CN217738313U - Real-time comprehensive monitoring device for distribution network cable connector operating environment - Google Patents
Real-time comprehensive monitoring device for distribution network cable connector operating environment Download PDFInfo
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- CN217738313U CN217738313U CN202123367331.3U CN202123367331U CN217738313U CN 217738313 U CN217738313 U CN 217738313U CN 202123367331 U CN202123367331 U CN 202123367331U CN 217738313 U CN217738313 U CN 217738313U
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Abstract
The utility model relates to a cable integrated monitoring device technical field specifically is a distribution network cable connects real-time integrated monitoring device of operational environment, including the collection system assembly, the monitoring devices main part, NB-IOT wireless communication device and NB-IOT server, the collection system assembly is including main capacitive coupling sensor, vice capacitive coupling sensor, temperature sensor and noise sensor, and through by the collection system assembly, the monitoring devices main part, NB-I OT wireless communication device and NB-IOT server constitute comprehensive monitoring devices can realize distribution network cable connects operational environment real-time supervision, and through the abnormal motion of monitoring these quantities of state, reach discovery equipment defect, adopt local discharge and temperature test means to monitor cable joint simultaneously, the aim at carries out state diagnosis to the joint under the operational condition, the accurate positioning of defect position, the quantitative analysis of defect degree, improve the reliability of power cable operation, and adopt external partial discharge sensor simple to operate.
Description
Technical Field
The utility model relates to a cable integrated monitoring technical field specifically is a distribution network cable connects real-time integrated monitoring device of operational environment.
Background
The power industry is the basic industry of national economic construction, has the position of playing a key role in national economic construction, the fundamental task of a power system is to supply electric energy safely, reliably and high-quality, along with the wide use of power cables, a large number of cable joints exist in an urban power supply system, faults are easily caused due to the action of various factors such as electricity, heat, machinery, environment and the like in the operation process, particularly the cable joints generate heat due to overload of electricity, hot weather, aging or overlarge contact resistance, the temperature is overhigh, the insulation at the joints is degraded, and even breakdown is caused to cause accidents.
Through cable fault data analysis, it is found that in a power cable line, a cable joint part is the weakest link of safe operation of a power system, due to the characteristics of the cable, the joint needs to be installed on site after being laid, the manufacture is limited by adverse factors of site environment and a manufacturing process, the crimping quality of a cable intermediate joint can only be checked in operation, the longer the operation time is, the more easily the joint is subjected to an overheating burn-through event, meanwhile, after a period of high-current operation, overheating and oxidation are often generated at the crimping point, so that the contact resistance is increased, the joint temperature is gradually increased, insulation aging is accelerated, and finally an insulating layer is damaged to cause accidents, and the statistical data of the operation faults of the power cable equipment of a national grid company system show that more than 70% of the operation accidents of the power cable are caused by the faults of the cable joint under the condition of not counting external force damage, and the cable joint faults are extremely high in the operation faults of the power cable, and extremely serious economic and social influences can be caused, so that the cable joint in operation is comprehensively monitored on line, and the safe and stable operation of the power cable is guaranteed.
Therefore, a real-time comprehensive monitoring device for the operation environment of the distribution network cable connector needs to be designed to solve the problems in the background art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a distribution network cable connects real-time integrated monitoring device of operational environment to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a distribution network cable connects real-time integrated monitoring devices of operational environment, includes collection system assembly, monitoring devices main part, NB-IOT wireless communication device and NB-IOT server, collection system assembly is including main capacitive coupling sensor, vice capacitive coupling sensor, temperature sensor and noise sensor, and the equal electric connection of main capacitive coupling sensor, vice capacitive coupling sensor, temperature sensor, noise sensor and monitoring devices main part, and monitoring devices main part and NB-IOT wireless communication device electric connection simultaneously, and NB-IOT wireless communication device has the customer end through NB-IOT server wireless connection simultaneously.
As the utility model discloses preferred scheme, main capacitive coupling sensor and vice capacitive coupling sensor all include PVC board, sensor main part and stainless steel staple bolt, and PVC board and sensor main part fixed connection, and the surface of PVC board is close to both ends department is established to stainless steel staple bolt cover simultaneously.
As the utility model discloses preferred scheme, fixed surface installs the terminal of a plurality of groups on the PVC board, and the inside embedding of PVC board installs the spacing strip of stainless steel, and the inner wall fixed mounting of PVC board has the red copper board simultaneously.
As the utility model discloses preferred scheme, sensor main part's both sides difference fixedly connected with TNC connects, connecting wire.
As the utility model discloses preferred scheme, the inside fixed mounting of monitoring devices main part has the battery, and the bottom of monitoring devices main part is provided with temperature measurement passageway, communication channel, signal channel and noise passageway, and the equal fixed mounting in back both sides of monitoring devices main part has the mounting bracket simultaneously.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses in, under the cable joint does not have the explosion-proof shell condition, the one side of main capacitive coupling sensor parcel on the cable joint, vice capacitive coupling sensor parcel is on the cable body outside the cable joint other side, and select as far as possible to connect within a meter range, and need dispose set capacitive coupling sensor at each intermediate head, one of them set is installed in monitoring the position, be used for gathering the partial discharge signal, another set is installed on other cable loops in cable tunnel, two parts distance and capacitive coupling sensor two parts distance of main and vice sensor keep unanimous and parallel mount, if there is not other cable near the cable of being monitored, can install noise sensor at cable that is monitored apart from capacitive coupling sensor five meters, install temperature sensor in cable joint department simultaneously, be used for gathering noise signal and temperature signal; the coupled pulse signal is transmitted to the monitoring device main body through the coaxial cable, the analog signal is converted into a data signal after being amplified and analog-digital converted, the data signal is transmitted to the NB-IOT server through the NB-IOT wireless communication device, the NB-IOT server respectively carries out different analyses and calculations on the signals of different sensors, the discharge signal data obtained through calculation are written into a database, after multiple times of collection, the data are extracted from the database for spectrogram analysis and data report, the data are displayed on a panel of a virtual detection system, and the real-time monitoring of the operation environment of the distribution network cable joint can be realized through a comprehensive monitoring device consisting of a collection device assembly, the monitoring device main body, the NB-IOT wireless communication device and the NB-IOT server, the method comprises the steps of detecting the state quantity of a cable joint, detecting the state quantity of the cable joint, and monitoring the state quantity of the cable joint through local discharge and temperature detection.
2. The utility model discloses in, main capacitive coupling sensor and vice capacitive coupling sensor adopt open-close type structure, can directly wrap up the coupling high frequency current signal on the conductor of measurand, and sensitivity is high, simple to operate, need not destroy the conductor, and this sensor has splendid instant reaction ability and high frequency characteristic, and the application that can be extensive is overhead in the high tension cable that no earth connection was drawn.
3. The utility model discloses in, temperature sensor adopts high accuracy industrial grade high accuracy temperature sensor, it collects the temperature measurement, AD converts integrative, its temperature measurement scope is from-55 ℃ - +125 ℃, can convert analog signal to digital signal in 1S, in addition, compare with temperature measuring element such as traditional thermistor, this sensor can directly read the temperature of testee, and can realize 9 ~ 12 digit numerical value reading modes through simple programming according to actual requirement, and the temperature measurement unit of building by it is small, high durability and convenient use is nimble, portable and installation.
Drawings
FIG. 1 is a schematic view of the overall plane connection structure of the present invention;
fig. 2 is a schematic view of the external structure of the front view plane of the capacitive coupling sensor according to the present invention;
FIG. 3 is a schematic cross-sectional plane structure diagram of a PVC sheet according to the present invention;
fig. 4 is a schematic view of a plane enlarged structure of a main body of the monitoring device of the present invention;
fig. 5 is a schematic diagram of NB-IOT network architecture in the present invention;
in the figure: 1. a collection device assembly; 11. a primary capacitive coupling sensor; 12. a secondary capacitive coupling sensor; 13. a temperature sensor; 14. a noise sensor; 2. a monitoring device main body; 21. a battery; 22. a temperature measuring channel; 23. a communication channel; 24. a signal channel; 25. a noise channel; 26. a mounting frame; 3. an NB-IOT wireless communication device; 4. an NB-IOT server; 5. a client; 451. an IOT platform; 452. an IOT core network; 453. an eNodeB; 6. PVC board; 61. a binding post; 62. a stainless steel limit strip; 63. a red copper plate; 7. a sensor body; 71. a TNC linker; 72. connecting a lead; 8. stainless steel staple bolt.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the scope of the present invention based on the embodiments of the present invention.
Please refer to fig. 1-5, the present invention provides a technical solution:
a distribution network cable joint operation environment real-time comprehensive monitoring device comprises a collecting device assembly 1, a monitoring device main body 2, an NB-IOT wireless communication device 3 and an NB-IOT server 4, wherein the collecting device assembly 1 comprises a main capacitive coupling sensor 11, an auxiliary capacitive coupling sensor 12, a temperature sensor 13 and a noise sensor 14, the main capacitive coupling sensor 11, the auxiliary capacitive coupling sensor 12, the temperature sensor 13, the noise sensor 14 and the monitoring device main body 2 are electrically connected, the monitoring device main body 2 is electrically connected with the NB-IOT wireless communication device 3, meanwhile, the NB-IOT wireless communication device 3 is wirelessly connected with a client terminal 5 through the NB-IOT server 4, under the condition that the cable joint is not provided with an explosion-proof shell, the main capacitive coupling sensor 11 wraps one side of the cable joint, the auxiliary capacitive coupling sensor 12 is wrapped on the outer cable body on the other side of the cable joint, the distance between the auxiliary capacitive coupling sensor and the cable joint is selected to be within 1 meter as far as possible, each middle joint is required to be provided with 2 sets of capacitive coupling sensors, one set of capacitive coupling sensors is arranged at a monitoring point position and used for collecting partial discharge signals, the other set of capacitive coupling sensors is arranged on other cable loops of a cable tunnel, the distance between two parts of the main capacitive coupling sensor and the distance between two parts of the capacitive coupling sensors are kept consistent and are arranged in parallel, if no other cable exists near a monitored cable, the noise sensor 14 can be arranged at a position, five meters away from the capacitive coupling sensors, of the monitored cable, and the temperature sensor 13 is arranged at the cable joint and used for collecting noise signals and temperature signals; the coupled pulse signal is transmitted to the monitoring device main body 2 through the coaxial cable, the analog signal is amplified, converted into a data signal through analog-digital conversion, then the data signal is transmitted to the NB-IOT server 4 through the NB-IOT wireless communication device 3, the NB-IOT server 4 carries out different analysis and calculation on the signals of different sensors respectively, the discharge signal data obtained through calculation are written into a database, after multiple times of acquisition, data are extracted from the database to carry out spectrogram analysis and data report, the data are displayed on a panel of a virtual detection system, the real-time monitoring of the operation environment of the distribution network cable connector can be realized through a comprehensive monitoring device consisting of the acquisition device assembly 1, the monitoring device main body 2, the NB-IOT wireless communication device 3 and the NB-IOT server 4, the equipment defect can be found by monitoring the abnormal motion of the state quantity, meanwhile, the cable connector is monitored by adopting a partial discharge and temperature test means, the aims at carrying out state diagnosis on the connector under the operation condition, the accurate positioning of the defect position and the quantitative analysis of the defect degree, the reliability of the operation of the external cable can be improved, meanwhile, the local discharge sensor can be widely applied to the high-voltage cable connector can be conveniently installed on the ground wire, and various on-site communication modules, and the high-communication modules can be conveniently adopted.
In the embodiment, referring to fig. 1, fig. 2 and fig. 3, each of the primary capacitive coupling sensor 11 and the secondary capacitive coupling sensor 12 includes a PVC plate 6, a sensor body 7 and a stainless steel anchor ear 8, the PVC plate 6 and the sensor body 7 are fixedly connected, and the stainless steel anchor ear 8 is sleeved on the outer surface of the PVC plate 6 near to two ends; a plurality of groups of binding posts 61 are fixedly arranged on the outer surface of the PVC plate 6, stainless steel limiting strips 62 are embedded in the PVC plate 6, and a red copper plate 63 is fixedly arranged on the inner wall of the PVC plate 6; the TNC connector 71 and the connecting wire 72 are fixedly connected to the two sides of the sensor main body 7 respectively, the main capacitive coupling sensor 11 and the auxiliary capacitive coupling sensor 12 are of an open-close type structure, can be directly wrapped on a measured conductor to couple a high-frequency current signal, are high in sensitivity and convenient to install, do not need to damage the conductor, have excellent instant reaction capacity and high-frequency characteristics, and can be widely applied to an intermediate connector of a high-voltage cable without being led out by a grounding wire.
In an embodiment, referring to fig. 1 and 4, a battery 21 is fixedly installed inside the monitoring device main body 2, a temperature measuring channel 22, a communication channel 23, a signal channel 24 and a noise channel 25 are arranged at the bottom of the monitoring device main body 2, and mounting brackets 26 are fixedly installed on both sides of the back of the monitoring device main body 2.
The working principle is as follows: under the condition that a cable joint is free of an explosion-proof shell, a main capacitive coupling sensor 11 wraps one side of the cable joint, an auxiliary capacitive coupling sensor 12 wraps the outer cable body of the other side of the cable joint, the distance between the main capacitive coupling sensor and the auxiliary capacitive coupling sensor is selected to be within one meter of the joint as far as possible, 2 sets of capacitive coupling sensors are required to be configured at each intermediate joint, one set of capacitive coupling sensors is installed at a monitoring point position and used for collecting partial discharge signals, the other set of capacitive coupling sensors is installed on other cable loops of a cable tunnel, the distance between the two parts of the main capacitive coupling sensors and the distance between the two parts of the capacitive coupling sensors are kept consistent and are installed in parallel, if no other cable is arranged near a monitored cable, a noise sensor 14 can be installed at a position of the monitored cable, five meters away from the capacitive coupling sensors, and a temperature sensor 13 is installed at the cable joint and used for collecting noise signals and temperature signals; the coupled pulse signal is transmitted to the monitoring device main body 2 through the coaxial cable, the analog signal is converted into a data signal after being amplified and analog-digital converted, the data signal is transmitted to the NB-IOT server 4 through the NB-IOT wireless communication device 3, the NB-IOT server 4 carries out different analyses and calculations on the signals of different sensors respectively, the discharge signal data obtained through calculation are written into a database, after multiple times of acquisition, the data are extracted from the database for spectrogram analysis and data report, the data are displayed on a panel of a virtual detection system, and the real-time monitoring of the operation environment of the distribution network cable joint can be realized through the comprehensive monitoring device consisting of the acquisition device assembly 1, the monitoring device main body 2, the NB-IOT wireless communication device 3 and the NB-IOT server 4, and the equipment defects can be discovered through the monitoring of the abnormal motion of the state quantities, the cable joint is monitored by adopting partial discharge and temperature test means, the aim is to carry out state diagnosis on the joint under the operation condition, accurately position the defect part and quantitatively analyze the defect degree, the reliability of the operation of the power cable is improved, meanwhile, an external partial discharge sensor is adopted, the cable joint can be widely applied to the high-voltage cable joint without leading out a grounding wire, the installation is convenient, an NB-IOT communication module is adopted for data communication, the cable joint is optimized and suitable for various field conditions and low power consumption design, the main capacitive coupling sensor 11 and the auxiliary capacitive coupling sensor 12 adopt an open-close structure, high-frequency current signals can be directly wrapped on a measured conductor to be coupled, the sensitivity is high, the installation is convenient, the conductor does not need to be damaged, the sensor has excellent instant reaction capability and high-frequency characteristics, and can be widely applied to the intermediate joint of the high-voltage cable without leading out the grounding wire, has certain popularization value.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a distribution network cable connects real-time integrated monitoring devices of operational environment, includes collection system assembly (1), monitoring devices main part (2), NB-IOT wireless communication device (3) and NB-IOT server (4), its characterized in that: collection system assembly (1) is including main capacitive coupling sensor (11), vice capacitive coupling sensor (12), temperature sensor (13) and noise sensor (14), and main capacitive coupling sensor (11), vice capacitive coupling sensor (12), temperature sensor (13), noise sensor (14) and the equal electric connection of monitoring devices main part (2), monitoring devices main part (2) and NB-IOT wireless communication device (3) electric connection simultaneously, meanwhile NB-IOT wireless communication device (3) have customer end (5) through NB-IOT server (4) wireless connection.
2. The device of claim 1, wherein the device comprises: the main capacitive coupling sensor (11) and the auxiliary capacitive coupling sensor (12) respectively comprise a PVC plate (6), a sensor main body (7) and a stainless steel hoop (8), the PVC plate (6) is fixedly connected with the sensor main body (7), and the stainless steel hoop (8) is sleeved on the outer surface of the PVC plate (6) close to two ends.
3. The device of claim 2, wherein the device comprises: PVC board (6) surface fixed mounting has terminal (61) of a plurality of groups, and the inside embedding of PVC board (6) installs stainless steel spacing strip (62), and the inner wall fixed mounting of PVC board (6) has copper plate (63) simultaneously.
4. The device of claim 2, wherein the device comprises: the TNC connector (71) and the connecting lead (72) are fixedly connected to two sides of the sensor main body (7) respectively.
5. The device of claim 1, wherein the device comprises: the inside fixed mounting of monitoring devices main part (2) has battery (21), and the bottom of monitoring devices main part (2) is provided with temperature measurement passageway (22), communication passageway (23), signal channel (24) and noise passageway (25), and the equal fixed mounting in back both sides of monitoring devices main part (2) has mounting bracket (26) simultaneously.
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| CN202123367331.3U CN217738313U (en) | 2021-12-29 | 2021-12-29 | Real-time comprehensive monitoring device for distribution network cable connector operating environment |
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| CN202123367331.3U CN217738313U (en) | 2021-12-29 | 2021-12-29 | Real-time comprehensive monitoring device for distribution network cable connector operating environment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116699329A (en) * | 2023-06-05 | 2023-09-05 | 国网江苏省电力有限公司南通供电分公司 | Substation space voiceprint visual imaging method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116699329A (en) * | 2023-06-05 | 2023-09-05 | 国网江苏省电力有限公司南通供电分公司 | Substation space voiceprint visual imaging method |
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