cushion pad (15) is arranged between the controller (9) and the connecting column (13).
5. The direct-current microgrid measurement and control device of a rail transit traction power supply system according to claim 1, characterized in that both sides of the casing (1) are provided with filtering holes (16), the side wall of the casing (1) is provided with a mounting groove (17) at the position of the filtering hole (16), a filter screen (18) and a drying plate (19) are inserted in the mounting groove (17), and a fan (20) is arranged inside the casing (1) at the position of the filtering hole (16).
6. The direct-current microgrid measurement and control device of a rail transit traction power supply system according to claim 5, characterized in that the filter screen (18) is arranged on the outer side of the side wall of the housing (1), and the drying plate (19) is arranged on the inner side of the side wall of the housing (1).
7. The direct-current microgrid measurement and control device of a rail transit traction power supply system according to claim 5, characterized in that the material of the drying plate (19) is dry limestone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011128159.3A CN112350296A (en) | 2020-10-21 | 2020-10-21 | Direct current micro-grid measurement and control device of rail transit traction power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011128159.3A CN112350296A (en) | 2020-10-21 | 2020-10-21 | Direct current micro-grid measurement and control device of rail transit traction power supply system |
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| Publication Number | Publication Date |
|---|---|
| CN112350296A true CN112350296A (en) | 2021-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011128159.3A Pending CN112350296A (en) | 2020-10-21 | 2020-10-21 | Direct current micro-grid measurement and control device of rail transit traction power supply system |
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| CN (1) | CN112350296A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204538532U (en) * | 2015-04-30 | 2015-08-05 | 郝爱福 | Electric power observation and control device |
| CN107039905A (en) * | 2017-06-14 | 2017-08-11 | 何燕坤 | A kind of safety-type automatic heat radiation formula distribution automation cabinet |
| CN206712550U (en) * | 2017-05-12 | 2017-12-05 | 平顶山学院 | A kind of micro-capacitance sensor intelligent measuring and control device |
| CN208314117U (en) * | 2018-06-14 | 2019-01-01 | 席毅 | A kind of urban track traffic traction power supply monitoring device |
| CN208637871U (en) * | 2018-09-07 | 2019-03-22 | 湖南军信环保股份有限公司 | A kind of Intelligent power distribution monitoring device |
| CN209389783U (en) * | 2019-03-21 | 2019-09-13 | 安徽中祺智能电器股份有限公司 | A kind of distribution line microcomputer protecting controller |
| CN210401503U (en) * | 2019-06-27 | 2020-04-24 | 周桂森 | Intelligent measurement and control device for distribution transformer |
| CN211043967U (en) * | 2019-05-17 | 2020-07-17 | 南京晓庄学院 | Intelligent central strategy control device for micro-grid |
| CN211320585U (en) * | 2019-12-10 | 2020-08-21 | 江苏汇鑫电力科技有限公司 | Secondary small bus assembling groove for switch cabinet |
| CN211508338U (en) * | 2019-12-16 | 2020-09-15 | 芜湖市启安电气科技有限责任公司 | Combined type switch cabinet suspension mounting structure |
| CN211576391U (en) * | 2020-04-20 | 2020-09-25 | 索凌电气有限公司 | Monitoring device for micro-grid |
-
2020
- 2020-10-21 CN CN202011128159.3A patent/CN112350296A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204538532U (en) * | 2015-04-30 | 2015-08-05 | 郝爱福 | Electric power observation and control device |
| CN206712550U (en) * | 2017-05-12 | 2017-12-05 | 平顶山学院 | A kind of micro-capacitance sensor intelligent measuring and control device |
| CN107039905A (en) * | 2017-06-14 | 2017-08-11 | 何燕坤 | A kind of safety-type automatic heat radiation formula distribution automation cabinet |
| CN208314117U (en) * | 2018-06-14 | 2019-01-01 | 席毅 | A kind of urban track traffic traction power supply monitoring device |
| CN208637871U (en) * | 2018-09-07 | 2019-03-22 | 湖南军信环保股份有限公司 | A kind of Intelligent power distribution monitoring device |
| CN209389783U (en) * | 2019-03-21 | 2019-09-13 | 安徽中祺智能电器股份有限公司 | A kind of distribution line microcomputer protecting controller |
| CN211043967U (en) * | 2019-05-17 | 2020-07-17 | 南京晓庄学院 | Intelligent central strategy control device for micro-grid |
| CN210401503U (en) * | 2019-06-27 | 2020-04-24 | 周桂森 | Intelligent measurement and control device for distribution transformer |
| CN211320585U (en) * | 2019-12-10 | 2020-08-21 | 江苏汇鑫电力科技有限公司 | Secondary small bus assembling groove for switch cabinet |
| CN211508338U (en) * | 2019-12-16 | 2020-09-15 | 芜湖市启安电气科技有限责任公司 | Combined type switch cabinet suspension mounting structure |
| CN211576391U (en) * | 2020-04-20 | 2020-09-25 | 索凌电气有限公司 | Monitoring device for micro-grid |
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Application publication date: 20210209 |