CN109060182A - Cable conductor temperature monitoring method and device, Cloud Server and cable conductor temperature monitor system - Google Patents
Cable conductor temperature monitoring method and device, Cloud Server and cable conductor temperature monitor system Download PDFInfo
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- CN109060182A CN109060182A CN201810818269.9A CN201810818269A CN109060182A CN 109060182 A CN109060182 A CN 109060182A CN 201810818269 A CN201810818269 A CN 201810818269A CN 109060182 A CN109060182 A CN 109060182A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
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Abstract
The embodiment of the invention discloses a kind of cable conductor temperature monitoring methods and device, Cloud Server, cable conductor temperature to monitor system.Wherein, cable conductor temperature monitoring method includes the following steps: to receive the real time temperature of insulating layer in the cable that temperature measuring terminals acquire in real time, each sheath and cable surface；Real time temperature based on acquisition, and, the parameter of insulating layer and restrictive coating in pre-stored cable, and, the initial temperature of each layer of cable, determines the real time temperature of cable conductor when pre-set transient state；Parameter includes loss, thermal capacitance and thermal resistance.Parameter of the present invention according to each layer of cable under operation, the real time temperature of the cable conductor of acquisition find the failure in cable operational process in conjunction with prediction and alarm system in time, thus, it reduces and even avoids the economic loss that cable fault further results in.
Description
Technical field
The present invention relates to technical field of electric power more particularly to a kind of cable conductor temperature monitoring method and devices, cloud service
Device, cable conductor temperature monitor system.
Background technique
Cable run is widely used in various power supply systems as a kind of common power equipment.Cable road transport
Whether row state is normal, directly affects the stability of entire power supply system, therefore, the monitoring ten of cable run operating status
Divide important.
Cable run operation and maintenance are handled by manpower, there is maintenance installation personnel shortage and maintenance workloads
The problems such as huge.At the same time, since the temperature of cable conductor can accurately reflect the state of insulation and current-carrying of cable
Amount, therefore, the conductor temperature of cable become the main foundation for judging cable run operating status indirectly.
Currently, cable conductor temperature monitoring method mainly has infrared measurement of temperature, optical fiber cable thermometric, linear cable thermometric etc..
Wherein, infrared measurement of temperature needs staff using instrument to a certain local temperature of in-site measurement cable and analyzes, this
Method measurement cost is higher, wastes a large amount of manpowers, and can not continuous monitoring temperature.Optical fiber cable thermometric is for being laid with
Higher cost for good cable, and can only being measured in the case where tested cable laying is intact, if cable be broken or
Failure can not then continue to monitor.Linear thermometric cable can only the zonal temperature of detection cable, be unable to judge accurately be cable which
A position goes wrong, and needs a large amount of communication cable.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of cable conductor temperature monitoring method and device, Cloud Server, electricity
Cable conductor temperature monitors system, and based on the embodiment of the present invention, cable conductor temperature is supervised in the prior art at least part of solution
The problems of survey.
In a first aspect, the embodiment of the invention provides a kind of cable conductor temperature monitoring method, the cable includes cable
The insulating layer and at least one layer of sheath of conductor, the cladding cable conductor, described method includes following steps:
Insulating layer and each sheath in the cable that temperature measuring terminals acquire in real time are received, and
The real time temperature of cable surface；
The real time temperature based on acquisition, and, the parameter of insulating layer and restrictive coating in the pre-stored cable,
And when pre-stored transient state the cable conductor, the insulating layer and the sheath initial temperature, determine the cable
The real time temperature of conductor；The parameter includes loss, thermal capacitance and thermal resistance.
A kind of specific implementation of cable conductor temperature monitoring device embodiment according to the present invention, the cable conductor
Real time temperature T1(t) it is calculated according to such as drag:
Formula (1)-(5) integrate:
Wherein:
T1It (t) is the real time temperature of cable conductor；
CiFor i-th layer of thermal capacitance of cable；
RiFor i-th layer of thermal resistance of cable；
QiFor i-th layer of loss of cable；
Ti0I-th layer of cable of initial temperature when for transient state；
TbFor the real time temperature of cable surface；
Also, i is the number of plies locating for the insulating layer or the sheath, and the cable conductor is the 1st layer, the insulating layer
It is the 2nd layer, in the sheath, the first sheath is the 3rd layer, and the second sheath is the 4th layer ..., and so on；F is about Ci、Ri、Qi
Function；G is about Ti0Function；δ is about TbFunction.
Second aspect, the embodiment of the invention provides a kind of cable conductor temperature monitoring device, the cable includes cable
Conductor, the insulating layer of the cladding cable conductor and at least one layer of sheath, described device include:
Receiving module, for receiving insulating layer in the cable that temperature measuring terminals acquire in real time and each
The real time temperature of the sheath and cable surface；
Cable conductor temperature computing module, for the real time temperature based on acquisition, and, the pre-stored electricity
The parameter of insulating layer and restrictive coating in cable, and, when pre-stored transient state the cable conductor, the insulating layer and the shield
The initial temperature of set determines the real time temperature of the cable conductor；The parameter includes loss, thermal capacitance and thermal resistance.
A kind of specific implementation of cable conductor temperature monitoring device embodiment according to the present invention, the cable conductor
Real time temperature is calculated according to following formula:
The real time temperature T of the cable conductor1(t) it is calculated according to such as drag:
Formula (1)-(5) integrate:
Wherein:
T1It (t) is the real time temperature of cable conductor；
CiFor i-th layer of thermal capacitance of cable；
RiFor i-th layer of thermal resistance of cable；
QiFor i-th layer of loss of cable；
Ti0I-th layer of cable of initial temperature when for transient state；
TbFor the real time temperature of cable surface；
Also, i is the number of plies locating for the insulating layer or the sheath, and the cable conductor is the 1st layer, the insulating layer
It is the 2nd layer, in the sheath, the first sheath is the 3rd layer, and the second sheath is the 4th layer ..., and so on；F is about Ci、Ri、Qi
Function；G is about Ti0Function；δ is about TbFunction.
The third aspect, the embodiment of the invention provides a kind of Cloud Servers, comprising:
At least one processor；And
The memory being connect at least one described processor communication；Wherein,
The memory is stored with the instruction that can be executed by least one described processor, and described instruction is by described at least one
A processor executes so that at least one described processor be able to carry out aforementioned 1 or 2 described in cable conductor temperature monitoring side
Method.
Fourth aspect, the embodiment of the invention provides a kind of cable conductor temperatures to monitor system, and the cable includes cable
Conductor, the insulating layer of the cladding cable conductor and at least one layer of sheath, the monitoring system include:
Temperature acquisition node, insulating layer in the cable and each sheath and cable for acquiring in real time
The real time temperature on surface, and send；
Cloud Server for receiving the real time temperature, and is based on the real time temperature, and, it is pre-stored described
The parameter of insulating layer and restrictive coating in cable, and, when pre-stored transient state the cable conductor, the insulating layer and described
The initial temperature of sheath determines the real time temperature of the cable conductor and transmission；The parameter includes loss, thermal capacitance and thermal resistance；
User terminal, for receiving and showing the real time temperature of the cable conductor, also, according to the real time temperature,
The operating status for judging cable issues different degrees of warning note in operating status exception.
A kind of specific implementation of cable conductor temperature monitoring system embodiment according to the present invention, the temperature acquisition section
Point includes temperature sensor, radio-frequency module and microprocessor；The radio-frequency module and the temperature sensor with micro- place
Manage device electrical connection；The radio-frequency module is used to the data that temperature sensor acquisition obtains being sent to the Cloud Server.
A kind of specific implementation of cable conductor temperature monitoring system embodiment, the radio-frequency module are according to the present invention
LORA radio-frequency module；The data that temperature sensor acquisition obtains are sent to by the LORA radio-frequency module by LORA gateway
The Cloud Server.
A kind of specific implementation of cable conductor temperature monitoring system embodiment according to the present invention, the Cloud Server
In, it include cable conductor temperature computing module, the cable conductor temperature computing module is used to calculate electricity according to such as drag
The real time temperature T of cable conductor1(t):
Formula (1)-(5) integrate:
Wherein:
T1It (t) is the real time temperature of cable conductor；
CiFor i-th layer of thermal capacitance of cable；
RiFor i-th layer of thermal resistance of cable；
QiFor i-th layer of loss of cable；
Ti0I-th layer of cable of initial temperature when for transient state；
TbFor the real time temperature of cable surface；
Also, i is the number of plies locating for the insulating layer or the sheath, and the cable conductor is the 1st layer, the insulating layer
It is the 2nd layer, in the sheath, the first sheath is the 3rd layer, and the second sheath is the 4th layer ..., and so on；F is about Ci、Ri、Qi
Function；G is about Ti0Function；δ is about TbFunction.
A kind of specific implementation of cable conductor temperature monitoring system embodiment, the restrictive coating include according to the present invention
The aluminium sheath and oversheath of sequence fitting；
It also, further include outermost layer sheath, the outermost layer sheath is external environment, is coated on the oversheath.
On the other hand, the embodiment of the invention also provides a kind of non-transient computer readable storage medium, the non-transient meters
Calculation machine readable storage medium storing program for executing stores computer instruction, and the computer instruction is for making the computer execute aforementioned first aspect or the
Cable conductor temperature monitoring method in any implementation of one side.
On the other hand, the embodiment of the invention also provides a kind of computer program product, which includes
The calculation procedure being stored in non-transient computer readable storage medium, the computer program include program instruction, when the program
When instruction is computer-executed, the computer is made to execute the cable in aforementioned first aspect or any implementation of first aspect
Conductor temperature monitoring method.
Cable conductor temperature monitoring method provided in an embodiment of the present invention and device, Cloud Server, cable conductor temperature prison
Examining system, adopts the connector of real-time monitoring cable by temperature acquisition node, and then obtains the insulating layer in cable and each described
The real time temperature of sheath and cable surface, further combined with the ginseng of insulating layer and restrictive coating in the pre-set cable
The initial temperature of the cable, determines the real time temperature of cable conductor when number (including loss, thermal capacitance and thermal resistance) and transient state.And
And the real time temperature of the cable conductor based on acquisition, in conjunction with prediction and alarm system, so that accomplishing can be according to the operation of cable
Status discovery failure problems reduce and even avoid the economic loss that cable fault further results in.
It is preferential to select LORA communications protocol technology and big data analysis in embodiment provided by the invention, this is because
Other than above-mentioned advantage, the data transmission based on LORA agreement is conducive to set up private network in unauthorized band operation；And
And since transmission rate is lower, be conducive to battery；In addition, signal penetration capacity is strong, be conducive to transmit at a distance with
And improve anti-interference ability.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this field
For those of ordinary skill, without creative efforts, it can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is the topological structure schematic diagram that a kind of cable conductor temperature provided in an embodiment of the present invention monitors system；
Fig. 2 is in a kind of cable conductor temperature monitoring system provided in an embodiment of the present invention, and the thermodynamic model of cable is illustrated
Figure；
Fig. 3 is the structure of temperature acquisition node in a kind of cable conductor temperature monitoring system provided in an embodiment of the present invention
Schematic diagram；
Fig. 4 is the topological structure schematic diagram that another cable conductor temperature provided in an embodiment of the present invention monitors system；
Fig. 5 is in the embodiment cable conductor temperature monitoring system that Fig. 4 of the present invention is provided, and the structure of temperature acquisition node is shown
It is intended to；
Fig. 6 is a kind of step flow chart of cable conductor temperature monitoring method provided in an embodiment of the present invention；
Fig. 7 is a kind of structural block diagram of cable conductor temperature monitoring device provided in an embodiment of the present invention；
Fig. 8 is a kind of structural schematic diagram of Cloud Server provided in an embodiment of the present invention.
Specific embodiment
The embodiment of the present invention is described in detail with reference to the accompanying drawing.Obviously, described embodiment is only this hair
Bright a part of the embodiment, instead of all the embodiments.Below to the description only actually of at least one exemplary embodiment
Be it is illustrative, never as to the present invention and its application or any restrictions used.Based on the embodiments of the present invention, ability
Domain those of ordinary skill every other embodiment obtained without creative efforts belongs to disclosure guarantor
The range of shield.
Fig. 1 is the topological structure schematic diagram that a kind of cable conductor temperature provided in an embodiment of the present invention monitors system.Wherein,
Cable in the present embodiment includes the insulating layer and at least one layer of sheath of cable conductor, the cladding cable conductor.The present embodiment
In cable thermodynamic model referring to shown in Fig. 2.Figure it is seen that the cable in the present embodiment includes 5 layers, it is respectively as follows:
1st layer: cable conductor
2nd layer: insulating layer
3rd layer: aluminium sheath
4th layer: oversheath
5th layer: equivalent external environment layer
It should be noted that the number of plies of above-mentioned cable and each layer material, only one embodiment of the present of invention, this hair
It is bright to this and without limitation, for a person skilled in the art, change the structure of cable, such as the number of plies and material, also exist
Within protection scope of the present invention.
In Fig. 2, the meaning of parameters in thermodynamic model are as follows:
T1(t): the real time temperature of cable conductor；
Ci: the thermal capacitance that i-th layer of cable；
Ri: the thermal resistance that i-th layer of cable；
Qi: the loss that i-th layer of cable.
Also, i is the number of plies locating for insulating layer or sheath, and cable conductor is the 1st layer, and the insulating layer is the 2nd layer, sheath
In, aluminium sheath is the 3rd layer, and oversheath is the 4th layer ..., and so on.
Referring to Fig.1, the present embodiment cable conductor temperature monitoring system includes:
Temperature acquisition node 10, the reality of the insulating layer and each sheath and cable surface in cable for acquiring in real time
Shi Wendu, and send.That is, temperature acquisition node 10 needs to acquire insulating layer, aluminium sheath, oversheath in real time, there are also external
Environment ground real time temperature.Meanwhile cable conductor, insulating layer, aluminium sheath, the thermal capacitance of oversheath, thermal resistance and damage are determined in advance
Consumption.These are stored in following Cloud Server as constant.
Cloud Server 11 for receiving the real time temperature, and is based on the real time temperature, and, pre-stored institute
State the parameter of insulating layer and restrictive coating in cable, and, when pre-stored transient state the cable conductor, the insulating layer and institute
The initial temperature for stating sheath determines the real time temperature of the cable conductor and transmission；The parameter includes loss, thermal capacitance and heat
Resistance.
Herein it should be noted that in the presence of transient state generally refers in circuit if there is inductance, capacitor, power on circuitry or
The state of the moment circuit of power-off.Circuit generate the reason of transient state be due in circuit with the presence of inductance capacitance, capacitor both ends
The characteristics of voltage cannot be mutated, and cannot be mutated by the electric current of inductance, so that needing a process when connecting and disconnecting of the circuit.Transient state
Initial temperature when initial temperature is exactly each layer transient state temperature, referred to as transient state at first in cable, it is calculated in cable
One of factor parameter of portion's real time temperature.From following formula it can also be seen that.
User terminal 12, for receiving and showing the real time temperature of cable conductor, also, according to the real-time temperature of cable conductor
Degree, judges the operating status of cable, in operating status exception, issues different degrees of warning note.
It preferably, is temperature in a kind of cable conductor temperature monitoring system provided in an embodiment of the present invention referring to Fig. 3, Fig. 3
The structural schematic diagram of acquisition node.
In the present embodiment, temperature acquisition node 10 includes sensor for measuring temperature 101, radio-frequency module 103 and microprocessor
102.Radio-frequency module 103 is electrically connected with microprocessor 102 with sensor for measuring temperature 101；Radio-frequency module 103 is used for temperature
The data that the acquisition of measurement sensor 101 obtains are sent to Cloud Server.
Cable conductor temperature provided in this embodiment monitors system, adopts connecing for real-time monitoring cable by temperature acquisition node
Head, and then the real time temperature of the insulating layer and each sheath and cable surface in cable is obtained, further combined with preparatory
The cable when parameter (including loss, thermal capacitance and thermal resistance) and transient state of insulating layer and restrictive coating in the cable being arranged
Initial temperature determines the real time temperature of cable conductor.Also, the real time temperature of the cable conductor based on acquisition, in conjunction with prediction
Alarm system reduces to accomplish to find failure problems according to the operating status of cable and even avoids cable fault into one
Economic loss caused by step.
Fig. 4 is the topological structure schematic diagram that another cable conductor temperature provided in an embodiment of the present invention monitors system.From
Fig. 4 can be seen that the present embodiment cable conductor temperature monitoring system
Temperature acquisition node 40, the reality of the insulating layer and each sheath and cable surface in cable for acquiring in real time
Shi Wendu, and send.That is, temperature acquisition node 10 needs to acquire insulating layer, aluminium sheath, oversheath in real time, there are also external
Environment ground real time temperature.Meanwhile cable conductor, insulating layer, aluminium sheath, the thermal capacitance of oversheath, thermal resistance and damage are determined in advance
Consumption.These are stored in following Cloud Server as constant.
Temperature measuring terminals node mainly realizes that the measurement of cable surface temperature and data upload, and receives real-time measurement temperature
Down order.The structural schematic diagram of another temperature acquisition node, including sensor for measuring temperature are provided referring to Fig. 5, Fig. 5
401, LORA radio-frequency module 403 and LORA microprocessor 402.Radio-frequency module 403 is micro- with LORA with sensor for measuring temperature 401
Processor 402 is electrically connected；Radio-frequency module 403 is used to the data that the acquisition of sensor for measuring temperature 401 obtains being sent to cloud service
Device.
That is, in the present embodiment, the downlink of upload and the order of data is based on LORA communication protocol.It is based on
The data transmission of LORA agreement is conducive to set up private network in unauthorized band operation；Also, since transmission rate is lower,
Be conducive to battery；In addition, signal penetration capacity is strong, be conducive to transmit and improve anti-interference ability at a distance.
It should be pointed out that the communication in the present embodiment is based on LORA agreement, but the present invention is not limited thereto, only because
There are the advantages such as low-power consumption, ad hoc network for the communication based on LORA agreement.Other agreements can also replace, for example, WIFI and bluetooth
Deng.
Preferably, in one embodiment, temperature sensor can be with the TSYS02S series of MEAS company of beauty competition state, LORA
Radio-frequency module can be with the SX1278 series of SEMTECH company of beauty competition state, and it is public that LORA microprocessor 402 can choose German Infineon
XC82x series+STM8S103F2 the series processors of department.
LORA gateway 41 contains Ethernet interface, WIFI module/4G communication module, can be according to on-site actual situations freedom
The communication modes of selection and Cloud Server.
Cloud Server 42 is responsible for that cable temperature information is summarized and handled.Specifically, the exhausted of acquisition acquisition above is received
There are also external rings condition real time temperatures for edge layer, aluminium sheath, oversheath, and are based on real time temperature, and, in pre-set cable
Loss, thermal capacitance and the thermal resistance of insulating layer and restrictive coating, and, the initial temperature of cable, determines cable when pre-set transient state
The real time temperature of conductor simultaneously sends a user terminal.
It include cable conductor temperature computing module, the electricity in Cloud Server 42 in a particularly preferred embodiment
Cable conductor temperature computing module is used to calculate the real time temperature of cable conductor according to following formula:
Wherein:
T1It (t) is the real time temperature of cable conductor；
CiFor i-th layer of thermal capacitance of cable；
RiFor i-th layer of thermal resistance of cable；
QiFor i-th layer of loss of cable；
Ti0I-th layer of cable of initial temperature when for transient state；
TbFor the real time temperature of cable surface；
Also, i is the number of plies locating for the insulating layer or the sheath, and the cable conductor is the 1st layer, the insulating layer
It is the 2nd layer, in the sheath, the first sheath is the 3rd layer, and the second sheath is the 4th layer ..., and so on；F is about Ci、Ri、Qi
Function；G is about Ti0Function；δ is about TbFunction.
And it is above-mentionedFormula is carried out by the thermodynamic model to Fig. 3
Modeling, obtains following equation:
Formula (1)-(5) integrate:
User terminal 43, for receiving and showing the real time temperature of cable conductor, also, according to the real-time temperature of cable conductor
Degree, judges the operating status of cable, in operating status exception, issues different degrees of warning note.Wherein, cable runs shape
State can be divided into: " normal ", " attention ", "abnormal", four kinds of " serious " will sound an alarm under abnormal condition, remind maintenance people
Member's processing in time.Above-mentioned function, which is typically integrated in the APP of user terminal, to be realized.User terminal A PP is led based on the cable of acquisition
The real time temperature of body, to accomplish to find failure problems according to the operating status of cable, subtracts in conjunction with prediction and alarm system
It is few even to avoid the economic loss that cable fault further results in.
The user terminal can exist in a variety of forms, including but not limited to:
(1) mobile communication equipment: the characteristics of this kind of equipment is that have mobile communication function, and to provide speech, data
Communication is main target.This Terminal Type includes: smart phone (such as iPhone), multimedia handset, functional mobile phone and low
Hold mobile phone etc..
(2) super mobile personal computer equipment: this kind of equipment belongs to the scope of personal computer, there is calculating and processing function
Can, generally also have mobile Internet access characteristic.This Terminal Type includes: PDA, MID and UMPC equipment etc., such as iPad.
(3) portable entertainment device: this kind of equipment can show and play multimedia content.Such equipment include: audio,
Video player (such as iPod), handheld device, e-book and intelligent toy and portable car-mounted navigation equipment.
(4) server: it can be for that can provide the equipment of the service of calculating, the composition of Cloud Server includes processor, hard disk, interior
It deposits, system bus etc., server is similar with general computer architecture, but due to needing to provide highly reliable service,
Processing capacity, stability, reliability, safety, scalability, in terms of it is more demanding.
(5) other electronic equipments with data interaction function.
It should be noted that from the foregoing, it will be seen that temperature acquisition node carries out adopting for the temperature of cable different layers
Collection, also, according to parameter, the relationship of real time temperature of the temperature of cable conductor and other each layers, determine the fortune of its specific value
Calculation all can be feasible in the microprocessor, Cloud Server and user terminal of temperature acquisition node.But it is preferential to select this
Operation is placed on Cloud Server, completes data using the powerful computing capability of Cloud Server and analyzes.
It is a kind of step flow chart of cable conductor temperature monitoring method provided in an embodiment of the present invention referring to Fig. 6, Fig. 6,
As described above, cable includes the insulating layer and at least one layer of sheath of cable conductor, the cladding cable conductor, the side of the embodiment
Method includes the following steps:
The parameter of insulating layer and restrictive coating in cable is stored in advance in step S61, and, when transient state is stored in advance in cable
The initial temperature of each layer；The parameter of insulating layer and restrictive coating includes loss, thermal capacitance and thermal resistance.
Herein it should be noted that in the presence of transient state generally refers in circuit if there is inductance, capacitor, power on circuitry or
The state of the moment circuit of power-off.Circuit generate the reason of transient state be due in circuit with the presence of inductance capacitance, capacitor both ends
The characteristics of voltage cannot be mutated, and cannot be mutated by the electric current of inductance, so that needing a process when connecting and disconnecting of the circuit.Transient state
Initial temperature when initial temperature is exactly each layer transient state temperature, referred to as transient state at first in cable, it is calculated in cable
One of factor parameter of portion's real time temperature.From following formula it can also be seen that.
Step S62 receives insulating layer in the cable that temperature measuring terminals acquire in real time and each described
The real time temperature of sheath and cable surface；
Step S63, the real time temperature based on acquisition, and, insulating layer and restrictive coating in the pre-stored cable
Parameter, and, the initial temperature of each layer of cable, determines the real time temperature of cable conductor when pre-stored transient state.
As above, it is further preferred that the real time temperature of cable conductor can be calculated according to following formula:
Wherein:
T1It (t) is the real time temperature of cable conductor；
CiFor i-th layer of thermal capacitance of cable；
RiFor i-th layer of thermal resistance of cable；
QiFor i-th layer of loss of cable；
Ti0I-th layer of cable of initial temperature when for transient state；
TbFor the real time temperature of cable surface；
Also, i is the number of plies locating for insulating layer or sheath, and cable conductor is the 1st layer, and insulating layer is the 2nd layer, in sheath,
First sheath is the 3rd layer, and the second sheath is the 4th layer ..., and so on；F is about Ci、Ri、QiFunction；G is about Ti0's
Function；δ is about TbFunction.
It is a kind of structural block diagram of cable conductor temperature monitoring device provided in an embodiment of the present invention, electricity referring to Fig. 7, Fig. 7
Cable includes the insulating layer and at least one layer of sheath of cable conductor, the cladding cable conductor, cable conductor temperature monitoring device packet
It includes:
Preset module 70, for the parameter of insulating layer and restrictive coating in pre-stored cable, and, it is pre-stored temporary
The initial temperature of each layer of cable when state；The parameter of insulating layer and restrictive coating includes loss, thermal capacitance and thermal resistance.
Receiving module 72, for receiving insulating layer in the cable that temperature measuring terminals acquire in real time and every
The real time temperature of one sheath and cable surface；
Cable conductor temperature computing module 74, for the real time temperature based on acquisition, and, the pre-set cable
The parameter of middle insulating layer and restrictive coating, and, when pre-set transient state the cable initial temperature, determine cable conductor
Real time temperature.
The present embodiment working principle explained in detail above, details are not described herein.Related place reference
Preceding description.
Cable conductor temperature monitoring method provided in an embodiment of the present invention and device adopt real-time prison by temperature acquisition node
The connector of cable is surveyed, and then obtains the real time temperature of the insulating layer and each sheath and cable surface in cable, into one
When step is in conjunction with the parameter (including loss, thermal capacitance and thermal resistance) and transient state of insulating layer in the pre-set cable and restrictive coating
The initial temperature of the cable determines the real time temperature of cable conductor.Also, the real time temperature of the cable conductor based on acquisition,
In conjunction with prediction and alarm system, to accomplish to find failure problems according to the operating status of cable, reduces and even avoid electricity
The economic loss that cable failure further results in.
Fig. 8 shows the structural schematic diagram of Cloud Server provided in an embodiment of the present invention, and Cloud Server includes at least one
Processor 8001 (such as CPU), at least one input/output interface 8004, memory 8002 and at least one communication bus
8003, for realizing the connection communication between these components.At least one processor 8001 is deposited in memory 8002 for executing
The computer instruction of storage, so that at least one described processor 8001 is able to carry out the embodiment of aforementioned any point of table method.It deposits
Reservoir 8002 is non-transient memory (non-transitory memory), may include volatile memory, such as high speed
Random access memory (RAM:Random Access Memory), also may include nonvolatile memory (non-
Volatile memory), a for example, at least magnetic disk storage.It (can be by least one input/output interface 8004
Line or wireless communication interface) realize and the communication connection between at least one other equipment or unit.
In some embodiments, memory 8002 stores program 80021, and processor 8001 executes program 80021, uses
Content in the aforementioned either cable conductor temperature monitoring method embodiment of execution.
The Cloud Server can be for that can provide the equipment of the service of calculating, and the composition of Cloud Server includes processor, hard disk, interior
It deposits, system bus etc., server is similar with general computer architecture, but due to needing to provide highly reliable service,
Processing capacity, stability, reliability, safety, scalability, in terms of it is more demanding.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or equipment for including a series of elements not only includes those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or equipment institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including institute
State in the process, method, article or equipment of element that there is also other identical elements.
Each embodiment in this specification is all made of relevant mode and describes, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.
For Installation practice, since it is substantially similar to the method embodiment, so the comparison of description is simple
Single, the relevent part can refer to the partial explaination of embodiments of method.
Expression or logic and/or step described otherwise above herein in flow charts, for example, being considered use
In the order list for the executable instruction for realizing logic function, may be embodied in any computer-readable medium, for
Instruction execution system, device or equipment (such as computer based system, including the system of processor or other can be held from instruction
The instruction fetch of row system, device or equipment and the system executed instruction) it uses, or combine these instruction execution systems, device or set
It is standby and use.For the purpose of this specification, " computer-readable medium ", which can be, any may include, stores, communicates, propagates or pass
Defeated program is for instruction execution system, device or equipment or the dress used in conjunction with these instruction execution systems, device or equipment
It sets.The more specific example (non-exhaustive list) of computer-readable medium include the following: there is the electricity of one or more wirings
Interconnecting piece (electronic device), portable computer diskette box (magnetic device), random access memory (RAM), read-only memory
(ROM), erasable edit read-only storage (EPROM or flash memory), fiber device and portable optic disk is read-only deposits
Reservoir (CDROM).In addition, computer-readable medium can even is that the paper that can print described program on it or other are suitable
Medium, because can then be edited, be interpreted or when necessary with it for example by carrying out optical scanner to paper or other media
His suitable method is handled electronically to obtain described program, is then stored in computer storage.
It should be appreciated that each section of the invention can be realized with hardware, software, firmware or their combination.
In the above-described embodiment, multiple steps or method can be with storages in memory and by suitable instruction execution
The software or firmware that system executes are realized.For example, in another embodiment, can be used if realized with hardware
Any one of following technology well known in the art or their combination are realized: being had for realizing logic function to data-signal
The discrete logic of the logic gates of energy, the specific integrated circuit with suitable combinational logic gate circuit, programmable gate
Array (PGA), field programmable gate array (FPGA) etc..
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by those familiar with the art, all answers
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (10)
1. a kind of cable conductor temperature monitoring method, the cable includes the insulating layer of cable conductor, the cladding cable conductor
With at least one layer of sheath, which is characterized in that described method includes following steps:
Receive insulating layer, each sheath and cable surface in the cable that temperature measuring terminals acquire in real time
Real time temperature；
The real time temperature based on acquisition, and, the parameter of insulating layer and restrictive coating in the pre-stored cable, with
And when pre-stored transient state the cable conductor, the insulating layer and the sheath initial temperature, determine that the cable is led
The real time temperature of body；The parameter includes loss, thermal capacitance and thermal resistance.
2. cable conductor temperature monitoring method according to claim 1, which is characterized in that
The real time temperature T of the cable conductor1(t) it is calculated according to such as drag:
Formula (1)-(5) integrate:
Wherein:
T1It (t) is the real time temperature of cable conductor；
CiFor i-th layer of thermal capacitance of cable；
RiFor i-th layer of thermal resistance of cable；
QiFor i-th layer of loss of cable；
Ti0I-th layer of cable of initial temperature when for transient state；
TbFor the real time temperature of cable surface；
Also, i is the number of plies locating for the insulating layer or the sheath, and the cable conductor is the 1st layer, and the insulating layer is the
2 layers, in the sheath, the first sheath is the 3rd layer, and the second sheath is the 4th layer ..., and so on；F is about Ci、Ri、QiLetter
Number；G is about Ti0Function；δ is about TbFunction.
3. a kind of cable conductor temperature monitoring device, the cable includes the insulating layer of cable conductor, the cladding cable conductor
With at least one layer of sheath, which is characterized in that described device includes:
Receiving module, for receiving the insulating layer in the cable that temperature measuring terminals acquire in real time, each shield
The real time temperature of set and cable surface；
Cable conductor temperature computing module, for the real time temperature based on acquisition, and, in the pre-stored cable
The parameter of insulating layer and restrictive coating, and, when pre-stored transient state the cable conductor, the insulating layer and the sheath
Initial temperature determines the real time temperature of the cable conductor；The parameter includes loss, thermal capacitance and thermal resistance.
4. cable conductor temperature monitoring device according to claim 1, which is characterized in that
The real time temperature T of the cable conductor1(t) it is calculated according to such as drag:
Formula (1)-(5) integrate:
Wherein:
T1It (t) is the real time temperature of cable conductor；
CiFor i-th layer of thermal capacitance of cable；
RiFor i-th layer of thermal resistance of cable；
QiFor i-th layer of loss of cable；
Ti0I-th layer of cable of initial temperature when for transient state；
TbFor the real time temperature of cable surface；
Also, i is the number of plies locating for the insulating layer or the sheath, and the cable conductor is the 1st layer, and the insulating layer is the
2 layers, in the sheath, the first sheath is the 3rd layer, and the second sheath is the 4th layer ..., and so on；F is about Ci、Ri、QiLetter
Number；G is about Ti0Function；δ is about TbFunction.
5. a kind of Cloud Server characterized by comprising
At least one processor；And
The memory being connect at least one described processor communication；Wherein,
The memory is stored with the instruction that can be executed by least one described processor, and described instruction is by described at least one
Manage device execute so that at least one described processor be able to carry out aforementioned 1 or 2 described in cable conductor temperature monitoring method.
6. a kind of cable conductor temperature monitors system, which is characterized in that the cable includes that cable conductor, the cladding cable are led
The insulating layer of body and at least one layer of sheath, the monitoring system include:
Temperature acquisition node, insulating layer in the cable and each sheath and cable surface for acquiring in real time
Real time temperature, and send；
Cloud Server for receiving the real time temperature, and is based on the real time temperature, and, the pre-stored cable
The parameter of middle insulating layer and restrictive coating, and, when pre-stored transient state the cable conductor, the insulating layer and the sheath
Initial temperature, determine the real time temperature of the cable conductor and transmission；The parameter includes loss, thermal capacitance and thermal resistance；
User terminal, for receiving and showing the real time temperature of the cable conductor, also, according to the real time temperature, judgement
The operating status of cable issues different degrees of warning note in operating status exception.
7. cable conductor temperature according to claim 6 monitors system, which is characterized in that
The temperature acquisition node includes temperature sensor, radio-frequency module and microprocessor；
The radio-frequency module is electrically connected with the microprocessor with the temperature sensor；
The radio-frequency module is used to the data that temperature sensor acquisition obtains being sent to the Cloud Server.
8. cable conductor temperature according to claim 7 monitors system, which is characterized in that
The radio-frequency module is LORA radio-frequency module；
The data that temperature sensor acquisition obtains are sent to the cloud by LORA gateway and taken by the LORA radio-frequency module
Business device.
9. cable conductor temperature according to claim 8 monitors system, which is characterized in that
Include cable conductor temperature computing module in the Cloud Server, the cable conductor temperature computing module be used for according to
The real time temperature T of cable conductor is calculated according to such as drag1(t):
Formula (1)-(5) integrate:
Wherein:
T1It (t) is the real time temperature of cable conductor；
CiFor i-th layer of thermal capacitance of cable；
RiFor i-th layer of thermal resistance of cable；
QiFor i-th layer of loss of cable；
Ti0I-th layer of cable of initial temperature when for transient state；
TbFor the real time temperature of cable surface；
Also, i is the number of plies locating for the insulating layer or the sheath, and the cable conductor is the 1st layer, and the insulating layer is the
2 layers, in the sheath, the first sheath is the 3rd layer, and the second sheath is the 4th layer ..., and so on；F is about Ci、Ri、QiLetter
Number；G is about Ti0Function；δ is about TbFunction.
10. cable conductor temperature according to claim 9 monitors system, which is characterized in that
The restrictive coating includes the aluminium sheath and oversheath of sequence fitting；
It also, further include outermost layer sheath, the outermost layer sheath is external environment, is coated on the oversheath.
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| JPH09135508A (en) * | 1995-11-07 | 1997-05-20 | Chubu Electric Power Co Inc | Method and apparatus for inspecting gas-insulated current-conduction part |
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| CN107818239A (en) * | 2017-10-26 | 2018-03-20 | 广州供电局有限公司 | High-tension cable conductor temperature Forecasting Methodology and system |
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| JPH09135508A (en) * | 1995-11-07 | 1997-05-20 | Chubu Electric Power Co Inc | Method and apparatus for inspecting gas-insulated current-conduction part |
| CN102323496A (en) * | 2011-05-31 | 2012-01-18 | 广东电网公司广州供电局 | System for monitoring current-carrying capacity of cable conductor and method |
| CN107818239A (en) * | 2017-10-26 | 2018-03-20 | 广州供电局有限公司 | High-tension cable conductor temperature Forecasting Methodology and system |
| CN107886692A (en) * | 2017-10-30 | 2018-04-06 | 皖西学院 | A kind of bioengineering sensor LoRa wireless network communication systems |
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