CN112490865A - Electric heating dehumidification device for transformer substation grounding pile lock - Google Patents
Electric heating dehumidification device for transformer substation grounding pile lock Download PDFInfo
- Publication number
- CN112490865A CN112490865A CN202011447066.7A CN202011447066A CN112490865A CN 112490865 A CN112490865 A CN 112490865A CN 202011447066 A CN202011447066 A CN 202011447066A CN 112490865 A CN112490865 A CN 112490865A
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- Prior art keywords
- electric heating
- heating element
- grounding pile
- lock
- module
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- 238000005485 electric heating Methods 0.000 title claims abstract description 65
- 238000007791 dehumidification Methods 0.000 title claims abstract description 22
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 4
- 239000004917 carbon fiber Substances 0.000 claims description 4
- 229910021389 graphene Inorganic materials 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical group C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
- 238000010248 power generation Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 238000005192 partition Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000009422 external insulation Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/24—Circuit arrangements for boards or switchyards
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/56—Cooling; Ventilation
- H02B1/565—Cooling; Ventilation for cabinets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B5/00—Non-enclosed substations; Substations with enclosed and non-enclosed equipment
- H02B5/01—Earthing arrangements, e.g. earthing rods
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention provides an electric heating dehumidification device for a transformer substation grounding pile lock, which comprises a rain cover, a humidity sensor, an electric heating element, a storage battery, a circuit board and a solar panel, wherein the rain cover is fixedly arranged on the grounding pile lock when in use; the circuit board is provided with a singlechip module, an electric heating element power on-off control module and a power conversion module; the single chip microcomputer module is electrically connected with the humidity sensor, the electric heating element power supply on-off control module is electrically connected with the single chip microcomputer module, and the electric heating element is electrically connected with the electric heating element power supply on-off control module; the power conversion module is electrically connected with the storage battery, and the storage battery is electrically connected with the solar cell panel. When the grounding pile lock is used, the humidity in the grounding pile lock of the transformer substation can be timely and automatically removed, and the technical problem that the direct-current grounding fault of the grounding pile lock is easily caused by the humidity in the grounding pile lock is effectively solved.
Description
Technical Field
The invention relates to the technical field of transformer substation anti-misoperation auxiliary facilities, in particular to an electric heating dehumidification device for a transformer substation grounding pile lock.
Background
The transformer substation grounding pile lock is an important auxiliary facility for preventing the grounding pile from being grounded mistakenly, generally comprises a shell and electrical components including a false-proof logic device, a locking loop, a remote signaling loop and the like, and is arranged in the shell, and the grounding pile lock is connected to a direct current feeder screen and is positioned on a branch of a total station direct current loop of the transformer substation. The transformer substation grounding pile lock is generally arranged at a position close to the ground. When the transformer substation grounding pile lock is used, if a direct-current grounding fault occurs, total-station direct-current grounding of the transformer substation can be caused, false alarm signals and protection misoperation and refusal of the transformer substation and voltage loss of a direct-current feeder switch tripping protection device can be caused, some relays can be in short circuit connection, and action tripping cannot be caused, so that override tripping is caused, accidents are enlarged, and life safety of operators in the maintenance process and safe and stable operation of the whole power grid in the power transmission process after maintenance are endangered. The main reasons for causing the direct-current grounding fault of the transformer substation grounding pile lock are as follows: firstly, the grounding pile lock is subjected to rain or damp, so that the inside of the grounding pile lock is wet, and a circuit device inside the grounding pile lock is in a wet environment for a long time, so that the external insulation performance is reduced, and a direct grounding fault is caused; secondly, the electric wire inside the grounding pile lock is lapped on the shell; thirdly, the wire core inside the grounding pile lock is in short circuit; fourthly, the grounding pile locks the internal fault. The primary reason for direct-current grounding fault of the grounding pile lock of the transformer substation is that the grounding pile lock of the transformer substation is subjected to rain seepage or damp. For solving this problem, the current practice is to install rain-proof cover additional in the outside of ground connection stake lock, it is though can solve ground connection stake lock direct current ground fault problem that ground connection stake lock casing infiltration caused betterly, but because ground connection stake lock inner space is less and relatively closed, be difficult to the self evaporation away after high humid gas invades ground connection stake lock inside, transformer substation's ground connection stake lock direct current ground fault salvagees statistics and shows, ground connection stake lock direct current ground fault that leads to because of the air humidity in the ground connection stake lock accounts for the relative altitude and reaches more than 87.8%, be the leading cause of transformer substation's ground connection stake lock direct current ground fault, also be the technical problem who waits to solve urgently.
Disclosure of Invention
The purpose of the invention is: to the problem that exists among the prior art, provide an electric heat dehydrating unit of transformer substation's ground connection stake lock, it can in time get rid of the humidity in the transformer substation's ground connection stake lock when using, effectively solve because of the interior humidity of ground connection stake lock easily arouses ground connection stake lock direct current earth fault's technical problem.
The technical scheme of the invention is as follows: the invention relates to an electric heating dehumidification device for a transformer substation grounding pile lock, which comprises a rain cover, wherein a fixed cover is arranged on the grounding pile lock when in use, and the electric heating dehumidification device is structurally characterized in that: the solar energy electric power generation device also comprises a humidity sensor and an electric heating element which are fixedly arranged on the inner wall of a shell of the grounding pile lock, a storage battery and a circuit board which are fixedly arranged on the inner wall of the rain cover, and a solar cell panel which is fixedly arranged near the outside of the grounding pile lock and the rain cover and is used for generating electricity; the circuit board is provided with a singlechip module for master control, an electric heating element power on-off control module for correspondingly controlling the on-off of the power supply of the electric heating element according to the instruction of the singlechip module, and a power supply conversion module for converting the power supply output by the storage battery into a working power supply required by the singlechip module and the electric heating element; the single chip microcomputer module is electrically connected with the humidity sensor, the electric heating element power supply on-off control module is electrically connected with the single chip microcomputer module, and the electric heating element is electrically connected with the electric heating element power supply on-off control module; the power conversion module is electrically connected with the storage battery, and the storage battery is electrically connected with the solar cell panel.
The further scheme is as follows: the circuit board is also provided with a display screen for displaying the current humidity and the set humidity threshold value when in use, and 2 humidity threshold value adjusting buttons for adjusting the set humidity threshold value; the display screen and the 2 humidity threshold adjusting buttons are respectively and electrically connected with the single chip microcomputer module.
The further scheme is as follows: an intermediate partition plate is arranged in the rain cover and is arranged between the storage battery and the ground pile lock and between the circuit board and the ground pile lock.
The further scheme is as follows: the electric heating element is a carbon fiber graphene electric heating film.
The further scheme is as follows: the humidity sensor is a DHT11 capacitive humidity sensor.
The invention has the positive effects that: (1) according to the electric heating dehumidification device for the transformer substation grounding pile lock, due to the design of an integral structure, when the electric heating dehumidification device is used, except for rain shielding and moisture prevention, more importantly, the electric heating dehumidification can be automatically carried out in the grounding pile lock, and the air humidity in the grounding pile lock is ensured to be smaller than a set humidity threshold value, so that the technical problem that direct-current grounding faults are easily caused due to the fact that the grounding pile lock is wet in the prior art is effectively solved, and the direct-current grounding faults of the grounding pile lock can be greatly reduced when the electric heating dehumidification device is used. (2) The electric heating dehumidification device for the transformer substation grounding pile lock can normally work for 5 days even in the sunless weather, and is high in applicability. (3) According to the electric heating dehumidification device for the transformer substation grounding pile lock, the electric heating element is a carbon fiber graphene electric heating film which is small in overall size, large in heat dissipation area, high in heat conduction speed and capable of being slightly folded, and the installation and use environment in the grounding pile lock can be effectively adapted. (5) The electric heating dehumidification device for the transformer substation grounding pile lock is simple in overall structure, low in cost, obvious in effect and suitable for large-scale popularization.
Drawings
Fig. 1 is a schematic overall structure diagram of the present invention, which also schematically shows the installation relationship of the ground pile lock and the rain shield, and the rain shield is longitudinally cut from the front end thereof;
fig. 2 is a schematic block diagram of the circuit structure of the present invention.
The reference numbers in the above figures are as follows:
a rain cover 1 and a middle clapboard 1-1; the device comprises a humidity sensor 2, an electric heating element 3, a solar cell panel 4, a storage battery 5, a circuit board 6, a display screen 7 and a humidity threshold value adjusting button 8;
a grounding pile lock 9, a shell 9-1 and an electrical component 9-2.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
(example 1)
The transformer substation grounding pile lock electric heating dehumidification device of this embodiment, it is used for locking the rain-proof of portion and a dehumidification to transformer substation grounding pile to try to furthest reduce transformer substation grounding pile lock direct current ground fault.
Referring to fig. 1, the ground stake lock 9 is mainly composed of a housing 9-1 and an electrical component 9-2 disposed in the housing. The structure of the grounding pile lock 9 is the same as that of the prior art and is not described in detail.
Referring to fig. 1 and 2, the electric heating dehumidification device for the transformer substation grounding pile lock of the embodiment mainly comprises a rain cover 1, a humidity sensor 2, an electric heating element 3, a solar cell panel 4, a storage battery 5, a circuit board 6, a display screen 7 and a humidity threshold value adjusting button 8.
Rain-proof cover 1 is lower extreme open-ended square box spare, and the volume of rain-proof cover 1 is greater than the volume of ground connection stake lock 9, and rain-proof cover 1 fixed cover is located on ground connection stake lock 9. Rain-proof cover 1 is used for ground connection stake lock 9 from the outside rain-proof to avoid in the rainwater infiltration ground connection stake lock 9. The rain cover 1 is the prior art and will not be described in detail. However, in the present embodiment, unlike the prior art, an intermediate partition plate 1-1 is further provided in the rain-proof cover 1 to isolate the battery 5 and the circuit board 6 from the ground stud lock 9 in the apparatus of the present embodiment, so as to avoid electromagnetic interference.
The humidity sensor 2 and the electric heating element 3 are fixedly arranged on the inner wall of the shell 9-1 of the grounding pile lock 9. When the grounding pile lock 9 is used, the humidity sensor 2 is used for detecting the humidity in the housing 9-1 of the grounding pile lock 9 in real time, the humidity sensor 2 can be a commercially available AM2320 digital temperature and humidity sensor or a DHT11 capacitive humidity sensor, and in this embodiment, from the cost perspective, a DHT11 capacitive humidity sensor is preferably used. The electric heating element 3 is used for heating and dehumidifying humid air in the shell 9-1 of the ground pile lock 9, the electric heating element 3 can adopt common electric heating devices such as resistance wires, and in the embodiment, the electric heating element 3 preferably adopts a commercially available carbon fiber graphene electric heating film which is small in overall size, large in heat dissipation area, high in heat conduction speed and capable of being slightly folded so as to be convenient for installation.
Solar cell panel 4 and battery 5 are the market and purchase the piece, and solar cell panel 4 utilizes solar energy power generation and transmits for battery 5 storage electric energy, and solar cell panel 4 and battery 5 combination storage electric energy are ripe prior art, do not describe in detail. Solar cell panel 4 is fixed to be located ground connection stake lock 9 and rain-proof cover 1 outside near, and battery 5 is fixed to be located on the inside wall body of rain-proof cover 1, and battery 5 is used for providing the working power supply of this device.
The circuit board 6 is fixedly arranged on the inner wall body of the rain cover 1, and the circuit board 6 is provided with a single chip microcomputer module, an electric heating element power on-off control module and a power conversion module; the single chip microcomputer module is preferably formed by a single chip microcomputer of STM32 type, a humidity judgment threshold is arranged in the single chip microcomputer module, and in the embodiment, the humidity threshold is set to be 80% RH. The power on-off control module of the electric heating element is electrically connected with the single chip microcomputer module, the single chip microcomputer module is electrically connected with the humidity sensor 2, and the electric heating element 3 is electrically connected with the power on-off control module of the electric heating element; the power conversion module is used for converting the power output by the storage battery 5 into the power required by the single chip microcomputer module and the electric heating element 3, and the power conversion module is mature in the prior art and the structure of the power conversion module is not described in detail. The power on-off control module of the electric heating element can adopt a commercially available relay or an MOS tube switching circuit.
A display screen 7 and a humidity threshold value adjusting button 8 are set as a preferable mode; the display screen 7 and the humidity threshold value adjusting button 8 are fixedly arranged on the circuit board 6, the display screen 7 and the humidity threshold value adjusting button 8 are respectively and electrically connected with the single chip microcomputer module, and the display screen 7 is an OLED display screen which is commercially available and is used for displaying the current humidity and the set humidity threshold value; humidity threshold value adjustment button 8 is equipped with 2 for rise and reduce the humidity threshold value of settlement, in order to adapt to the different operating mode when using, and humidity threshold value adjustment button 8 adjusts the step length and sets up to 1% RH.
The middle partition plate 1-1 is preferably arranged in the rain cover 1, and the middle partition plate 1-1 is arranged between the storage battery 5 and the circuit board 6 and the grounding pile lock 9, so as to isolate the storage battery 5 and the circuit board 6 from the grounding pile lock 9 in the device of the embodiment, so as to avoid electromagnetic interference.
The electric heating dehumidification device for the transformer substation grounding pile lock is simple in working principle and process as follows:
when the electric heating dehumidification device for the transformer substation grounding pile lock is used, the power generated by the solar panel 4 is stored by the storage battery 5, and the storage battery 5 provides a working power supply for the device; when the grounding pile lock 9-1 works, the humidity sensor 2 detects the humidity in the shell 9-1 of the grounding pile lock in real time and transmits a detection signal to the singlechip module on the circuit board 6, the singlechip module compares the real-time humidity with a built-in set humidity threshold value, if the real-time detected humidity reaches the set humidity threshold value, the singlechip module controls the on-off control module of the power supply of the electric heating element to act, the power supply of the electric heating element 3 is switched on, the electric heating element 3 heats and dehumidifies the humid air in the shell 9-1 of the grounding pile lock 9 through heat generation, when the humidity detected by the humidity sensor 2 in real time is less than the humidity threshold value, the singlechip module controls the on-off control module of the power supply of the electric heating element 3 to act, the power supply of the electric heating element 3 is switched off to stop heating, and the operation is repeated, therefore, the technical problem that direct current grounding faults are easily caused due to the fact that moisture exists in the grounding pile lock in the prior art can be effectively solved. The following are specifically mentioned: the built-in program of the single chip microcomputer module is simple and mature in the prior art. The device of the embodiment can normally work for 5 days even in the absence of the sun, and can reduce the humidity in the shell 9-1 of the grounding pile lock 9 to be below 80% RH, thereby basically meeting the actual use working conditions.
The above embodiments are illustrative of specific embodiments of the present invention, and are not restrictive of the present invention, and those skilled in the relevant art can make various changes and modifications without departing from the spirit and scope of the present invention to obtain corresponding equivalent technical solutions, and therefore all equivalent technical solutions should be included in the scope of the present invention.
Claims (5)
1. The utility model provides a transformer substation's ground stake lock electric heat dehydrating unit, the rain-proof cover on the ground stake lock is located to the fixed cover when using, its characterized in that: the solar energy electric power generation device also comprises a humidity sensor and an electric heating element which are fixedly arranged on the inner wall of a shell of the grounding pile lock, a storage battery and a circuit board which are fixedly arranged on the inner wall of the rain cover, and a solar cell panel which is fixedly arranged near the outside of the grounding pile lock and the rain cover and is used for generating electricity; the circuit board is provided with a singlechip module for master control, an electric heating element power on-off control module for correspondingly controlling the on-off of the power supply of the electric heating element according to the instruction of the singlechip module, and a power supply conversion module for converting the power supply output by the storage battery into a working power supply required by the singlechip module and the electric heating element; the single chip microcomputer module is electrically connected with the humidity sensor, the electric heating element power supply on-off control module is electrically connected with the single chip microcomputer module, and the electric heating element is electrically connected with the electric heating element power supply on-off control module; the power conversion module is electrically connected with the storage battery, and the storage battery is electrically connected with the solar cell panel.
2. The substation grounding pile lock electric heating dehumidification device of claim 1, characterized in that: the circuit board is also provided with a display screen for displaying the current humidity and the set humidity threshold value when in use, and 2 humidity threshold value adjusting buttons for adjusting the set humidity threshold value; the display screen and the 2 humidity threshold adjusting buttons are respectively and electrically connected with the single chip microcomputer module.
3. The substation grounding pile lock electric heating dehumidification device of claim 1, characterized in that: be equipped with intermediate bottom in the rain-proof cover, intermediate bottom locates between battery and circuit board and ground connection stake lock.
4. An electric heating dehumidification device for a transformer substation grounding pile lock according to any one of claims 1 to 3, characterized in that: the electric heating element is a carbon fiber graphene electric heating film.
5. An electric heating dehumidification device for a transformer substation grounding pile lock according to any one of claims 1 to 3, characterized in that: the humidity sensor is a DHT11 capacitive humidity sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011447066.7A CN112490865A (en) | 2020-12-09 | 2020-12-09 | Electric heating dehumidification device for transformer substation grounding pile lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011447066.7A CN112490865A (en) | 2020-12-09 | 2020-12-09 | Electric heating dehumidification device for transformer substation grounding pile lock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112490865A true CN112490865A (en) | 2021-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011447066.7A Pending CN112490865A (en) | 2020-12-09 | 2020-12-09 | Electric heating dehumidification device for transformer substation grounding pile lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112490865A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104571228A (en) * | 2013-10-27 | 2015-04-29 | 陕西亚泰电器科技有限公司 | Greenhouse temperature and humidity control system based on solar energy |
| CN204497643U (en) * | 2015-04-23 | 2015-07-22 | 国家电网公司 | A kind of box-type substation |
| CN214337153U (en) * | 2020-12-09 | 2021-10-01 | 国网江苏省电力有限公司常州供电分公司 | Electric heating dehumidification device for transformer substation grounding pile lock |
-
2020
- 2020-12-09 CN CN202011447066.7A patent/CN112490865A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104571228A (en) * | 2013-10-27 | 2015-04-29 | 陕西亚泰电器科技有限公司 | Greenhouse temperature and humidity control system based on solar energy |
| CN204497643U (en) * | 2015-04-23 | 2015-07-22 | 国家电网公司 | A kind of box-type substation |
| CN214337153U (en) * | 2020-12-09 | 2021-10-01 | 国网江苏省电力有限公司常州供电分公司 | Electric heating dehumidification device for transformer substation grounding pile lock |
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