CN112350264A - Cable accessory temperature detection device and method - Google Patents
Cable accessory temperature detection device and method Download PDFInfo
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- CN112350264A CN112350264A CN202011075989.4A CN202011075989A CN112350264A CN 112350264 A CN112350264 A CN 112350264A CN 202011075989 A CN202011075989 A CN 202011075989A CN 112350264 A CN112350264 A CN 112350264A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/08—Cable junctions
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/22—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00022—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/30—State monitoring, e.g. fault, temperature monitoring, insulator monitoring, corona discharge
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Human Computer Interaction (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses a device and a method for detecting the temperature of a cable accessory, relating to the technical field of cable detection; the device comprises a temperature measuring device, a rectification energy storage device and a communication device, wherein the temperature measuring device is arranged on a cable joint and used for acquiring the temperature of the cable joint, and the rectification energy storage device and the communication device are arranged on the cable and used for acquiring electric energy through induction; the method comprises a detection step, wherein a temperature measuring device acquires temperature information of a cable joint and sends the temperature information to a management terminal through a communication device, the management terminal receives the temperature information of the cable joint sent by the temperature measuring device, and when the temperature information exceeds an early warning threshold value, the management terminal sends warning information; the cable intermediate joint detection is realized through a temperature measuring device, a rectification energy storage device, a communication device and the like.
Description
Technical Field
The invention relates to the technical field of cable detection, in particular to a device and a method for detecting the temperature of a cable accessory.
Background
With the continuous development of science and technology and the continuous improvement of living standard, people also have wider and wider application to electrical equipment. The increase of electrical appliances increases the burden of the cable circuit, the reliable operation monitoring is carried out on the cable circuit, and the power failure accident caused by the fact that the cable breaks down due to the fact that the power consumption is too large and exceeds the rated load of the cable is avoided. Therefore, the task of monitoring the operation of the cable line becomes more important at present.
The whole cable line is divided into a cable body and a cable joint, and the cable body is a whole cable which is manufactured when leaving a factory, so that artificial damage is eliminated, and the damage to the cable body is low. The cable connector is also called a cable connector, and after the cable is laid, in order to form a continuous line, all the sections of the cable must be connected into a whole, and the connection points are called cable connectors. The cable joints at the middle of the cable run are called intermediate joints and the cable joints at the two ends of the run are called termination joints. The cable joint is used for locking and fixing the incoming and outgoing lines, and plays a role in water resistance, dust prevention and vibration prevention.
Because the cable joint is formed by connecting the cables into a whole by manpower, multiple problems of insulation, sealing, aging and the like exist. The terminal of the cable is generally located in a transformer substation and a switching station, so that the environment is good, and observation and monitoring are convenient. The weakest part of the cable becomes the intermediate joint of the cable, and the bluish intermediate joint is in the middle part of the cable, and the environment is not easy to monitor, possibly in a calandria or a cable tunnel. In addition, in order to ensure the tightness, insulation and stability of the cable intermediate joint, the cable intermediate joint is often tightly wrapped, and even if problems occur, the problems are difficult to find.
At present, the monitoring mode of the cable intermediate joint still adopts manual regular inspection, and the operation condition and the damage degree of the cable intermediate joint can not be accurately obtained by original means such as looking and knocking, so that the power accident caused by the cable intermediate joint can not be avoided. According to investigation, the local area has hundreds of power failure accidents caused by the damage of the cable intermediate joint every year, and the maintenance time of the cable intermediate joint is at least two hours each time. However, each cable is used for maintaining the working and living electricity of hundreds of users, and the loss caused by sudden power failure in an accident is undoubtedly huge. It is necessary to effectively monitor the cable intermediate joint.
According to research, the intermediate joints of the cables are connected by manual work, impurities enter the joints due to long time or imperfect sealing measures, and flashover is caused. With the progress of flashover, temperature rise occurs to carbonize the insulating surface, thereby causing damage to the joint. The carbonization process is slowly and rapidly carried out, so that effective monitoring measures are taken for the cable intermediate joint, and cable accidents can be avoided.
Problems with the prior art and considerations:
how to solve the technical problem of detecting the cable intermediate head.
Disclosure of Invention
The invention aims to solve the technical problem of providing a device and a method for detecting the temperature of a cable accessory, which realize the detection of a cable middle joint through a temperature measuring device, a rectification energy storage device, a communication device and the like.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a cable accessory temperature detection device comprises a temperature measurement device, a rectification energy storage device and a communication device, wherein the temperature measurement device is arranged on a cable connector and used for obtaining the temperature of the cable connector, the rectification energy storage device and the communication device are arranged on a cable and used for obtaining electric energy through induction, the rectification energy storage device is respectively connected with the temperature measurement device and the communication device and supplies power, and the temperature measurement device is connected with the communication device and communicates with the communication device.
The further technical scheme is as follows: the temperature measuring device is a temperature measuring circuit.
The further technical scheme is as follows: the temperature measuring device is a temperature sensor.
The further technical scheme is as follows: the rectification energy storage device is a mutual inductor.
The further technical scheme is as follows: the communication device is a wireless transmission circuit.
The further technical scheme is as follows: the communication device is a wireless communication device.
The further technical scheme is as follows: the temperature measuring device is characterized by further comprising a power supply switch circuit and a comparator, the comparator is connected with the power supply switch circuit and communicates with the power supply switch circuit, the rectification energy storage device is connected with the comparator and supplies power, the rectification energy storage device is connected with the temperature measuring device through a first output end of the power supply switch circuit and supplies power, and the rectification energy storage device is connected with the communication device through a second output end of the power supply switch circuit and supplies power.
The further technical scheme is as follows: the temperature monitoring system is characterized by further comprising a management terminal and a detection module, the communication device is connected with the management terminal and communicates with the management terminal, the detection module is used for enabling the temperature measuring device to acquire temperature information of the cable connector and send the temperature information to the management terminal through the communication device, the management terminal receives the temperature information of the cable connector sent by the temperature measuring device, and when the temperature information exceeds an early warning threshold value, the management terminal sends out warning information.
A cable accessory temperature detection method is based on a management terminal, a temperature measuring device arranged on a cable connector and used for obtaining the temperature of the cable connector, a rectification energy storage device and a communication device arranged on a cable and used for obtaining electric energy through induction, wherein the rectification energy storage device is respectively connected with the temperature measuring device and the communication device and supplies power, the temperature measuring device is connected with the communication device and communicates with the communication device, the communication device is connected with the management terminal and communicates with the management terminal, the cable accessory temperature detection method comprises the following steps that detection is carried out, the temperature measuring device obtains the temperature information of the cable connector and sends the temperature information to the management terminal through the communication device, the management terminal receives the temperature information of the cable connector sent by the temperature measuring device, and when the temperature information exceeds an early warning threshold value.
The further technical scheme is as follows: and in the detection step, the management terminal stores and summarizes the temperature information of the cable joint and analyzes the running state of the cable joint.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
a cable accessory temperature detection device comprises a temperature measurement device, a rectification energy storage device and a communication device, wherein the temperature measurement device is arranged on a cable connector and used for obtaining the temperature of the cable connector, the rectification energy storage device and the communication device are arranged on a cable and used for obtaining electric energy through induction, the rectification energy storage device is respectively connected with the temperature measurement device and the communication device and supplies power, and the temperature measurement device is connected with the communication device and communicates with the communication device. According to the technical scheme, the cable middle joint is detected through the temperature measuring device, the rectification energy storage device, the communication device and the like.
A cable accessory temperature detection method is based on a management terminal, a temperature measuring device arranged on a cable connector and used for obtaining the temperature of the cable connector, a rectification energy storage device and a communication device arranged on a cable and used for obtaining electric energy through induction, wherein the rectification energy storage device is respectively connected with the temperature measuring device and the communication device and supplies power, the temperature measuring device is connected with the communication device and communicates with the communication device, the communication device is connected with the management terminal and communicates with the management terminal, the cable accessory temperature detection method comprises the following steps that detection is carried out, the temperature measuring device obtains the temperature information of the cable connector and sends the temperature information to the management terminal through the communication device, the management terminal receives the temperature information of the cable connector sent by the temperature measuring device, and when the temperature information exceeds an early warning threshold value. According to the technical scheme, the cable intermediate joint is detected through the steps of the temperature measuring device, the rectifying energy storage device, the communication device, the detection and the like.
See detailed description of the preferred embodiments.
Drawings
FIG. 1 is a schematic block diagram of embodiment 1 of the present invention;
FIG. 2 is a schematic block diagram of embodiment 2 of the present invention;
fig. 3 is a structural view of embodiments 2 to 4 of the present invention;
FIG. 4 is a schematic block diagram of embodiment 3 of the present invention;
fig. 5 is a schematic block diagram of embodiment 4 of the present invention.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways than those described herein, and it will be apparent to those of ordinary skill in the art that the present application is not limited to the specific embodiments disclosed below.
Example 1:
as shown in figure 1, the invention discloses a cable accessory temperature detection device, which comprises a management terminal, a temperature measurement device fixed on a cable joint and used for obtaining the temperature of the cable joint, a rectification energy storage device fixed on the cable and used for obtaining electric energy through induction, a power supply switch circuit, a comparator, a communication device and a detection module, wherein the management terminal is a fixed intelligent terminal, the temperature measurement device is a temperature measurement circuit, the rectification energy storage device is a mutual inductor, the communication device is a wireless transmission circuit, the comparator is connected with the power supply switch circuit and is in one-way communication, the rectification energy storage device is connected with the comparator and supplies power, the rectification energy storage device is connected with the temperature measurement circuit through a first output end of the power supply switch circuit and supplies power, the rectification energy storage device is connected with the wireless transmission circuit through a second output end of the power supply switch circuit and is supplied power, the rectification energy storage device is connected with the comparator through the reference voltage generator, and the temperature measuring circuit is in wireless connection and one-way communication with the intelligent terminal through the wireless transmitting circuit.
The detection module is a program module and is used for acquiring temperature information of the cable joint by the temperature measuring circuit and sending the temperature information to the intelligent terminal through the wireless sending circuit, the intelligent terminal receives the temperature information of the cable joint sent by the temperature measuring circuit, and when the temperature information exceeds an early warning threshold value, the intelligent terminal sends warning information.
The management terminal is a desktop computer, and the desktop computer, the temperature measuring circuit, the mutual inductor, the wireless transmitting circuit, the power supply switching circuit, the comparator, the reference voltage generator and the corresponding communication connection technology are not repeated in the prior art.
Example 2:
As shown in fig. 2 and 3, the invention discloses a cable accessory temperature detection device, which comprises a management terminal, a temperature measurement device fixed on a cable connector and used for acquiring the temperature of the cable connector, a rectification energy storage device and a communication device which are fixed on a cable and used for acquiring electric energy through induction, and a detection module, wherein the management terminal is a mobile intelligent terminal, namely a smart phone, the temperature measurement device is a temperature sensor 2, the rectification energy storage device is a mutual inductor, the communication device is a wireless communication device, the rectification energy storage device is connected with the temperature sensor 2 and supplies power, the rectification energy storage device is connected with the wireless communication device and supplies power, and the temperature sensor 2 is wirelessly connected with the smart phone through the wireless communication device and communicates in a one-way mode.
The detection module is a program module and is used for enabling the temperature sensor 2 to acquire temperature information of the cable joint and send the temperature information to the smart phone through the wireless communication device, the smart phone receives the temperature information of the cable joint sent by the temperature sensor 2, and when the temperature information exceeds an early warning threshold value, the smart phone sends out warning information.
The smart phone, the temperature sensor, the transformer, the wireless communication device and the corresponding communication connection technology are not described herein again for the prior art.
Example 3:
embodiment 3 is different from embodiment 2 in that the management terminal is a tablet computer.
As shown in fig. 3 and 4, the invention discloses a cable accessory temperature detection device, which comprises a management terminal, a temperature measurement device fixed on a cable connector and used for acquiring the temperature of the cable connector, a rectification energy storage device and a communication device which are fixed on a cable and used for acquiring electric energy through induction, and a detection module, wherein the management terminal is a mobile intelligent terminal, namely a tablet personal computer, the temperature measurement device is a temperature sensor 2, the rectification energy storage device is a mutual inductor, the communication device is a wireless communication device, the rectification energy storage device is connected with the temperature sensor 2 and supplies power, the rectification energy storage device is connected with the wireless communication device and supplies power, and the temperature sensor 2 is wirelessly connected with the tablet personal computer through the wireless communication device and communicates in a one-way mode.
The detection module is a program module and is used for the temperature sensor 2 to acquire temperature information of the cable connector and send the temperature information to the tablet personal computer through the wireless communication device, the tablet personal computer receives the temperature information of the cable connector sent by the temperature sensor 2, and when the temperature information exceeds an early warning threshold value, the tablet personal computer sends warning information.
The tablet computer, the temperature sensor, the transformer, the wireless communication device and the corresponding communication connection technology are not described in detail herein for the prior art.
Example 4:
embodiment 4 is different from embodiment 2 in that the management terminal is a notebook computer.
As shown in fig. 3 and 5, the invention discloses a cable accessory temperature detection device, which comprises a management terminal, a temperature measurement device fixed on a cable connector and used for acquiring the temperature of the cable connector, a rectification energy storage device and a communication device which are fixed on a cable and used for acquiring electric energy through induction, and a detection module, wherein the management terminal is a mobile intelligent terminal, namely a notebook computer, the temperature measurement device is a temperature sensor 2, the rectification energy storage device is a mutual inductor, the communication device is a wireless communication device, the rectification energy storage device is connected with the temperature sensor 2 and supplies power, the rectification energy storage device is connected with the wireless communication device and supplies power, and the temperature sensor 2 is wirelessly connected with the notebook computer through the wireless communication device and communicates in a one-way mode.
The detection module is a program module and is used for the temperature sensor 2 to acquire the temperature information of the cable joint and send the temperature information to the notebook computer through the wireless communication device, the notebook computer receives the temperature information of the cable joint sent by the temperature sensor 2, and when the temperature information exceeds the early warning threshold value, the notebook computer sends out warning information.
The notebook computer, the temperature sensor, the transformer, the wireless communication device and the corresponding communication connection technology are not described herein in detail for the prior art.
Example 5:
the invention discloses a cable accessory temperature detection method, which is based on a system of embodiment 1 and comprises the following steps:
and detecting, wherein the temperature measuring device acquires the temperature information of the cable joint and sends the temperature information to the management terminal through the communication device, the management terminal receives the temperature information of the cable joint sent by the temperature measuring device, and the management terminal sends alarm information when the temperature information exceeds an early warning threshold value.
Example 6:
the invention discloses a cable accessory temperature detection method, which is based on a system of an embodiment 2 and comprises the following steps:
and detecting, wherein the temperature measuring device acquires temperature information of the cable joint and sends the temperature information to the management terminal through the communication device, the management terminal receives the temperature information of the cable joint sent by the temperature measuring device, the management terminal stores and summarizes the temperature information of the cable joint, the operation state of the cable joint is analyzed, and when the temperature information exceeds an early warning threshold value, the management terminal sends warning information.
The purpose of the application is:
because the environment that cable intermediate head is located is more abominable, so need guarantee the leakproofness of cable intermediate head, under the prerequisite that realizes that temperature sensor can obtain accurate temperature, do not destroy cable intermediate head's leakproofness, do not influence the normal operating of cable simultaneously yet. And the maintenance of cable intermediate head needs to cut off the power supply with whole circuit, and maintenance duration needs two hours at least, and is with higher costs, so need consider to place temperature sensor inside the back to cable intermediate head, can guarantee the long-term operation of device, need not frequent change moreover and maintain. More importantly, most of 10KV electric wires and cables are laid in underground cable tunnels and underground pipes, so that the conditions of power taking and wiring are not provided, long-term operation of the temperature sensor is guaranteed, data information acquired by the sensor can be timely transmitted, and the purpose of monitoring operation of the cable intermediate connector is achieved.
The invention concept of the application is as follows:
in the past, the inspection work of the cable intermediate joint can only judge the running quality of the cable according to the damage degree of the appearance of the cable, the internal fault of the joint cannot be effectively found in the mode, and the cable accident cannot be avoided after the inspection often. Therefore, in order to effectively avoid the occurrence of cable accidents and know the operation condition inside the cable intermediate joint, the built-in temperature sensor is adopted to acquire partial discharge and temperature data from the inside of the cable intermediate joint, and the partial discharge and temperature change conditions inside the cable are accurately monitored. Compared with manual observation and touch modes, the method is more reliable and safer.
The technical characteristics of this application:
adopt a miniature temperature sensor to place in cable intermediate head, its key technology lies in: using a microminiature sensor, the size of the sensor is length by width by height: 2.8 is 2.3 is 1.2cm, greatly reduce the volume of sensor, guarantee that the sensor can embed in the cable intermediate head, can not influence the normal operating of cable moreover, guarantee the leakproofness of cable intermediate head. The method adopts a mutual inductor to obtain induced current from the 10KV alternating current cable, provides electric energy for the temperature sensor, and realizes the same service life of the sensor and the cable. Adopt 433M radio frequency signal's mode to realize the wireless transmission of sensor, give intelligent terminal with the temperature transmission of gathering, intelligent terminal gathers statistics through the temperature information that will acquire, analyzes out cable intermediate head's running state, when the temperature suddenly increases or is higher than average temperature value, just can send the warning.
The technical advantages of this application:
1. the 10KV cable single-phase copper core junction 1 is sleeved with a cable insulation tape 6 for cable insulation, a cable cold shrink tube 5 is sleeved on the outer layer of the cable insulation tape 6 to ensure the airtightness of the cable copper core junction 1, and a cable copper shielding net 4 is sleeved on the outer side of the cable cold shrink tube 5 to ensure the grounding of the cable. The micro temperature sensor 2 is tightly attached to the outer side of the cable copper shielding net 4 and tightly bound through the foam alloy ferrule 3, and then the micro temperature sensor is fixed through a turnbuckle 9 of the foam alloy ferrule.
2. The micro sensor 2 is placed at the outer side of the cable copper shielding net 4 and tightly attached to the surface of the cable copper shielding net 4, is bound to the outer side of the cable copper shielding net 4 through the foam alloy ferrule 3 and is fixed through a turnbuckle 9 of the foam alloy ferrule.
3. The length of the micro sensor 2 is 2.8cm, the width is 2.cm, and the height is 1.2 cm.
4. The width of the foamed alloy ferrule 3 was 1.5 cm.
Description of the technical solution:
as shown in figure 1, a power supply switch is arranged between the rectification energy storage part and the temperature measurement part, and the on-off of the power supply switch is controlled by a comparator. The device is provided with the inductive rectifying energy storage component, and is matched with the comparator to realize energy storage analysis, so that power supply for temperature measurement current can be realized; the magnetoelectric conversion efficiency is high, the influence of the environment is small, uninterrupted temperature detection can be realized, and the cost is low.
As shown in fig. 3, the present example includes: the temperature sensor comprises a micro temperature sensor, a 10KV cable, a foam alloy ferrule, a cable copper shielding net, a cable cold-shrink tube, a cable insulating tape, a cable copper shielding layer, a cable outer conducting layer and a foam alloy ferrule turnbuckle.
The miniature temperature sensors are arranged between a copper shielding net sleeve layer of a cable intermediate joint and a cable waterproof insulating layer, each 10KV cable is divided into three phases, the two ends of each phase of joint are respectively provided with one miniature temperature sensor, and 6 miniature temperature sensors are arranged in a complete 10KV cable intermediate joint. The miniature temperature sensor is bound on the cable through the foam alloy ferrule and is locked and fixed through the foam alloy ferrule turnbuckle. After the cable is electrified, alternating current on each phase of the cable can generate an alternating magnetic field, and a mutual inductor coil in the miniature temperature sensor obtains induced current through the alternating magnetic field to provide electric energy for the miniature temperature sensor. The temperature sensor transmits acquired temperature information to the 433M wireless radio frequency device through the thermistor tightly attached to the surface of the cable, the 433M wireless radio frequency device converts acquired temperature signals into 433M radio frequency signals and transmits the radio frequency signals to the intelligent terminal in a wireless transmission mode, the intelligent terminal collects acquired data and counts the data, and the internal temperature environment condition of the cable is analyzed.
In fig. 3, 1 is the connection of the single-phase copper core of the 10KV cable; 2 is a micro temperature sensor; 3 is a foam alloy ferrule; 4 is a cable copper shielding net; 5 is a cable cold-shrink tube; 6 is a cable insulating tape; 7 is a cable copper shielding layer; 8 is an outer semiconductive layer; 9 is a turnbuckle of a foam alloy ferrule.
After the application runs secretly for a period of time, the feedback of field technicians has the advantages that:
the invention relates to the technical field of temperature detection of a 10KV alternating current power cable intermediate joint, and compared with the existing cable intermediate joint which depends on detection means such as manual observation, touch, knocking and the like, the cable accessory miniature detection device enhances the monitoring of the operation environment in the cable in the aspect of power utilization, and can accurately analyze whether the cable intermediate joint has potential safety hazards and potential failure hazards according to the data condition transmitted by a sensor, so that the reliability of power utilization is improved. The economic loss of enterprises, users and the like caused by sudden power failure is reduced in the aspect of economy, and the property safety of the users is guaranteed.
A cable accessory temperature detection device comprises a temperature measurement device, a rectification energy storage device and a communication device, wherein the temperature measurement device is arranged on a cable connector and used for obtaining the temperature of the cable connector, the rectification energy storage device and the communication device are arranged on a cable and used for obtaining electric energy through induction, the rectification energy storage device is respectively connected with the temperature measurement device and the communication device and supplies power, and the temperature measurement device is connected with the communication device and communicates with the communication device. According to the technical scheme, the cable middle joint is detected through the temperature measuring device, the rectification energy storage device, the communication device and the like.
A cable accessory temperature detection method is based on a management terminal, a temperature measuring device arranged on a cable connector and used for obtaining the temperature of the cable connector, a rectification energy storage device and a communication device arranged on a cable and used for obtaining electric energy through induction, wherein the rectification energy storage device is respectively connected with the temperature measuring device and the communication device and supplies power, the temperature measuring device is connected with the communication device and communicates with the communication device, the communication device is connected with the management terminal and communicates with the management terminal, the cable accessory temperature detection method comprises the following steps that detection is carried out, the temperature measuring device obtains the temperature information of the cable connector and sends the temperature information to the management terminal through the communication device, the management terminal receives the temperature information of the cable connector sent by the temperature measuring device, and when the temperature information exceeds an early warning threshold value. According to the technical scheme, the cable intermediate joint is detected through the steps of the temperature measuring device, the rectifying energy storage device, the communication device, the detection and the like.
Claims (10)
1. A cable accessory temperature detection device is characterized in that: the temperature measuring device is arranged on the cable connector and used for obtaining the temperature of the cable connector, and the rectification energy storage device and the communication device are arranged on the cable and used for obtaining electric energy through induction.
2. The cable accessory temperature detection device of claim 1, wherein: the temperature measuring device is a temperature measuring circuit.
3. The cable accessory temperature detection device of claim 1, wherein: the temperature measuring device is a temperature sensor.
4. The cable accessory temperature detection device of claim 1, wherein: the rectification energy storage device is a mutual inductor.
5. The cable accessory temperature detection device of claim 1, wherein: the communication device is a wireless transmission circuit.
6. The cable accessory temperature detection device of claim 1, wherein: the communication device is a wireless communication device.
7. The cable accessory temperature detection device of claim 1, wherein: the temperature measuring device is characterized by further comprising a power supply switch circuit and a comparator, the comparator is connected with the power supply switch circuit and communicates with the power supply switch circuit, the rectification energy storage device is connected with the comparator and supplies power, the rectification energy storage device is connected with the temperature measuring device through a first output end of the power supply switch circuit and supplies power, and the rectification energy storage device is connected with the communication device through a second output end of the power supply switch circuit and supplies power.
8. The cable accessory temperature detection device of claim 1, wherein: the temperature monitoring system is characterized by further comprising a management terminal and a detection module, the communication device is connected with the management terminal and communicates with the management terminal, the detection module is used for enabling the temperature measuring device to acquire temperature information of the cable connector and send the temperature information to the management terminal through the communication device, the management terminal receives the temperature information of the cable connector sent by the temperature measuring device, and when the temperature information exceeds an early warning threshold value, the management terminal sends out warning information.
9. A cable accessory temperature detection method is characterized by comprising the following steps: based on management terminal, the temperature measuring device who is used for acquireing the cable joint temperature of setting on the cable joint, set up rectification energy memory and the communication device who is used for obtaining the electric energy through the response on the cable, rectification energy memory is connected and supplies power with temperature measuring device and communication device respectively, temperature measuring device is connected and communicates with communication device, communication device is connected and communicates with management terminal, including following step, detect, temperature measuring device acquires the temperature information of cable joint and sends management terminal through communication device, and management terminal receives the temperature information of the cable joint that temperature measuring device sent, and when temperature information exceeded early warning threshold value, management terminal sent alarm information.
10. The cable accessory temperature detection method of claim 9, wherein: and in the detection step, the management terminal stores and summarizes the temperature information of the cable joint and analyzes the running state of the cable joint.
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Application publication date: 20210209 |