CN213544670U - Transformer core grounding current on-site acquisition device - Google Patents
Transformer core grounding current on-site acquisition device Download PDFInfo
- Publication number
- CN213544670U CN213544670U CN202022465412.6U CN202022465412U CN213544670U CN 213544670 U CN213544670 U CN 213544670U CN 202022465412 U CN202022465412 U CN 202022465412U CN 213544670 U CN213544670 U CN 213544670U
- Authority
- CN
- China
- Prior art keywords
- current
- transformer
- current transformer
- module
- casing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 14
- 239000010959 steel Substances 0.000 claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims description 31
- 238000004891 communication Methods 0.000 claims description 20
- 230000003750 conditioning effect Effects 0.000 claims description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 7
- 230000002457 bidirectional effect Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 17
- 238000012544 monitoring process Methods 0.000 abstract description 5
- 239000004020 conductor Substances 0.000 abstract description 4
- 238000011161 development Methods 0.000 description 2
- 238000012806 monitoring device Methods 0.000 description 2
- 230000006855 networking Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003137 locomotive effect Effects 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
- 238000013021 overheating Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Transformers For Measuring Instruments (AREA)
Abstract
The utility model relates to a power equipment technical field specifically is transformer core ground current collection system on spot, include the current transformer who comprises casing and current transformer casing under separable current transformer on the casing, transformer core ground flat steel installs on current transformer between casing and the current transformer casing down, and the below of casing is provided with waterproof box and current acquisition unit under the current transformer. The utility model discloses waterproof type open-close type current transformer, when the field installation, can separate casing and current transformer lower casing on the current transformer, need not to break off transformer core ground flat steel, realizes the installation under the transformer live operating condition, alone can install the operation, has improved this collection system's practicality greatly. The problem of need dismantle transformer core ground conductor when the monitoring facilities installation among the prior art, have a power failure to withdraw from the operation to traction transformer and just can install, the practicality is poor is solved.
Description
Technical Field
The utility model relates to a power equipment technical field specifically is transformer core grounding current collection system on spot.
Background
With the rapid development of railway industry, especially the high-speed development of high-speed railway lines, the reliability of a traction power supply system is one of the factors for guaranteeing the normal operation of the railway lines, and a traction transformer is of great importance as a power transformation device for transforming electric energy transmitted by a power transmission line into voltage suitable for locomotive vehicles. The transformer core is normally grounded and can be grounded only a little, and because a suspension level is generated between the transformer core and the ground, a grounding current is generated, and the current value is very small under the normal condition. However, when a line fault or an equipment fault occurs, two or more points of grounding of the transformer core exist, a loop is formed between the core and the ground, and the grounding current is increased by many times. The fault is not easy to be perceived at the initial stage, and the local overheating of the iron core and the damage to the insulation are easily caused, so that a more serious fault is formed.
The existing transformer core grounding current monitoring device is large in size, a transformer core grounding conductor needs to be detached during installation, operation of multiple persons is needed, the traction transformer needs to be powered off and quit operation, and installation can be carried out, so that the practicability of the monitoring device is greatly reduced. Therefore, the transformer core grounding current local acquisition device is provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a transformer core ground current is collection system on spot, possess and need not to dismantle transformer core and can install, do not influence transformer normal operating, improve equipment practicality's advantage, need dismantle transformer core ground conductor when having solved the monitoring facilities installation among the prior art, have a power failure to draw transformer and withdraw from the operation and just can install, the poor problem of practicality.
In order to achieve the above object, the utility model provides a following technical scheme: transformer core ground current is collection system on spot, include the current transformer who comprises casing under separable current transformer upper casing and the current transformer, transformer core ground flat steel installs on current transformer between casing and the casing under the current transformer, the below of casing is provided with waterproof box under the current transformer, and installs the current acquisition unit who is used for detecting ground current in the waterproof box.
Preferably, the waterproof box comprises a waterproof box shell and a waterproof box shell cover arranged at the bottom of the waterproof box shell, and a waterproof joint for inserting communication and power supply cables is arranged on the side surface of the waterproof box shell.
Preferably, the upper shell of the current transformer and the lower shell of the current transformer are fixedly connected through a locking screw, and a plurality of mounting and fixing screws for fixing the transformer core grounding flat steel are arranged on the side surface of the lower shell of the current transformer.
Preferably, the lower shell of the current transformer is connected with a connecting plate through a mounting bracket, and the connecting plate is fixed on the shell of the waterproof box.
Preferably, the current acquisition unit comprises a power supply module, a current conversion module, a signal conditioning module, an analog-to-digital conversion module, a microprocessor and a data communication module, the output end of the current transformer is connected with the input end of the current conversion module, the output end of the current conversion module is connected with the input end of the signal conditioning module, the output end of the signal conditioning module is connected with the input end of the analog-to-digital conversion module, the output end of the analog-to-digital conversion module is connected with the microprocessor, the data communication module is in bidirectional connection with the microprocessor, and the power supply module is respectively connected with the current conversion module, the signal conditioning module, the analog-to-digital conversion module, the microprocessor and the data.
Compared with the prior art, the beneficial effects of the utility model are as follows:
the waterproof open-close type current transformer is formed by the upper shell of the current transformer, the lower shell of the current transformer and the locking screws, when the current transformer is installed on site, the upper shell of the current transformer and the lower shell of the current transformer can be separated, transformer iron core grounding flat steel does not need to be disconnected, installation of the transformer under a live operation state is achieved, and one person can carry out installation operation, so that the practicability of the collecting device is greatly improved. Through adopting waterproof box, communication and supply cable get into from the water joint of waterproof box casing side, can avoid the current transformer of disconnect-type to influence the leakproofness of current acquisition unit, guarantee its ability normal operating, need dismantle transformer core ground conductor when having solved the monitoring facilities installation among the prior art, have a power failure to draw transformer and withdraw from the operation and just can install the poor problem of practicality.
Drawings
FIG. 1 is a perspective view of the structure of the present invention;
FIG. 2 is a schematic view of the installation of the current collecting unit of the present invention;
fig. 3 is a schematic diagram of the current collecting unit of the present invention.
In the figure: 1. an upper shell of the current transformer; 2. a locking screw; 3. a current transformer lower shell; 4. mounting a fixing screw; 5. a connecting plate; 6. mounting a bracket; 7. a waterproof case housing; 8. a waterproof case cover; 9. a waterproof joint; 10. a current collection unit; 11. a power supply module; 12. a current conversion module; 13. a signal conditioning module; 14. an analog-to-digital conversion module; 15. a microprocessor; 16. and a data communication module.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-2, the device for collecting grounding current of a transformer core on site includes a current transformer composed of an upper case 1 and a lower case 3 of the current transformer which are separable, a grounding flat steel for the transformer core is installed between the upper case 1 and the lower case 3 of the current transformer, a waterproof box is disposed below the lower case 3 of the current transformer, and a current collecting unit 10 for detecting grounding current is installed in the waterproof box. The core ground current of 1 transformer can be gathered on line to every collection system, can monitor traction transformer core ground current in real time, the electric current acquisition unit 10 that possesses bus communication function can be with a plurality of collection system network operation, realize a plurality of traction transformer's in the electric substation distributing type simultaneous monitoring, nimble network deployment mode can be according to the difference of using the scene, freely increase and decrease, be convenient for maintain and the extension, support a plurality of scene collection systems on the spot to be connected with a main website.
The waterproof box comprises a waterproof box shell 7 and a waterproof box shell cover 8 arranged at the bottom of the waterproof box shell 7, and a waterproof joint 9 for inserting communication and power supply cables is arranged on the side surface of the waterproof box shell 7. The transformer core grounding current on-site acquisition device is installed in a waterproof box consisting of a waterproof box shell 7 and a waterproof box shell cover 8 through a current acquisition unit 10, and communication and power supply cables enter from a waterproof joint 9 installed on the side face of the waterproof box shell 7. The top surface of the waterproof box shell 7 and the bottom surface of the connecting plate 5 are fixedly connected by screws. The bottom of the lower shell 3 of the current transformer is provided with 4 mounting brackets 6 all around, and the top surface of the connecting plate 5 is provided with 4 studs which are connected with the mounting brackets 6 through screws.
The upper shell 1 of the current transformer and the lower shell 3 of the current transformer are fixedly connected through a locking screw 2, and a plurality of mounting and fixing screws 4 for fixing the transformer core grounding flat steel are arranged on the side surface of the lower shell 3 of the current transformer. The lower shell 3 of the current transformer is connected with a connecting plate 5 through a mounting bracket 6, and the connecting plate 5 is fixed on a waterproof box shell 7. The side of the lower shell 3 of the current transformer is provided with 6 mounting and fixing screws 4, and when the current transformer is mounted on site, the mounting and fixing screws 4 are used for fixing the collecting device on flat steel in a use place. Waterproof type open-close type current transformer includes casing 1 on the current transformer, casing 3 and locking screw 2 under the current transformer, has realized when the field installation, can separate casing 1 and casing 3 under the current transformer on the current transformer, need not to break off transformer core ground connection band steel, realizes the installation under the transformer live operating condition to alone can carry out the installation operation, has improved this collection system's practicality greatly.
Referring to fig. 3, the current collecting unit 10 includes a power supply module 11, a current conversion module 12, a signal conditioning module 13, an analog-to-digital conversion module 14, a microprocessor 15, and a data communication module 16, an output end of the current transformer is connected to an input end of the current conversion module 12, an output end of the current conversion module 12 is connected to an input end of the signal conditioning module 13, an output end of the signal conditioning module 13 is connected to an input end of the analog-to-digital conversion module 14, an output end of the analog-to-digital conversion module 14 is connected to the microprocessor 15, the data communication module 16 is bidirectionally connected to the microprocessor 15, and the power supply module 11 is respectively connected to the current conversion module 12, the signal conditioning module 13, the analog-to. The power supply module 11 is connected with the current conversion module 12, the signal conditioning module 13, the analog-digital conversion module 14, the microprocessor 15 and the data communication module 16, so that each acquisition device can acquire the iron core grounding current of each transformer on line, the iron core grounding current of the traction transformer is monitored in real time, the current acquisition unit 10 with the bus communication function can carry out networking operation on a plurality of acquisition devices, the distributed simultaneous monitoring of a plurality of traction transformers in a substation is realized, the networking mode is flexible, the number of the acquisition devices can be freely increased and decreased according to different application sites, the maintenance and the expansion are convenient, and a plurality of site on-site acquisition devices are connected with one master station.
During the use, remove this collection system on spot to the open air after, unpack locking screw 2 apart, separate current transformer upper casing 1 and current transformer lower casing 3, pass current transformer lower casing 3 behind the band steel of installation scene, merge current transformer upper casing 1 and current transformer lower casing 3 to installation locking screw 2. Then, a fixing screw is rotatably installed, the on-site acquisition device is clamped on a flat steel on an installation site, a communication and power supply cable penetrates through the waterproof joint 9 to be connected to the upper surface of the current acquisition unit 10, the waterproof joint 9 is screwed to realize waterproofness, and the waterproof box shell cover 8 is installed on the waterproof box shell 7 and the fixing screw is screwed. After the local acquisition device is powered on and operated, the power supply module 11 converts external power supply into a proper power supply and supplies power to the current conversion module 12, the signal conditioning module 13, the analog-to-digital conversion module 14, the microprocessor 15 and the data communication module 16, so that the functional modules enter a working state. When the transformer iron core grounding flat steel on the installation site has current, the current can generate induced current on a waterproof open-close type current transformer consisting of the current transformer upper shell 1 and the current transformer lower shell 3, the current is converted by the current conversion module 12, the signal conditioning module 13 and the analog-to-digital conversion module 14 and then sent to the microprocessor 15 for current collection, the data communication module 16 is controlled to integrate and pack the data and add time marks, and then the time marks are sent to the background server through a communication cable.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. Transformer core ground current is collection system on spot, its characterized in that: the current transformer comprises a current transformer consisting of a separable current transformer upper shell (1) and a current transformer lower shell (3), wherein a transformer iron core grounding flat steel is arranged between the current transformer upper shell (1) and the current transformer lower shell (3), a waterproof box is arranged below the current transformer lower shell (3), and a current acquisition unit (10) for detecting grounding current is arranged in the waterproof box.
2. The transformer core grounding current local acquisition device according to claim 1, characterized in that: the waterproof box comprises a waterproof box shell (7) and a waterproof box shell cover (8) arranged at the bottom of the waterproof box shell (7), and a waterproof joint (9) used for inserting communication and power supply cables is arranged on the side face of the waterproof box shell (7).
3. The transformer core grounding current local acquisition device according to claim 1, characterized in that: the upper shell (1) of the current transformer and the lower shell (3) of the current transformer are fixedly connected through a locking screw (2), and a plurality of mounting and fixing screws (4) for fixing transformer iron core grounding flat steel are arranged on the side face of the lower shell (3) of the current transformer.
4. The transformer core grounding current local acquisition device according to claim 1, characterized in that: the lower shell (3) of the current transformer is connected with a connecting plate (5) through a mounting bracket (6), and the connecting plate (5) is fixed on a waterproof box shell (7).
5. The transformer core grounding current local acquisition device according to claim 1, characterized in that: the current acquisition unit (10) comprises a power supply module (11), a current conversion module (12), a signal conditioning module (13), an analog-to-digital conversion module (14), a microprocessor (15) and a data communication module (16), the output end of a current transformer is connected with the input end of the current conversion module (12), the output end of the current conversion module (12) is connected with the input end of the signal conditioning module (13), the output end of the signal conditioning module (13) is connected with the input end of the analog-to-digital conversion module (14), the output end of the analog-to-digital conversion module (14) is connected with the microprocessor (15), the data communication module (16) is in bidirectional connection with the microprocessor (15), the power supply module (11) is respectively connected with the current conversion module (12), The signal conditioning module (13), the analog-to-digital conversion module (14), the microprocessor (15) and the data communication module (16) are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022465412.6U CN213544670U (en) | 2020-10-30 | 2020-10-30 | Transformer core grounding current on-site acquisition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022465412.6U CN213544670U (en) | 2020-10-30 | 2020-10-30 | Transformer core grounding current on-site acquisition device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213544670U true CN213544670U (en) | 2021-06-25 |
Family
ID=76501879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022465412.6U Active CN213544670U (en) | 2020-10-30 | 2020-10-30 | Transformer core grounding current on-site acquisition device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213544670U (en) |
-
2020
- 2020-10-30 CN CN202022465412.6U patent/CN213544670U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202495807U (en) | Remote centralized measurement and control system for power distribution network | |
| CN102497034B (en) | Smart power grid junction station | |
| CN102638097A (en) | Remote concentrated measurement and control system for distribution network | |
| CN101170249B (en) | A lighting over-voltage protection method and system for remote computer room AC power input | |
| CN213544670U (en) | Transformer core grounding current on-site acquisition device | |
| CN209387791U (en) | Ring network cabinet line fault location monitoring device | |
| CN203588057U (en) | Wind power monitoring device | |
| CN103647290B (en) | Prefabricated storehouse formula high-pressure reactive compensation device and reactive-load compensation method | |
| CN209231449U (en) | A kind of distribution network line disconnection fault positioning device | |
| CN208806479U (en) | An automatic transformation of the distribution network ring network cabinet | |
| CN204374746U (en) | Auxiliary System in Power Plant supervisory system | |
| CN201629565U (en) | Switch cabinet arc light protection system with compact structure | |
| CN104734031A (en) | Power distribution cabinet special for low-voltage distribution system | |
| CN201608563U (en) | Electric arc light intelligent remote monitoring system | |
| CN209043962U (en) | High-tension cable sheath grounding circulation monitoring device | |
| CN203278057U (en) | Intelligent prefabricated transformer substation | |
| CN210775714U (en) | Traction substation return cable state monitoring device | |
| CN202940638U (en) | Intelligent terminal ring main unit | |
| CN113394728A (en) | Intelligent branch box | |
| CN201450318U (en) | Automatic false ground preventive low-voltage power distribution device | |
| CN213692665U (en) | Configurable AC board wiring setting device | |
| CN204517181U (en) | Complete LV intelligent switching system switch cubicle | |
| CN204230912U (en) | A kind of for 35kV system SVG device | |
| CN215682907U (en) | Multifunctional communication collection processing device | |
| CN204258115U (en) | The intelligent Prefabricated high-low voltage transformer substation of 10kV |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |