CN111130394A - Power taking ring, high-voltage power grid contact temperature detection device and monitoring system - Google Patents
Power taking ring, high-voltage power grid contact temperature detection device and monitoring system Download PDFInfo
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- CN111130394A CN111130394A CN202010039166.XA CN202010039166A CN111130394A CN 111130394 A CN111130394 A CN 111130394A CN 202010039166 A CN202010039166 A CN 202010039166A CN 111130394 A CN111130394 A CN 111130394A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N11/00—Generators or motors not provided for elsewhere; Alleged perpetua mobilia obtained by electric or magnetic means
- H02N11/002—Generators
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- 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
- G01K1/024—Means for indicating or recording specially adapted for thermometers for remote indication
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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 invention designs an electricity taking ring, a high-voltage power grid connection point temperature detection device and a monitoring system, wherein the electricity taking ring is arranged around a columnar electric conductor close to a high-voltage power grid connection point and comprises a plurality of thermocouples which are circumferentially arranged along the columnar electric conductor from a first thermocouple to a last thermocouple; each thermocouple consists of a first conductor and a second conductor which are made of different materials, the defined hot ends of the first conductor and the second conductor of each thermocouple are connected with each other, and the defined cold ends of the first conductor and the second conductor of each thermocouple are not connected with each other; the inner side of the electricity taking ring is provided with an insulating heat conducting layer, the definition hot ends of the thermocouples are arranged in a manner of being tightly attached to the insulating heat conducting layer, the outer sides of the definition hot ends of the thermocouples are additionally provided with insulating heat insulating layers, and the definition cold ends of the thermocouples are arranged on the outer sides of the insulating heat insulating layers in a bending mode. The wireless module is used for collecting the temperature of the electric contact, the electric energy is completely self-sufficient, adverse effects possibly caused by a power grid such as a connecting line are eliminated, the installation convenience is greatly improved, and the combination and the expansion of the temperature measurement system are greatly facilitated.
Description
Technical Field
The invention relates to the technical field of measurement and control, relates to a temperature detection technology, and particularly relates to wireless temperature detection of a high-voltage power grid contact.
Background
The high-voltage power grid and the electrical appliance have a large number of electric connection points, heating in a large-current working state is difficult to avoid due to contact resistance, and transitional heating causes a series of problems of contact fusion welding, insulation failure and the like, so that great potential safety hazards of power grid operation are brought.
The infrared temperature measuring tool is used for carrying out artificial non-contact electric contact temperature measurement and is commonly applied to a plurality of power transmission and transformation systems; a multipoint temperature inspection system is constructed, and is also one of main detection technical means for monitoring heating of contacts in a power grid. The former method needs to rely on manual point-by-point detection and data summarization, and the latter method involves numerous connection points and is often not allowed in the power transmission and transformation station. One idea for solving the problems is to construct a wireless multipoint temperature detection system and realize automatic acquisition, analysis and utilization of heating point temperature data. However, when the method is implemented, the wireless temperature measuring unit is required to be equipped with a power supply capable of working for a long time, and the problem of limitation of power supply duration, installation volume and the like still exists when the wireless temperature measuring unit is powered by a battery.
Traditional temperature system of patrolling and examining is gathered the sensing head by the multiple spot temperature and is gathered temperature signal to the temperature appearance of patrolling and examining is transmitted to wired mode. In the system construction mode, each temperature sensor must be independently attached to a temperature measuring point, and a connecting wire is required to be arranged to introduce a signal into a patrol instrument, which is often not allowed or requires more complicated construction investment in a high-voltage power grid.
The improved multipoint temperature detection system is characterized in that a wireless temperature acquisition module is used for networking and collecting acquired temperature signals to a host, and the problem that a connecting wire from a sensor to the host is not suitable for high-voltage power grid wiring is solved. However, the wireless temperature acquisition module needs a power supply for working and wireless signal communication, even though the wireless temperature acquisition module is designed with a low-power-consumption circuit, the module with a small-capacity lithium battery can generally only maintain the working life for years, and the more frequent the signal acquisition and communication, the greater the power consumption, and the shorter the maintenance time.
The temperature acquisition module can be powered by an induction power-taking mode on a conductor through which large current passes, but the problems of good structure of a power-taking device, how to ensure stable power taking when the current is changed in an overlarge range and the like in power taking on a high-voltage power grid still need to be considered.
Disclosure of Invention
The invention aims to provide a passive high-voltage power grid connection point temperature detection device aiming at the defects in the prior art, which directly obtains electric energy from a high-voltage power grid electric connection point through a thermoelectric effect of temperature difference, supplies power to a temperature acquisition device circuit after a specific structure and circuit connection and voltage stabilization, and solves the problems that a traditional wireless temperature acquisition module needs to be provided with a battery and needs to be maintained regularly.
In order to achieve the purpose, the invention firstly designs a power taking ring for taking power from a high-voltage power grid joint close to a detected high-voltage power grid according to the thermoelectric effect, wherein the power taking ring is arranged around a columnar conductor close to the high-voltage power grid joint and comprises a plurality of thermocouples, and the plurality of thermocouples are circumferentially arranged along the columnar conductor from a first thermocouple to a last thermocouple;
each thermocouple consists of a first conductor and a second conductor which are made of different materials, the defined hot ends of the first conductor and the second conductor of each thermocouple are connected with each other, and the defined cold ends of the first conductor and the second conductor of each thermocouple are not connected with each other;
the defined cold ends of the first conductors of the first thermocouples are used as a first pair of external connecting ends of the electricity taking ring, the defined cold ends of the second conductors of the first thermocouples are connected with the defined cold ends of the first conductors of the adjacent thermocouples behind the first conductors, and so on, the defined cold ends of the first conductors of the last thermocouples are connected with the defined cold ends of the second conductors of the adjacent thermocouples in front of the last thermocouples, and the defined cold ends of the second conductors of the last thermocouples are used as a second pair of external connecting ends of the electricity taking ring;
the inner side of the electricity taking ring is provided with an insulating heat conducting layer which is tightly attached to the cylindrical surface of the columnar electric conductor, the definition hot ends of the thermocouples are arranged tightly attached to the insulating heat conducting layer, the outer sides of the definition hot ends of the thermocouples are additionally provided with insulating heat insulating layers, and the definition cold ends of the thermocouples are arranged on the outer sides of the insulating heat insulating layers in a bending mode.
Furthermore, a third conductor is connected to the defined hot end of the first conductor and the second conductor of each thermocouple, the third conductor is of a sheet structure, and the inner side of the third conductor is tightly attached to the insulating heat-conducting layer.
Further, the first conductor of each thermocouple is defined to thermally terminate a first end of the third conductor, and the second conductor is defined to thermally terminate a second end of the third conductor.
Furthermore, the connection mode of the first conductor and the second conductor of the two adjacent thermocouples can be direct connection, for example, the cold end of the first conductor and the cold end of the second conductor are welded to each other, or connection can be made through a conductive wire, that is, the cold end of the first conductor and the cold end of the second conductor are respectively connected to two ends of a conductive wire.
Furthermore, a first conductor and a second conductor of the thermocouple are respectively composed of a first axial section, a radial section and a second axial section, an insulating layer is arranged between the first axial section and the second axial section, one end of the first axial section of the first conductor is a hot end of the first conductor, the other end of the first axial section of the first conductor is connected with the inner end of the radial section of the first conductor, the outer end of the radial section of the first conductor is connected with one end of the second axial section of the first conductor, the other end of the second axial section of the first conductor is a cold end of the first conductor, one end of the first axial section of the second conductor is a hot end of the second conductor, the other end of the first axial section of the second conductor is connected with the inner end of the radial section of the second conductor, the outer end of the radial section of the second conductor is connected with one end of the second axial section of the second conductor, and the other end of the.
Based on the electricity taking ring, the invention further designs a high-voltage power grid contact temperature detection device for taking electricity by using a thermoelectric effect, which comprises:
the detection circuit comprises a temperature sensor for detecting the temperature of the power grid contact point and a detection signal processing circuit for processing a detection signal of the temperature sensor;
the wireless communication module is used for wirelessly sending the power grid junction temperature information acquired by the detection circuit to the outside;
the power supply circuit is used for supplying power to the detection circuit;
the power supply circuit comprises the power taking ring, the rechargeable battery, the charging circuit and the voltage stabilizing circuit, wherein the input end of the charging circuit is connected with the output end of the power taking ring, the output end of the charging circuit is connected with the rechargeable battery, the output end of the power taking ring and the output end of the rechargeable battery are respectively connected with the input end of the voltage stabilizing circuit, and the output end of the voltage stabilizing circuit serving as the power supply output end of the power supply circuit is respectively connected with the detection circuit, the wireless communication module and the power supply input end.
Furthermore, get the electrical loop and can be the closed lantern ring structure that the size matches with heavy current tubular column, also can be flexible clitellum, through taut hasp mode fixed mounting. When the former is selected, the electronic elements forming the detection signal processing circuit, the charging circuit and the voltage stabilizing circuit can be arranged on the circuit board, the temperature sensor and the hot end of the thermocouple in the power taking ring are arranged on the same layer, the wireless communication module, the circuit board and the lantern ring are relatively fixed, the latter has better matching adaptability to large-current tubular columns of different specifications, and the circuit board can also be provided with a flexible plate and a hard plate or different auxiliary mounting structures.
The temperature acquisition of the electric contact can be realized by contact temperature measurement modes such as a thermistor, a metal thermal resistor, an integrated temperature sensor and the like. The thermocouple for taking electricity can also obtain a temperature value through thermoelectric potential value output in principle, but the thermocouple does not advocate the mode of collecting the temperature value when being used as a power supply.
Based on the detection device, the invention further provides a high-voltage power grid connection point temperature monitoring system which comprises a system computer for remote monitoring, high-voltage power grid connection point temperature detection devices arranged at each high-voltage power grid connection point, and a wireless relay transceiver for receiving detection signals of a plurality of nearby power grid connection point temperature detection devices in a wireless mode and forwarding the detection signals to the system computer. The high-voltage power grid contact temperature detection device adopts the high-voltage power grid contact temperature detection device.
The invention has the beneficial effects that: the existing multipoint temperature inspection system generally collects a plurality of temperature measuring point temperatures in a system host in a wired connection mode, and a plurality of wires are connected, so that the labor intensity of installation and construction is obviously increased, and the installation of high-voltage electrical equipment can be influenced. The wireless module is used for acquiring the temperature of the electric contact, and the electric energy is completely self-sufficient, so that the adverse effect possibly caused by a power grid such as a connecting line is eliminated, the convenience of installation is greatly improved, and the problem of later maintenance investment on the temperature measurement module is well solved in a maintenance-free mode; the number of temperature measuring points is not limited to the number of hardware interfaces any more, and only the relay transceiver limits the number of channels, which is determined by software, so that the combined capacity expansion of the temperature measuring system is greatly facilitated.
Drawings
FIG. 1 is a schematic diagram of a multiple thermocouple series circuit according to the present invention;
FIG. 2 is a schematic view of a plurality of thermocouples serially connected to form a ring structure according to the present invention;
FIG. 3 is a schematic view of the heat insulating ring of the current collecting ring of the present invention and a plurality of thermocouples connected in series without being nested together;
FIG. 4 is a schematic view of the heat insulating ring of the electricity-extracting ring of the present invention nested with a plurality of thermocouples in series;
FIG. 5 is a schematic view of the present invention with the power ring mounted on the conductive post;
FIG. 6 is a schematic block diagram of the circuit of the high voltage network contact temperature detection device of the present invention;
fig. 7 is a schematic diagram of the principle of the high-voltage grid contact temperature monitoring system of the invention.
The figures are numbered: a conductive post 1; a heat insulating ring 2; an external connection end 3; a first axial section 4; a radial segment 5; a second axial section 6; a hot end E; a cold end F; a first conductor A; a second conductor B; a conductive copper sheet C; a first conductive copper sheet C1; a second conductive copper sheet C2; a third conductive copper sheet C3; a fourth conductive copper sheet C4; a fifth conductive copper sheet C5; a sixth conductive copper sheet C6; a seventh conductive copper sheet C7; an eighth conductive copper sheet C8; the first conductive filaments D1; and a seventh conductive filament D7.
Detailed Description
The structural features and the application principle of the detection device and the system of the present invention will be further explained with reference to the accompanying drawings.
Principle of one-step electricity-taking ring structure
As shown in fig. 1, two metal conductors with different compositions are combined into a thermocouple according to the thermoelectric effect, and when there is a temperature difference between the hot end E and the cold end F of the thermocouple, a thermoelectric potential is generated in the thermocouple loop. The invention gets the electricity ringConnecting a plurality of thermocouples in series to obtain the combined potential of the thermocouple groupE. The circuit schematic diagram is shown in fig. 1, a plurality of thermocouples connected in series are surrounded to form a circular ring-shaped thermocouple group, and the structure diagram is shown in fig. 2.
As shown in fig. 1-4, in terms of structural design, for the columnar conductive branch structure on the high-voltage electrical connector, the ring-shaped thermocouple group is sleeved at the edge of the high-current contact of the conductive branch 1, and the cold end F of the thermocouple can be isolated from the hot end E as much as possible.
In order to enable the hot end E of the thermocouple to better obtain the heat on the conductive column 1, the conductive copper sheet C with a larger heat exchange surface is arranged by being attached to the conductive column 1, the conductive copper sheet can be tightly attached to the contact surface of the large-current conductive column 1, the temperature of the hot end E can be reliably obtained by the arrangement, and then the hot end E of the thermocouple is connected with the conductive copper sheet. An insulating heat conduction layer (not shown) closely attached to the cylindrical surface of the conductive column 1 is arranged on the inner side of the electricity taking ring, and when the insulating heat conduction layer is used, the conductive column 1 and the conductive copper sheet are insulated.
The hot end E and the cold end F of the thermocouple are isolated by a heat insulation ring 2 made of high-performance heat insulation materials, so that the cold end E is easy to form exact temperature difference to form electric potential.
The following specifically shows the mounting structure of the power-taking ring at the contact of the conductive column 1:
in the example shown in fig. 1 and 2, the electricity-taking ring is composed of eight thermocouples which are arranged along the circumferential direction of the heat-insulating ring 2, and the eight thermocouples are sequentially a first thermocouple, a second thermocouple, a third thermocouple, a fourth thermocouple, a fifth thermocouple, a sixth thermocouple, a seventh thermocouple and an eighth thermocouple; each thermocouple consists of a first conductor A and a second conductor B which are made of different metal materials; the cold end F of the first conductor A of the first thermocouple and the cold end F of the second conductor B of the eighth thermocouple are respectively used as two outward connecting ends 3 of the electricity taking ring, the hot end E of the first conductor A of the first thermocouple is connected with the hot end E of the second conductor B of the first thermocouple through a first conductive copper sheet C1, the cold end F of the second conductor B of the first thermocouple is connected with the cold end F of the first conductor A of the second thermocouple through a first conductive wire D1, the hot end E of the first conductor A of the second thermocouple is connected with the hot end E of the second conductor B of the second thermocouple through a second conductive copper sheet C2, … …, the hot end E of the first conductor A of the seventh thermocouple is connected with the hot end E of the second conductor B of the seventh thermocouple through a seventh conductive copper sheet C7, the cold end F of the second conductor B of the seventh thermocouple is connected with the cold end F of the first conductor A of the eighth thermocouple through a seventh conductive wire D7, and the hot end E of the first conductor A of the eighth thermocouple is connected with the hot end E of the second conductor B of the eighth thermocouple through an eighth conductive copper sheet C8.
The first conductor A and the second conductor B of each thermocouple are of a three-section structure consisting of a first axial section 4, a radial section 5 and a second axial section 6. The first end of the first axial section 4 is used as the hot end E of the first conductor A and the second conductor B to be connected with the conductive copper sheet, the second end of the first axial section 4 is connected with the inner end of the radial section 5, the outer end of the radial section 5 is connected with the first end of the second axial section 6, the second end of the second axial section 6 extends to the first end of the first axial section 4 along the axial direction, and the second end of the second axial section 6 is used as the cold end F of the first conductor A and the second conductor B.
The first axial section 4 of the first conductor A and the second conductor B of each thermocouple and each conductive copper sheet are positioned on the same layer and positioned at the inner side of the heat insulation ring 2, and the second axial section 6 of the first conductor A and the second conductor B of each thermocouple and each conductive wire are positioned on the same layer and positioned at the outer side of the heat insulation ring 2. In order to ensure reliable contact heat exchange between the conductive copper sheet in the thermocouple group and the surface of the conductive column 1, the current-carrying ring structure is designed to allow the thermocouple group and the thermal insulation ring 2 to be tightened and fixed, for example, the thermocouple group and the thermal insulation layer in fig. 2 are designed to be an open-loop flexible belt, and a nylon fastener is used to tighten the fastener (as another embodiment, not shown).
The power taking mode utilizing the thermoelectric power generation is suitable for alternating current and direct current power transmission occasions, and is obviously better than a coil induction power taking mode only suitable for alternating current power transmission occasions. The heat insulation ring 2 in the thermoelectric power generation is also helpful for obtaining a relatively accurate electric contact temperature rise value.
Second, detection device
The temperature sensor can be a thermistor, a metal resistor or other temperature sensors. The temperature sensor for collecting the temperature of the contact and the conductive copper sheet are arranged on the same layer, and a temperature sensor for detecting the ambient temperature is additionally arranged. The heating temperature rise value caused by the large current is comprehensively obtained by the two temperature sensors and is used as a basis for evaluating the contact resistance and the joint problem of the large current joint.
The schematic block circuit diagram of the detection device is shown in fig. 6. When the thermocouple group generates enough electric energy to support the singlechip detection and communication circuit to work, the circuit system can be directly powered. When the thermocouple has surplus electric energy, the battery pack can be charged; when the thermocouple temperature difference potential is small, the battery pack can still be charged.
The battery pack is configured based on the consideration of power supply redundancy design of the circuit system, namely if the battery pack does not exist, the circuit system works when the power generation of the thermocouple group reaches the standard, and does not work when the power generation does not reach the standard due to small temperature difference. In contrast to the actual requirement for temperature measurement of the electrical contact, temperature measurement is not performed when the temperature rise of the contact is relatively small, and the method is allowed. After the battery pack is configured, the circuit system can still work when the contactless temperature rise and the small temperature rise are realized, and the advantages of the battery pack can be embodied when the temperature difference acquisition period needs to be shortened and the wireless communication frequency needs to be additionally increased.
In view of efficient utilization of the generated power, the circuitry is preferably designed to a low power consumption standard; according to reasonable management and control requirements, the frequency of temperature acquisition, especially wireless communication, is limited.
Third, monitoring system
Referring to fig. 7, the monitoring system is composed of a plurality of contact temperature detecting devices, a wireless relay transceiver and a computer system. The relay transceiver mainly collects the temperature values of the power grid connection points sent by the connection point temperature detection devices and transmits the temperature values to the system computer, and can also receive instructions from the system computer to wake up the connection point temperature detection devices and configure the working modes of the connection point temperature detection devices. The system computer can analyze whether the temperature rise of the contact is in an allowable range or not by combining the environmental conditions of each contact, and can send out information such as early warning, maintenance prompt and the like once the temperature rise of the contact exceeds the allowable range.
Fourthly, application implementation process
In structure and assembly, a plurality of pairs of thermocouples are connected in series to form a thermocouple group, the hot end E of each pair of thermocouples is connected with a conductive copper sheet and is used for being attached to the surface of a large-current pipe column to obtain hot point temperature, all the related cold ends F are isolated from the hot end E by a heat insulating material and are arranged on the outer side of the heat insulating material, and the temperature of the environment cold end F can be obtained. The thermocouple group and the heat insulation material layer can be made into an integrated flexible belt and fixed at the joint edge of the high-current pipe column in a binding mode; the related working circuit board can also be fixed on the outer side surface of the heat insulation layer. A sensor for collecting the heating temperature of the large-current pipe column joint is embedded at the edge of a copper sheet at the measuring end of a thermocouple; the sensor for collecting the ambient temperature is directly arranged on the circuit board.
In the working principle, the thermocouple series connection group is used for generating electric energy, and supplies power to the whole temperature detection circuit after the voltage of the battery pack voltage stabilizing circuit is stabilized. And a double-path temperature sensor is adopted to respectively acquire the joint temperature and the environment temperature of the large-current pipe column so as to evaluate and determine the temperature rise of the joint. The measured temperature (or temperature rise) value is sent to an external data receiving terminal/relay in a WiFi or Bluetooth communication mode. When the voltage acquisition amount is too low, the circuit system enters a dormant state due to insufficient power supply, the temperature difference between the hot end E and the cold end F of the thermocouple group is small, and the temperature rise of the corresponding large-current contact is low without monitoring. Of course, if the output potential of the thermocouple group is low and the voltage of the battery pack is enough for the driving circuit to work, the temperature can still be collected and output, and the temperature can be determined by the temperature collection control period of the single chip microcomputer system or an external instruction. As shown in fig. 7, the system for monitoring the junction temperature of the power grid can be required to freely combine the size of the monitoring system with the channel capacity and the distribution area of the wireless relay transceiver.
Claims (10)
1. An electricity-taking ring for taking electricity from a high-voltage power grid connection point is arranged around a columnar electric conductor close to the high-voltage power grid connection point and is characterized by comprising a plurality of thermocouples, wherein the thermocouples are distributed along the circumferential direction of the columnar electric conductor from a first thermocouple to a last thermocouple;
each thermocouple consists of a first conductor and a second conductor which are made of different materials, the defined hot ends of the first conductor and the second conductor of each thermocouple are connected with each other, and the defined cold ends of the first conductor and the second conductor of each thermocouple are not connected with each other;
the defined cold ends of the first conductors of the first thermocouples are used as a first pair of external connecting ends of the electricity taking ring, the defined cold ends of the second conductors of the first thermocouples are connected with the defined cold ends of the first conductors of the adjacent thermocouples behind the first conductors, and so on, the defined cold ends of the first conductors of the last thermocouples are connected with the defined cold ends of the second conductors of the adjacent thermocouples in front of the last thermocouples, and the defined cold ends of the second conductors of the last thermocouples are used as a second pair of external connecting ends of the electricity taking ring; the inner side of the electricity taking ring is provided with an insulating heat conducting layer which is tightly attached to the cylindrical surface of the columnar electric conductor, the definition hot ends of the thermocouples are arranged tightly attached to the insulating heat conducting layer, the outer sides of the definition hot ends of the thermocouples are additionally provided with insulating heat insulating layers, and the definition cold ends of the thermocouples are arranged on the outer sides of the insulating heat insulating layers in a bending mode.
2. The electricity taking ring according to claim 1, wherein the electricity taking ring is of a closed lantern ring structure.
3. The electricity taking ring as claimed in claim 1, wherein the electricity taking ring is a flexible ring belt which can be fixedly installed in a tightening and locking manner.
4. The power-taking ring according to claim 1, wherein a third conductor is connected to the defined hot end of the first conductor and the second conductor of each thermocouple, the third conductor is of a sheet structure, and the inner side of the third conductor is tightly attached to the insulating heat-conducting layer.
5. The electricity taking ring according to claim 1, wherein the cold ends of the first conductor and the second conductor of two adjacent thermocouples are directly connected or connected through a conductive wire.
6. The power ring according to claim 1, wherein the first and second conductors of the thermocouple are each comprised of a first axial segment, a radial segment, the second axial section is formed, an insulating layer is arranged between the first axial section and the second axial section, one end of the first axial section of the first conductor is a hot end of the first conductor, the other end of the first axial section of the first conductor is connected with the inner end of the radial section of the first conductor, the outer end of the radial section of the first conductor is connected with one end of the second axial section of the first conductor, the other end of the second axial section of the first conductor is a cold end of the first conductor, one end of the first axial section of the second conductor is a hot end of the second conductor, the other end of the first axial section of the second conductor is connected with the inner end of the radial section of the second conductor, the outer end of the radial section of the second conductor is connected with one end of the second axial section of the second conductor, and the other end of.
7. A high-voltage power grid contact temperature detection device for taking electricity by thermoelectric effect comprises:
the detection circuit comprises a temperature sensor for detecting the temperature of the power grid contact point and a detection signal processing circuit for processing a detection signal of the temperature sensor;
the wireless communication module is used for wirelessly sending the power grid junction temperature information acquired by the detection circuit to the outside;
the power supply circuit is used for supplying power to the detection circuit;
it is characterized in that the preparation method is characterized in that,
the power supply circuit comprises the power taking ring as claimed in any one of claims 1 to 6, and a rechargeable battery, a charging circuit and a voltage stabilizing circuit, wherein the input end of the charging circuit is connected with the output end of the power taking ring, the output end of the charging circuit is connected with the rechargeable battery, the output end of the power taking ring and the output end of the rechargeable battery are respectively connected with the input end of the voltage stabilizing circuit, and the output end of the voltage stabilizing circuit serving as the power supply output end of the power supply circuit is respectively connected with the detection circuit, the wireless communication module and the power supply input.
8. The device for detecting the junction temperature of the high-voltage power grid according to claim 7, wherein the electricity-taking ring is a closed ring structure with the size matched with that of a large-current pipe column, electronic components forming the detection signal processing circuit, the charging circuit and the voltage stabilizing circuit are arranged on the circuit board, the temperature sensor and the hot end of a thermocouple in the electricity-taking ring are arranged on the same layer, and the wireless communication module and the circuit board are relatively fixed with the ring.
9. The apparatus as claimed in claim 8, wherein the power-extracting ring is a flexible ring belt, and is fixedly mounted by tightening a locking device, and the circuit board is a flexible board.
10. A high-voltage power grid connection point temperature monitoring system comprises a system computer for remote monitoring, high-voltage power grid connection point temperature detection devices arranged at each high-voltage power grid connection point, and a wireless relay transceiver for receiving detection signals of a plurality of high-voltage power grid connection point temperature detection devices nearby in a wireless mode and forwarding the detection signals to the system computer, wherein the high-voltage power grid connection point temperature detection devices adopt the high-voltage power grid connection point temperature detection device of any one of claims 7 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010039166.XA CN111130394A (en) | 2020-01-14 | 2020-01-14 | Power taking ring, high-voltage power grid contact temperature detection device and monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010039166.XA CN111130394A (en) | 2020-01-14 | 2020-01-14 | Power taking ring, high-voltage power grid contact temperature detection device and monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111130394A true CN111130394A (en) | 2020-05-08 |
Family
ID=70490473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010039166.XA Pending CN111130394A (en) | 2020-01-14 | 2020-01-14 | Power taking ring, high-voltage power grid contact temperature detection device and monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111130394A (en) |
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2020
- 2020-01-14 CN CN202010039166.XA patent/CN111130394A/en active Pending
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