CN215340212U - High-power intermediate relay calibration device - Google Patents
High-power intermediate relay calibration device Download PDFInfo
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- CN215340212U CN215340212U CN202121765950.5U CN202121765950U CN215340212U CN 215340212 U CN215340212 U CN 215340212U CN 202121765950 U CN202121765950 U CN 202121765950U CN 215340212 U CN215340212 U CN 215340212U
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- 238000012360 testing method Methods 0.000 claims abstract description 14
- 230000003287 optical effect Effects 0.000 claims abstract description 11
- 239000004973 liquid crystal related substance Substances 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 4
- 238000012795 verification Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model designs a high-power intermediate relay calibration device, which comprises a device shell, wherein a display device is arranged on the first side surface of the device shell; an indicator light is arranged on the left side of the display device; a starting test button and a resetting button are arranged on the right side of the display device; the lower part of the display device is provided with a function key; a voltage adjusting knob is arranged on the right side of the function key; a power switch, a power jack, a relay checking wire inserting hole and a mutual inductor checking wire inserting hole are arranged on the second side surface opposite to the first side surface; an alternating current-direct current converter, a sampling resistor module, an optical coupler module and a single chip microcomputer are arranged in the device shell; the AC-DC converter is connected with the sampling resistor module; the single chip microcomputer is connected with the sampling resistor module, the optical coupler module and the display device. The utility model has simple structure and lower cost, greatly reduces the time for checking the non-electric quantity protection intermediate relay and improves the working efficiency.
Description
Technical Field
The utility model belongs to the technical field of electric power overhaul auxiliary equipment, and particularly relates to a high-power intermediate relay calibration device.
Background
In the main transformer non-electric quantity protection, a high-power re-operating intermediate relay is required to be additionally arranged, and the non-electric quantity protection misoperation can be caused due to the absence of the intermediate relay; the intermediate relay has too low power and can also cause protection malfunction. According to the eighteenth anti-accident measure of the national grid company, item 15.6.7: the external switch-in terminal is directly started, and can be directly tripped without locking (such as non-electric quantity protection of a transformer and a reactor, remote tripping without local judgment and the like), or an intermediate relay with the action voltage within 55-70% of the rated direct-current power supply voltage is adopted at the start switch-in terminal and the action power required to be not lower than 5W once a tripping operation has a large influence (such as failure starting and the like) though limited locking conditions exist. In summary, in order to ensure the protection of correct action, the staff should perform relevant verification on the intermediate relay used for the main transformer non-electric quantity protection. In the actual test process, the traditional mode of using a microcomputer tester to adjust voltage cannot meet the realization of the verification function of the intermediate relay in the existing microcomputer protection, the traditional method for verifying the intermediate relay through a microcomputer experiment table is complex in wiring, the process of using a universal meter to measure voltage and using a clamp meter to measure current is long in time, the manual operation speed is low, the accuracy is low, and the whole scheduled inspection process is long in time.
Disclosure of Invention
The utility model adopts the following technical scheme for solving the problems: a high-power intermediate relay calibration device comprises a device shell, wherein a display device is arranged on a first side surface of the device shell; an indicator light is arranged on the left side of the display device; a starting test button and a resetting button are arranged on the right side of the display device; a function key is arranged below the display device; a voltage adjusting knob is arranged on the right side of the function key; a power switch, a power jack, a relay checking wire inserting hole and a mutual inductor checking wire inserting hole are arranged on the second side surface opposite to the first side surface; an alternating current-direct current converter, a sampling resistor module, an optical coupler module and a single chip microcomputer are arranged in the device shell; the alternating current-direct current converter is connected with the sampling resistor module; the single chip microcomputer is connected with the sampling resistor module, the optical coupler module and the display device.
Preferably, the alternating current-direct current converter converts alternating voltage into a reliable adjustable direct current voltage source, the sampling resistor module collects current values and sends the measured current values to the single chip microcomputer for calculation, and the single chip microcomputer sends results to the display device.
Preferably, the optical coupler module collects signals of closing of the relay and the contact and transmits the signals to the single chip microcomputer for detection, and the single chip microcomputer sends results to the display device.
Preferably, the display device adopts a non-touch liquid crystal display screen.
Preferably, the single chip microcomputer adopts a PIC32 single chip microcomputer.
The utility model has the following positive beneficial effects: the time for checking the non-electric quantity protection intermediate relay is greatly reduced, and the working efficiency is improved; the installation is simple and easy, the working performance is stable, the safety measures in operation are not influenced, and the safety is ensured; the environment is not affected; the manufacturing cost is low.
Drawings
Fig. 1 is a side view of a high-power intermediate relay checking apparatus.
Fig. 2 is another side view of fig. 1.
Fig. 3 is a flow chart of the system of fig. 1.
Fig. 4 is a flowchart of measuring the relay operating voltage of fig. 1.
Fig. 5 is a flowchart of the test for measuring the operating time of the relay in fig. 1.
In the figure: 1. the device comprises a device shell, 2 an indicator light, 3 a display device, 4 a starting test button, 5 a reset button, 6 a voltage adjusting knob, 7 a function key, 8 a power switch, 9 a relay checking wire plug hole, 10 a transformer checking wire plug hole, 11 a power jack, 12 a first side face and 13 a second side face.
Detailed Description
The utility model will be further illustrated with reference to some specific examples.
A high-power intermediate relay calibration device comprises a device shell 1, wherein a display device 3 is arranged on a first side surface 12 of the device shell 1; an indicator light 2 is arranged on the left side of the display device 3; a starting test button 4 and a resetting button 5 are arranged on the right side of the display device 3; a function key 7 is arranged below the display device 3; the right side of the function key 7 is provided with a voltage adjusting knob 6; a power switch 8, a power jack 11, a relay checking wire hole 9 and a mutual inductor checking wire hole 10 are arranged on a second side surface 13 opposite to the first side surface 12; an alternating current-direct current converter, a sampling resistor module, an optical coupler module and a single chip microcomputer are arranged in the device shell 1; the AC-DC converter is connected with the sampling resistor module; the single chip microcomputer is connected with the sampling resistor module, the optical coupler module and the display device 3.
The alternating current-direct current converter converts alternating current voltage into a reliable adjustable direct current voltage source, the sampling resistance module collects current values and sends the measured current values to the single chip microcomputer for calculation, and the single chip microcomputer sends results to the display device 3; the optical coupler module collects signals of closing of the relay and the contact and transmits the signals to the single chip microcomputer for detection, and the single chip microcomputer sends results to the display device 3; the display device 3 adopts a non-touch liquid crystal display screen; the singlechip adopts a PIC32 singlechip.
The working principle is as follows: the high-power intermediate relay is initially checked according to the measured operating voltage shown in FIG. 4
The device opens a menu for entering the relay worker verification, clicks to confirm to enter the menu, rotates the voltage regulation to rotate and adjust the direct current input voltage (the voltage should be between 55% and 70% of the rated voltage), clicks the starting test button 4 after the wiring and the voltage regulation are finished, generates a power value, performs three tests and observes whether the results are similar, records data to finish the test if the results are similar, and checks the wiring and rewinds if the results are not similar.
According to the action of the relay tested in the figure 5, the high-power intermediate relay checking device is opened to enter a 'relay working time test' menu, clicking confirmation enters the menu, rotating 'voltage regulation' to adjust the direct current input voltage to be 100V, after wiring and voltage regulation are completed, clicking a start test button 4, automatically measuring and displaying the action time of the relay on a non-touch liquid crystal display screen by the device, carrying out three tests and observing whether the results are close, if so, recording data to finish the test, and if not, checking wiring and rewiring.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent substitutions made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
Claims (5)
1. A high-power intermediate relay checking device comprises a device shell (1), and is characterized in that a display device (3) is arranged on a first side surface (12) of the device shell (1); an indicator lamp (2) is arranged on the left side of the display device (3); a starting test button (4) and a resetting button (5) are arranged on the right side of the display device (3); a function key (7) is arranged below the display device (3); a voltage adjusting knob (6) is arranged on the right side of the function key (7); a power switch (8), a power jack (11), a relay checking wire inserting hole (9) and a mutual inductor checking wire inserting hole (10) are arranged on a second side surface (13) opposite to the first side surface (12); an alternating current-direct current converter, a sampling resistor module, an optical coupler module and a single chip microcomputer are arranged in the device shell (1); the alternating current-direct current converter is connected with the sampling resistor module; the single chip microcomputer is connected with the sampling resistor module, the optical coupler module and the display device (3).
2. The high-power intermediate relay checking device according to claim 1, characterized in that the ac-dc converter converts an ac voltage into a reliable adjustable dc voltage source, the sampling resistor module collects a current value and sends the measured value to the single chip microcomputer for calculation, and the single chip microcomputer sends the result to the display device (3).
3. The high-power intermediate relay checking device according to claim 1, wherein the optical coupler module collects signals of closing of a relay and a contact and transmits the signals to the single chip microcomputer for detection, and the single chip microcomputer sends results to the display device (3).
4. A high power intermediate relay checking device according to claim 1, characterized in that the display device (3) is a non-touch liquid crystal display.
5. The high-power intermediate relay checking device as claimed in claim 1, wherein the single chip microcomputer is a PIC32 single chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121765950.5U CN215340212U (en) | 2021-07-31 | 2021-07-31 | High-power intermediate relay calibration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121765950.5U CN215340212U (en) | 2021-07-31 | 2021-07-31 | High-power intermediate relay calibration device |
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| Publication Number | Publication Date |
|---|---|
| CN215340212U true CN215340212U (en) | 2021-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121765950.5U Active CN215340212U (en) | 2021-07-31 | 2021-07-31 | High-power intermediate relay calibration device |
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| CN (1) | CN215340212U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115032491A (en) * | 2022-08-12 | 2022-09-09 | 国网山东省电力公司电力科学研究院 | Non-electric quantity protection test method for transformer |
-
2021
- 2021-07-31 CN CN202121765950.5U patent/CN215340212U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115032491A (en) * | 2022-08-12 | 2022-09-09 | 国网山东省电力公司电力科学研究院 | Non-electric quantity protection test method for transformer |
| CN115032491B (en) * | 2022-08-12 | 2022-11-01 | 国网山东省电力公司电力科学研究院 | Non-electric quantity protection test method for transformer |
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