CN109000823A - The conductor temperature measurement method and system of cold contract cable middle joint - Google Patents
The conductor temperature measurement method and system of cold contract cable middle joint Download PDFInfo
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- CN109000823A CN109000823A CN201710423113.6A CN201710423113A CN109000823A CN 109000823 A CN109000823 A CN 109000823A CN 201710423113 A CN201710423113 A CN 201710423113A CN 109000823 A CN109000823 A CN 109000823A
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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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- Manufacturing Of Electrical Connectors (AREA)
Abstract
The invention discloses the conductor temperature measurement method and system of a kind of cold contract cable middle joint, the conductor temperature measurement method include: S1, obtain cold contract cable middle joint prefabricated component surface temperature value；S2, the current value for obtaining cable conductor；S3, the conductor temperature value that cold contract cable middle joint is obtained according to the surface temperature value and the current value.The present invention passes through the preform surfaces temperature of measurement cold contract cable middle joint and the electric current of cable conductor, the conductor temperature of cold contract cable middle joint is extrapolated using support vector regression prediction model, realize the real-time measurement of the conductor temperature of cold contract cable middle joint, positive effect not only is played to timely discovery temperature faults, a large amount of man power and material can also be reduced, is had great importance to guarantee electric power safety operation.
Description
Technical field
The invention belongs to field of electrical equipment more particularly to a kind of conductor temperature measurement methods of cold contract cable middle joint
And system.
Background technique
Currently, the mode of power cable power transmission and distribution is widely used to city transmission & distribution electrical domain, as caused by power cable
Failure is to influence the principal element of electric power regular supply, since in electric power longtime running supply process, cable can generate very high
Temperature, with the increase of cable temperature, the probability that cable breaks down can also be increased rapidly, and lot of accident investigation shows electric power
The position that cable breaks down all is in most cases at cable connector, and temperature faults occurs in cable connector in order to prevent,
Main at present to carry out inspection by the way of artificial infrared periodic scanning, such mode can only measure cable connector prefabricated component
Surface temperature, rather than the conductor temperature of transition joint, real-time is poor, accuracy bottom, and time-consuming and laborious.
Summary of the invention
The technical problem to be solved by the present invention is in order to overcome in the prior art without very effective power cable connector
Conductor temperature measurement method defect, the conductor temperature measurement method and system of a kind of cold contract cable middle joint are provided.
The present invention is to solve above-mentioned technical problem by the following technical programs:
A kind of conductor temperature measurement method of cold contract cable middle joint, comprising:
S1, obtain cold contract cable middle joint prefabricated component surface temperature value；
S2, the current value for obtaining cable conductor；
S3, the conductor temperature value that cold contract cable middle joint is obtained according to the surface temperature value and the current value.
In the present solution, passing through the surface temperature value and cable conductor for obtaining the prefabricated component of cold contract cable middle joint in real time
Current value calculates the conductor temperature value of cold contract cable middle joint indirectly, grasps conductor temperature in real time, finds shrinkage electricity in time
The variation of cable transition joint quality ensures electric power safety.
Preferably, step S3 includes:
S301, the throughput time for obtaining cable；
S302, using support vector regression prediction model, according to the surface temperature value, the current value and described through-flow
Time obtains the conductor temperature value of cold contract cable middle joint.
In the present solution, the input quantity of support vector regression prediction model be cold contract cable middle joint conductor temperature value,
The current value of cable conductor and the throughput time of cable, the output quantity of support vector regression prediction model are indirect in shrinkage cable
The conductor temperature value of head.
Preferably, the throughput time be keep the current value fluctuation range between -10%~10% it is lasting when
Between, or, the throughput time is the duration that the current value remains unchanged.
Preferably, in step S1:
Temperature sensor is set by the surface of the prefabricated component in cold contract cable middle joint to obtain among shrinkage cable
The surface temperature value of the prefabricated component of connector.
Preferably, in step S2:
The current value of cable conductor is obtained by the way that straight-through current transformer is arranged on cable terminal.
A kind of conductor temperature measuring system of cold contract cable middle joint, including temperature-measuring module, current measurement module,
Wireless transmitter module, wireless receiving module and data analysis module；
The surface of the prefabricated component of cold contract cable middle joint is arranged in the temperature-measuring module, for obtaining shrinkage cable
The surface temperature value of the prefabricated component of transition joint；
The current measurement module is used to obtain the current value of cable conductor；
The wireless transmitter module be it is multiple, be electrically connected respectively with the temperature-measuring module and the current measurement module
It connects, for the surface temperature value and the current value to be sent to the wireless receiving module；
The wireless receiving module is arranged on distribution power automation terminal, for receiving the surface temperature value and the electricity
Flow valuve, and it is sent to the data analysis module；
The data analysis module is arranged on distribution power automation terminal, for according to the surface temperature value and the electricity
Flow valuve obtains the conductor temperature value of cold contract cable middle joint.
In the present solution, temperature-measuring module can be arranged in important one or more shrinkage cables indirectly on demand
On head, only a current measurement module need to be set on every cable, each temperature-measuring module and current measurement module are equipped with
One wireless transmitter module, the surface temperature value and current value that will acquire in real time are sent to distribution by way of wireless telecommunications
Wireless receiving module on automatization terminal re-sends to data analysis module and is handled, obtains cold contract cable middle joint
Conductor temperature value.
Preferably, the conductor temperature measuring system further includes timing module；
The timing module is used to obtain the throughput time of cable and is sent to the data analysis module；
The data analysis module is used to utilize support vector regression prediction model, according to the surface temperature value, described
Current value and the throughput time obtain the conductor temperature value of cold contract cable middle joint.
Preferably, the throughput time be keep the current value fluctuation range between -10%~10% it is lasting when
Between, or, the throughput time is the duration that the current value remains unchanged.
Preferably, the current measurement module is arranged on cable terminal.
Preferably, the temperature-measuring module includes temperature sensor, the current measurement module includes centre path current
Mutual inductor.
In the present solution, every cable, there are two terminals, current measurement module is arranged on any one terminals.
The positive effect of the present invention is that: the preform surfaces temperature that the present invention passes through measurement cold contract cable middle joint
The electric current of degree and cable conductor, the conductor temperature of cold contract cable middle joint is extrapolated using support vector regression prediction model,
It realizes the real-time measurement of the conductor temperature of cold contract cable middle joint, positive effect not only is played to timely discovery temperature faults,
A large amount of man power and material can also be reduced, is had great importance to guarantee electric power safety operation.
Detailed description of the invention
Fig. 1 is the flow chart of the conductor temperature measurement method of the cold contract cable middle joint of present pre-ferred embodiments.
Fig. 2 is the structural block diagram of the conductor temperature measuring system of the cold contract cable middle joint of present pre-ferred embodiments.
Specific embodiment
The present invention is further illustrated below by the mode of embodiment, but does not therefore limit the present invention to the reality
It applies among a range.
A kind of conductor temperature measurement method of cold contract cable middle joint, it is specific as shown in Figure 1, comprising:
Step 101, obtain cold contract cable middle joint prefabricated component surface temperature value.By indirect in shrinkage cable
Temperature sensor is arranged to obtain the surface temperature value in the surface of the prefabricated component of head.
Step 102, the current value for obtaining cable conductor.By on cable terminal be arranged straight-through current transformer come
Obtain the current value.
Step 103, the throughput time for obtaining cable.The throughput time be keep the current value fluctuation range-
The duration that duration or the current value between 10%~10% remain unchanged.
Step 104, using support vector regression prediction model, according to the surface temperature value, the current value and described
Throughput time obtains the conductor temperature value of cold contract cable middle joint.The input quantity of support vector regression prediction model is shrinkage
Conductor temperature value, the current value of cable conductor and the throughput time of cable of cable intermediate joint, support vector regression predict mould
The output quantity of type is the conductor temperature value of cold contract cable middle joint.
Support vector regression prediction model in step 104 is established by the following method: being surveyed according to associated item to producer
Amount data are normalized, and determine training sample set；It is supported the selection and parameter setting of vector regression kernel function, is adopted
Use radial basis function as kernel function, core wide parameter δ and penalty coefficient C select gridding method parameter optimization and ten foldings intersection to test
Card；By in selected input and output training sample typing support vector machines, training generates support vector regression prediction model；It utilizes
Support vector regression prediction model, predicts test sample, provides prediction gained transition joint conductor temperature value；Compare pre-
Whether measured value and actual value, verifying gained prediction data reach precision index requirement.
The conductor temperature measuring system of the cold contract cable middle joint of the present embodiment is specific as shown in Fig. 2, including that temperature is surveyed
Measure module 1, current measurement module 2, wireless transmitter module 3, wireless receiving module 4 and data analysis module 5；
The surface of the prefabricated component of cold contract cable middle joint is arranged in the temperature-measuring module 1, and setting is being compared on demand
On important one or more cold contract cable middle joints, the surface temperature of the prefabricated component for obtaining cold contract cable middle joint
Value, the temperature-measuring module 1 include temperature sensor；
The current measurement module 2 is used to obtain the current value of cable conductor, and there are two terminals, electric currents to survey for every cable
It measures module 2 to be arranged on any one terminals, current measurement module 2 includes straight-through current transformer；
The wireless transmitter module 3 be it is multiple, each temperature-measuring module 1 and current measurement module 2 are equipped with a nothing
Line transmitting module 3 is electrically connected with the temperature-measuring module 1 and the current measurement module 2 respectively, is used for the surface temperature
Angle value and the current value are sent to the wireless receiving module 4；
The wireless receiving module 4 is arranged on distribution power automation terminal, for receiving the surface temperature value and described
Current value, and it is sent to the data analysis module 5；
The data analysis module 5 is arranged on distribution power automation terminal, for according to the surface temperature value and described
Current value obtains the conductor temperature value of cold contract cable middle joint.
The conductor temperature measuring system further includes timing module 6；
The timing module 6 is used to obtain the throughput time of cable and is sent to the data analysis module 5, described through-flow
Time is to remain unchanged the duration or the current value for keeping the current value fluctuation range between -10%~10%
Duration.
The data analysis module 5 is used to utilize support vector regression prediction model, according to the surface temperature value, described
Current value and the throughput time obtain the conductor temperature value of cold contract cable middle joint.
Although specific embodiments of the present invention have been described above, it will be appreciated by those of skill in the art that these
It is merely illustrative of, protection scope of the present invention is defined by the appended claims.Those skilled in the art is not carrying on the back
Under the premise of from the principle and substance of the present invention, many changes and modifications may be made, but these are changed
Protection scope of the present invention is each fallen with modification.
Claims (10)
1. a kind of conductor temperature measurement method of cold contract cable middle joint, which is characterized in that the conductor temperature measurement method
Include:
S1, obtain cold contract cable middle joint prefabricated component surface temperature value；
S2, the current value for obtaining cable conductor；
S3, the conductor temperature value that cold contract cable middle joint is obtained according to the surface temperature value and the current value.
2. conductor temperature measurement method as described in claim 1, which is characterized in that step S3 includes:
S301, the throughput time for obtaining cable；
S302, using support vector regression prediction model, according to the surface temperature value, the current value and the throughput time
Obtain the conductor temperature value of cold contract cable middle joint.
3. conductor temperature measurement method as claimed in claim 2, which is characterized in that the throughput time is to keep the electric current
It is worth duration of the fluctuation range between -10%~10%, or, the throughput time is held for what the current value remained unchanged
The continuous time.
4. conductor temperature measurement method as described in claim 1, which is characterized in that in step S1:
Temperature sensor is set by the surface of the prefabricated component in cold contract cable middle joint to obtain cold contract cable middle joint
Prefabricated component surface temperature value.
5. conductor temperature measurement method as described in claim 1, which is characterized in that in step S2:
The current value of cable conductor is obtained by the way that straight-through current transformer is arranged on cable terminal.
6. a kind of conductor temperature measuring system of cold contract cable middle joint, which is characterized in that the conductor temperature measuring system
Including temperature-measuring module, current measurement module, wireless transmitter module, wireless receiving module and data analysis module；
The surface of the prefabricated component of cold contract cable middle joint is arranged in the temperature-measuring module, for obtaining among shrinkage cable
The surface temperature value of the prefabricated component of connector；
The current measurement module is used to obtain the current value of cable conductor；
The wireless transmitter module be it is multiple, be electrically connected respectively with the temperature-measuring module and the current measurement module, use
In the surface temperature value and the current value are sent to the wireless receiving module；
The wireless receiving module is arranged on distribution power automation terminal, for receiving the surface temperature value and the electric current
Value, and it is sent to the data analysis module；
The data analysis module is arranged on distribution power automation terminal, for according to the surface temperature value and the current value
Obtain the conductor temperature value of cold contract cable middle joint.
7. conductor temperature measuring system as claimed in claim 6, which is characterized in that the conductor temperature measuring system further includes
Timing module；
The timing module is used to obtain the throughput time of cable and is sent to the data analysis module；
The data analysis module is used to utilize support vector regression prediction model, according to the surface temperature value, the electric current
Value and the throughput time, obtain the conductor temperature value of cold contract cable middle joint.
8. conductor temperature measuring system as claimed in claim 7, which is characterized in that the throughput time is to keep the electric current
It is worth duration of the fluctuation range between -10%~10%, or, the throughput time is held for what the current value remained unchanged
The continuous time.
9. conductor temperature measuring system as claimed in claim 6, which is characterized in that the current measurement module is arranged in cable
On terminals.
10. conductor temperature measuring system as claimed in claim 6, which is characterized in that the temperature-measuring module includes temperature
Sensor, the current measurement module include straight-through current transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710423113.6A CN109000823A (en) | 2017-06-07 | 2017-06-07 | The conductor temperature measurement method and system of cold contract cable middle joint |
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| CN201710423113.6A CN109000823A (en) | 2017-06-07 | 2017-06-07 | The conductor temperature measurement method and system of cold contract cable middle joint |
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| CN109000823A true CN109000823A (en) | 2018-12-14 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111460639A (en) * | 2020-03-24 | 2020-07-28 | 武汉三江中电科技有限责任公司 | Method and device for dynamically calculating temperature of cable conductor, electronic equipment and storage medium |
| CN111722155A (en) * | 2020-06-28 | 2020-09-29 | 上海感拓智能科技有限公司 | Cable joint fault monitoring system and monitoring method |
| CN114046903A (en) * | 2021-11-05 | 2022-02-15 | 上海海能信息科技股份有限公司 | Real-time temperature prediction method and system for high-voltage cable core |
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| CN111460639A (en) * | 2020-03-24 | 2020-07-28 | 武汉三江中电科技有限责任公司 | Method and device for dynamically calculating temperature of cable conductor, electronic equipment and storage medium |
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| CN111722155A (en) * | 2020-06-28 | 2020-09-29 | 上海感拓智能科技有限公司 | Cable joint fault monitoring system and monitoring method |
| CN114046903A (en) * | 2021-11-05 | 2022-02-15 | 上海海能信息科技股份有限公司 | Real-time temperature prediction method and system for high-voltage cable core |
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