CN204989384U - Little earth current trouble route selection device - Google Patents
Little earth current trouble route selection device Download PDFInfo
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- CN204989384U CN204989384U CN201520592380.2U CN201520592380U CN204989384U CN 204989384 U CN204989384 U CN 204989384U CN 201520592380 U CN201520592380 U CN 201520592380U CN 204989384 U CN204989384 U CN 204989384U
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- line selection
- conversion unit
- speed bus
- selection device
- analog conversion
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Locating Faults (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model provides a little earth current trouble route selection device, it has digital analog conversion unit and AD acquisition unit to inlay in the mother board, embedded core board with the digital analog conversion unit reaches AD acquisition unit is through high -speed bus connection, industry liquid crystal display with the digital analog conversion unit reaches AD acquisition unit passes through high -speed bus connection, the numeric keypad, it passes through the high speed bus with the digital analog conversion unit reaches AD acquisition unit connects, analog quantity converter integrated circuit board, it passes through the high speed bus with the digital analog conversion unit reaches AD acquisition unit connects, switching value power output integrated circuit board passes through the high speed bus with the digital analog conversion unit with AD acquisition unit connects. Through installing main part internally mounted digital analog conversion unit and AD acquisition unit and embedded core board to the technological effect that detects its fault line and position, easy access that can be rapid when small current neutral grounding sys tem breaks down.
Description
Technical field
The utility model relates to electrical equipment technical field, is specifically related to a kind of power distribution network small grounding current fault line selection device, is applicable to 3 ~ 60kV neutral non-effective grounding electrical network, when singlephase earth fault occurs, quick and precisely can select faulty line.
Background technology
China 3 ~ 60kV power distribution network extensively adopts neutral non-effective grounding mode, is also called small current neutral grounding system, and the fault overwhelming majority of small current neutral grounding system is singlephase earth fault.When there is singlephase earth fault, ground current is very little, can continue operation 1 ~ 2 hour in case of a fault, but must find faulty line as early as possible, this poses failure line selection problem.
Microcomputer type line selection apparatus traditional is at present divided into two large class, single chip computer device and industrial computer devices.The essential characteristic of single chip computer device is employing 8 or 16 singlechip chips, single color LCD.Because the CPU arithmetic speed of single chip computer device is low, therefore cannot run complicated process, cause route selection correctness not high.Because single chip computer device does not support color liquid crystal, can not use keyboard and mouse, therefore interactive capability is poor.Industrial computer device adopts 32 bit CPUs, and internal memory can reach more than 64M, and possesses hard disk, and therefore can run complicated algorithm routine, route selection accuracy is higher.But because industrial computer adopts multiple board to share the framework of pci bus, cause power consumption comparatively large, and the fallible components such as fan are more, after long-play, reliability is poor.
Utility model content
The purpose of this utility model is to provide a kind of small grounding current fault line selection device, and it has the line selection apparatus selecting out of order circuit fast.
For achieving the above object, the utility model provides following technical scheme:
A kind of small grounding current fault line selection device, comprise line selection apparatus main body, described line selection apparatus body interior is provided with motherboard, is inlaid with D/A conversion unit and AD collecting unit in described motherboard;
Inside is provided with the embedded core board of Embedded uC/OS-II operating system, and it is connected by high-speed bus with described D/A conversion unit and described AD collecting unit;
Resolution be 240 × 128 industrial LCDs be connected by described high-speed bus with described D/A conversion unit and described AD collecting unit;
Numeric keypad, it is connected with described D/A conversion unit and described AD collecting unit by described high-speed bus;
Analog converter board, it is connected with described D/A conversion unit and described AD collecting unit by described high-speed bus;
Have the switching value power supply output board card of integrated switch amount output function, power supply function and serial port function, it is connected with described AD collecting unit with described D/A conversion unit by described high-speed bus.
Above-mentioned fault line selection device, described embedded core board comprises 32 ARM chips, 512K internal memory, 4MFlash storer and the 12 bit AD sample chips that the dominant frequency be integrated on one piece of circuit board is 100MHz.
Above-mentioned fault line selection device, described switching value power supply output board card is connected with robotization backstage by relay unit, and direct current cabinet is connected by cable with described switching value power supply output board card.
Above-mentioned fault line selection device, described line selection apparatus body side is provided with the multiple USB interface be connected with described embedded core board.
Above-mentioned fault line selection device, described line selection apparatus body exterior scribbles antistatic backing.
Above-mentioned fault line selection device, described line selection apparatus body interior is provided with the radiator fan be connected with described embedded core board, has louvre at described line selection apparatus body side.
Above-mentioned fault line selection device, described line selection apparatus body interior is provided with voltage stabilizer.
In above-mentioned technical scheme, the small grounding current fault line selection device that the utility model provides, by installing D/A conversion unit and AD collecting unit and embedded core board in apparatus main body inside, thus its faulty line and position can be detected rapidly when small current neutral grounding system breaks down, the technique effect of easy access.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of small grounding current fault line selection device of the utility model;
The structural representation of the embedded core board that Fig. 2 is the line selection apparatus shown in Fig. 1.
Embodiment
As shown in Figure 1-2, a kind of small grounding current fault line selection device described in the utility model embodiment, comprise line selection apparatus main body, line selection apparatus main body comprises embedded core, motherboard, D/A conversion unit, AD collecting unit, industrial LCDs, numeric keypad, analog converter board, has integrated switch amount output function; D/A conversion unit, AD collecting unit are embedded on motherboard; Embedded core, industrial LCDs, numeric keypad, analog converter board, there is integrated switch amount output function, be all connected on motherboard by high-speed bus;
Concrete, comprise at embedded core board: embedded core board comprises 32 ARM chips, 512K internal memory, 4MFlash storer and 12 bit AD sample chips that the dominant frequency be integrated on one piece of circuit board is 100MHz and implants uC/OS-II operating system; Antistatic backing is scribbled at line selection apparatus body exterior, can effectively play the effect preventing electrostatic, at least one USB interface during line selection apparatus body side is provided with and is connected with embedded core board, supports USB mouse, USB keyboard and USB flash disk, can copy on USB flash disk by recorder data; Line selection apparatus body interior installs the radiator fan be connected with embedded core board, line selection apparatus body side has louvre, good heat dissipation effect avoiding device is overheated to quit work, line selection apparatus body interior is provided with voltage stabilizer, effectively can not be subject to the interference of high voltage or low-voltage by assurance device, it can run reliably and with long-term.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (7)
1. a small grounding current fault line selection device, comprises line selection apparatus main body, it is characterized in that: described line selection apparatus body interior is provided with motherboard, is inlaid with D/A conversion unit and AD collecting unit in described motherboard;
Inside is provided with the embedded core board of Embedded uC/OS-II operating system, and it is connected by high-speed bus with described D/A conversion unit and described AD collecting unit;
Resolution be 240 × 128 industrial LCDs be connected by described high-speed bus with described D/A conversion unit and described AD collecting unit;
Numeric keypad, it is connected with described D/A conversion unit and described AD collecting unit by described high-speed bus;
Analog converter board, it is connected with described D/A conversion unit and described AD collecting unit by described high-speed bus;
Have the switching value power supply output board card of integrated switch amount output function, power supply function and serial port function, it is connected with described AD collecting unit with described D/A conversion unit by described high-speed bus.
2. small grounding current fault line selection device according to claim 1, is characterized in that: described embedded core board comprises 32 ARM chips, 512K internal memory, 4MFlash storer and the 12 bit AD sample chips that the dominant frequency be integrated on one piece of circuit board is 100MHz.
3. small grounding current fault line selection device according to claim 1, is characterized in that: described switching value power supply output board card is connected with robotization backstage by relay unit, and direct current cabinet is connected by cable with described switching value power supply output board card.
4. small grounding current fault line selection device according to claim 1, is characterized in that: described line selection apparatus body side is provided with the multiple USB interface be connected with described embedded core board.
5. small grounding current fault line selection device according to claim 4, is characterized in that: described line selection apparatus body exterior scribbles antistatic backing.
6. small grounding current fault line selection device according to claim 5, is characterized in that: described line selection apparatus body interior is provided with the radiator fan be connected with described embedded core board, has louvre at described line selection apparatus body side.
7. small grounding current fault line selection device according to claim 6, is characterized in that: described line selection apparatus body interior is provided with voltage stabilizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520592380.2U CN204989384U (en) | 2015-08-03 | 2015-08-03 | Little earth current trouble route selection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520592380.2U CN204989384U (en) | 2015-08-03 | 2015-08-03 | Little earth current trouble route selection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204989384U true CN204989384U (en) | 2016-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520592380.2U Active CN204989384U (en) | 2015-08-03 | 2015-08-03 | Little earth current trouble route selection device |
Country Status (1)
| Country | Link |
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| CN (1) | CN204989384U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107271834A (en) * | 2017-07-04 | 2017-10-20 | 合肥东玖电气有限公司 | A kind of safe Small Electric Current Earthing And Routing Device |
| CN110208652A (en) * | 2019-06-19 | 2019-09-06 | 国网山东省电力公司济宁市任城区供电公司 | A kind of Small Electric Current Earthing And Routing Device and selection method |
-
2015
- 2015-08-03 CN CN201520592380.2U patent/CN204989384U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107271834A (en) * | 2017-07-04 | 2017-10-20 | 合肥东玖电气有限公司 | A kind of safe Small Electric Current Earthing And Routing Device |
| CN110208652A (en) * | 2019-06-19 | 2019-09-06 | 国网山东省电力公司济宁市任城区供电公司 | A kind of Small Electric Current Earthing And Routing Device and selection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20161207 Address after: 100085 Middle East Road, Beijing, No. 6, Central District, Haidian District Patentee after: Beijing Danhua Haobo Electricity Technology Co., Ltd. Patentee after: Beijing Theil (Beijing) Limited electrical contact Address before: 100085 Haidian District, Beijing on the ground floor of the building on the road No. 11, North building, Room 202 Patentee before: Beijing Theil (Beijing) Limited electrical contact |