CN114280384A - Method for electrified detection of electrical defects of composite insulator string of overhead transmission line - Google Patents
Method for electrified detection of electrical defects of composite insulator string of overhead transmission line Download PDFInfo
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- CN114280384A CN114280384A CN202111325501.3A CN202111325501A CN114280384A CN 114280384 A CN114280384 A CN 114280384A CN 202111325501 A CN202111325501 A CN 202111325501A CN 114280384 A CN114280384 A CN 114280384A
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- 238000001514 detection method Methods 0.000 title claims abstract description 87
- 239000012212 insulator Substances 0.000 title claims abstract description 62
- 230000005540 biological transmission Effects 0.000 title claims abstract description 39
- 239000002131 composite material Substances 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 33
- 230000007547 defect Effects 0.000 title claims abstract description 24
- 238000009413 insulation Methods 0.000 claims abstract description 49
- 230000005684 electric field Effects 0.000 claims abstract description 38
- 238000012360 testing method Methods 0.000 claims abstract description 19
- 238000012545 processing Methods 0.000 claims description 12
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 7
- 238000007689 inspection Methods 0.000 description 4
- 229910052573 porcelain Inorganic materials 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009194 climbing Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention relates to a method for electrified detection of electrical defects of a composite insulator string of an overhead transmission line, wherein a detection device comprises an insulation guide cover, a detection assembly, an insulation operating rod and a mobile phone terminal, wherein the detection assembly comprises a mounting box and a control panel, and an electric field sensor is arranged on the mounting box; the invention has the advantages that: because electric field sensor sets up and installs on insulating guide housing through the mounting box, consequently can real-time continuous measurement composite insulator chain's electric field strength, and insulating guide housing can make in the testing process laminate with the full skirt border all the time, ensure the accuracy of testing result, and transmit to cell-phone terminal through wireless transmission module, thereby make the measurement data of acquireing that the measurement personnel can be quick, and can form the distribution curve of "electric field strength-full skirt number" through the full skirt number of measurement data and composite insulator chain, make things convenient for the measurement personnel to judge defect position and length information through electric field strength value distribution rule.
Description
Technical Field
The invention relates to a method for detecting electrical defects of a composite insulator string of an overhead transmission line in an electrified manner.
Background
The composite insulator has good weather self-cleaning property, high tensile strength of the core rod and short length under the same voltage level, can greatly reduce the labor intensity of workers in transportation and construction operation, and has the advantages of reducing the size of an iron tower and reducing the construction cost, thereby being widely applied to overhead transmission lines.
However, with the increase of the usage amount of the composite insulator and the net hanging time, the umbrella skirt and the sheath of the composite insulator in operation have aging phenomena of different degrees, which causes the electrical insulation performance of the insulator string to be reduced, and even causes accidents such as line tripping, string dropping and the like in severe cases. Especially, the power failure of the extra-high voltage line has great influence on the operation safety, reliability and economy of a power grid. Live working is an important technical means for ensuring the operation reliability of a power grid. At present, a large number of hot-line work projects (mainly in ultra-high and extra-high voltage grades) for composite insulators of overhead transmission lines are developed by line operation and maintenance units. In the live-line work items actually developed, the percentage of work items such as insulators and hardware items performed near the insulator string is the largest. As the operating time of the composite insulator increases, the electrical and mechanical properties of the composite insulator may further degrade, resulting in increased defects and failures. Particularly, the conductive defect in the composite insulator is not easy to be found. If live-wire workers work near a composite insulator with a conductive defect, after the defect develops to a certain degree and a gap of a short-circuit part of the worker, internal breakdown can occur under the operating voltage or overvoltage to cause a drop or casualty accident, the national standard, the electric power industry standard and the enterprise standard of China are clearly specified, before live-wire work is carried out on a porcelain insulator of a power transmission line, zero and low values of the porcelain insulator are measured, after the number of good insulator pieces meets the safety requirement of the live-wire work, the work can be carried out, and a mature porcelain insulator detection device is provided in China. The method and the device for detecting the safety condition of the live-wire operation of the composite insulator are still blank.
Disclosure of Invention
The invention aims to provide a method for detecting the electrical defects of the composite insulator string of the overhead transmission line in an electrified manner, which can continuously measure the electric field intensity of the composite insulator string in real time.
In order to solve the technical problems, the invention is realized by the following technical scheme: a method for detecting electrical defects of a composite insulator string of an overhead transmission line in an electrified manner is based on a detection device, wherein the detection device comprises an insulation guide cover, a detection assembly, an insulation operating rod and a mobile phone terminal, a universal connection assembly connected with the insulation operating rod is arranged on the insulation guide cover, the detection assembly comprises a mounting box and a control panel arranged on the mounting box, the mounting box is fixedly connected onto the insulation guide cover, an electric field sensor is arranged on the mounting box, a data processing chip connected with the electric field sensor is arranged on the control panel, a storage module is connected onto the data processing chip, a wireless transmission module connected with the mobile phone terminal is connected onto the storage module, and the storage module and the wireless transmission module are both arranged on the control panel; the method comprises the following steps in sequence:
the method comprises the following steps: the detection device is used for confirming whether the information of the overhead line is consistent with the work ticket or not, checking the information of the detection device, confirming that the voltage grade of the detection device is consistent with that of the detected line and whether the detection device is qualified and effective or not, and then carrying out self-checking and appearance checking on the detection device to ensure that the detection device is not invalid and the appearance is not obviously damaged;
step two: carrying out a live equipment test on the detection device qualified in the step one, and ensuring that the detection device carries out the test on the live equipment;
step three: detecting the network connection condition of the detection device and the mobile phone terminal after the test in the step two is qualified;
step four: carrying the qualified detection device to the hanging point cross arm position of the insulator string to be detected, and sleeving the insulation guide cover on the insulator string;
step five: an operator pushes the insulation guide cover to slowly slide down along the insulator string through the insulation operating rod, a manager observes the data recording condition of the mobile phone terminal and timely reminds the operator to control the release speed of the insulation guide cover to be stabilized in a uniform speed state;
step six: after the detection device reaches the high-voltage end, a manager clicks and stores the recorded data, then an operator lifts the insulation guide cover by recovering the insulation operating rod to measure the electric field data of the insulator string again, and the lifting speed is equal to the release speed;
step seven: and repeating the fifth step and the sixth step once, and withdrawing the electric field detection device after the detection is finished.
Preferably, both ends all are equipped with the turn-ups of upwards buckling around the insulating guide housing, and turn-ups and insulating guide housing be integrated into one piece.
Preferably, both sides of the insulating guide cover are provided with vertical through holes.
Preferably, a power supply is arranged in the mounting box, a charging interface connected with the power supply is arranged on the control panel, and a power switch for controlling the power supply to be switched on and off is arranged on the control panel.
Preferably, a power indicator lamp is further arranged on the control panel.
Preferably, the insulation guide cover is provided with a detection hole for installing the electric field sensor.
Preferably, a PC film is arranged on the control panel, and a mark is arranged on the PC film.
Preferably, universal coupling assembling includes the fixing base of one section fixed connection on insulating guide housing to and one section rotates the rotation seat of connection on the fixing base, be equipped with the connector that links to each other with insulating action bars on the rotation seat.
Preferably, the mounting box is provided with a connecting block connected with the insulating guide cover, and the connecting block and the mounting box are of an integrated structure.
Preferably, the wireless transmission module is a bluetooth transmission module.
In conclusion, the invention has the advantages that: the method comprises the steps of confirming the line information and the work order information, confirming the voltage grade of the detection device and carrying out the electrified self-inspection of the detection device in sequence by the first step, the second step and the third step, so that the voltage grade error of the detection device can not occur in the detection process of an operator, the detection device can not be tested on electrified equipment, the reliability of the test is improved, the tower climbing times of the operator are reduced, the detection quality is improved, the insulation guide cover is sleeved on the insulator string in the fourth step, the insulator string can be always attached to the edge of the umbrella skirt in the detection process, the distance between the electric field sensor and the edge of the umbrella skirt is relatively fixed at a proper distance, the accuracy of the detection result is ensured, and the insulation effect of the insulation guide cover is realized, so that the electrified operation of the composite insulator string can be realized, and the electric field sensor senses the electric field intensity of the composite insulator string in real time, the collected signals are processed by the data processing chip and then are transmitted to the mobile phone terminal by the wireless transmission module after being stored and stored by the storage module, so that a tester can quickly obtain the measured data and can form a distribution curve of 'electric field strength-umbrella skirt number' by the measured data and the umbrella skirt number of the composite insulator string, the tester can conveniently judge the defect position and length information by the distribution rule of the electric field strength value, because the electric field sensor is arranged on the insulation guide cover by the mounting box, the electric field strength of the composite insulator string can be continuously measured in real time, in the fifth step and the sixth step, the test quality can be ensured by controlling the releasing speed and the lifting speed of the guide insulation cover, the deviation caused by overlarge or undersize speed is avoided, the test quality is improved, and secondly, the connection between the insulation guide cover and the insulation operating rod is realized by the universal connection assembly, consequently, can realize adjusting the angle between insulating action bars and the insulating guide housing, make the measurement personnel be in the best operating angle, working strength when further having reduced the operation, finally, pass through control panel integration with data processing chip, storage module and wireless transmission module on the mounting box, can reduce the installation space of whole determine module on the insulating guide housing, further reduced the weight of whole insulating guide housing, make things convenient for the measurement personnel to operate.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1 is a schematic view of the detecting device of the present invention;
FIG. 2 is a schematic structural view of a detecting unit according to the present invention;
fig. 3 is a schematic structural view of the insulation guide cover of the present invention.
Reference numerals:
1 insulating direction cover, 10 cell-phone terminals, 11 turn-ups, 12 vertical through-holes, 13 inspection holes, 2 determine module, 20 mounting boxes, 21 control panel, 22 electric field sensor, 23 data processing chip, 24 storage module, 25 wireless transmission module, 26 interface that charges, 27 switch, 28 power indicator, 29 connecting block, 3 insulating bar, 4 universal coupling assembling, 41 fixing bases, 42 seat, 43 connectors, 5 power supply.
Detailed Description
An electric defect live-line detection method for a composite insulator string of an overhead transmission line is based on a detection device, as shown in fig. 1, 2 and 3, the detecting device includes an insulating guide housing, a detecting member 2, an insulating operating rod 3 and a mobile phone terminal 10, the insulation guide cover 1 is provided with a universal connecting component 4 connected with an insulation operating rod 3, the detection component 2 comprises a mounting box 20 and a control panel 21 arranged on the mounting box 20, the mounting box 20 is fixedly connected to the insulating guide cover 1, the electric field sensor 22 is arranged on the mounting box 20, the control panel 21 is provided with a data processing chip 23 connected with the electric field sensor 22, the data processing chip 23 is connected with a storage module 24, the storage module 24 is connected with a wireless transmission module 25 connected with a mobile phone terminal, and the storage module 24 and the wireless transmission module 25 are both arranged on the control panel 21; the method comprises the following steps in sequence:
the method comprises the following steps: the detection device is used for confirming whether the information of the overhead line is consistent with the work ticket or not, checking the information of the detection device, confirming that the voltage grade of the detection device is consistent with that of the detected line and whether the detection device is qualified and effective or not, and then carrying out self-checking and appearance checking on the detection device to ensure that the detection device is not invalid and the appearance is not obviously damaged;
step two: carrying out a live equipment test on the detection device qualified in the step one, and ensuring that the detection device carries out the test on the live equipment;
step three: detecting the network connection condition of the detection device and the mobile phone terminal after the test in the step two is qualified;
step four: carrying the qualified detection device to the hanging point cross arm position of the insulator string to be detected, and sleeving the insulation guide cover on the insulator string;
step five: an operator pushes the insulation guide cover to slowly slide down along the insulator string through the insulation operating rod, a manager observes the data recording condition of the mobile phone terminal and timely reminds the operator to control the release speed of the insulation guide cover to be stabilized in a uniform speed state;
step six: after the detection device reaches the high-voltage end, a manager clicks and stores the recorded data, then an operator lifts the insulation guide cover by recovering the insulation operating rod to measure the electric field data of the insulator string again, and the lifting speed is equal to the release speed;
step seven: and repeating the fifth step and the sixth step once, and withdrawing the electric field detection device after the detection is finished.
The method comprises the steps of confirming the line information and the work order information, confirming the voltage grade of the detection device and carrying out the electrified self-inspection of the detection device in sequence by the first step, the second step and the third step, so that the voltage grade error of the detection device can not occur in the detection process of an operator, the detection device can not be tested on electrified equipment, the reliability of the test is improved, the tower climbing times of the operator are reduced, the detection quality is improved, the insulation guide cover is sleeved on the insulator string in the fourth step, the insulator string can be always attached to the edge of the umbrella skirt in the detection process, the distance between the electric field sensor and the edge of the umbrella skirt is relatively fixed at a proper distance, the accuracy of the detection result is ensured, and the insulation effect of the insulation guide cover is realized, so that the electrified operation of the composite insulator string can be realized, and the electric field sensor senses the electric field intensity of the composite insulator string in real time, the collected signals are processed by the data processing chip and then are transmitted to the mobile phone terminal by the wireless transmission module after being stored and stored by the storage module, so that a tester can quickly obtain the measured data and can form a distribution curve of 'electric field strength-umbrella skirt number' by the measured data and the umbrella skirt number of the composite insulator string, the tester can conveniently judge the defect position and length information by the distribution rule of the electric field strength value, because the electric field sensor is arranged on the insulation guide cover by the mounting box, the electric field strength of the composite insulator string can be continuously measured in real time, in the fifth step and the sixth step, the test quality can be ensured by controlling the releasing speed and the lifting speed of the guide insulation cover, the deviation caused by overlarge or undersize speed is avoided, the test quality is improved, and secondly, the connection between the insulation guide cover and the insulation operating rod is realized by the universal connection assembly, consequently, can realize adjusting the angle between insulating action bars and the insulating guide housing, make the measurement personnel be in the best operating angle, working strength when further having reduced the operation, finally, pass through control panel integration with data processing chip, storage module and wireless transmission module on the mounting box, can reduce the installation space of whole determine module on the insulating guide housing, further reduced the weight of whole insulating guide housing, make things convenient for the measurement personnel to operate.
Both ends all are equipped with the turn-ups 11 of upwards buckling around insulating guide housing 1, and turn-ups 11 and insulating guide housing 1 be integrated into one piece, guarantee that there is smooth direction and level and smooth detection in the insulator testing process, secondly, set up turn-ups 11 and insulating guide housing 1 into integrated into one piece, can simplify the mounting process between turn-ups 11 and the insulating guide housing 1, improve turn-ups 11 and insulating guide housing 1's joint strength, the both sides of insulating guide housing 1 all are equipped with vertical through-hole 12, under the prerequisite of proof strength, further alleviate holistic weight, reduce operating personnel physical demands.
The power supply 5 is arranged in the mounting box 20, the control panel 21 is provided with a charging interface 26 connected with the power supply 5 and a power switch 27 for controlling the on and off of the power supply 5, the mounting box 20 in the embodiment is an ABS mounting box, so that the mounting box 20 is not influenced by temperature, humidity and frequency, the power supply 5 can be arranged to supply power to the electric field sensor 22, the data processing chip 23, the storage module 24 and the wireless transmission module 25, the charging interface 26 can be arranged to charge the power supply 5 and ensure the power supply quality of the power supply 5, the power switch 27 can be arranged to avoid the voltage waste of the power supply 5 when not in use, the control panel 21 is also provided with a power indicator lamp 28 which can detect the voltage of the power supply 5 through the brightness of the power indicator lamp 28 and ensure that an operator can charge the power supply 5 in time, guarantee power supply 5's continuity power supply, be equipped with the inspection hole 13 of installation electric field sensor 22 on the insulating guide cover 1, make electric field sensor 22's test probe be close to the compound insulator chain that detects, improve the collection quality of signal, be equipped with the PC film on control panel 21, be equipped with the sign on the PC film, the setting of PC film can play certain protect function to control panel 21, and the setting of sign can play certain sign to spare part on the control panel 21, makes things convenient for measurement personnel's operation.
Universal coupling assembling 4 includes one section fixed connection fixing base 41 on insulating guide housing 1 to and one section rotates the rotation seat 42 of connection on fixing base 41, be equipped with the connector 43 that links to each other with insulating bar 3 on the rotation seat 42, set universal coupling assembling 4 to fixing base 41 and rotation seat 42, fixing base 41 can not only realize that universal coupling assembling 4 is quick to be installed on insulating guide housing 1, and can effectual restriction rotate the turned angle of seat 42, make it adapt to different detection ring border, secondly, connector 43 can adapt to different insulating bar 3, satisfy different detection demands.
Be equipped with the connecting block 29 that links to each other with insulating guide housing 1 on the mounting box 20, just connecting block 29 and mounting box 20 formula structure as an organic whole, the area of contact of mounting box 20 and insulating guide housing 1 can be improved in the setting of connecting block 29, and can ensure the stationarity when mounting box 20 installs, improves the fixed quality of mounting box 20 and insulating wire cover, secondly, sets connecting block 29 and mounting box 20 formula structure as an organic whole, can simplify the mounting structure between connecting block 29 and the mounting box 20, improves the joint strength between connecting block 29 and the mounting box 20, improves the fixed quality of whole mounting box 20, wireless transmission module 25 is bluetooth transmission module, can guarantee signal transmission's stability.
The above description is only an embodiment of the present invention, but the technical features of the present invention are not limited thereto, and any changes or modifications within the technical field of the present invention by those skilled in the art are covered by the claims of the present invention.
Claims (10)
1. The method for detecting the electrical defects of the composite insulator string of the overhead transmission line in an electrified manner is characterized by comprising the following steps of: the method based on the detection device comprises the steps that the detection device comprises an insulation guide cover, a detection assembly, an insulation operating rod and a mobile phone terminal, a universal connection assembly connected with the insulation operating rod is arranged on the insulation guide cover, the detection assembly comprises a mounting box and a control panel arranged on the mounting box, the mounting box is fixedly connected onto the insulation guide cover, an electric field sensor is arranged on the mounting box, a data processing chip connected with the electric field sensor is arranged on the control panel, a storage module is connected onto the data processing chip, a wireless transmission module connected with the mobile phone terminal is connected onto the storage module, and the storage module and the wireless transmission module are both arranged on the control panel; the method comprises the following steps in sequence:
the method comprises the following steps: the detection device is used for confirming whether the information of the overhead line is consistent with the work ticket or not, checking the information of the detection device, confirming that the voltage grade of the detection device is consistent with that of the detected line and whether the detection device is qualified and effective or not, and then carrying out self-checking and appearance checking on the detection device to ensure that the detection device is not invalid and the appearance is not obviously damaged;
step two: carrying out a live equipment test on the detection device qualified in the step one, and ensuring that the detection device carries out the test on the live equipment;
step three: detecting the network connection condition of the detection device and the mobile phone terminal after the test in the step two is qualified;
step four: carrying the qualified detection device to the hanging point cross arm position of the insulator string to be detected, and sleeving the insulation guide cover on the insulator string;
step five: an operator pushes the insulation guide cover to slowly slide down along the insulator string through the insulation operating rod, a manager observes the data recording condition of the mobile phone terminal and timely reminds the operator to control the release speed of the insulation guide cover to be stabilized in a uniform speed state;
step six: after the detection device reaches the high-voltage end, a manager clicks and stores the recorded data, then an operator lifts the insulation guide cover by recovering the insulation operating rod to measure the electric field data of the insulator string again, and the lifting speed is equal to the release speed;
step seven: and repeating the fifth step and the sixth step once, and withdrawing the electric field detection device after the detection is finished.
2. The method for electrified detection of the electrical defects of the overhead transmission line composite insulator string according to claim 1, characterized by comprising the following steps: both ends all are equipped with the turn-ups of upwards buckling around the insulating guide housing, and turn-ups and insulating guide housing are integrated into one piece.
3. The method for electrified detection of the electrical defects of the overhead transmission line composite insulator string according to claim 2, characterized by comprising the following steps: and vertical through holes are formed in the two sides of the insulation guide cover.
4. The method for electrified detection of the electrical defects of the overhead transmission line composite insulator string according to claim 1, characterized by comprising the following steps: the installation box is internally provided with a power supply, the control panel is provided with a charging interface connected with the power supply, and a power switch for controlling the power supply to be switched on and off.
5. The method for electrified detection of the electrical defects of the overhead transmission line composite insulator string according to claim 4, characterized by comprising the following steps: and the control panel is also provided with a power indicator lamp.
6. The method for electrified detection of the electrical defects of the overhead transmission line composite insulator string according to claim 1, characterized by comprising the following steps: and the insulating guide cover is provided with a detection hole for installing an electric field sensor.
7. The method for electrified detection of the electrical defects of the overhead transmission line composite insulator string according to claim 1, characterized by comprising the following steps: the control panel is provided with a PC film, and the PC film is provided with a mark.
8. The method for electrified detection of the electrical defects of the overhead transmission line composite insulator string according to claim 1, characterized by comprising the following steps: universal coupling assembling includes the fixing base of one section fixed connection on insulating guide housing to and one section rotates the rotation seat of connection on the fixing base, be equipped with the connector that links to each other with insulating action bars on rotating the seat.
9. The method for electrified detection of the electrical defects of the overhead transmission line composite insulator string according to claim 1, characterized by comprising the following steps: the mounting box is provided with a connecting block connected with the insulating guide cover, and the connecting block and the mounting box are of an integrated structure.
10. The method for electrified detection of the electrical defects of the overhead transmission line composite insulator string according to claim 1, characterized by comprising the following steps: the wireless transmission module is a Bluetooth transmission module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111325501.3A CN114280384A (en) | 2021-11-10 | 2021-11-10 | Method for electrified detection of electrical defects of composite insulator string of overhead transmission line |
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| CN202111325501.3A CN114280384A (en) | 2021-11-10 | 2021-11-10 | Method for electrified detection of electrical defects of composite insulator string of overhead transmission line |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014108017A1 (en) * | 2013-01-11 | 2014-07-17 | 山东鲁能智能技术有限公司 | Detection robot system of insulator strings |
| CN106383274A (en) * | 2016-09-08 | 2017-02-08 | 华北电力大学 | Transmission line insulator electrification detection method |
| CN112147472A (en) * | 2020-09-27 | 2020-12-29 | 国网辽宁省电力有限公司营口供电公司 | Self-adaptation insulator detection device with guide housing |
-
2021
- 2021-11-10 CN CN202111325501.3A patent/CN114280384A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014108017A1 (en) * | 2013-01-11 | 2014-07-17 | 山东鲁能智能技术有限公司 | Detection robot system of insulator strings |
| CN106383274A (en) * | 2016-09-08 | 2017-02-08 | 华北电力大学 | Transmission line insulator electrification detection method |
| CN112147472A (en) * | 2020-09-27 | 2020-12-29 | 国网辽宁省电力有限公司营口供电公司 | Self-adaptation insulator detection device with guide housing |
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