AU2021103450A4 - Portable fault location and inspection device for high voltage equipment based on acoustic wave method - Google Patents
Portable fault location and inspection device for high voltage equipment based on acoustic wave method Download PDFInfo
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- AU2021103450A4 AU2021103450A4 AU2021103450A AU2021103450A AU2021103450A4 AU 2021103450 A4 AU2021103450 A4 AU 2021103450A4 AU 2021103450 A AU2021103450 A AU 2021103450A AU 2021103450 A AU2021103450 A AU 2021103450A AU 2021103450 A4 AU2021103450 A4 AU 2021103450A4
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- sound
- module
- detection sensor
- microprocessor
- inspection device
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- 238000007689 inspection Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000001514 detection method Methods 0.000 claims abstract description 34
- 238000004891 communication Methods 0.000 claims description 9
- 238000001228 spectrum Methods 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 230000008859 change Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000002955 isolation Methods 0.000 abstract description 3
- 239000003990 capacitor Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000005236 sound signal Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
- G01R31/56—Testing of electric apparatus
-
- 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
- G01R31/40—Testing power supplies
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/185—Electrical failure alarms
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The invention disclose a portable fault location and inspection device for high voltage
equipment based on an acoustic wave method, which comprise a sound detection sensor
and a handheld receiver. The sound detection sensor is wirelessly connected with the
handheld receiver and wirelessly transmit the detected sound data to the handheld
receiver; according to the present invention, a time-varying sound change graph and a
time-varying frequency spectrum graph at a certain distance can be measured by a sound
detection sensor, the position of sound source with maximum vibration can be obtained
according to the frequency spectrum graph, so as to provide convenience for quickly
locating fault in power outage maintenance. The invention solves the problem of high
and low voltage physical isolation by using radio frequency technology for sound data
transmission.
1/3
FIGURES
4 3
Figure 1
FWireless transmitter
Sound pick-up electrtt - module
Ultrasonilc rangingf ocessor Battery
sensor
Indicating light
Figure 2
Description
1/3 FIGURES
4 3
Figure 1
FWireless transmitter Sound pick-up electrtt - module
Ultrasonilc rangingf ocessor Battery sensor
Indicating light
Figure 2
Portable fault location and inspection device for high voltage equipment based on
acoustic wave method
The invention relates to a portable fault location and inspection device for high
voltage equipment based on an acoustic wave method, and belongs to the technical
field of electric power detection.
For a long time, China's power industry has mostly adopted manual inspection operations
for substation equipment. Such inspection method faces great safety risks under
thunderstorm and other severe weather conditions, and conditions of high voltage or
ultra-high voltage. Moreover, strange sound appears when the operating equipment
fails, but the fault cannot be located by immediately cut off the power because the
equipment is still in operation. It can only be located during a large-scale inspection
by cutting off power for maintenance, which not only brings some hidden dangers to
the safe operation of the power grid, but also brings difficulties to the accurate
location of the failure due to the disappearance of it after cut off for maintenance.
The purpose of the present invention is to provide a portable fault location and
inspection device for high voltage equipment based on acoustic wave method. In
the prior art, the fault location cannot be located immediately for the equipment is
still in operation, and after cut off the power, the failure phenomenon disappears
due to shutdown for maintenance, which brings difficulties to the accurate location
of fault. Such defects is solved by the present invention.
A portable fault location and inspection device for high voltage equipment based
on acoustic wave method comprises a sound detection sensor and a handheld
receiver;
The sound detection sensor is wirelessly connected with the handheld receiver;
The sound detection sensor wirelessly transmits the detected sound data to the
handheld receiver.
Preferably, the sound detection sensor comprises a sound pickup, a wireless
transmitter module, a microprocessor, an ultrasonic ranging sensor and a working
power supply; The output ends of both the pickup and ultrasonic ranging sensor are
respectively connected with the input end of the microprocessor, and the input end
of the wireless transmitter module is connected with the communication interface
of the microprocessor; And the output end of the working power supply is
connected with the power supply end of the microprocessor.
Preferably, the sound pick-up adopts electret which is installed at the top of the
sound detector.
Preferably, the handheld receiver comprises a wireless receiving module, a
microprocessor located at receiving end, a storage module, a power module and a
display module; The input end of the display module is connected with the output
end of the microprocessor, the input end of the wireless receiving module is
connected with the communication interface of the microprocessor located at
receiving end, the input end of the storage module is connected with the interface
of the microprocessor located at receiving end, and the output end of the power module is connected with the power interface of the microprocessor located at receiving end.
Preferably, the handheld receiver further comprises a clock module, and the output
end of the clock module is connected with the interface of the microprocessor
lovated at the receiving end.
Preferably, the sound detection sensor is connected with an insulating rod, an
pressure equalizing cover sleeved outside the sound detection sensor, and the
pressure equalizing cover is covered with an insulating shell on the outside.
Compared with the prior art, the invention has the following beneficial effects:
1) According to the present invention, a time-varying sound change graph and a
time-varying frequency spectrum graph at a certain distance can be measured by a
sound detection sensor, the position of sound source with maximum vibration can
be obtained according to the frequency spectrum graph, therefore identify the
position of vibration fault of high voltage equipment.
2) It can detect the location of the abnormal vibration fault of the high voltage
equipment while it is still in operation, and provide convenience for the quick
lovation of the fault for the power outage maintenance;
3) The invention solves the problem of high and low voltage physical isolation by
using radio frequency technology for sound data transmission.
Fig.1 is the schematic structural diagram of the portable fault location and
inspection device for high voltage equipment based on acoustic wave method;
Fig.2 is a schematic structural diagram of a sound detection device;
Fig.3 is a schematic block diagram of a handheld receiver
Fig.4 is a logic program diagram of the handheld receiver
In the picture: 1, Insulation rod; 2, Sound detection sensor; 3, Insulation shell; 4,
Pressure equalizing cover; 5, Handheld receiver.
In order to make the technical means, creative features, purpose and effects of the
present invention easy to understand, the present invention will be further
explained with specific embodiments.
As shown in fig.1 to fig.4, a portable fault location and inspection device for high
voltage equipment based on acoustic wave method is disclosed, which comprises a
sound detection sensor 2 and a handheld receiver 5;
The sound detection sensor 2 is wirelessly connected with the handheld receiver 5;
The sound detection sensor 2 wirelessly transmits the detected sound data to the
handheld receiver 5 .
The sound data is transmitted between the sound detection sensor and handheld
receiver through radio frequency technology, which solves the problem of high and
low voltage physical isolation; During actual use, the sound detection sensor 2 is
fixed on the insulating rod 1, and the insulating rod 1 comes near to the high
voltage charged equipment for measurement. As for detecting, the sound detection
sensor 2 can find the position of the maximum sound and the distance between the
sound detection sensor 2 and the measured high-voltage equipment.
The sound detection sensor 2 comprises a sound pickup, a wireless transmission
module, a microprocessor, an ultrasonic ranging sensor and a working power
supply; Output ends of the sound pickup and the ultrasonic ranging sensor are
respectively connected with the input end A/D of the microprocessor, and the input
end of the wireless transmission module is connected with the corresponding
communication interface of the microprocessor. The output end of the working
power supply is connected with the corresponding power supply end of the
microprocessor, and the sound detection sensor 2 can measure the time-varying
diagram and spectrum diagram of the sound at a certain distance; The sound
detection sensor comprises an insulating shell 3, a voltage equalizing cover 4 and
an insulating rod 1; The sound detection sensor 2 is covered with a voltage
equalizing cover 4, then placed inside the insulating shell 3, and then fixed on the
insulating rod 1. The voltage equalizing cover 4 is made of copper with a thickness
of 0.2 mm, which is continuously welded, and it is required to make reliable
contact with the negative terminal of the working power supply by a spring to form
an isoelectric level. The sound detection sensor 2 can find the position of fault
vibration of high voltage equipment in substation by using the method of
identifying sound, that is, identify the sound below the range of 40kH, obtain
sound signals and draw sound spectrum.
The sound pickup adopts electret, which is installed on the top of the sound
detection sensor 2. Based on physics knowledge, the capacitance C of the plate
capacitor is related to the relative area A of the capacitor, the dielectric constantc
and the distance d between the two plates, that is: C=A/d, when the plate capacitor is charged with a certain electric charge Q, there is a certain voltage V between the two plates, then there is C=Q/V; There is a capacitor composed of diaphragm, gasket and polar plate inside electret. The diaphragm is filled with electric charge and is a plastic diaphragm. The diaphragm vibrates under the action of acoustic pressure, thus changing the distance between diaphragm and polar plate and the distance between two polar plates of capacitor, resulting in the change of capacitance. Due to the constant charge, the voltage difference between the two plates changes. This is the conversion of sound signals to electrical signals.
However, it is a very weak signal with very high internal resistance and can not be
used directly. It is required to perform impedance transformation and signal
amplification which can be achieved by voltage-controlled FET.
The handheld receiver 5 includes a display module, a wireless receiving module, a
microprocessor located at receiving end, a clock module and a storage module, a
power module and key module; The input end of the display module is connected
with the I/O port of the output end of the microprocessor; The input end of the
wireless receiving module is connected with the corresponding communication
interface of the microprocessor located at the receiving end; And the output end of
the clock module is connected with the corresponding I/O port of the
microprocessor located at the receiving end; The input end of the storage module is
connected with the corresponding I/O port of the microprocessor located at the
receiving end; The output end of the key module is connected with the
corresponding input I/O port of the microprocessor located at the receiving end;
And the output end of the power module is connected with the corresponding
power interface of the microprocessor located at the receiving end.
After the handheld receiver 5 switch is pressed and powered on, the memory chip
in the storage module, the timer on the clock module, the liquid crystal display on
the display module, the key module, the software watchdog and other parts of the
program are initialized and configured with different pin, set the interrupt priority
at the same time, start to scan the keys after entering the program, there are four
options (performance detection, communication self-check, local settings and
history query);
Select the performance option to query and display the time-varying sound signal
graph and sound spectrum graph; select the communication self-check option to
judge whether the communication between the sound detection sensor 2 and the
handheld receiver 5 is running well; select the local setting option to switch on or
off the buzzer, change time calibration(used for manual calibration); select the
history query option to query the previously saved data and delete them at any
time.
The above is only the preferred embodiment of the present invention. For those of
ordinary skill in the technical field, it should be noted that there are still several
improvements and modifications that can be made without departing from the
technical principle of the present invention, and the several improvements and
modifications should also be regarded as the protection scope of the present
invention.
Claims (6)
1. A portable fault location and inspection device for high voltage equipment based
on sound wave method, characterized by comprising sound detection sensor and
handheld receiver;
The sound detection sensor is wirelessly connected with the handheld receiver;
The sound detection sensor wirelessly transmits the detected sound data to the
handheld receiver.
2. A portable fault location and inspection device for high-voltage equipment based
on acoustic wave method according to claim 1, characterized in that the sound
detection sensor comprises a sound pickup, a wireless transmitter module, a
microprocessor, an ultrasonic ranging sensor and a working power supply; The
output ends of both the pickup and ultrasonic ranging sensor are respectively
connected with the input end of the microprocessor, and the input end of the
wireless transmitter module is connected with the communication interface of the
microprocessor; And the output end of the working power supply is connected with
the power supply end of the microprocessor.
3. A portable fault location and inspection device for high-voltage equipment based
on acoustic wave method according to claim 2, characterized in that the sound
pick-up adopts electret which is installed at the top of the sound detector.
4. A portable fault location and inspection device for high voltage equipment based
on acoustic wave method according to claim 1, characterized in that the handheld
receiver comprises a wireless receiving module, a microprocessor located at
receiving end, a storage module, a power supply module and a display module; The input end of the display module is connected with the output end of the microprocessor, the input end of the wireless receiving module is connected with the communication interface of the microprocessor located at receiving end, the input end of the storage module is connected with the interface of the microprocessor located at receiving end, and the output end of the power module is connected with the power interface of the microprocessor located at receiving end.
5. A portable fault location and inspection device for high voltage equipment based
on acoustic wave method according to claim 1, wherein the handheld receiver
further comprises a clock module, and the output end of the clock module is
connected with the interface of the microprocessor at the receiving end.
6. A portable fault location and inspection device for high-voltage equipment based
on acoustic wave method according to claim 1, characterized in that the sound
detection sensor is connected with an insulating rod, an pressure equalizing cover
sleeved outside the sound detection sensor, and the pressure equalizing cover is
covered with an insulating shell on the outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2021103450A AU2021103450A4 (en) | 2021-06-18 | 2021-06-18 | Portable fault location and inspection device for high voltage equipment based on acoustic wave method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2021103450A AU2021103450A4 (en) | 2021-06-18 | 2021-06-18 | Portable fault location and inspection device for high voltage equipment based on acoustic wave method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2021103450A4 true AU2021103450A4 (en) | 2021-08-12 |
Family
ID=77195584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2021103450A Ceased AU2021103450A4 (en) | 2021-06-18 | 2021-06-18 | Portable fault location and inspection device for high voltage equipment based on acoustic wave method |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU2021103450A4 (en) |
-
2021
- 2021-06-18 AU AU2021103450A patent/AU2021103450A4/en not_active Ceased
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGI | Letters patent sealed or granted (innovation patent) | ||
| MK22 | Patent ceased section 143a(d), or expired - non payment of renewal fee or expiry |