CN117233558A - Power cable joint insulation state detection method - Google Patents
Power cable joint insulation state detection method Download PDFInfo
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- CN117233558A CN117233558A CN202311523780.3A CN202311523780A CN117233558A CN 117233558 A CN117233558 A CN 117233558A CN 202311523780 A CN202311523780 A CN 202311523780A CN 117233558 A CN117233558 A CN 117233558A
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- 238000009413 insulation Methods 0.000 title claims abstract description 59
- 238000001514 detection method Methods 0.000 title claims abstract description 18
- 238000007791 dehumidification Methods 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 12
- 230000005540 biological transmission Effects 0.000 claims description 24
- 238000001035 drying Methods 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 12
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- 238000007599 discharging Methods 0.000 claims description 2
- 230000029058 respiratory gaseous exchange Effects 0.000 claims 3
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- 238000004458 analytical method Methods 0.000 description 1
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Abstract
The utility model discloses a method for detecting the insulation state of a power cable joint, and particularly relates to the technical field of cable detection. Step two, an operation system for detecting the insulation state of the cable connector is established, and the insulation state information of the cable connector, acquired by the data acquisition module, is transmitted to the system for detection. The utility model combines the cooperation of software and hardware, not only can achieve the real-time detection of the insulating state of the cable joint, but also can carry out targeted dehumidification and exhaust treatment according to the environment of the cable joint, thereby avoiding adverse effects of the cable joint in adverse environments and ensuring normal operation of the cable as far as possible while ensuring the real-time detection of the cable joint.
Description
Technical Field
The utility model relates to the technical field of cable detection, in particular to a method for detecting the insulation state of a power cable joint.
Background
The power cable is a cable for transmitting and distributing electric energy, is commonly used for urban underground power grids, power station leading-out lines, power supply in industrial and mining enterprises and power transmission lines under the river-crossing sea water, and the cable connector is a connector for connecting a plurality of cables, so that the connection part between the cables can be communicated, and data transmission can be realized.
The cable joints play a role in connecting a plurality of cables, the working environment is special, the number of the joints is large, the distribution is wide, the production and power failure maintenance are needed to be stopped regularly in the use process, the occurrence of cable joint fault accidents still cannot be avoided, and therefore, how to effectively monitor the insulation state of each cable joint, and the prevention of the occurrence and the further expansion of the accidents are the key for guaranteeing the safe and stable operation of the power system.
The utility model patent of patent application number CN202021099943.1 discloses an on-line monitoring system for the state of an intermediate joint of a power cable, which adopts various sensors to monitor the partial discharge state and the environmental parameters of the intermediate joint, wherein the environmental parameters specifically comprise the temperature and humidity of the environment where the intermediate joint is positioned and whether vibration signals exist or not, and the insulation state of the intermediate joint can be accurately judged according to the partial discharge state and the environmental parameters.
The utility model patent of patent application number CN202211019543.9 discloses a cable intermediate joint insulation state monitoring method and system, which is characterized in that insulation state characteristic quantity is extracted from insulation state data by collecting the insulation state data of a target cable intermediate joint, the insulation state characteristic quantity is packed into a data packet, the data packet is subjected to coded modulation and impedance matching to obtain a high-frequency signal, the high-frequency signal is bidirectionally transmitted to equipment nodes adjacent to two ends of the target cable intermediate joint along a carrier channel of a transmission line corresponding to the target cable intermediate joint, the high-frequency signal is demodulated to obtain corresponding insulation state characteristic quantity and a destination address, whether the destination address is consistent with a preset address or not is judged, so that whether the equipment node is a master station or not is judged, then the insulation state of the target cable intermediate joint is evaluated by the master station according to the insulation state characteristic quantity in the data packet, and therefore the efficiency and the accuracy of monitoring the cable intermediate joint insulation state are improved by utilizing carrier communication.
The above patent can detect the insulation state of the cable joint, however, the insulation state of the cable joint is easily affected by the environment, such as the temperature and humidity of the cable joint, when the influence of the environment where the cable joint is located on the insulation state of the cable joint is detected, the damage to the cable is difficult to take in time, and when the worker finds that the temperature and humidity at the cable joint are too high, the insulation damage is caused to the cable joint, and a certain hysteresis is generated.
Disclosure of Invention
In order to overcome the above-mentioned drawbacks of the prior art, the present utility model provides a method for detecting an insulation state of a power cable joint, so as to solve the above-mentioned problems in the prior art.
In order to achieve the above purpose, the present utility model provides the following technical solutions: a method for detecting an insulation state of a power cable joint, the method comprising the steps of:
step one, installing a data acquisition module and a dehumidifying exhaust module at a cable joint, wherein the data acquisition module acquires insulation data of the cable joint and the current environment, and the dehumidifying exhaust module carries out hazard treatment according to the current state of the cable joint;
step two, an operation system for detecting the insulation state of the cable joint is established, the insulation state information of the cable joint, which is acquired by the data acquisition module, is transmitted to the system for detection, the insulation state of the cable joint is acquired, and the dehumidification exhaust module is controlled to carry out hazard treatment on the cable joint according to the condition of the insulation state of the cable.
Preferably, the specific steps of the second step are as follows:
s2.1, the data acquisition module transmits the acquired insulation state information of the cable connector to an upper computer through a data transmission module in the system, the data receiving module receives data, the upper computer displays the received data through a display module, and a worker detects the insulation state of the cable connector according to the data displayed by the display module;
s2.2, the upper computer simultaneously conveys the state of the cable joint to the main control module, and the main control module controls the dehumidifying exhaust module to carry out hazard treatment on the cable joint according to the state condition of the cable joint.
Preferably, the data acquisition module comprises a temperature sensor, a humidity sensor and a partial discharge sensor, wherein the temperature sensor monitors temperature state data of the cable connector, the humidity sensor monitors humidity state data of the cable connector, and the partial discharge sensor monitors partial discharge state of the cable connector.
Preferably, the dehumidification exhaust module comprises a cylinder wrapped outside the cable connector, round holes for the cables to pass through are formed in two ends of the cylinder, sealing rings are mounted in the round holes, and heating plates are mounted in the cylinder in an embedded mode.
Preferably, a suction fan is arranged at the top of the cylinder, and an air suction pipe and an air discharge pipe are respectively arranged at the input end and the output end of the suction fan, wherein one end of the air suction pipe extends to the inside of the cylinder, and the air discharge pipe extends to the outside ground.
Preferably, the top of the cylinder is further provided with a blower, the input end and the output end of the blower are respectively provided with an air inlet pipe and a connecting pipe, wherein one end of the air inlet pipe extends to the inside of the cylinder, one end of the connecting pipe is connected with a purifying box, one end of the purifying box is provided with an external pipe, and the external pipe is positioned on the external ground.
Preferably, the system in the second step is composed of a data acquisition module, a dehumidifying and exhausting module, a data transmission module, a data receiving module, an upper computer, a display module and a main control module, wherein a temperature sensor and a humidity sensor in the data acquisition module are concentrated in a cylinder in the dehumidifying and exhausting module, a partial discharging sensor is arranged at a grounding wire of a power cable, the acquisition module is connected with the data transmission module, the data transmission module is connected with the data receiving module, the data receiving module is connected with the upper computer, the upper computer is respectively connected with the display module and the main control module, and the main control module is connected with the dehumidifying and exhausting module.
Preferably, the main control module comprises an A/D converter for converting an analog signal detected by the cable joint into a digital signal, a singlechip controller for controlling the system, and a network connection module for providing a network for data transmission.
Preferably, the data acquisition module and the dehumidifying exhaust module in the first step are specifically installed in such a way that a temperature sensor and a humidity sensor in the data acquisition module are concentrated inside a cylinder in the dehumidifying exhaust module, a partial discharge sensor is installed at a grounding wire of a power cable, the cylinder is clamped outside a cable joint, the cable passes through a round hole formed in the cylinder, and sealing treatment is performed between the cable and the cylinder by using a sealing ring.
Preferably, when the dehumidification exhaust module is controlled to perform hazard treatment on the cable joint, the temperature sensor and the humidity sensor detect that the cable joint is wet, the main control module controls the heating plate to heat the moisture on the cable joint, meanwhile, the suction fan discharges the moisture on the cable joint to the outside through the suction pipe and the exhaust pipe, the suction fan conveys the outside air to the inside of the purifying box to perform drying and purifying treatment, the treated air enters the inside of the cylinder through the connecting pipe and the air inlet pipe, and therefore the cable joint is guaranteed to be used in a constant-temperature drying environment, and the inside of the purifying box is provided with the drying plate and the purifying net for purifying and drying the air.
The utility model has the technical effects and advantages that:
the utility model combines the cooperation of software and hardware, not only can achieve the real-time detection of the insulating state of the cable joint, but also can carry out targeted dehumidification and exhaust treatment according to the environment of the cable joint, thereby avoiding adverse effects of the cable joint in adverse environments and ensuring normal operation of the cable as far as possible while ensuring the real-time detection of the cable joint.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present utility model.
Fig. 2 is a system diagram of the present utility model.
Fig. 3 is a schematic view of the internal structure of the cylinder according to the present utility model.
Fig. 4 is a system diagram of a main control module according to the present utility model.
The reference numerals are: 1. an acquisition module; 2. a dehumidifying exhaust module; 3. a data transmission module; 4. a data receiving module; 5. an upper computer; 6. a display module; 7. a main control module; 8. a temperature sensor; 9. a humidity sensor; 10. a cylinder; 11. a round hole; 12. a seal ring; 13. a heating sheet; 14. a suction fan; 15. an air suction pipe; 16. an exhaust pipe; 17. a blower; 18. an air inlet pipe; 19. a connecting pipe; 20. a purifying box; 21. an A/D converter; 22. a singlechip controller; 23. and a network connection module.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
A method for detecting the insulation state of a power cable joint as shown in fig. 1 to 4, comprising the steps of:
step one, installing a data acquisition module 1 and a dehumidifying exhaust module 2 at a cable joint, wherein the data acquisition module 1 acquires insulation data of the cable joint and the current environment, and the dehumidifying exhaust module 2 carries out hazard treatment according to the current state of the cable joint;
step two, an operation system for detecting the insulation state of the cable joint is established, the insulation state information of the cable joint, which is acquired by the data acquisition module 1, is transmitted to the system for detection, the insulation state of the cable joint is acquired, and the dehumidification exhaust module 2 is controlled to perform hazard treatment on the cable joint according to the condition of the insulation state of the cable.
Specifically, in this structure, adopt data acquisition module 1 to be connected with this monitoring system, data acquisition module 1 can gather the data information of cable joint department to transmit to this monitoring system in analysis and demonstration, the staff reaches real-time supervision's effect according to the cable joint insulation state information that shows, and in case the environment that the cable is located is unusual, if cable joint's humiture is too big, causes direct influence to cable joint's insulativity, and then system control dehumidification exhaust module 2 cools down and dehumidifies the cable, avoids the emergence of cable insulation harm incident, in time makes the relief measure.
In a specific embodiment, as shown in fig. 2, the specific steps of the second step are as follows:
s2.1, the data acquisition module 1 transmits the acquired insulation state information of the cable connector to the upper computer 5 through the data transmission module 3 in the system, the data receiving module 4 receives the data, the upper computer 5 displays the received data through the display module 6, and the staff detects the insulation state of the cable connector according to the data displayed by the display module 6;
s2.2, the upper computer 5 simultaneously conveys the state of the cable joint to the main control module 7, and the main control module 7 controls the dehumidification exhaust module 2 to carry out hazard treatment on the cable joint according to the state condition of the cable joint.
Specifically, in this structure, the data transmission in the second step is described in detail to the system, after the data acquisition module 1 acquires the detailed data of the cable joint, the data transmission module 3 transmits the data to the upper computer 5, the data receiving module 4 is utilized to receive and store the data, meanwhile, the upper computer 5 transmits the data to the display module 6, the inspector controls the dehumidifying and exhausting module 2 to alleviate the temperature and humidity condition of the cable joint through the main control module 7, and adverse effects of the cable joint due to overlarge temperature and humidity are reduced as much as possible.
In a specific embodiment, as shown in fig. 3, the data acquisition module 1 includes a temperature sensor 8, a humidity sensor 9 and a partial discharge sensor, wherein the temperature sensor 8 monitors temperature state data of the cable joint, the humidity sensor 9 monitors humidity state data of the cable joint, and the partial discharge sensor monitors partial discharge state of the cable joint.
Specifically, the data acquisition module 1 in this structure comprises temperature sensor 8, humidity transducer 9 and partial discharge sensor, and in cable shop facility time, can install partial discharge sensor in power cable's earth connection department, reach partial discharge's data detection, if cable current is too big to explain that resistance is less, and then surface cable joint's insulating nature is not good, and temperature sensor 8 and humidity transducer 9 real-time supervision cable joint's humiture condition, the humiture height directly leads to the fact the influence to cable joint's insulating nature.
In a specific embodiment, as shown in fig. 1 and 3, the dehumidifying exhaust module 2 comprises a cylinder 10 wrapped outside a cable connector, round holes 11 for a cable to pass through are formed at two ends of the cylinder 10, sealing rings 12 are installed inside the round holes 11, heating plates 13 are installed inside the cylinder 10 in an embedded mode, a suction fan 14 is arranged at the top of the cylinder 10, an air suction pipe 15 and an air exhaust pipe 16 are respectively arranged at the input end and the output end of the suction fan 14, one end of the air suction pipe 15 extends to the inside of the cylinder 10, the air exhaust pipe 16 extends to the outside ground, a blower 17 is further arranged at the top of the cylinder 10, an air inlet pipe 18 and a connecting pipe 19 are respectively arranged at the input end and the output end of the blower 17, one end of the air inlet pipe 18 extends to the inside of the cylinder 10, one end of the connecting pipe 19 is connected with a purifying box 20, one end of the purifying box 20 is provided with an external pipe, and the external pipe is located at the outside ground.
Specifically, the structure is further described with respect to the dehumidifying exhaust module 2, a hardware device is adopted to assist the cable joint to be in a good working environment, adverse factors of the cable joint are reduced, specifically, the cylinder 10 in the dehumidifying exhaust module 2 is clamped outside the cable joint, a cable passes through a round hole 11 formed in the cylinder 10, a sealing ring 12 at the round hole 11 seals the cable and the cylinder 10, external water vapor and dust entering the cable joint are reduced to cause a certain effect, when the temperature sensor 8 and the humidity sensor 9 detect that the cable joint is wet, the main control module 7 controls the heating plate 13 to heat the moisture at the cable joint, meanwhile, the suction fan 14 discharges the moisture at the cable joint to the outside through the air suction pipe 15 and the air exhaust pipe 16, the suction fan 14 conveys the outside air to the inside of the purifying box 20 to be dried and purified, and the processed air enters the inside the cylinder 10 through the connecting pipe 19 and the air suction pipe 18, so that the cable joint is ensured to be used in the environment of constant temperature drying.
In a specific embodiment, as shown in fig. 2, the system in the second step is composed of a data acquisition module 1, a dehumidification and exhaust module 2, a data transmission module 3, a data receiving module 4, an upper computer 5, a display module 6 and a main control module 7, wherein a temperature sensor 8 and a humidity sensor 9 in the data acquisition module 1 are concentrated in a cylinder 10 in the dehumidification and exhaust module 2, a local discharge sensor is installed at a grounding wire of a power cable, the acquisition module 1 is connected with the data transmission module 3, the data transmission module 3 is connected with the data receiving module 4, the data receiving module 4 is connected with the upper computer 5, the upper computer 5 is respectively connected with the display module 6 and the main control module 7, and the main control module 7 is connected with the dehumidification and exhaust module 2.
Specifically, in this structure, the system for detecting the insulation state of the cable joint in real time is described in detail, and the system is composed of a data acquisition module 1, a dehumidification and exhaust module 2, a data transmission module 3, a data receiving module 4, an upper computer 5, a display module 6 and a main control module 7, wherein the data acquisition module 1 can realize transmission of acquired data, achieves the purpose that an external worker carries out real-time detection processing on the data of the cable joint, and once the temperature and humidity condition of the cable joint are poor, the main control module 7 controls the dehumidification and exhaust module 2 to carry out hazard reduction processing on the cable joint.
In a specific embodiment, as shown in fig. 2 and 4, the main control module 7 includes an a/D converter 21 for converting an analog signal detected by the cable connector into a digital signal, a single-chip controller 22 for controlling the system, and a network connection module 23 for providing a network for data transmission.
Specifically, in this structure, the main control module 7 is described in detail with respect to the main control module 7, where the main control module 7 is composed of an a/D converter 21, a single-chip microcomputer controller 22 and a network connection module 23, where the a/D converter 21 can convert an analog signal detected by a cable connector into a digital signal to send the digital signal, so that a worker can conveniently detect cable connector data information, the single-chip microcomputer controller 22 can control the system, and the network connection module 23 realizes network data connection of the system and realizes ordered transmission of data.
In a specific embodiment, as shown in fig. 1 and 3, the data acquisition module 1 and the dehumidifying exhaust module 2 in the first step are specifically installed in such a way that the temperature sensor 8 and the humidity sensor 9 in the data acquisition module 1 are concentrated inside a cylinder 10 in the dehumidifying exhaust module 2, the partial discharge sensor is installed at the ground wire of a power cable, the cylinder 10 is clamped outside a cable joint, the cable passes through a round hole 11 formed in the cylinder 10, and sealing treatment is performed between the cable and the cylinder 10 by using a sealing ring 12.
Specifically, this structure mainly describes the installation of collection module 1 and dehumidification exhaust module 2, and with temperature sensor 8 and humidity transducer 9 in data collection module 1 concentrated inside the drum 10 in dehumidification exhaust module 2, and then after installing drum 10 in cable joint's outside, can carry out the detailed detection to cable joint's humiture environment, can reach the installation of dehumidification exhaust module 2 moreover, not only can reach cable joint's humiture detection, can reach cable joint's harm processing moreover.
In a specific embodiment, as shown in fig. 1 and 3, when the dehumidification exhaust module 2 is controlled to perform hazard treatment on a cable joint, the temperature sensor 8 and the humidity sensor 9 control the heating plate 13 to heat the moisture on the cable joint when detecting that the cable joint is wet, meanwhile, the suction fan 14 discharges the moisture on the cable joint to the outside through the suction pipe 15 and the exhaust pipe 16, the suction fan 14 conveys the outside air to the inside of the purifying box 20 for drying and purifying treatment, the treated air enters the inside of the cylinder 10 through the connecting pipe 19 and the air inlet pipe 18, so that the cable joint is ensured to be used in a constant-temperature drying environment, and the drying plate and the purifying net for purifying and drying the air are installed in the purifying box 20.
Specifically, the structure is used for describing the specific working steps of the dehumidification exhaust module 2 during hazard treatment of the cable joint in detail, so that the cable joint is used in a constant-temperature drying environment, and adverse effects and hazards caused by overlarge temperature and humidity at the cable joint are reduced.
The following details of the above-described structure and steps are provided for the purpose of more clearly understanding the specific principles of the present utility model:
when the structure is specifically used, firstly, the cylinder 10 in the dehumidification exhaust module 2 is installed at the cable joint, the cylinder 10 is wrapped outside the cable joint, and a cable passes through a round hole 11 formed in the cylinder 10 and is subjected to sealing treatment through the sealing ring 12;
the temperature sensor 8 and the humidity sensor 9 in the data acquisition module 1 are arranged in the cylinder 10, after the cylinder 10 is wrapped outside the cable joint, the temperature sensor 8 and the humidity sensor 9 in the cylinder can detect the temperature and humidity conditions of the cable joint in real time, and the local discharge sensor is arranged at the grounding wire of the power cable, so that the current condition monitoring of the cable joint is realized;
judging the insulation state of the cable joint according to the temperature and humidity conditions and the cable current conditions of the monitored cable joint, conveying the temperature and humidity cleaning and the current conditions at the cable joint to an upper computer 5 through a data conveying module 3, receiving and storing data through a data receiving module 4, displaying the data through a display module 6 by the upper computer 5 at the same time for workers to monitor in real time, and controlling a dehumidifying exhaust module 2 to perform hazard treatment on the temperature and humidity conditions by a main control module 7 once the temperature and humidity at the cable joint is overlarge;
when the temperature and humidity conditions of the cable joint are treated, the main control module 7 controls the heating sheet 13 to heat the moisture at the cable joint, meanwhile, the suction fan 14 discharges the moisture at the cable joint to the outside through the air suction pipe 15 and the air exhaust pipe 16, the suction fan 14 conveys the outside air to the inside of the purifying box 20 for drying and purifying treatment, and the treated air enters the inside of the cylinder 10 through the connecting pipe 19 and the air inlet pipe 18, so that the cable joint is ensured to be used in a constant-temperature drying environment, and adverse effects caused by long-term use of the cable joint in an environment with overlarge temperature and humidity are reduced;
in a word, the utility model combines the cooperation of software and hardware to realize the real-time detection of the insulating state of the cable joint, and can carry out targeted processing according to the environment of the cable joint, thereby avoiding adverse effects of the cable joint in adverse environments and ensuring the normal operation of the cable as far as possible while ensuring the real-time detection of the cable joint.
The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.
Claims (10)
1. A power cable joint insulation state detection method is characterized in that: the method comprises the following steps:
step one, installing a data acquisition module (1) and a dehumidifying exhaust module (2) at a cable joint, wherein the data acquisition module (1) acquires insulation data of the cable joint and the current environment, and the dehumidifying exhaust module (2) carries out hazard treatment according to the current state of the cable joint;
step two, an operation system for detecting the insulation state of the cable joint is established, the insulation state information of the cable joint, which is acquired by the data acquisition module (1), is transmitted to the system for detection, the insulation state of the cable joint is acquired, and the dehumidification exhaust module (2) is controlled to carry out hazard treatment on the cable joint according to the condition of the insulation state of the cable.
2. The power cable joint insulation state detection method according to claim 1, wherein: the specific steps of the second step are as follows:
s2.1, the data acquisition module (1) transmits the acquired insulation state information of the cable joint to the upper computer (5) through the data transmission module (3) in the system, the data receiving module (4) receives the data, the upper computer (5) displays the received data through the display module (6), and the staff detects the insulation state of the cable joint according to the data displayed by the display module (6);
s2.2, the upper computer (5) simultaneously conveys the state of the cable joint to the main control module (7), and the main control module (7) controls the dehumidifying exhaust module (2) to carry out hazard treatment on the cable joint according to the state condition of the cable joint.
3. The power cable joint insulation state detection method according to claim 1, wherein: the data acquisition module (1) comprises a temperature sensor (8), a humidity sensor (9) and a partial discharge sensor, wherein the temperature sensor (8) monitors temperature state data of the cable connector, the humidity sensor (9) monitors humidity state data of the cable connector, and the partial discharge sensor monitors partial discharge state of the cable connector.
4. The power cable joint insulation state detection method according to claim 1, wherein: the dehumidification exhaust module (2) comprises a cylinder (10) wrapped outside a cable connector, round holes (11) used for allowing cables to pass through are formed in two ends of the cylinder (10), sealing rings (12) are arranged in the round holes (11), and heating plates (13) are embedded in the cylinder (10).
5. The method for detecting the insulation state of a power cable joint according to claim 4, wherein: the top of drum (10) is provided with suction fan (14), suction fan (14) input and output are provided with breathing pipe (15) and blast pipe (16) respectively, and wherein breathing pipe (15) one end extends to the inside of drum (10), and blast pipe (16) extend to outside ground department.
6. The method for detecting the insulation state of a power cable joint according to claim 4, wherein: the utility model discloses a purifying device for the air of the air conditioner, including drum (10), air-blower (17), air inlet pipe (18) and connecting pipe (19) are provided with respectively to drum (10) top, air-blower (17) input and output, wherein air inlet pipe (18) one end extends to drum (10) inside, and the one end of connecting pipe (19) is connected with purifying box (20), purifying box (20) one end is provided with outside pipe, outside pipe is in outside ground department.
7. The power cable joint insulation state detection method according to claim 1, wherein: the system in the step two comprises a data acquisition module (1), a dehumidification exhaust module (2), a data transmission module (3), a data receiving module (4), an upper computer (5), a display module (6) and a main control module (7), wherein a temperature sensor (8) and a humidity sensor (9) in the data acquisition module (1) are concentrated in a cylinder (10) in the dehumidification exhaust module (2), a local discharge sensor is arranged at a grounding wire of a power cable, the acquisition module (1) is connected with the data transmission module (3), the data transmission module (3) is connected with the data receiving module (4), the data receiving module (4) is connected with the upper computer (5), the upper computer (5) is respectively connected with the display module (6) and the main control module (7), and the main control module (7) is connected with the dehumidification exhaust module (2).
8. The method for detecting the insulation state of a power cable joint according to claim 7, wherein: the main control module (7) comprises an A/D converter (21) for converting an analog signal detected by the cable connector into a digital signal, a singlechip controller (22) for controlling the system and a network connection module (23) for providing a network for data transmission.
9. The power cable joint insulation state detection method according to claim 1, wherein: the data acquisition module (1) and the dehumidifying exhaust module (2) in the first step are specifically installed, wherein a temperature sensor (8) and a humidity sensor (9) in the data acquisition module (1) are concentrated inside a cylinder (10) in the dehumidifying exhaust module (2), a partial discharge sensor is installed at a grounding wire of a power cable, the cylinder (10) is clamped outside a cable joint, a cable passes through a round hole (11) formed in the cylinder (10), and sealing treatment is carried out between the cable and the cylinder (10) by using a sealing ring (12).
10. The power cable joint insulation state detection method according to claim 1, wherein: when the control dehumidification exhaust module (2) carries out hazard treatment on the cable joint, when the temperature sensor (8) and the humidity sensor (9) detect that the cable joint is moist, the main control module (7) controls the heating sheet (13) to heat the moisture on the cable joint, simultaneously, the suction fan (14) is through breathing pipe (15) and blast pipe (16) discharging the moisture on the cable joint to the outside, and the suction fan (14) carries the inside of purifying box (20) to carry out drying and purifying treatment with outside air, the inside of drum (10) is entered into through connecting pipe (19) and intake pipe (18) to the air after the treatment to guarantee that the cable joint is used under the environment of constant temperature drying, the internally mounted of purifying box (20) has dry sheet and the purifying net that is used for purifying and drying the air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202311523780.3A CN117233558A (en) | 2023-11-16 | 2023-11-16 | Power cable joint insulation state detection method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311523780.3A CN117233558A (en) | 2023-11-16 | 2023-11-16 | Power cable joint insulation state detection method |
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| CN117233558A true CN117233558A (en) | 2023-12-15 |
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| CN202311523780.3A Pending CN117233558A (en) | 2023-11-16 | 2023-11-16 | Power cable joint insulation state detection method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201656412U (en) * | 2010-03-26 | 2010-11-24 | 上海市电力公司 | Cable joint working environment control device |
| CN102200766A (en) * | 2010-03-26 | 2011-09-28 | 上海市电力公司 | 500kV cable joint work environment control system |
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| CN112629594A (en) * | 2020-12-31 | 2021-04-09 | 国网重庆市电力公司璧山供电分公司 | High-voltage cable operation parameter on-line monitoring alarm system |
| CN115327319A (en) * | 2022-08-24 | 2022-11-11 | 广东电网有限责任公司 | Method and system for monitoring insulation state of cable intermediate joint |
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2023
- 2023-11-16 CN CN202311523780.3A patent/CN117233558A/en active Pending
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| CN201656412U (en) * | 2010-03-26 | 2010-11-24 | 上海市电力公司 | Cable joint working environment control device |
| CN102200766A (en) * | 2010-03-26 | 2011-09-28 | 上海市电力公司 | 500kV cable joint work environment control system |
| CN205681088U (en) * | 2016-06-23 | 2016-11-09 | 安徽迪康电力科技有限公司 | A kind of the ground-buried high-tension cable divides having Auto-drainage dehydrating unit |
| CN206772345U (en) * | 2017-04-17 | 2017-12-19 | 山东中信电力技术有限公司 | A kind of cable tunnel inner cable running environment data collection station |
| CN207674656U (en) * | 2017-12-27 | 2018-07-31 | 华东送变电工程有限公司 | A kind of power cable connector conditions warrant device |
| CN112629594A (en) * | 2020-12-31 | 2021-04-09 | 国网重庆市电力公司璧山供电分公司 | High-voltage cable operation parameter on-line monitoring alarm system |
| CN115327319A (en) * | 2022-08-24 | 2022-11-11 | 广东电网有限责任公司 | Method and system for monitoring insulation state of cable intermediate joint |
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