CN106959168B - Temperature monitoring system of outgoing cable trench - Google Patents
Temperature monitoring system of outgoing cable trench Download PDFInfo
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- CN106959168B CN106959168B CN201710295310.4A CN201710295310A CN106959168B CN 106959168 B CN106959168 B CN 106959168B CN 201710295310 A CN201710295310 A CN 201710295310A CN 106959168 B CN106959168 B CN 106959168B
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 167
- 239000000523 sample Substances 0.000 claims abstract description 51
- 238000001816 cooling Methods 0.000 claims description 23
- 238000004891 communication Methods 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims 1
- 239000000741 silica gel Substances 0.000 claims 1
- 229910002027 silica gel Inorganic materials 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/026—Means for indicating or recording specially adapted for thermometers arrangements for monitoring a plurality of temperatures, e.g. by multiplexing
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention relates to a temperature monitoring system of an outgoing cable trench, which is characterized in that a mobile terminal is used for sending short message information to an online monitoring main station, the online monitoring main station is used for distributing temperature monitoring instructions to monitoring substations, the monitoring substations acquire detection temperature information from corresponding cable temperature probes according to the temperature monitoring instructions, and a plurality of cable temperature probes are arranged on the surface of an outgoing cable, so that the temperature of the outgoing cable trench can be efficiently monitored and inquired in real time.
Description
Technical Field
The invention relates to the technical field of power cable detection, in particular to a temperature monitoring system of an outgoing cable trench.
Background
The cable generates heat due to long-term heavy overload of the 10 KV outgoing cable, the insulation performance of the cable insulation layer is reduced due to long-term high temperature, the insulation layer is accelerated to deteriorate, the resistance is increased due to high temperature, the heat is increased, and the electric energy loss is increased. Therefore, the temperature of the cable line is measured, and the temperature of the cable trench is reduced. At present, the temperature of the outgoing cable trench is usually measured once or more times in real time by a traditional infrared temperature measuring device and the like.
The current temperature measuring mode can only adopt portable equipment such as an infrared thermometer and the like to measure the temperature of the cable line in the peak load period on site, and the cable temperature change cannot be mastered in real time.
Disclosure of Invention
Based on the above, it is necessary to provide a temperature monitoring system for an outgoing cable trench, which can monitor the temperature of the outgoing cable trench in real time, aiming at the technical problems that the temperature monitoring method for the outgoing cable trench is not real-time and has low efficiency.
The temperature monitoring system of the outgoing cable trench comprises a mobile terminal, an on-line monitoring main station, a monitoring substation and a cable temperature probe; the mobile terminal is in communication connection with the online monitoring master station, the online monitoring master station is connected with a plurality of monitoring substations, and each monitoring substation is connected with a plurality of cable temperature probes;
the mobile terminal is used for sending a monitoring short message command to the online monitoring master station, wherein the monitoring short message command comprises identification information of a cable temperature probe to be tested; receiving and displaying the temperature information sent by the online monitoring master station;
the on-line monitoring master station is used for receiving the monitoring short message command, generating a temperature monitoring instruction according to the identification information of the cable temperature probe to be tested, and sending the temperature monitoring instruction to the corresponding monitoring substation; receiving temperature information returned by the monitoring substation and sending the temperature information to the mobile terminal in a short message mode;
the monitoring substation is used for receiving the temperature monitoring instruction, analyzing and acquiring identification information of the cable temperature probe to be tested, acquiring temperature information detected by the corresponding cable temperature probe according to the identification, and sending the temperature information to the online monitoring main station.
According to the temperature monitoring system for the outgoing cable trench, the mobile terminal sends the short message information to the online monitoring main station, the online monitoring main station distributes the temperature monitoring instruction to the monitoring sub-station, and the monitoring sub-station acquires the detection temperature information from the corresponding cable temperature probes according to the temperature monitoring instruction, so that the plurality of cable temperature probes are arranged on the surface of the outgoing cable, and the temperature of the outgoing cable trench can be efficiently monitored and inquired in real time.
Drawings
FIG. 1 is a schematic diagram of a temperature monitoring system for an outlet cable pit according to one embodiment;
fig. 2 is a schematic structural diagram of a temperature monitoring system of an outgoing cable trench according to another embodiment.
Detailed Description
The following describes in detail the embodiments of the temperature monitoring system for an outgoing cable trench according to the invention with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a temperature monitoring system for an outgoing cable trench according to an embodiment.
The temperature monitoring system of the cable outlet ditch comprises: a mobile terminal 12, an on-line monitoring master station 14, a monitoring substation 16 and a cable temperature probe 18.
The mobile terminal 12 is in communication connection with the on-line monitoring master station 14, the on-line monitoring master station 14 is connected with a plurality of monitoring substations 16, and each monitoring substation 16 is connected with a plurality of cable temperature probes 18;
the mobile terminal 12 is configured to send a monitoring sms command to the on-line monitoring master station 14, where the monitoring sms command includes identification information of the cable temperature probe 18 to be tested; receiving and displaying temperature information sent by the on-line monitoring master station 14;
the on-line monitoring master station 14 is configured to receive the monitoring short message command, generate a temperature monitoring instruction according to the identification information of the cable temperature probe 18 to be tested, and send the temperature monitoring instruction to the corresponding monitoring substation 16; acquiring temperature information returned by the monitoring substation 16 and sending the temperature information to the mobile terminal 12 in a short message mode;
the monitoring substation 16 is configured to receive the temperature monitoring instruction, parse and obtain identification information of the cable temperature probe to be tested, obtain temperature information detected by the corresponding cable temperature probe 18 according to the identification information, and send the temperature information to the online monitoring master station 14.
The mobile terminal 12 may be a communication device having a short message sending function, such as a mobile phone, a tablet computer, a smart phone, etc. The primary station 14 is monitored on-line by means of a short message electrical junction temperature. The mobile terminal 12 performs short message transceiving through a short message transceiving number (which can be set), and is used for receiving temperature information, overtemperature alarm release and sending effective short message commands to the on-line monitoring master station 14 through the short message transceiving number.
The mobile terminal 12 may be configured to reply to the real-time temperature of the cable monitored by one of the cable temperature probes 18 by sending a sms command to the on-line monitoring master station 14, or may be configured to reply to the real-time temperature of the cable monitored by all of the cable temperature probes 18.
The on-line monitoring master station 14 may set one or more sms numbers for authorized access, and in one embodiment, the on-line monitoring master station 14 sets 1 to 4 sms numbers for authorized access.
Each of the on-line monitoring master stations 14 may be connected to one or more monitoring substations 16, each of the monitoring substations 16 may be connected to one or more cable temperature probes 18, and in one embodiment, each of the monitoring substations 16 may be connected to 1 to 4 cable temperature probes 18.
According to the temperature monitoring system for the outgoing cable trench, the mobile terminal sends the short message information to the online monitoring main station, the online monitoring main station distributes the temperature monitoring instruction to the monitoring sub-station, and the monitoring sub-station acquires the detection temperature information from the corresponding cable temperature probes according to the temperature monitoring instruction, so that the plurality of cable temperature probes are arranged on the surface of the outgoing cable, and the temperature of the outgoing cable trench can be efficiently monitored and inquired in real time.
In addition, the change of the cable temperature can be mastered in advance or in real time, and the time point when the cable temperature exceeds a normal value can be mastered and counted accurately.
The defect that the current temperature measuring mode can only adopt portable equipment such as an infrared thermometer and the like to measure the temperature of the cable line in the peak load period on site and can not grasp the temperature change of the cable in advance or in real time is avoided; accurately grasping and counting the time point when the temperature of the cable exceeds a normal value; and the temperature is not easily influenced by external factors such as weather environment, and the real temperature conditions of the cable and the cable pit all day can be mastered.
In one embodiment, after the on-line monitoring master station 14 receives the monitoring sms command, it verifies the identity of the mobile terminal 12 according to the sms receiving/sending number of the mobile terminal 12, and when the identity verification is legal, it generates a temperature monitoring instruction according to the identification information of the cable temperature probe 18 to be tested, and sends the temperature monitoring instruction to the corresponding monitoring substation 16.
In this embodiment, only if the mobile phone number that has been successfully preset as the short message receiving and sending number in the online monitoring master station 14 sends a short message command to the master station, the online monitoring master station 14 will process the short message, so that confidentiality of related monitoring information can be improved, and illegal calling can be prevented.
The on-line monitoring master station 14 collects the temperature information collected by each monitoring substation 16, and can send and receive short messages to the mobile terminal 12 through the self-contained short message/mobile data communication module. And can receive the overtemperature alarm signal sent by the monitoring substation 16 and automatically send a short message notification to the short message receiving and sending number, and can also receive and process the effective mobile short message command sent from the short message receiving and sending number.
In one embodiment, the monitoring substation 16 and the cable temperature probe 18 to be tested are connected by a wire, and the monitoring substation 16 and the on-line monitoring master station 14 are connected by a 485 wire and communicate using MODBUS protocol.
In this embodiment, the monitoring substation 16 is configured to collect the temperature of the cable temperature probe 18, and is connected to the cable temperature probe 18 by a wire. The plurality of monitoring substations 16 are connected to the on-line monitoring master station 14 through 485 lines, and communicate using MODBUS protocol, so that stable data transmission can be realized.
In one embodiment, when the temperature information detected by the temperature probe 18 of any cable to be tested acquired by the monitoring substation 16 exceeds a preset overrun alarm temperature threshold, the monitoring substation 16 sends an overrun alarm request to the online monitoring master station 14, and the online monitoring master station 14 sends a notification short message of the overrun alarm to the mobile terminal 12 according to the overrun alarm request.
In this embodiment, the monitoring substation 16 presets an overrun alarm temperature threshold, and when the temperature information detected by any path of cable temperature probes 18 to be tested exceeds the preset overrun alarm temperature threshold, an overrun alarm is sent out, so that the mobile terminal 12 can receive a notification short message. The over-limit alarm temperature threshold is a temperature value when the cable reaches an unsafe operating environment, so that the temperature safety of the cable can be pre-warned.
In one embodiment, when the temperature information detected by the cable temperature probe 18 to be tested and acquired by the monitoring substation 16 exceeds the threshold value of the overrun alarm temperature and then falls below the difference between the threshold value of the overrun alarm temperature and the preset return difference temperature value, the monitoring substation 16 sends a request for canceling the overrun alarm to the online monitoring master station 14, and the online monitoring master station 14 sends a notification short message for canceling the overrun alarm to the mobile terminal 12 according to the request for canceling the overrun alarm.
In this embodiment, the monitoring substation 16 sets a return difference temperature value in addition to the preset overrun alarm temperature threshold, and when the temperature information detected by any one cable temperature probe 18 to be tested exceeds the overrun alarm temperature threshold and then falls below the difference between the overrun alarm temperature threshold and the preset return difference temperature value, the overrun alarm is released. After the overrun alarm is sent out, the alarm can be released timely according to the recovery degree of the cable temperature drop.
In one embodiment, the on-line monitoring master station 14 periodically obtains temperature information detected by the cable temperature probes 18 to be tested from each of the monitoring substations 16 and sends the temperature information to the mobile terminal 12 in a short message.
By the on-line monitoring master station 14, the monitoring stability can be improved by regularly transmitting the real-time information of the monitoring site temperature to the mobile terminal 12. In one embodiment, the timed interval is in minutes, and a countdown mode is adopted, the highest setting continuous monitoring duration is less than 999 minutes, and when the value is equal to 0, no information is automatically sent.
In one embodiment, the cable temperature probes 18 are each bonded to the skin of the outgoing cable with a curable thermally conductive silicone. The cable temperature probe 18 to be measured is connected to the monitoring substation by a wire to allow the monitoring substation 16 to obtain the real-time temperature of the cable.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a temperature monitoring system of an outgoing cable trench according to another embodiment.
In this embodiment, the temperature monitoring system of the outgoing cable trench further includes a cooling fan set 19, each monitoring substation 16 is provided with a normally open relay, an access port A2 of each normally open relay is connected to a driving power supply, and an outgoing port A1 is connected to a power supply input port of the cooling fan set 19; the monitoring substation 16 controls the normally open relay to be opened and closed according to the temperature information detected by the cable temperature probe 18 so as to control the cooling fan set to work.
In this embodiment, each monitoring substation 16 is provided with a normally open relay, and can monitor the temperature of 1-4 cables by wired connection of 1-4 cable temperature probes 18. The normally open relay point access port of each monitoring substation 16 is connected with a group of fire wires, and the outlet port is connected with the fire wire port of the power supply source of the cooling fan set; the monitoring substation 16 controls the power supply of the cooling fan set 19 by controlling the opening and closing of the normally open relay.
In one embodiment, the monitoring substation 16 closes the normally open relay when monitoring that the temperature information detected by any one cable temperature probe 18 to be tested exceeds a preset overrun alarm temperature threshold; and when the temperature information detected by the cable temperature probe 18 to be detected in the path is monitored to be lower than the difference between the overrun alarm temperature threshold and the preset return difference temperature value, the normally open relay is disconnected.
The cooling fan set 19 on the cable pit works after being electrified, cold air is replaced for the cable pit, and the cable is cooled in an air cooling mode. When the cooling fan set is started, the cooling fan set 19 is disconnected after the monitoring substation 16 disconnects the relay only when all the alarm cables detected by the monitoring substation 16 are reduced to a difference that the actual temperature value is lower than the overrun alarm temperature value minus the return difference temperature value, and the operation is stopped.
In one embodiment, more than two of the monitoring substations 16 that connect the cooling fan set power supply are connected in parallel.
The normally open relay outlet ports of the plurality of monitoring substations 16 are connected to the power supply live wire port of the cooling fan set 19 in a parallel connection mode, and any one monitoring substation 16 in the same cable pit can supply power to the cooling fan set 19 by controlling the normally open relay.
In one embodiment, the cooling fan set may be replaced with a water-cooled duct set, a fan set plus water-cooled duct set.
In one embodiment, the monitoring substation 16 may be a 4-way probe 1-way control output monitoring substation, or a 3-way probe 1-way control output monitoring substation may be used.
The temperature monitoring system of the outgoing cable trench automatically sends the short message, so that the real-time temperature of each group of cables can be monitored all-weather and fast; when the temperature exceeds the limit temperature, the system actively starts an alarm short message to remind of taking preventive measures to prevent the cable from being overloaded for a long time and the temperature from being too high; the cooling fan set can be automatically started after overtemperature, and cold air is blown in to cool the cable trench, so that the aim of automatically cooling the cable after overtemperature is fulfilled. By sending a short message instruction, the real-time temperature of the appointed or all cables can be intelligently obtained.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (10)
1. The temperature monitoring system of the outgoing cable trench is characterized by comprising a mobile terminal, an online monitoring main station, a monitoring substation, a cable temperature probe and a cooling fan set; the mobile terminal is in communication connection with the online monitoring master station, the online monitoring master station is connected with a plurality of monitoring substations, and each monitoring substation is connected with a plurality of cable temperature probes; each monitoring substation is provided with a normally open relay, an access port of each normally open relay is connected with a driving power supply, and an outlet port of each normally open relay is connected to a power supply input port of the cooling fan set; the monitoring substation is connected with the online monitoring master station through a 485 line;
the mobile terminal is used for sending a monitoring short message command to the online monitoring master station, wherein the monitoring short message command comprises identification information of a cable temperature probe to be tested; receiving and displaying the temperature information sent by the online monitoring master station; the cable temperature probes to be tested are respectively adhered to the surface of the outgoing cable by using solidifiable heat-conducting silica gel;
the on-line monitoring master station is used for receiving the monitoring short message command, verifying the identity of the mobile terminal according to the short message receiving and transmitting number of the mobile terminal, generating a temperature monitoring instruction according to the identification information of the cable temperature probe to be tested when the identity is verified to be legal, and sending the temperature monitoring instruction to the corresponding monitoring substation; acquiring temperature information returned by the monitoring substation and sending the temperature information to the mobile terminal in a short message mode;
the monitoring substation is used for receiving the temperature monitoring instruction, analyzing and acquiring identification information of the cable temperature probe to be tested, acquiring temperature information detected by the corresponding cable temperature probe according to the identification information, and sending the temperature information to the online monitoring main station; the monitoring substation is connected with the cable temperature probe to be tested through a wire;
the monitoring substation is also used for closing the normally open relay when the temperature information detected by any cable temperature probe to be detected exceeds a preset overrun alarm temperature threshold value so as to control the cooling fan set to start and send an overrun alarm request to the online monitoring main station;
the online monitoring master station is also used for sending out a notification short message of out-of-limit alarm to the mobile terminal according to the out-of-limit alarm request;
the monitoring substation is also used for switching off the normally open relay when the temperature information detected by the cable temperature probe to be detected in the path is lower than the difference between the overrun alarm temperature threshold and a preset return difference temperature value so as to control the cooling fan set to stop running and sending a request for releasing the overrun alarm to the online monitoring main station;
the online monitoring master station is also used for sending a notification short message for releasing the overrun alarm to the mobile terminal according to the overrun alarm releasing request;
the on-line monitoring main station is also used for regularly acquiring temperature information detected by the cable temperature probes to be detected from each monitoring substation and sending the temperature information to the mobile terminal in a short message mode.
2. The system of claim 1, wherein the on-line monitoring master station sets 1 to 4 authorized access short message transceiving numbers.
3. The system of claim 1, wherein each of said monitoring substations is connected to 1 to 4 of said cable temperature probes.
4. The system of claim 1, wherein the over-limit alarm temperature threshold is a temperature value at which the cable reaches an unsafe operating environment.
5. The system of claim 1, wherein the timed interval is in minutes and is in a countdown fashion.
6. The system of claim 1, wherein the cooling fan assembly is powered to displace cool air from the cable duct.
7. The system of claim 1, wherein the cooling fan unit cools the cable by air cooling.
8. The system of claim 1, wherein the mobile terminal is a communication device having a short message sending function.
9. The outgoing cable trench temperature monitoring system of claim 8, wherein the mobile terminal is a tablet computer or a smart phone.
10. The system of claim 1, wherein more than two of said monitoring substations connected to said cooling fan set power supply are connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710295310.4A CN106959168B (en) | 2017-04-28 | 2017-04-28 | Temperature monitoring system of outgoing cable trench |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710295310.4A CN106959168B (en) | 2017-04-28 | 2017-04-28 | Temperature monitoring system of outgoing cable trench |
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| CN106959168A CN106959168A (en) | 2017-07-18 |
| CN106959168B true CN106959168B (en) | 2024-02-20 |
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| CN110514309B (en) * | 2019-09-06 | 2021-07-06 | 杭州纵联科技有限公司 | Wireless temperature sensor and wireless temperature measuring device comprising same |
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| CN106959168A (en) | 2017-07-18 |
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