CN207423387U - A kind of cable intermediate joint temperature based on temperature difference method rises on-Line Monitor Device - Google Patents
A kind of cable intermediate joint temperature based on temperature difference method rises on-Line Monitor Device Download PDFInfo
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- CN207423387U CN207423387U CN201721188505.0U CN201721188505U CN207423387U CN 207423387 U CN207423387 U CN 207423387U CN 201721188505 U CN201721188505 U CN 201721188505U CN 207423387 U CN207423387 U CN 207423387U
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000005259 measurement Methods 0.000 claims abstract description 6
- 238000012216 screening Methods 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000004891 communication Methods 0.000 claims description 13
- 239000000779 smoke Substances 0.000 claims description 13
- 238000012544 monitoring process Methods 0.000 abstract description 12
- 238000001514 detection method Methods 0.000 abstract description 4
- 230000008859 change Effects 0.000 description 5
- 238000009413 insulation Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000005684 electric field Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 235000019504 cigarettes Nutrition 0.000 description 2
- 230000005292 diamagnetic effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model is related to a kind of cable intermediate joint temperature based on temperature difference method to rise on-Line Monitor Device, containing temperature sensing module, microprocessor module, the I/O mouths connection of temperature sensing module output terminal and microprocessor circuit.On-Line Monitor Device is risen compared to general cable connector temperature simultaneously, environment temperature sensor is added, influence of the environment temperature to measurement can be excluded, the accuracy of temperature of cable junction detection is improved, realizes the on-line monitoring function to cable connector Wen Sheng.
Description
Technical field
The utility model is related to field of electrical equipment more particularly to a kind of cable intermediate joint temperature to rise on-line monitoring dress
It puts.
Background technology
Power equipment is caused due to influences such as production quality, installation quality, run time, usage frequency and working environments
Installation place contact is unreliable, and Wen Sheng exceeds the allowed band of national regulation so that cable terminal insulation aging or even punctures
The serious consequences such as damage.The temperature of intermediate joint of electric cable is to reflect the important parameter of its operating status.Cause cable connector
Temperature rise immediate cause is connector long operational time, crimp head be not tight, contact resistance is excessive etc..Caused by connector longtime running
Phenomena such as overheat, burn-through insulation, easily triggers fire, so as to cause serious accident and economic loss.
Cable connector is superheated to accident, and development speed is slow, the time is longer, using the method for traditional artificial inspection
Reliability is low, real-time is poor, it is difficult to timely discovering device security risk.Therefore, how temperature of cable junction is effectively performed
Automatic be monitored and controlled has important practical significance.
In electric system, since the factors such as cable connector contact resistance is excessive, overload cause connector temperature excessively high, make
It obtains joint insulation variation or burning collapses burst accident and causes fire, bring serious security risk to industrial production, even result in
The major accident that equipment forced outage, short time can not resume production reduces the reliability of electric power netting safe running, causes great warp
Ji loss.
Cable connector is the most weak link of power cable, and the more long easier generation of run time overheats burn-through accident.It connects
Head temperature is to weigh the whether good important indicator of state of insulation in cable connector operation, and temperature change is in normal operation
Under be caused by electric current is by inner conductor.When cable is when normal duty is run, the temperature inside connector is about 90
℃；When cable oepration at full load, connector temperature can be up to 250 DEG C or so；When temperature raises again, the oxide-film of joint adds
Thickness, contact resistance increase therewith, and under the action of certain conduction time, the dielectric of connector decomposes carbonization as nonisulated object,
Cause failure.Therefore, accurately understand the temperature of cable connector core, there is weight whether normal operation to monitoring cable connector
Want meaning.The present invention proposes that a kind of cable intermediate joint temperature based on temperature difference method rises on-Line Monitor Device therefore, which leads to
The difference of monitoring cable intermediate joint temperature and environment temperature in real time is crossed, measuring device criterion is solved and is subject to ambient temperature effect
Problem.
Utility model content
The utility model mainly solve in the prior art using traditional artificial inspection cable connector 4 method there are manpower,
Material resources, financial resources waste and monitoring reliability is low, real-time is poor, it is difficult to which timely discovering device security risk provides one kind and is based on
The cable intermediate joint temperature of temperature difference method rises on-Line Monitor Device, can accurately obtain temperature of cable junction, it be carried out in real time
Monitoring, it is ensured that the healthy and safe operation of cable.
The above-mentioned technical problem of the utility model is mainly by being addressed with following technical proposals：One kind is based on temperature
The cable intermediate joint temperature of the poor method of degree rises on-Line Monitor Device, contains temperature sensing module, microprocessor module, temperature sensing mould
The I/O of block output terminal and microprocessor circuit mouths connect.
Temperature sensing module, temperature sensor and an environment temperature sensing including multiple measurement temperature of cable junction
Device.
Microprocessor module, including screening unit, equal value cell, difference unit, prewarning unit, screening unit, average list
Member, difference unit, prewarning unit are sequentially connected.Screening unit carries out the temperature of cable junction value surveyed in temperature sensing module
Screening Treatment, obtains accurate temperature value, and equal value cell carries out garbled temperature value average value processing, and difference unit is by average
Treated, and temperature value carries out difference processing with the temperature value that environmental sensor measures, and prewarning unit will obtain cable connector Wen Sheng
Value by with temperature alarm threshold value comparison, judge whether to alarm, when cable connector temperature rise value be more than temperature alarm threshold value when,
Microprocessor sends alarm signal.
As a preferred embodiment, temperature sensor is made of thermistor and oscillating circuit.No.1 temperature sensor,
No. two temperature sensors, No. three temperature sensors are uniformly mounted on cable shaft cable intermediate joint, and each temperature sensor uses
Thermal insulation material is fixed at cable intermediate joint electric field stress concentration and intermediate connections, temperature sensor convert temperature signal
It is exported into frequency signal, temperature value is made to be corresponded with frequency values, is exported using frequency signal, improve the diamagnetic field of device and electric field
Interference performance.Environment temperature sensor monitors cable shaft environment temperature in real time.
As a preferred embodiment, which further includes smoke sensor device, water level sensor, attitude transducer, communication connect
Mouth, display circuit, key circuit, addressing circuit, power circuit.
Attitude transducer uses three-axis gyroscope, can be with tri- direction situation of movement of detection cable well X, Y, Z.
Smoke sensor device uses ion smoke alarm, very sensitive to the sensing of small smoke particle, to various cigarettes
It can equalizer response.
Water level sensor uses float type water level sensor, and equipment is most ripe, suitable for the water level monitoring of cable shaft.
Display circuit, the related data in display microprocessor.
Key circuit sets temperature alarm threshold value and temperature difference threshold in the microprocessor
Communication interface, when temperature rise value is more than set alert thresholds, microprocessor sends police by communication interface to computer
Show that signal notifies staff.
Addressing circuit can quick and precisely position failure cable joint location, convenient in time to failure cable connector
It is repaired, realizes and on-line monitoring function is risen to cable shaft cable connector temperature.
Power circuit, power circuit using CT power solar powered or battery powered or 20VAC power supply or they
It combines and the cable intermediate joint temperature liter on-Line Monitor Device of temperature difference method is powered, it is ensured that the stability of power supply power supply.
Therefore, the utility model has the advantages that：A kind of cable intermediate joint temperature based on temperature difference method is provided to rise online
Monitoring device, microprocessor are handled by the temperature value surveyed to temperature sensing module, obtain accurate cable connector temperature
It appreciates, compared to saving substantial amounts of human and material resources and financial resources by the way of artificial.Simultaneously compared to general cable connector temperature
On-Line Monitor Device is risen, environment temperature sensor is added, influence of the environment temperature to measurement can be excluded, cable is improved and connect
The accuracy of head temperature detection, realizes the on-line monitoring function to cable connector Wen Sheng.
Description of the drawings
Attached drawing 1 is the structure diagram of the temperature of cable junction sensor installation of present system device；
Attached drawing 2 is the concentration measurement module structure chart of present system device.
In 1-No.1 temperature sensor 2-two, the 4-cable of temperature sensor of temperature sensor 3-three
Between the value cell 9-difference list of 7-screening unit of connector 5-temperature sensing module, 6-microprocessor module 8-
11-smoke sensor device of first 10-prewarning unit, 12 water level sensor 13-attitude transducer, 14-communication interface
15 computer 16-display circuit, 17-addressing circuit, 18-power circuit, 19-key circuit, 20-environment temperature
Spend sensor.
Specific embodiment
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings：
Embodiment：
The present embodiment is that a kind of 4 temperature of cable intermediate joint based on temperature difference method rises on-Line Monitor Device, as shown in Figure 1,
The temperature sensor 2, three of No.1 temperature sensor 1, two temperature sensor 3 is uniformly mounted on cable shaft cable intermediate joint
On, each temperature sensor is fixed on using thermal insulation material at cable intermediate joint electric field stress concentration and intermediate connections.Such as Fig. 2
Shown, the concentration measurement module structure chart of present system device includes temperature sensing module 5, key circuit 19, microprocessor
Module 6, screening unit 7, equal value cell 8, difference unit 9, prewarning unit 10, power circuit 18, smoke sensor device 11, water level pass
Sensor 12, attitude transducer 13, communication interface 14, display circuit 16, addressing circuit 17, computer 15；Wherein temperature sensing
Module includes No.1 temperature sensor, No. two temperature sensors, 3 temperature sensors, environment temperature sensor 20, No.1 temperature
Spend sensor, No. two temperature sensors, No. three temperature sensors, environment temperature sensor output terminal respectively with microprocessor mould
The I/O mouths connection of block；The output terminal of key circuit and the I/O mouths of microprocessor module connect；The output terminal of power circuit with it is micro-
The power end connection of processor module；The output terminal of smoke sensor device and the I/O mouths of microprocessor module connect；Water level sensor
Output terminal and microprocessor module A/D ports connect；The output terminal of attitude transducer and the digital mouth of microprocessor module
Connection；The input terminal of display circuit and the I/O mouths of microprocessor module connect；The output terminal and microprocessor of addressing circuit
The I/O mouths connection of module；The input terminal of communication interface and the port of microprocessor module connect.
Temperature sensor is made of thermistor and oscillating circuit, the temperature of cable junction signal that temperature sensor will measure
Be converted into frequency signal output, correspond temperature value and frequency values, exported using frequency signal, improve the diamagnetic field of device and
Electric jamming ability.
Microprocessor module, including screening unit, equal value cell, difference unit, prewarning unit, screening unit, average list
Member, difference unit, prewarning unit are sequentially connected.Screening unit carries out the temperature of cable junction value surveyed in temperature sensing module
Screening Treatment, obtains accurate temperature value, and equal value cell carries out garbled temperature value average value processing, and difference unit is by average
Treated, and temperature value carries out difference processing with the temperature value that environmental sensor measures, and prewarning unit will obtain cable connector Wen Sheng
Value by with temperature alarm threshold value comparison, judge whether to alarm, when cable connector temperature rise value be more than temperature alarm threshold value when,
Microprocessor sends alarm signal.
Power circuit, power circuit using CT power solar powered or battery powered or 20VAC power supply or they
It combines and the cable intermediate joint temperature liter on-Line Monitor Device of temperature difference method is powered, it is ensured that the stability of power supply power supply.
Attitude transducer uses three-axis gyroscope, can be prevented artificial with tri- direction situation of movement of detection cable well X, Y, Z
Removal cable manhole cover plate.
Smoke sensor device uses ion smoke alarm, very sensitive to the sensing of small smoke particle, to various cigarettes
Energy equalizer response, when failure triggers fire at cable connector, ion smoke alarm can detect and send signal in time
Fire information is sent to by the prewarning unit into microprocessor module, microprocessor module by communication interface with wireless signal
Computer can in time be handled failure, improved security and reduced loss.
Water level sensor uses float type water level sensor, and equipment is most ripe, suitable for the water level monitoring of cable shaft, according to
Actual conditions set watermark threshold, and water level sensor transfers information to microprocessor after water level reaches threshold value, and microprocessor leads to
It crosses communication interface and will send information to computer, can drainage sunk well be carried out to cable shaft in advance.
Display circuit, the related data in display microprocessor.
Key circuit sets temperature alarm threshold value and temperature difference threshold in the microprocessor
Communication interface, when temperature rise value is more than set alert thresholds, microprocessor sends police by communication interface to computer
Show that signal notifies staff.
Addressing circuit can quick and precisely position failure cable joint location, convenient in time to failure cable connector
It is repaired, realizes and on-line monitoring function is risen to cable shaft cable connector temperature.
The utility model by being handled successively with screening unit, equal value cell, difference unit surveyed temperature of cable junction,
Cable intermediate joint temperature rise value is obtained, when temperature rise value is more than set alert thresholds, microprocessor prewarning unit is connect by communication
Mouthful sending alarm signal to computer notifies staff, and addressing circuit determines failure cable joint location occur, in time into
It robs and repaiies, realize and on-line monitoring function is risen to cable shaft cable connector temperature.
It is upper described, limitation in any form is not done to the utility model, although the utility model is preferably to implement
Case discloses as above, however is not limited to the utility model, and any person skilled in the art is not departing from this hair
In the range of bright technical solution, when structure and technology contents using the disclosure above make a little change or are modified to equivalent change
The equivalence enforcement case of change, but every content without departing from technical solution of the present invention, technical spirit according to the invention to
Any simple modification, equivalent change and modification that upper case study on implementation is made, still belongs to technical solutions of the utility model scope.
Claims (9)
1. a kind of cable intermediate joint temperature based on temperature difference method rises on-Line Monitor Device, it is characterized in that, contain temperature sensing mould
The I/O mouths connection of block, microprocessor module, temperature sensing module output terminal and microprocessor circuit;
Temperature sensing module includes the temperature sensor and an environment temperature sensor of multiple measurement temperature of cable junction;
Microprocessor module, including screening unit, equal value cell, difference unit, prewarning unit, screening unit, equal value cell, difference
Value cell, prewarning unit are sequentially connected, and the temperature sensor for measuring temperature of cable junction is connected with screening unit, environment temperature
Sensor is connected with difference unit.
2. a kind of cable intermediate joint temperature based on temperature difference method according to claim 1 rises on-Line Monitor Device, special
Sign is that temperature sensor is made of thermistor and oscillating circuit.
3. a kind of cable intermediate joint temperature based on temperature difference method according to claim 1 rises on-Line Monitor Device, special
Sign is to further include water level sensor, the A/D ports connection of water level sensor output terminal and microprocessor circuit.
4. a kind of cable intermediate joint temperature based on temperature difference method according to claim 1 rises on-Line Monitor Device, special
Sign is to further include smoke sensor device, the I/O mouths connection of smoke sensor device output terminal and microprocessor circuit.
5. a kind of cable intermediate joint temperature based on temperature difference method according to claim 1 rises on-Line Monitor Device, special
Sign is to further include key circuit, the I/O mouths connection of key circuit output terminal and microprocessor circuit.
6. a kind of cable intermediate joint temperature based on temperature difference method according to claim 1 rises on-Line Monitor Device, special
Sign is to further include addressing circuit, the I/O mouths connection of addressing circuit output terminal and microprocessor circuit.
7. a kind of cable intermediate joint temperature based on temperature difference method according to claim 1 rises on-Line Monitor Device, special
Sign is to further include attitude transducer, the digital mouth connection of attitude transducer output terminal and microprocessor circuit.
8. a kind of cable intermediate joint temperature based on temperature difference method according to claim 1 rises on-Line Monitor Device, special
Sign is to further include display circuit, and display circuit input terminal connects the I/O mouths of microprocessor circuit.
9. a kind of cable intermediate joint temperature based on temperature difference method according to claim 1 rises on-Line Monitor Device, special
Sign is to further include communication interface, the port connection of communication interface input end and microprocessor circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721188505.0U CN207423387U (en) | 2017-09-15 | 2017-09-15 | A kind of cable intermediate joint temperature based on temperature difference method rises on-Line Monitor Device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721188505.0U CN207423387U (en) | 2017-09-15 | 2017-09-15 | A kind of cable intermediate joint temperature based on temperature difference method rises on-Line Monitor Device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107702804A (en) * | 2017-09-15 | 2018-02-16 | 国网浙江嘉善县供电公司 | A kind of cable intermediate joint temperature rise on-line monitoring system and method based on temperature difference method |
| CN109541357A (en) * | 2018-12-24 | 2019-03-29 | 煤科集团沈阳研究院有限公司 | Rate of temperature change differential technique electrical equipment ageing management system and detection method |
| CN109596886A (en) * | 2018-12-05 | 2019-04-09 | 合肥能安科技有限公司 | A kind of contact resistance on-Line Monitor Device and method |
| CN111502892A (en) * | 2020-04-26 | 2020-08-07 | 华能四川水电有限公司 | Fault early warning method for unevenness of opening of movable guide vane of water turbine |
-
2017
- 2017-09-15 CN CN201721188505.0U patent/CN207423387U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107702804A (en) * | 2017-09-15 | 2018-02-16 | 国网浙江嘉善县供电公司 | A kind of cable intermediate joint temperature rise on-line monitoring system and method based on temperature difference method |
| CN109596886A (en) * | 2018-12-05 | 2019-04-09 | 合肥能安科技有限公司 | A kind of contact resistance on-Line Monitor Device and method |
| CN109541357A (en) * | 2018-12-24 | 2019-03-29 | 煤科集团沈阳研究院有限公司 | Rate of temperature change differential technique electrical equipment ageing management system and detection method |
| CN111502892A (en) * | 2020-04-26 | 2020-08-07 | 华能四川水电有限公司 | Fault early warning method for unevenness of opening of movable guide vane of water turbine |
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Granted publication date: 20180529 Termination date: 20210915 |
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| CF01 | Termination of patent right due to non-payment of annual fee |