CN211263677U - Partial discharge detection device - Google Patents
Partial discharge detection device Download PDFInfo
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- CN211263677U CN211263677U CN201921842213.3U CN201921842213U CN211263677U CN 211263677 U CN211263677 U CN 211263677U CN 201921842213 U CN201921842213 U CN 201921842213U CN 211263677 U CN211263677 U CN 211263677U
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Abstract
The utility model relates to a partial discharge detection device, which comprises a shell, a signal processing mechanism connected with the shell and a power supply mechanism connected with the signal processing mechanism; the signal processing mechanism comprises a first joint, a second joint, a signal coupling antenna respectively connected with the first joint and the second joint, a circuit board connected with the signal coupling antenna, and a signal transmitting antenna connected with the circuit board; the first connector and the second connector are respectively connected with the device to be tested through external cables; the signal coupling antenna is used for receiving signals transmitted by the first connector and the second connector; the circuit board is used for analyzing and processing signals transmitted by the signal coupling antenna; the signal transmitting antenna is used for transmitting the signal transmitted by the circuit board to external terminal equipment; the power supply mechanism is used for supplying electric energy. The signal coupling antenna of the local amplifier detection equipment sends the signals transmitted by the first joint and the second joint to the circuit board, and the circuit board sends the analyzed and processed signals to external terminal equipment through the signal transmitting antenna to obtain a test result.
Description
Technical Field
The utility model relates to a power grid line maintains technical field, especially relates to a check out test set is put in office.
Background
The high-voltage switch cabinet is an important distribution network device for supplying power to users, and insulation deterioration necessarily exists in an insulation part in the switch cabinet in long-term operation, so that the electrical insulation strength is reduced, and even a fault occurs. Partial discharge (short for partial discharge) is a main cause of insulation degradation, is an important sign and expression form of insulation degradation, is closely related to degradation of an insulation material and a breakdown process of an insulator, and can practically reflect latent defects and faults of insulation inside equipment. The partial discharge live detection technology can well diagnose the operation state and the insulation level of the switch cabinet, effectively improve the operation reliability of the switch cabinet, and has important significance for creating an intelligent power grid and promoting the construction of a first-class power distribution network.
The currently used detection method for partial discharge outside the switch cabinet, such as ultrahigh frequency, transient ground voltage, ultrasonic waves and the like, performs partial discharge state detection on the switch cabinet outside the switch cabinet, and plays an important role in timely discovering potential insulation hazards of equipment, particularly weak links of cable chambers of fully-insulated and semi-insulated switch cabinets, and improving the operation reliability of the equipment. However, in actual operation, some of the switch cabinet faults occur in the switch room of the switch cabinet, and some load switch faults occur. Because the switch chamber is of a fully-closed structure, electromagnetic waves are difficult to radiate, and the existing detection method outside the cabinet has a detection blind area.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is necessary to provide a local discharge detection device that is convenient to operate, safe and reliable.
A partial discharge detection device comprises a shell, a signal processing mechanism connected with the shell, and a power supply mechanism connected with the signal processing mechanism; the signal processing mechanism comprises a first joint, a second joint, a signal coupling antenna respectively connected with the first joint and the second joint, a circuit board connected with the signal coupling antenna, and a signal transmitting antenna connected with the circuit board; the first connector and the second connector are respectively connected with a device to be tested through external cables; the signal coupling antenna is used for receiving signals transmitted by the first connector and the second connector; the circuit board is used for analyzing and processing the signal transmitted by the signal coupling antenna; the signal transmitting antenna is used for transmitting the signal transmitted by the circuit board to external terminal equipment; the power supply mechanism is used for supplying electric energy.
The first joint and the second joint of the partial discharge detection equipment of the utility model are respectively connected with the device to be tested through cables; and the circuit board sends the analyzed and processed signals to external terminal equipment through the signal transmitting antenna, so that a test result is obtained. The local discharge detection equipment is simple in structure, convenient and fast to operate and high in reliability.
In one embodiment, the shell comprises a bottom shell and a shell connected with the bottom shell; the bottom shell comprises a first positioning piece and a second positioning piece; the first positioning piece and the second positioning piece are used for fixing the circuit board.
In one embodiment, the bottom case further includes a first stopper and a second stopper; the power supply mechanism comprises a support plate; the first limiting part and the second limiting part are used for fixing the supporting plate.
In one embodiment, the housing further comprises a non-slip rib; the anti-slip ribs are arranged on two sides of the bottom shell.
In one embodiment, the housing further comprises a fixture; the fixing piece is matched with the first positioning piece; the fixing piece is used for fastening the circuit board and the first positioning piece; the signal coupling antenna is mounted on the fixing member.
In one embodiment, the power supply mechanism comprises a battery, a power switch, a charging interface and a charging indicator; the power switch is used for controlling the operation of the battery; the charging interface is used for charging the battery; the charging indicator is used for displaying a charging state.
In one embodiment, the first joint, the second joint and the signal transmitting antenna are all convexly arranged at one end of the shell; switch, the interface that charges and charge indicator all set up in the one end that signal emission antenna was kept away from to the casing.
In one embodiment, the circuit board and the signal coupling antenna are both embedded in the shell; the first joint, the second joint and the signal transmitting antenna are all convexly arranged on the shell.
In one embodiment, the first and second connectors are BNC connectors.
In one embodiment, the device further comprises a hanging rope; the hanging rope is connected to one end, far away from the first connector, of the shell.
Drawings
Fig. 1 is an assembly structure diagram of a partial discharge detection apparatus according to an embodiment of the present invention;
fig. 2 is an exploded view of the partial discharge detection device shown in fig. 1;
fig. 3 is a schematic structural diagram of the partial discharge detection apparatus shown in fig. 1, wherein a housing is not shown.
Reference is made to the accompanying drawings in which:
a partial discharge detection device 100;
the signal processing device comprises a shell 10, a bottom shell 11, a first positioning piece 111, a second positioning piece 112, a first limiting piece 113, a second limiting piece 114, a shell 12, a fixing piece 13, an anti-skid rib 14, a signal processing mechanism 20, a first connector 21, a second connector 22, a signal coupling antenna 23, a circuit board 24 and a signal transmitting antenna 25;
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully below. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1 to fig. 3, a partial discharge detection apparatus 100 according to an embodiment of the present invention includes a housing 10, a signal processing mechanism 20 connected to the housing 10, and a power supply mechanism 30 connected to the signal processing mechanism 20; the utility model discloses a check out test set 100 is put in office receives the signal of device under test through signal processing mechanism 20, through the analysis processes back, launches outside terminal equipment, and obtains the test result.
As shown in fig. 1 and 2, in the present embodiment, the housing 10 includes a bottom shell 11 and a shell 12 connected to the bottom shell 11; the bottom case 11 includes a first positioning member 111 and a second positioning member 112; the bottom case 11 further includes a first limiting member 113 and a second limiting member 114. Optionally, the first positioning element 111 and the second positioning element 112 are located on an axial centerline of the bottom shell 11; the first limiting member 113 and the second limiting member 114 are respectively located at two sides of the bottom case 11. The housing 10 further includes a fixing member 13, and the fixing member 13 is disposed to match the first positioning member 111. In order to prevent the hands from slipping during operation, the housing 10 further comprises anti-slip ribs 14; the anti-slip ribs 14 are disposed on both sides of the bottom case 11. Further, the housing 10 is T-shaped for gripping; the bottom shell 11 is connected with the shell 12 through screws; the fixing piece 13 is a hexagonal plastic column; the housing 10 is a plastic shell.
In one embodiment, the signal processing mechanism 20 includes a first connector 21, a second connector 22, a signal coupling antenna 23 respectively connecting the first connector 21 and the second connector 22, a circuit board 24 connecting the signal coupling antenna 23, and a signal transmitting antenna 25 connecting the circuit board 24; the first connector 21 and the second connector 22 are respectively connected with a device to be tested through external cables for signal transmission; the signal coupling antenna 23 is used for receiving the signals transmitted by the first connector 21 and the second connector 22 and performing electromagnetic coupling; the circuit board 24 is used for analyzing and processing the signal transmitted by the signal coupling antenna 23; the signal transmitting antenna 25 is used to transmit the signal transmitted by the circuit board 24 to an external terminal device. Optionally, the circuit board 24 and the signal coupling antenna 23 are both disposed in the housing 10; the signal coupling antenna 23 and the signal transmitting antenna 25 are respectively connected with the circuit board 24 through cables; the first connector 21, the second connector 22 and the signal transmitting antenna 25 are all convexly arranged on the casing 10. The first positioning member 111 and the second positioning member 112 are used for fixing the circuit board 24; the fixing member 13 fastens the circuit board 24 and the first positioning member 111, and the screw fastens the circuit board 24 and the second positioning member 112. Furthermore, the first joint 21, the second joint 22 and the signal transmitting antenna 25 are all convexly arranged at one end of the casing 10; the first connector 21 and the second connector 22 are BNC connectors. The first joint 21 and the second joint 22 are respectively in threaded connection with the bottom shell 11; the signal coupling antenna 23 is mounted on the fixing member 13 by screws. In one embodiment, the device under test is a high voltage switch cabinet; the first connector 21 is connected with a grounding hole of an electrified display of the high-voltage switch cabinet through a cable, the second connector 22 is connected with an interface of the electrified display of the high-voltage switch cabinet through the cable to transmit signals, the signal coupling antenna 23 can receive signals inside the switch cabinet, the existing configuration is fully utilized, and the cost is saved. Acquiring a partial discharge signal from a nuclear phase hole of the charged display based on a pulse current method principle; the signal coupling antenna 23 is used for collecting complete discharge signals without distortion, the circuit board 24 is used for analyzing and processing partial discharge signals, the signal transmitting antenna 25 is used for transmitting the partial discharge signals to the intelligent terminal for testing, the partial discharge signal detection sensitivity is high, the totally-enclosed isolation of a switch room is broken through, faults of a switch cabinet can be found in time, the power accident prevention capacity is enhanced, the emergency response speed is increased, and a certain positive effect is achieved on improving the safe operation level of the whole power grid.
Referring to fig. 3, the power supply mechanism 30 is used for supplying power; the power supply mechanism 30 comprises a battery 31, a power switch 32, a charging interface 33 and a charging indicator 34; the power switch 32 is used for controlling the operation of the battery 31; the charging interface 33 is used for charging the battery 31; the charge indicator 34 is used to display the charge state. Optionally, the power switch 32, the charging interface 33 and the charging indicator 34 are all disposed at one end of the housing 10 away from the signal transmitting antenna 25; the battery switch 32 is in threaded connection with the bottom shell 11; the charge indicator 34 is an indicator light. After the bottom case 11 and the housing 12 are fixed, the battery 31 may be pressed and fixed. For mounting the battery 31, the power supply mechanism 30 includes a support plate 35; the first limiting member 113 and the second limiting member 114 are used for fixing the supporting plate 35; the battery 31 is mounted on the support plate 35; optionally, the supporting plate 35 is connected to the first limiting member 113 and the second limiting member 114 by screws. In order to prevent the hand from slipping and falling, the local placement detection device 100 further comprises a hanging rope 40; a lanyard 40 is attached to the end of the housing 10 remote from the first connector 21.
During the use, first joint 21 and second joint 22 are connected with the device to be tested through the cable and are carried out signal transmission, and signal coupling antenna 23 can receive the signal of device to be tested, and signal coupling antenna 23 transmits the signal received for circuit board 24, and circuit board 24 sends the signal again for terminal equipment through signal transmitting antenna 25 and tests after the analysis process to obtain the test result, solve the insulation hidden danger and detect.
The first joint 21 and the second joint 22 of the partial discharge detection apparatus 100 of the present invention are connected to the device to be tested through cables, respectively; the signals transmitted by the first connector 21 and the second connector 22 are transmitted to the circuit board 24 through the signal coupling antenna 23, and the circuit board 24 transmits the analyzed and processed signals to an external terminal device through the signal transmitting antenna 25, so as to obtain a test result. The local discharge detection equipment 100 is simple in structure, convenient and fast to operate and high in reliability.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. The partial discharge detection equipment is characterized by comprising a shell, a signal processing mechanism connected with the shell and a power supply mechanism connected with the signal processing mechanism; the signal processing mechanism comprises a first joint, a second joint, a signal coupling antenna respectively connected with the first joint and the second joint, a circuit board connected with the signal coupling antenna, and a signal transmitting antenna connected with the circuit board; the first connector and the second connector are respectively connected with a device to be tested through external cables; the signal coupling antenna is used for receiving signals transmitted by the first connector and the second connector; the circuit board is used for analyzing and processing the signal transmitted by the signal coupling antenna; the signal transmitting antenna is used for transmitting the signal transmitted by the circuit board to external terminal equipment; the power supply mechanism is used for supplying electric energy.
2. The partial discharge detection device according to claim 1, wherein the housing includes a bottom case and a housing connected to the bottom case; the bottom shell comprises a first positioning piece and a second positioning piece; the first positioning piece and the second positioning piece are used for fixing the circuit board.
3. The partial discharge detection apparatus according to claim 2, wherein the bottom case further includes a first stopper and a second stopper; the power supply mechanism comprises a support plate; the first limiting part and the second limiting part are used for fixing the supporting plate.
4. The partial discharge detection device of claim 2, wherein the housing further comprises anti-slip ribs; the anti-slip ribs are arranged on two sides of the bottom shell.
5. The partial discharge detection device of claim 2, wherein the housing further comprises a fixture; the fixing piece is matched with the first positioning piece; the fixing piece is used for fastening the circuit board and the first positioning piece; the signal coupling antenna is mounted on the fixing member.
6. The partial discharge detection device according to claim 1, wherein the power supply mechanism includes a battery, a power switch, a charging interface, and a charging indicator; the power switch is used for controlling the operation of the battery; the charging interface is used for charging the battery; the charging indicator is used for displaying a charging state.
7. The partial discharge detection device according to claim 6, wherein the first connector, the second connector and the signal transmitting antenna are all disposed at one end of the housing in a protruding manner; switch, the interface that charges and charge indicator all set up in the one end that signal emission antenna was kept away from to the casing.
8. The partial discharge detection device according to claim 1, wherein the circuit board and the signal coupling antenna are both disposed in the housing; the first joint, the second joint and the signal transmitting antenna are all convexly arranged on the shell.
9. The partial discharge detection apparatus according to claim 1, wherein the first connector and the second connector are BNC connectors.
10. The partial discharge detection device according to claim 1, further comprising a hanging rope; the hanging rope is connected to one end, far away from the first connector, of the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921842213.3U CN211263677U (en) | 2019-10-29 | 2019-10-29 | Partial discharge detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921842213.3U CN211263677U (en) | 2019-10-29 | 2019-10-29 | Partial discharge detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211263677U true CN211263677U (en) | 2020-08-14 |
Family
ID=71961935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921842213.3U Active CN211263677U (en) | 2019-10-29 | 2019-10-29 | Partial discharge detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211263677U (en) |
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2019
- 2019-10-29 CN CN201921842213.3U patent/CN211263677U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20200927 Address after: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Patentee after: Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd. Address before: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Patentee before: GUANGZHOU POWER SUPPLY Co.,Ltd. |