CN202939209U - Multiway switch transmission tripping outlet signal detection device - Google Patents
Multiway switch transmission tripping outlet signal detection device Download PDFInfo
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- CN202939209U CN202939209U CN 201220674487 CN201220674487U CN202939209U CN 202939209 U CN202939209 U CN 202939209U CN 201220674487 CN201220674487 CN 201220674487 CN 201220674487 U CN201220674487 U CN 201220674487U CN 202939209 U CN202939209 U CN 202939209U
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Abstract
The utility model discloses a multiway switch transmission tripping outlet signal detection device, and relates to the technical field of power system relay protection test devices. The multiway switch transmission tripping outlet signal detection device comprises a single chip microcomputer, a multiplex pulse processing circuit, a LCD and a keyboard. Multiplex voltage signals are processed by the multiplex pulse processing circuit and then transmitted to the single chip microcomputer for processing, the result which is acquired through processing is displayed on the LCD by the single chip microcomputer, and in the device, the keyboard is used to set parameters and operate the single chip microcomputer to perform data processing. In the device, the multiplex pulse processing circuit is used to capture the rising edges of a pulse which is changed rapidly, the single chip microcomputer is used to cause the LCD display screen to display measuring data after arranging multiplex switch signals automatically, the device has a pulse identification resolving power of 0.1ms, and the device can be used to detect multiplex switch signals and indicate the sequence, so the action situation of the relay protection deivce can be analyzed conveniently, the complexity of manual tests can be simplified greatly, and the maintenance efficiency can be improved.
Description
Technical field
The utility model relates to relay protection of power system test unit technical field, relates in particular to a kind of multi-way switch transmission trip signal pick-up unit.
Background technology
According to State Grid Corporation of China's relay protection examination relevant regulations; all to carry out whole group of transmission test to substation relay protection during each checking experiment; in order to ensure secondary circuit tripping operation safety and precise; need before transmission first to determine whether device tripping operation outlet signal is correct, now the general way that adopts multimeter to measure tripping operation output clamping potential change.According to the difference of protective relaying device, the transmission number of switches is also different, measures number of times from once not waiting to tens times.As when checking tranformer protection, overload cutoff or low-frequency low-voltage load shedding device, need the transmission multi-way switch, and to guarantee that the outlet order is correct.Utilize the way of multimeter manual detection judgement, or table one a people repeated detection, or many people of multilist one-time detection, length consuming time not only, take manpower, instrument is many, and due to the restriction of multimeter self performance, often can not judge the sequencing of tripping operation outlet.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of multi-way switch transmission tripping operation outlet signal detecting device, can detect simultaneously the multi-way switch actuating signal, has improved the efficient of maintenance.
For solving the problems of the technologies described above, technical solution adopted in the utility model is: a kind of multi-way switch transmission tripping operation outlet signal detecting device, it is characterized in that comprising single-chip microcomputer, multiplex pulse treatment circuit, LCD and keyboard, the plurality of voltages signal sends single-chip microcomputer to after by the multiplex pulse processing circuit processes and processes, result after single-chip microcomputer will be processed is presented on LCD, and the keyboard parameters also operates single-chip microcomputer and carries out data and process.
Preferably: described device also comprises the communication interface circuit that can be connected with computing machine.
Preferably: described LCD is the LCD with backlight.
The beneficial effect that adopts technique scheme to produce is: described device adopts the multiplex pulse treatment circuit that the rising edge of fast-changing pulse is captured; display measurement data after using the Micro Controller Unit (MCU) driving LCD display with multi-way switch signal auto arrangement; the resolving power of described device identification pulse can reach 0.1ms; and can detect simultaneously the multi-way switch signal; and indicate sequencing; be convenient to analyze the action situation of protective relaying device; greatly simplify manual testing's fussy degree, improved the efficient of maintenance.
Description of drawings
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is theory diagram of the present utility model.
Embodiment
As shown in Figure 1, a kind of multi-way switch transmission tripping operation outlet signal detecting device comprises single-chip microcomputer, multiplex pulse treatment circuit, LCD and keyboard.The plurality of voltages signal sends single-chip microcomputer to after by the multiplex pulse processing circuit processes and processes, and the result after single-chip microcomputer will be processed is presented on LCD, and described device is by the keyboard parameters and operate single-chip microcomputer and carry out data and process.
Described device is take 8 STC single-chip microcomputers as core, the multiplex pulse treatment circuit adopts TLP520 light-coupled isolation device with 110V voltage and the isolation of described pick-up unit, the rising edge pulse of 110V DC side accesses optocoupler TLP520 after current-limiting resistance, optocoupler outgoing side level state can be by high step-down, single-chip microcomputer adopts the mode of interrupting combining with inquiry to catch the level variation, and the identification passage also records current working time.19264 LCD with Chinese word library are adopted in the display part, add backlightly to make demonstration distincter reliable; Keyboard portion adopt 5 tunnel stand alone type buttons that port number is set flexibly and begin, stop, the operation such as page turning; Reserve communication interface, can realize the time synchronized of test macro and computing machine, the functions such as order reception, data upload.Described device can arrange by keyboard the number of test channel, the lane testing result can be on LCD auto arrangement and showing, and described device has the record data function, can record nearest 10 historical test results.
When using described device to detect operation, at first multi-way switch is connected by the respective channel on connecting line and described device, then described device is powered on, by keyboard, port number is set, press and begin to test after key and begin timing; After the upper demonstration test of LCD finishes, can be by stop key, test result will be presented on LCD; Also be provided with on keyboard to turn over downturning key and conveniently check test result.
Described device adopts the multiplex pulse treatment circuit that the rising edge of fast-changing pulse is captured; display measurement data after using the Micro Controller Unit (MCU) driving LCD display with multi-way switch signal auto arrangement; the resolving power of described device identification pulse can reach 0.1ms; and can detect simultaneously the multi-way switch signal; and indicate sequencing; be convenient to analyze the action situation of protective relaying device, greatly simplified manual testing's fussy degree, improved the efficient of maintenance.
Used specific case herein principle of the present utility model and embodiment thereof are set forth, the explanation of above embodiment is just with helping understand method of the present utility model and core concept thereof.Should be pointed out that for the person of ordinary skill of the art, can also carry out some improvement and modification to the utility model under the prerequisite that does not break away from the utility model principle, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (3)
1. multi-way switch transmission tripping operation outlet signal detecting device, it is characterized in that comprising single-chip microcomputer, multiplex pulse treatment circuit, LCD and keyboard, the plurality of voltages signal sends single-chip microcomputer to after by the multiplex pulse processing circuit processes and processes, result after single-chip microcomputer will be processed is presented on LCD, and the keyboard parameters also operates single-chip microcomputer and carries out data and process.
2. a kind of multi-way switch transmission tripping operation outlet signal detecting device according to claim 1, is characterized in that described device also comprises the communication interface circuit that can be connected with computing machine.
3. a kind of multi-way switch transmission tripping operation outlet signal detecting device according to claim 1, is characterized in that described LCD is the LCD with backlight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220674487 CN202939209U (en) | 2012-12-10 | 2012-12-10 | Multiway switch transmission tripping outlet signal detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220674487 CN202939209U (en) | 2012-12-10 | 2012-12-10 | Multiway switch transmission tripping outlet signal detection device |
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| Publication Number | Publication Date |
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| CN202939209U true CN202939209U (en) | 2013-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220674487 Expired - Fee Related CN202939209U (en) | 2012-12-10 | 2012-12-10 | Multiway switch transmission tripping outlet signal detection device |
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| CN (1) | CN202939209U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353556A (en) * | 2013-06-06 | 2013-10-16 | 国家电网公司 | Relay protection device pressboard outlet logic detection apparatus |
| CN104407244A (en) * | 2014-11-21 | 2015-03-11 | 国家电网公司 | Main transformer tripping matrix testing system |
| CN104716742A (en) * | 2015-03-03 | 2015-06-17 | 南京国电南自电网自动化有限公司 | Maintaining method of relay protection control type device |
| CN112285469A (en) * | 2020-10-23 | 2021-01-29 | 国网黑龙江省电力有限公司电力科学研究院 | Relay protection fault processing method |
-
2012
- 2012-12-10 CN CN 201220674487 patent/CN202939209U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353556A (en) * | 2013-06-06 | 2013-10-16 | 国家电网公司 | Relay protection device pressboard outlet logic detection apparatus |
| CN103353556B (en) * | 2013-06-06 | 2016-12-28 | 国家电网公司 | Protective relaying device pressing plate outlet logic detection device |
| CN104407244A (en) * | 2014-11-21 | 2015-03-11 | 国家电网公司 | Main transformer tripping matrix testing system |
| CN104407244B (en) * | 2014-11-21 | 2024-04-09 | 国家电网公司 | Main Transformer Tripping Matrix Test System |
| CN104716742A (en) * | 2015-03-03 | 2015-06-17 | 南京国电南自电网自动化有限公司 | Maintaining method of relay protection control type device |
| CN104716742B (en) * | 2015-03-03 | 2017-03-01 | 南京国电南自电网自动化有限公司 | A kind of repair method of relay protection and control class device |
| CN112285469A (en) * | 2020-10-23 | 2021-01-29 | 国网黑龙江省电力有限公司电力科学研究院 | Relay protection fault processing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130515 Termination date: 20171210 |