CN107015097B - Single wireless measuring device of ground connection downlead conductivity - Google Patents
Single wireless measuring device of ground connection downlead conductivity Download PDFInfo
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- CN107015097B CN107015097B CN201710292652.0A CN201710292652A CN107015097B CN 107015097 B CN107015097 B CN 107015097B CN 201710292652 A CN201710292652 A CN 201710292652A CN 107015097 B CN107015097 B CN 107015097B
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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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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Abstract
The invention discloses a single-person wireless measuring device for the conductivity of a grounding down lead, which comprises a main testing device and a handheld terminal, wherein the main testing device and the handheld terminal are in wireless connection through a wireless transmission module; the main test equipment is internally provided with a main test module, and the handheld terminal comprises a microprocessor, a handheld terminal switch key, a micropore camera, a wireless receiving device and a handheld terminal navigation key. The real-time test data is transmitted from the main test equipment to the handheld terminal of the worker in a wireless communication mode, the handheld terminal can take pictures of the running numbers of the power equipment, then the OCR character recognition software in the microprocessor can recognize and record the running numbers of the equipment at the test points in the first time, the running numbers of the equipment automatically correspond to the data transmitted in a wireless mode one by one, and the test record table is automatically generated. The testing device realizes that only one worker independently and efficiently completes the test of the conductivity between the grounding down lead of the transformer substation grounding device and the main ground network.
Description
Technical Field
The invention relates to the technical field of measuring the conductivity between a grounding down lead and a main grounding of electric equipment, in particular to a single-person wireless measuring device for the conductivity of the grounding down lead.
Background
At present, whether the conduction state between the power equipment grounding down lead and the main grounding is good or not plays an important role in the safe operation of a power system. When the system has a short circuit fault or is struck by lightning, the local potential of the ground grid is raised, and the safety of personnel and equipment is greatly threatened. The grounding device provides a common reference ground for various electrical equipment in the station, and the good conduction state between the grounding down lead of the electrical equipment and the main ground can ensure that fault current or working current quickly leaks into the ground, inhibit the current from flowing into the maximum potential rise near the ground, and ensure the safety of human bodies and equipment.
And carrying out conductivity test between the grounding down lead of the power equipment of the transformer substation and the main grounding by the operation and maintenance maintainer of the transformer substation according to the maintenance period specified by the relevant regulations so as to judge the quality of the conductivity. In the conventional test, similar to the measurement of the direct current resistance of a conductor, a voltage-current method is generally adopted to inject direct current for testing. The method needs at least two workers to complete, wherein one worker is in front of the main test equipment and is responsible for clamping a test reference point (negative pole), operating the main test equipment, reading and recording running numbers and conductivity test data of equipment with different test points and commanding another person to exchange for different test points; and the other worker is responsible for clamping different test points (anodes), reporting the running serial number of the equipment for the test worker and continuously moving the positions of the test points (anodes). Therefore, the maintenance is not only low in testing efficiency (some large transformer substation measuring points are often hundreds of thousands, and the process of recording the operation number of each device and commanding and replacing the measuring points is very time-consuming), but also due to the fact that the distance between the measuring points and the host computer is far away, a worker is likely to have false alarm in the oral information transmission process, so that errors are caused, and the testing efficiency and the result accuracy are greatly influenced.
Disclosure of Invention
The invention aims to provide a single-person wireless measuring device for conductivity of a grounding downlead, which can realize that one worker can independently and efficiently complete a test on the conductivity between the grounding downlead of a transformer substation grounding device and a main ground network, saves human resources, simultaneously furthest ensures that a test result is not influenced by external environmental factors, and greatly improves the efficiency and accuracy of the test.
The technical scheme adopted by the invention is as follows:
a single wireless measuring device for the conductivity of a grounding down lead comprises a main testing device 2 and a handheld terminal 3 which are in wireless connection through a wireless transmission module; the main test device 2 is internally provided with a main test module 1, the main test device 2 is internally provided with two test line clamps, namely a negative test line clamp 4 connected to a test reference point and a positive test line clamp 5 connected to different power device grounding down lead test points, the main test module 1, the negative test line clamp 4 and the positive test line clamp 5 jointly form a test loop for measuring the electrical conductivity between different power device grounding down leads and a main grounding grid, and the main test device 2 is also provided with a switch key 7, a wireless device switch key 8, a device grounding 6, a main test device charging hole 10, a wireless transmitting device 13 and a first display screen;
the handheld terminal 3 comprises a microprocessor, a handheld terminal switch key 11, a microporous camera 12 arranged at the upper right corner of the handheld terminal 3 and used for shooting the running number of the power equipment to be tested, a wireless receiving device 14, a second display screen 17 arranged above the front of the handheld terminal 3, a handheld terminal navigation key 18 arranged below the front of the handheld terminal 3, a USB socket 19 arranged on the side face of the handheld terminal 3 and a handheld terminal charging hole 16, wherein the output end of the microporous camera 12 is connected with the input end of the microprocessor, and the output ends of the handheld terminal navigation key 18 and the wireless receiving device are also respectively connected with the input end of the microprocessor; the output end of the microprocessor is connected with the input end of the second display screen 17; the wireless transmitting device 1 and the wireless receiving device 14 are connected wirelessly,
and the positive test wire clamp 5 is connected with the main test equipment 2 through an automatic wire returning mechanism.
OCR character recognition software is integrated in the microprocessor.
The real-time test data is transmitted from the main test equipment to the handheld terminal of the worker in a wireless communication mode, the handheld terminal has a photographing function, the running numbers of the power equipment can be recognized and recorded at the first time through photographing and then OCR character recognition software in the microprocessor, and the running numbers of the equipment at the test points can be automatically and correspondingly recorded with the data transmitted wirelessly one by one to automatically generate the test record table. After the power equipment identity identification technology is mature, the handheld terminal can be designed to be a handheld reader-writer combined with the RFID technology, the power equipment operation number is quickly read and recorded, and then the test record table is automatically generated in a one-to-one correspondence mode with the data transmitted wirelessly. The testing process is accurate and rapid in the use of the device, more human resources for testing the type are saved, the testing result is guaranteed to be free from the influence of external environment factors to the maximum extent, the testing efficiency and accuracy are greatly improved, and the testing test of the conductivity between the grounding down lead of the grounding device of the transformer substation and the main ground grid can be efficiently completed by one worker alone.
Drawings
FIG. 1 is a schematic block diagram of the structure of the present invention
In the figure: 1. the main test module, 2, main test equipment, 3, handheld terminal, 4, negative test line clamp, 5, positive test line clamp, 6, equipment ground, 7, main test equipment switch key, 8, wireless device switch key, 9, main test equipment residual capacity display screen, 10, main test equipment charging hole, 11, handheld terminal switch key, 12, micropore camera, 13, wireless transmitting device, 14, wireless receiving device, 15, handheld terminal residual capacity display screen, 16, handheld terminal charging hole, 17, display screen, 18, handheld terminal navigation key, 19, USB socket.
Detailed Description
As shown in fig. 1, the present invention includes a main test device 2 and a handheld terminal 3, which are wirelessly connected through a wireless transmission module; the main testing device 2 is internally provided with a main testing module 1, the main testing device 2 is internally provided with two testing line clamps, namely a negative testing line clamp 4 connected to a testing reference point and a positive testing line clamp 5 connected to different power device grounding down lead testing points, the main testing module 1, the negative testing line clamp 4 and the positive testing line clamp 5 jointly form a testing loop for measuring the electrical conductivity between different power device grounding down leads and a main grounding grid, and the main testing device 2 is also provided with a switch key 7, a wireless device switch key 8, a device grounding 6, a main testing device charging hole 10, a wireless transmitting device 13 and a first display screen;
the handheld terminal 3 comprises a microprocessor, a handheld terminal switch key 11, a microporous camera 12 arranged at the upper right corner of the handheld terminal 3 and used for shooting the running number of the power equipment to be tested, a wireless receiving device 14, a second display screen 17 arranged above the front of the handheld terminal 3, a handheld terminal navigation key 18 arranged below the front of the handheld terminal 3, a USB socket 19 arranged on the side surface of the handheld terminal 3 and a handheld terminal charging hole 16, wherein the output end of the microporous camera 12 is connected with the input end of the microprocessor, and the output ends of the handheld terminal navigation key 18 and the wireless receiving device are also respectively connected with the input end of the microprocessor; the output end of the microprocessor is connected with the input end of the second display screen 17; the wireless transmitting device 1 and the wireless receiving device 14 are wirelessly connected,
the positive test wire clamp 5 is connected with the main test equipment 2 through an automatic wire returning mechanism, the automatic wire returning mechanism is a mechanical spring type wire returning mechanism, the automatic wire returning mechanism is the prior known technology and is not repeated herein, and other electric wire returning mechanisms can realize that the positive test wire clamp 5 freely extends and stretches when in use, change the distance and automatically return and adjust when not in use.
Before the test is started, a tester connects the equipment ground 6 of the main test equipment 2, the negative test wire clamp 4 is connected to the ground down lead of the test reference point, and after the switch key 7 of the main test equipment is started, the switch key 8 of the wireless device is started, and at the moment, the wiring work at the test reference point is finished. The main test equipment 2 can observe the residual capacity through the main test equipment residual capacity display screen 9, and when the capacity is insufficient, equipment charging can be carried out through the main test equipment charging hole 10.
After the wiring work at the test reference point is finished, a tester holds a handheld terminal 3 to come to a test point of a grounding down lead of the power equipment, a positive test line clamp 5 is connected to the grounding down lead of the power equipment at the test point, the handheld terminal 3 is started through a handheld terminal switch key 11, a micropore camera 12 is arranged at the upper right corner of the handheld terminal 3 and used for shooting the running number of the power equipment to be tested, characters in a picture are identified and recorded through OCR character identification software in a microprocessor inside the handheld terminal 3, at the moment, data measured from a main test device 2 are transmitted to the handheld terminal 3 through a wireless transmitting device 13 of the main test device 2 and are received by a wireless receiving device 14 of the handheld terminal 3 and then enter the microprocessor, and the microprocessor identifies the recorded running number of the test point equipment, automatically corresponds to the data transmitted wirelessly one by one to one, and automatically generates a test record table. A display screen 17 is arranged above the front face of the handheld terminal 3 and used for displaying the recording conditions of the measured data and the running numbers of the test point equipment. A handheld terminal navigation key 18 is arranged below the front surface of the handheld terminal 3 and is responsible for the operation of the handheld terminal interface. The hand-held terminal 3 is provided with a USB socket 19 on the side surface, and the recorded data can be led out of the device after the test is finished. The handheld terminal 3 can observe the residual capacity through the handheld terminal residual capacity display screen 15, and when the capacity is insufficient, the device can be charged through the handheld terminal charging hole 16.
After the measurement of the ground down lead test point of the power equipment is completed, the tester checks and stores the data, and the positive test wire clamp 5 is replaced to the next test point without changing the state of the main test equipment 2. After the test of the test points in all the test ranges near the reference point is finished, the tester selects the position of the next reference point again, and the operation is restarted.
The above-described embodiments are intended to illustrate rather than to limit the invention, and all changes and modifications that come within the spirit of the invention and the scope of the appended claims are intended to be embraced therein.
Claims (3)
1. The utility model provides a single wireless measuring device of ground connection downlead conductivity which characterized in that: the system comprises a main test device (2) and a handheld terminal (3), wherein the main test device and the handheld terminal are in wireless connection through a wireless transmission module; the main testing device (2) is internally provided with a main testing module (1), two testing wire clamps are arranged on the main testing device (2), namely a negative testing wire clamp (4) connected to a testing datum point and a positive testing wire clamp (5) connected to different power equipment ground down lead testing points, the main testing module (1), the negative testing wire clamp (4) and the positive testing wire clamp (5) jointly form a testing loop, the electrical conductivity between different power equipment ground down leads and a main grounding grid is measured, and the main testing device (2) is further provided with a switch key (7), a wireless device switch key (8), a device grounding (6), a main testing device charging hole (10), a wireless transmitting device (13) and a first display screen;
the handheld terminal (3) comprises a microprocessor, a handheld terminal switch key (11), a micropore camera (12) which is arranged at the upper right corner of the handheld terminal (3) and used for shooting the running number of the power equipment to be tested, a wireless receiving device (14), a second display screen (17) arranged above the front face of the handheld terminal (3), a handheld terminal navigation key (18) arranged below the front face of the handheld terminal (3), a USB socket (19) and a handheld terminal charging hole (16) which are arranged on the side face of the handheld terminal (3), wherein the output end of the micropore camera (12) is connected with the input end of the microprocessor, and the output ends of the handheld terminal navigation key (18) and the wireless receiving device are also respectively connected with the input end of the microprocessor; the output end of the microprocessor is connected with the input end of a second display screen (17); the wireless transmitting device (1) is wirelessly connected with the wireless receiving device (14).
2. The single-person wireless measurement device of ground lead conductivity according to claim 1, characterized in that: and the positive test wire clamp (5) is connected with the main test equipment (2) through an automatic wire returning mechanism.
3. The single-person wireless measurement device of ground lead conductivity according to claim 2, characterized in that: OCR character recognition software is integrated in the microprocessor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710292652.0A CN107015097B (en) | 2017-04-28 | 2017-04-28 | Single wireless measuring device of ground connection downlead conductivity |
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| CN201710292652.0A CN107015097B (en) | 2017-04-28 | 2017-04-28 | Single wireless measuring device of ground connection downlead conductivity |
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| CN107015097A CN107015097A (en) | 2017-08-04 |
| CN107015097B true CN107015097B (en) | 2023-04-07 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109116118A (en) * | 2018-09-03 | 2019-01-01 | 国网湖南省电力有限公司 | A kind of earth-continuity self-operated measuring unit and its application method |
| CN109100604A (en) * | 2018-10-09 | 2018-12-28 | 广东电网有限责任公司 | A kind of earth-return circuit continuity test system |
| CN109100573A (en) * | 2018-10-09 | 2018-12-28 | 广东电网有限责任公司 | A kind of earthing test handheld terminal |
| CN109061313A (en) * | 2018-10-10 | 2018-12-21 | 潍坊市九易通电器有限公司 | A kind of detection earth resistance system |
| CN111190053A (en) * | 2020-01-16 | 2020-05-22 | 青岛地铁集团有限公司运营分公司 | Metro vehicle overlapping penetration line detection device |
| CN113176438A (en) * | 2021-04-15 | 2021-07-27 | 国网湖北省电力有限公司宜昌供电公司 | Transformer substation secondary circuit detector and detection method |
| CN114148834A (en) * | 2021-12-07 | 2022-03-08 | 广东电网有限责任公司 | Underground lead conduction tester and testing system |
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| CN201965184U (en) * | 2010-12-28 | 2011-09-07 | 西安亚能电气有限责任公司 | Split type grounding downlead conduction resistance test instrument |
| WO2014190635A1 (en) * | 2013-05-31 | 2014-12-04 | 中兴通讯股份有限公司 | Wireless charging method and apparatus for handheld mobile terminal |
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- 2017-04-28 CN CN201710292652.0A patent/CN107015097B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201965184U (en) * | 2010-12-28 | 2011-09-07 | 西安亚能电气有限责任公司 | Split type grounding downlead conduction resistance test instrument |
| WO2014190635A1 (en) * | 2013-05-31 | 2014-12-04 | 中兴通讯股份有限公司 | Wireless charging method and apparatus for handheld mobile terminal |
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