CN110658452A - Non-electric power relay calibration device - Google Patents
Non-electric power relay calibration device Download PDFInfo
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- CN110658452A CN110658452A CN201911123366.7A CN201911123366A CN110658452A CN 110658452 A CN110658452 A CN 110658452A CN 201911123366 A CN201911123366 A CN 201911123366A CN 110658452 A CN110658452 A CN 110658452A
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- chip microcomputer
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
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- Measurement Of Current Or Voltage (AREA)
Abstract
The invention relates to a non-electric power relay calibration device, which comprises an alternating current/direct current power supply converter, a current and voltage detection module, a single chip microcomputer system module and a display, wherein the alternating current/direct current power supply converter is connected with the single chip microcomputer system module; the alternating current/direct current power supply converter, the current and voltage detection module and the display are sequentially and electrically connected, the power supply data converted by the alternating current/direct current power supply converter is detected by the current and voltage detection module to be displayed on the display, and meanwhile, the current and voltage detection module is electrically connected with the single chip microcomputer system module; the single chip microcomputer system module is also electrically connected with a display, and the display displays the power calculated by the single chip microcomputer system module; the alternating current/direct current power converter is also electrically connected with a non-electric power relay to be tested, and the non-electric power relay is also electrically connected with the single chip microcomputer system module; and when the to-be-tested non-electric quantity power relay acts, the singlechip system module stops power calculation. When the work time is reduced, the work efficiency is improved, and meanwhile, the flow is simplified.
Description
Technical Field
The invention relates to the technical field of transformer protection, in particular to a non-electric power relay calibration device.
Background
The non-electric quantity protection refers to protection of fault action or signaling reflected by non-electric quantity, and generally refers to that the criterion of protection is not electric quantity (current, voltage, frequency, impedance and the like), but non-electric quantity, such as gas protection (through oil speed setting), temperature protection (through temperature height), pressure protection, oil level protection, cooler full stop protection and the like. A power relay is a device that generates a transition in one or more electrical output circuits when an input (or actuation) meets certain specified conditions. The neutral point direct grounding system can be used for a neutral point direct grounding system and is used as a directional element for zero sequence current protection.
Non-electrical protection is one of the important protection of transformer protection, and reflects the protection action caused or transmitted by non-electrical fault. Because the high-power relay in the transformer is easily interfered by external signals due to the overlong loop of the cable in the station and the larger coupling capacitor, the relay malfunctions to trigger protection action. In order to avoid the false operation, before the transformer is put into operation for the first time, the action power of the power relay in the transformer needs to be verified, the final action power is required to be larger than 5 watts, the verification working process is complex, and more personnel are matched, so that a large amount of work is brought to the work of relay protection workers on site
Disclosure of Invention
In order to solve the technical problem, the invention provides a non-electric power relay checking device.
In order to achieve the purpose, the invention adopts the following technical scheme:
a non-electric power relay calibration device comprises an alternating current/direct current power supply converter, a current and voltage detection module, a single chip microcomputer system module and a display; the alternating current/direct current power supply converter, the current and voltage detection module and the display are sequentially and electrically connected, the power supply data converted by the alternating current/direct current power supply converter is detected by the current and voltage detection module and displayed on the display, meanwhile, the current and voltage detection module is electrically connected with the single chip microcomputer system module, and the current and voltage detection module transmits the detected voltage and current data to the single chip microcomputer system module for calculating power; the single chip microcomputer system module is also electrically connected with a display, and the display displays the power calculated by the single chip microcomputer system module; the alternating current/direct current power converter is also electrically connected with a non-electric power relay to be tested, and the non-electric power relay is also electrically connected with the single chip microcomputer system module; and when the to-be-tested non-electric quantity power relay acts, the singlechip system module stops power calculation.
Further, the AC/DC power converter is externally connected with a 220V AC power supply.
Further, the single chip microcomputer system module is an AT89S52 single chip microcomputer.
Furthermore, the test wire used for electric connection of the checking device is a plug-in banana terminal.
Further, the display comprises a human-computer interaction module.
By using the calibration device, only a power supply test line and the non-electric power relay to be tested are connected, and one person can complete the calibration work; complicated element connection is avoided, and observation and recording work is reduced.
Has the advantages that: the working time is reduced, the working efficiency is improved, and the flow is simplified; the waste of personnel is reduced, and the workload is reduced; under the condition of normal alternating current, the power relay test is safer, more reliable and more efficient.
Drawings
FIG. 1 is a schematic diagram of a calibration device according to the present invention;
fig. 2 is a schematic diagram of the sampling logic of the single chip microcomputer system module.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples.
Required personnel are more when carrying out transformer and just throwing in traditional check-up working process, because team personnel are limited, the time limit for a project is tight, and work load is big, and it is more to occupy the staff during the check-up, influences whole job schedule. The required equipment is more, including 1 power panel, one relay protection tester, two universal meters, test wire a plurality of. The process is complicated, consumes time and labor, and requires 1 person to adjust the power size, 1 person or 2 persons to record the current and voltage when the relay acts, and 1 person to observe the non-electric quantity protection action lamp. The method comprises the following steps: adjusting a power supply, observing protection actions, recording current and voltage and calculating power; the method specifically comprises the following steps: the power supply is adjusted, when the non-electric quantity protection indicator lamp is on, current and voltage observers are immediately informed, the current and the voltage during action are recorded, then the power is calculated, and whether the relay power meets the regulation requirements or not is further judged.
Fig. 1 of the present embodiment shows a non-electric power relay calibration apparatus, which includes an ac/dc power converter, a current and voltage detection module, a single chip system module, and a display; the alternating current/direct current power supply converter, the current and voltage detection module and the display are sequentially and electrically connected, the power supply data converted by the alternating current/direct current power supply converter is detected by the current and voltage detection module and displayed on the display, meanwhile, the current and voltage detection module is electrically connected with the single chip microcomputer system module, and the current and voltage detection module transmits the detected voltage and current data to the single chip microcomputer system module for calculating power; the single chip microcomputer system module is also electrically connected with a display, and the display displays the power calculated by the single chip microcomputer system module; the alternating current/direct current power converter is also electrically connected with a non-electric power relay to be tested, and the non-electric power relay is also electrically connected with the single chip microcomputer system module; and when the to-be-tested non-electric quantity power relay acts, the singlechip system module stops power calculation. The sampling logic diagram of the singlechip system module is shown in figure 2.
The alternating current/direct current power converter is externally connected with a 220V alternating current power supply, the output voltage fluctuation is less than or equal to +/-5%, the continuous power supply is good, and the use is reliable; the single chip microcomputer system module is an AT89S52 single chip microcomputer, and has the advantages of high compatibility, high programmability, strong operability, simple structure, easy mastering and high cost performance; the display comprises a human-computer interaction module, and is a nixie tube display, so that the display is economical and can meet the requirements.
The testing wire that the calibration equipment is used for the electricity to connect is plug-in banana terminal, and the plug chooses for use the columnar plug.
By using the calibration device, only a power supply test line and the non-electric power relay to be tested are connected, and one person can complete the calibration work; complicated element connection is avoided, and observation and recording work is reduced.
The checking device of the non-electric power relay carries out checking work under the condition of single-person work, the total work time is shortened from the original 49.24min to 10.24min, the power relay can act by using the traditional method and the checking device, the data measured by the two devices are compared, and the error rate is less than 5%.
In conclusion, the invention has the following obvious advantages: the working time is reduced, the working efficiency is improved, and the flow is simplified; the waste of personnel is reduced, and the workload is reduced; under the condition of normal alternating current, the power relay test is safer, more reliable and more efficient.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution of the present invention and its inventive concept within the technical scope of the present invention.
Claims (5)
1. A non-electric power relay calibration device is characterized by comprising an AC/DC power supply converter, a current and voltage detection module, a single chip microcomputer system module and a display; the alternating current/direct current power supply converter, the current and voltage detection module and the display are sequentially and electrically connected, the power supply data converted by the alternating current/direct current power supply converter is detected by the current and voltage detection module and displayed on the display, meanwhile, the current and voltage detection module is electrically connected with the single chip microcomputer system module, and the current and voltage detection module transmits the detected voltage and current data to the single chip microcomputer system module for calculating power; the single chip microcomputer system module is also electrically connected with a display, and the display displays the power calculated by the single chip microcomputer system module; the alternating current/direct current power converter is also electrically connected with a non-electric power relay to be tested, and the non-electric power relay is also electrically connected with the single chip microcomputer system module; and when the to-be-tested non-electric quantity power relay acts, the singlechip system module stops power calculation.
2. The non-electrical power relay verification device of claim 1, wherein the ac/dc power converter is externally connected to a 220V ac power source.
3. The non-electric power relay checking device according to claim 1, wherein the single chip microcomputer system module is an AT89S52 single chip microcomputer.
4. The non-electric power relay verification device according to claim 1, wherein the test wire for electrical connection of the verification device is a pluggable banana terminal.
5. The non-electrical power relay verification device of claim 1, wherein the display comprises a human-machine interaction module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911123366.7A CN110658452A (en) | 2019-11-16 | 2019-11-16 | Non-electric power relay calibration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911123366.7A CN110658452A (en) | 2019-11-16 | 2019-11-16 | Non-electric power relay calibration device |
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| Publication Number | Publication Date |
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| CN110658452A true CN110658452A (en) | 2020-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911123366.7A Pending CN110658452A (en) | 2019-11-16 | 2019-11-16 | Non-electric power relay calibration device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112748333A (en) * | 2020-12-25 | 2021-05-04 | 海南电网有限责任公司琼海供电局 | Relay action characteristic rapid testing device |
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2019
- 2019-11-16 CN CN201911123366.7A patent/CN110658452A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112748333A (en) * | 2020-12-25 | 2021-05-04 | 海南电网有限责任公司琼海供电局 | Relay action characteristic rapid testing device |
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