CN208420209U - A kind of temperature measurement expert system - Google Patents
A kind of temperature measurement expert system Download PDFInfo
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- CN208420209U CN208420209U CN201821302440.2U CN201821302440U CN208420209U CN 208420209 U CN208420209 U CN 208420209U CN 201821302440 U CN201821302440 U CN 201821302440U CN 208420209 U CN208420209 U CN 208420209U
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- 238000009529 body temperature measurement Methods 0.000 title abstract description 10
- 238000009434 installation Methods 0.000 claims abstract description 39
- 238000012545 processing Methods 0.000 claims abstract description 24
- 238000004891 communication Methods 0.000 claims abstract description 15
- 238000012544 monitoring process Methods 0.000 claims abstract description 11
- 238000009413 insulation Methods 0.000 claims description 18
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 238000005259 measurement Methods 0.000 claims description 5
- 239000003990 capacitor Substances 0.000 claims description 4
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- 238000005538 encapsulation Methods 0.000 claims 1
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- 206010037660 Pyrexia Diseases 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
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- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
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- 238000004364 calculation method Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
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- 239000004744 fabric Substances 0.000 description 1
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Abstract
The utility model provides a kind of temperature measurement expert system, comprising: field unit sticks on high voltage installation, for acquiring the temperature of high voltage installation；Temperature data processing system is communicated to connect with the field unit, for handling the real time temperature data of each field unit acquisition, forms database；And the coding of built-in each field unit, the GPS coordinate information of corresponding sticked high voltage installation and infield；When monitoring temperature change more than predetermined threshold, warning information is sent；Client, it is connect with the Temperature Treatment system communication, the warning information sent for receiving the temperature data processing system, and the coding of the field unit to break down from temperature data processing system reading, know the GPS coordinate information of sticked high voltage installation and infield.The utility model is suitable for 10 kilovolts and the above underground cable joint, switchgear, the temperature monitoring of the power equipments such as GIS stacked switch, high voltage bus.
Description
Technical field
The utility model relates to technical field of power systems more particularly to a kind of temperature to measure expert system.
Background technique
In various power equipment operational monitorings, temperature measurement has become indispensable means, it can be with effecting reaction equipment
State of insulation, whether operating condition normal etc..Currently, measuring temperature under common high voltage environment generallys use infrared (purple
The methods of optics thermometric outside), is limited in that, one side instrument cost is high, it is difficult to a large amount of deployment, it is difficult to accomplish more for a long time
The continuous monitoring of point；On the other hand, for buried cable, switchgear, the equipment such as GIS stacked switch, high voltage bus are in high electricity
, there is insulation distance requirement in pressure ring border, and equipment itself or locating space structure are complicated, it is difficult to directly observe.
Utility model content
Technical problem to be solved by the utility model is to provide a kind of temperature measurements suitable under high voltage environment
Expert system.
In order to solve the above-mentioned technical problem, the utility model provides a kind of temperature measurement expert system, comprising:
Field unit sticks on tested high voltage installation, for acquiring the temperature of tested high voltage installation；
Temperature data processing system is communicated to connect with the field unit, for handling the real-time of each field unit acquisition
Temperature data forms database；And the coding of built-in each field unit, it is corresponding to stick tested high voltage installation and installation ground
The GPS coordinate information of point；When monitoring temperature change more than predetermined threshold, warning information is sent；
Client is connect with the Temperature Treatment system communication, for receiving the temperature data processing system transmission
Warning information, and the coding of the field unit to break down from temperature data processing system reading, know sticked tested
The GPS coordinate information of high voltage installation and infield.
Wherein, the field unit specifically includes:
Temperature sensor, for acquiring the temperature of high voltage installation；
Analog-to-digital conversion module, the analog temperature signal for acquiring the temperature sensor are converted to digital temperature letter
Number；
Communication module, the digital temperature signal for exporting the analog-to-digital conversion module are sent at the temperature data
Reason system.
Wherein, the temperature sensor specifically includes:
Clocked flip-flop and the thermistor Rt being connected on the clocked flip-flop and calculating resistance R1, the temperature-sensitive
The both ends resistance Rt are connected to the first input port and the second input port of the clocked flip-flop, the calculating resistance R1
One end is connected to the first input port of the clocked flip-flop, and the other end is connected to the voltage input end of the clocked flip-flop
Mouthful, the second input port of the clocked flip-flop is grounded by capacitor C.
Wherein, the clocked flip-flop is used to export periodic high level pulse signal and low level pulse signal,
In, the cycle T 1=R1Cln2 of high level pulse signal, the cycle T 2=RtCln2 of low level pulse signal.
Wherein, the analog-to-digital conversion module is also used to receive the high level pulse signal and low level pulse signal, and
The cycle T 1 of the high level pulse and the cycle T 2 of the low level pulse are counted by counting clock, obtain T1,
Two count values of T2.
Wherein, the temperature data processing system be used for the count value according to the cycle T 1 of the high level pulse signal,
The count value of the cycle T 2 of low level pulse signal and the computing the resistor value for calculating resistance R1 go out the heat at a temperature of corresponding measurement
The resistance value of quick resistance Rt calculates the temperature value of tested high voltage installation further according to thermistor Rt and temperature curve.
Wherein, the temperature data processing system is stored with the parameter and typical temperature profile of tested high voltage installation, when
Difference between the temperature value of calculated tested high voltage installation and temperature value corresponding on typical temperature profile is more than predetermined
When threshold value, warning information is sent.
Wherein, the cycle T 1 of the high level pulse signal and the cycle T 2 of the low level pulse signal meet T1+T2
≥50ms。
Wherein, the cycle T 1 of the high level pulse signal is 50ms, and the cycle T 2 of the low level pulse signal takes
Value range is 0~50ms.
Wherein, the field unit is encapsulated using all insulation waterproof cover, and the thermistor Rt is from all insulation waterproof
Shell is drawn, and is pasted on tested high voltage installation surface, all insulation waterproof cover is mounted on adjacent with the thermistor Rt
On position.
The beneficial effect of the utility model embodiment is: be suitable for 10 kilovolts and the above underground cable joint, switchgear,
The temperature monitoring of the power equipments such as GIS stacked switch, high voltage bus, these high voltage installations are in high voltage environment, have absolutely
Edge required distance, equipment itself or locating space structure are complicated, it is difficult to directly observe, it can not be using the conventional hand such as infrared measurement of temperature
Section；Field unit is prevented using patch type, integrated thermistor, analog-to-digital conversion module, protenchyma connected network communication module etc., all insulation
Water seal dress, size is small, and in-site installation is convenient, can low cost, large capacity deployment；It is suitble to regionality largely to layout, formation temperature
Measure network；It is alternatively arranged as a subsystem, is embedded among various electric power monitoring EMS systems.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of structural block diagram of temperature measurement expert system of the utility model.
Fig. 2 is the structural block diagram of field unit in the utility model.
Fig. 3 is the electrical block diagram of temperature sensor in the utility model.
Fig. 4 is end typical temperature profile schematic diagram in the utility model.
Specific embodiment
The explanation of following embodiment be with reference to attached drawing, can be to the particular implementation implemented to example the utility model
Example.
It please refers to shown in Fig. 1, the embodiments of the present invention provide a kind of temperature measurement expert system, comprising:
Field unit sticks on tested high voltage installation, for acquiring the temperature of tested high voltage installation；
Temperature data processing system is communicated to connect with the field unit, for handling the real-time of each field unit acquisition
Temperature data forms database；And the coding of built-in each field unit, it is corresponding to stick tested high voltage installation and installation ground
The GPS coordinate information of point；When monitoring temperature change more than predetermined threshold, warning information is sent；
Client is connect with the Temperature Treatment system communication, for receiving the temperature data processing system transmission
Warning information, and the coding of the field unit to break down from temperature data processing system reading, know sticked tested
The GPS coordinate information of high voltage installation and infield.
Further, referring again to shown in Fig. 2, field unit includes:
Temperature sensor, for acquiring the temperature of high voltage installation；
Analog-to-digital conversion module, the analog temperature signal for acquiring temperature sensor are converted to digital temperature signal；
Communication module, the digital temperature signal for exporting analog-to-digital conversion module are sent to the temperature data processing system
System.
In the present embodiment, field unit is encapsulated using all insulation waterproof cover 10, and size is small, and in-site installation is convenient.And temperature
Spending sensor, analog-to-digital conversion module and communication module is low-power consumption element, is powered by battery, using the time up to 5 years, and
Battery can be replaced during equipment periodic inspection.
Incorporated by reference to shown in Fig. 3, temperature sensor is specifically included:
Clocked flip-flop 555 and the thermistor Rt being connected on clocked flip-flop 555 and calculating resistance R1, wherein
The both ends thermistor Rt are connected to the first input port 7 and the second input port 2 of clocked flip-flop 555, calculate resistance
The one end R1 is connected to the first input port 7 of clocked flip-flop 555, and the other end is connected to the voltage input of clocked flip-flop 555
Second input port 2 of port 8, clocked flip-flop 555 is grounded by capacitor C.
Digitized temperature sensor signal in order to obtain is convenient for logical process, and the present embodiment is by thermistor Rt resistance value
Variation be converted to pulse period variation, then the available digital signal for having certain relationship with temperature value of pulse count, warp
The temperature value of high voltage installation to be measured can be obtained after the processing of temperature data processing system.
Clocked flip-flop 555 exports periodic high level pulse signal and low level pulse signal (being square-wave pulse)
To analog-to-digital conversion module, wherein the cycle T 1=R1Cln2 of high level pulse, the cycle T 2=RtCln2 of low level pulse, by
Counting clock in analog-to-digital conversion module counts the cycle T 1 of high level pulse and the cycle T 2 of low level pulse, obtains
Two count values of T1, T2.To reduce influence of the capacitor C to measurement accuracy, take T1/T2(count value) ratio as sensing letter
Number, the resistance value of Rt=R1T2/T1, cycle count value T1, T2 and calculating resistance R1 by two pulse signals of measuring signal can
With thermistor resistance value Rt at a temperature of temperature data processing system calculates corresponding measurement, then according to thermistor Rt with
Temperature curve calculates the temperature value of tested high voltage installation.
In view of follow-up data transmission needs the regular hour every time, about 20ms or so, in order to guarantee that data have enough
Time send, the cycle T 1 of high level pulse and the cycle T 2 of low level pulse should meet T1+T2 >=50ms.In addition, in height
In warm situation, the resistance value of thermistor Rt sharply declines, corresponding T2 pulse width very little, can be kept for certain period
Change T1=R1Cln2=50ms, T2 then within the scope of 0~50ms by adjusting the resistance value for calculating resistance R1.
Again as shown in Figure 2 it is found that thermistor Rt is applied to measured high voltage and sets from the extraction of all insulation waterproof cover 10
Standby surface, temperature sensor other elements are encapsulated in all insulation waterproof cover 10, and are mounted on the position adjacent with thermistor Rt
It sets.Compared with metal material, the temperature coefficient of resistivity of thermistor Rt is 10~100 times of metal material, even higher,
And according to the semiconductor material of selection difference, temperature coefficient of resistivity can have from-(1~6) %/DEG C to+60%/DEG C range
Various numerical value, therefore its sensitivity much higher than metal fever resistance, thermocouple and other temperature-sensitive elements, adapted it is simply secondary
Instrument can detecte out 0.1 × 10-5DEG C temperature change.It, can will be hot since semiconductor material resistivity is much higher than metal
Very little is made in the size of quick resistance Rt: for example, bead thermistor can be as small as the pearl body that diameter is φ 0.2mm, it is small in this way
Temperature element not only thermal inertia is small, fast response time, on environment to be measured influence very little, but also can be used for measure it is very narrow
The temperature in narrow space, such as gap, high-voltage contact gap etc..Thermistor Rt resistance value can be 102- 105It is arbitrarily selected between ohm,
Since resistance value is higher, there is no cold junction compensation problems when similar use thermocouple, without consideration wire feed throughs resistance and connect
Influence of the line mode to temperature measurement accuracy, therefore using more convenient.In addition, the loss of thermistor Rt power consumption is small, overload capacity is strong,
Operating temperature range is wide, is suitable for remote temperature measurement and temperature controls；Service life is long, easy to maintain, is easy to make, cheap.
In the present embodiment, due to volume of transmitted data very little, but require communication penetration power strong, it is low in energy consumption, therefore communication module is adopted
With protenchyma connected network communication, the protenchyma connected network communication chip NB-IoT module of Huawei Company can be selected, it is based on honeycomb
Narrowband Internet of Things, be able to achieve low power consuming devices wide area network cellular data connect, the power consumption of user equipment can be significantly improved,
It the characteristics of power system capacity and depth covering, low cost and low-power consumption, lays the foundation to be widely applied in next step.Currently, domestic
The communication mode is supported in telecom operation commercial city.
Temperature data processing system carries out data storage using general cloud platform computing technique and analysis, major function include
The real time temperature data of each field unit are handled, database is formed；The unique encodings of built-in each field unit, correspondence are sticked
The GPS coordinate information of high voltage installation and infield.Temperature data processing system is stored with the parameter of tested high voltage installation
And typical temperature profile, when calculated tested high voltage installation temperature value and temperature value corresponding on typical temperature profile it
Between difference be more than predetermined threshold when, send warning information.
Analysis expert module built in client, not only can supervision equipment temperature change in real time, to because of insulation ag(e)ing or
Jump in temperature Real-time Alarm caused by external force is destroyed, and application apparatus Life cycle theory, can receive at temperature data
The temperature pre-warning information that reason system pushes in real time.Client can also configure according to the actual application, from temperature data
Reason system calls corresponding device parameter and typical temperature profile and is stored in local, and the two is consistent when a fault is found,
Client can read the coding of the field unit from temperature data processing system, know sticked high voltage electric equipment and installation
The GPS coordinate information in place is very suitable to the troubleshooting of underground high-tension cable to easily find abort situation.Visitor
Family end can be built in mobile terminal, be easy to use.
A kind of application scenarios of the utility model embodiment are as shown in figure 4, cable connector leads to short-circuit jump because insulation reduces
The main reason for lock is cable fault.Under normal conditions, the temperature of buried cable depends on institute's bringing onto load, with the electric current passed through
It is directly proportional, and it is little with ambient temperature relationship.It is influenced when due to long operational time or water logging etc., end insulation can gradually
It reduces, fever causes temperature to increase, and accumulation will lead to insulation breakdown to a certain extent and short circuit is tripped.It is usually reduced due to insulating
A slow process, thus after observing that cable head temperature is stepped up can with early warning, take turn power supply etc. modes and
When overhaul plan, reduce loss of outage to greatest extent.A usual cable has many connectors, and the utility model embodiment can be with
Quick fault point reduces the repairing telegram in reply time.
By above description it is found that the utility model has the beneficial effects that: being suitable for 10 kilovolts and the above buried cable
The temperature monitoring of the power equipments such as connector, switchgear, GIS stacked switch, high voltage bus, these high voltage installations are in high electricity
, there is insulation distance requirement in pressure ring border, and equipment itself or locating space structure are complicated, it is difficult to directly observe, can not apply infrared survey
The conventional means such as temperature；Field unit uses patch type, integrated thermistor, analog-to-digital conversion module, protenchyma connected network communication module
Deng all insulation waterproof enclosure, size is small, and in-site installation is convenient, can low cost, large capacity deployment；It is suitble to regional a large amount of cloth
Point, formation temperature measure network；It is alternatively arranged as a subsystem, is embedded among various electric power monitoring EMS systems.
Above disclosures are merely preferred embodiments of the utility model, the utility model cannot be limited with this certainly
Interest field, therefore equivalent variations made according to the claim of the utility model still fall within the scope of the utility model.
Claims (10)
1. a kind of temperature measures expert system characterized by comprising
Field unit sticks on tested high voltage installation, for acquiring the temperature of tested high voltage installation；
Temperature data processing system is communicated to connect with the field unit, for handling the real time temperature of each field unit acquisition
Data form database；And the coding of built-in each field unit, corresponding tested high voltage installation and the infield of sticking
GPS coordinate information；When monitoring temperature change more than predetermined threshold, warning information is sent；
Client is connect with the Temperature Treatment system communication, the early warning sent for receiving the temperature data processing system
Information, and the coding of the field unit to break down from temperature data processing system reading are known and stick tested high electricity
Press the GPS coordinate information of equipment and infield.
2. temperature according to claim 1 measures expert system, which is characterized in that the field unit specifically includes:
Temperature sensor, for acquiring the temperature of high voltage installation；
Analog-to-digital conversion module, the analog temperature signal for acquiring the temperature sensor are converted to digital temperature signal；
Communication module, the digital temperature signal for exporting the analog-to-digital conversion module are sent to the temperature data processing system
System.
3. temperature according to claim 2 measures expert system, which is characterized in that the temperature sensor specifically includes:
Clocked flip-flop and the thermistor Rt being connected on the clocked flip-flop and calculating resistance R1, the thermistor
The both ends Rt are connected to the first input port and the second input port of the clocked flip-flop, the one end the calculating resistance R1
It is connected to the first input port of the clocked flip-flop, the other end is connected to the voltage input port of the clocked flip-flop,
Second input port of the clocked flip-flop is grounded by capacitor C.
4. temperature according to claim 3 measures expert system, which is characterized in that the clocked flip-flop is for exporting week
The high level pulse signal and low level pulse signal of phase property, wherein the cycle T 1=R1Cln2 of high level pulse signal, low electricity
The cycle T 2=RtCln2 of flat pulse signal.
5. temperature according to claim 4 measures expert system, which is characterized in that the analog-to-digital conversion module is also used to connect
The high level pulse signal and low level pulse signal are received, and by counting clock to 1 He of cycle T of the high level pulse
The cycle T 2 of the low level pulse is counted, and two count values of T1, T2 are obtained.
6. temperature according to claim 5 measures expert system, which is characterized in that the temperature data processing system is used for
According to the count value of the cycle T 1 of the high level pulse signal, the count value of the cycle T 2 of the low level pulse signal and institute
It states and calculates the computing the resistor value of resistance R1 and go out the resistance value of the thermistor Rt at a temperature of corresponding measurement, further according to thermistor Rt and temperature
Degree relation curve calculates the temperature value of tested high voltage installation.
7. temperature according to claim 6 measures expert system, which is characterized in that the temperature data processing system storage
There are the parameter and typical temperature profile of tested high voltage installation, when the temperature value and typical case's temperature of calculated tested high voltage installation
When the difference write music on line between corresponding temperature value is more than predetermined threshold, warning information is sent.
8. temperature according to claim 4 measures expert system, which is characterized in that the period of the high level pulse signal
The cycle T 2 of T1 and the low level pulse signal meets T1+T2 >=50ms.
9. temperature according to claim 8 measures expert system, which is characterized in that the period of the high level pulse signal
T1 is 50ms, and the value range of the cycle T 2 of the low level pulse signal is 0~50ms.
10. temperature according to claim 4 measures expert system, which is characterized in that the field unit uses all insulation
Waterproof cover encapsulation, the thermistor Rt are drawn from all insulation waterproof cover, are pasted on tested high voltage installation surface, described
All insulation waterproof cover is mounted on the position adjacent with the thermistor Rt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821302440.2U CN208420209U (en) | 2018-08-14 | 2018-08-14 | A kind of temperature measurement expert system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821302440.2U CN208420209U (en) | 2018-08-14 | 2018-08-14 | A kind of temperature measurement expert system |
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| CN208420209U true CN208420209U (en) | 2019-01-22 |
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| CN201821302440.2U Expired - Fee Related CN208420209U (en) | 2018-08-14 | 2018-08-14 | A kind of temperature measurement expert system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111220288A (en) * | 2020-02-27 | 2020-06-02 | 南京蓝慧电力科技有限公司 | Intelligent temperature detection system of high-voltage switch cabinet |
| CN117367600A (en) * | 2023-10-13 | 2024-01-09 | 浙江茂丰电气有限公司 | Intelligent monitoring system and method for switch cabinet and storage medium |
-
2018
- 2018-08-14 CN CN201821302440.2U patent/CN208420209U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111220288A (en) * | 2020-02-27 | 2020-06-02 | 南京蓝慧电力科技有限公司 | Intelligent temperature detection system of high-voltage switch cabinet |
| CN117367600A (en) * | 2023-10-13 | 2024-01-09 | 浙江茂丰电气有限公司 | Intelligent monitoring system and method for switch cabinet and storage medium |
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