CN113884950A - Main transformer impulse current on-line monitoring appearance - Google Patents
Main transformer impulse current on-line monitoring appearance Download PDFInfo
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- CN113884950A CN113884950A CN202111144222.7A CN202111144222A CN113884950A CN 113884950 A CN113884950 A CN 113884950A CN 202111144222 A CN202111144222 A CN 202111144222A CN 113884950 A CN113884950 A CN 113884950A
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- inrush current
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 22
- 238000004891 communication Methods 0.000 claims description 27
- 239000000835 fiber Substances 0.000 claims description 18
- 238000009434 installation Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 2
- 230000010354 integration Effects 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 21
- 238000003780 insertion Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000011217 control strategy Methods 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 239000000805 composite resin Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/62—Testing of transformers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
Abstract
The invention relates to the technical field of transformer monitoring, and discloses a main transformer impulse current online monitor, which comprises a main transformer station terminal, a Hall sensor and a monitoring assembly, wherein the Hall sensor is connected to the main transformer station terminal; the invention has the characteristics of saving the manual judgment link of operation and maintenance personnel and facilitating the response and maintenance of the operation and maintenance personnel.
Description
Technical Field
The invention relates to the technical field of transformer monitoring, in particular to a main transformer impulse current on-line monitor.
Background
The main transformer is one of key equipment in the power system and is also a link with higher failure rate in the power equipment, and the normal operation of the main transformer is an important guarantee for the safe, reliable, high-quality and economic operation of the power system; when the main transformer breaks down and the fault point is closer to the main transformer substation, the main transformer substation can often have overlarge impact current, and cause the impact to the main transformer substation, lead to the phenomenon of tripping operation to appear in the main transformer substation, can cause the damage of certain degree to the main transformer substation when serious, therefore when the main transformer substation breaks down and trips, whether need the analysis main transformer substation's of flowing through electric current too big to the decision carries out corresponding maintenance measure to the main transformer substation.
At present, in the prior art, the magnitude of current flowing through a main transformer station is mainly analyzed by operation and maintenance personnel by recording fault current values of fault messages of corresponding protection devices for obtaining the current value flowing through the main transformer station, but the method is troublesome and labor-consuming, has the risk of artificial judgment errors, can also have the situation that the magnitude of the current flowing through the main transformer station cannot be directly analyzed when more than one power supply point exists on the main transformer station, can be measured and calculated by reading filtering by means of corresponding instruments, and is relatively inconvenient to operate; therefore, there is a need for an instrument capable of directly monitoring fault current of a main transformer station in real time on line, so that a maintenance person can quickly make a maintenance strategy.
Disclosure of Invention
In view of this, the invention provides an on-line monitor for main transformer inrush current.
In order to solve the technical problems, the technical scheme of the invention is as follows: the utility model provides a main change impulse current on-line monitoring appearance, including main transformer station terminal, still include hall sensor and monitoring subassembly, hall sensor connects on main transformer station terminal, the monitoring subassembly includes the pcb circuit board, the integration is provided with the AD converter on the pcb circuit board, single chip microcomputer controller, communication module and power module, the AD converter is in the same place with hall sensor and single chip microcomputer controller electric connection respectively, single chip microcomputer controller has external mobile intelligent terminal through communication module communication connection, power module and AD converter, single chip microcomputer controller and communication module electric connection are in the same place.
Furthermore, the single chip microcomputer controller is also in communication connection with an external cloud server through a communication module.
Further, the monitor is still including adorning in the protection casing on the main transformer station terminal, hall sensor and monitoring subassembly are all located in the protection casing, the protection casing includes first casing and second casing, the protection casing is formed by first casing and the concatenation of second casing, first casing is bottom open structure setting, first through-hole has all been seted up by its bottom position department to the both sides lateral wall of first casing, the second casing is top open structure setting, the both sides lateral wall of second casing has all been seted up the second through-hole by its top position department, when setting up of first through-hole and second through-hole satisfies first casing and second casing and splices, first through-hole and second through-hole form and become the through-hole structure that suits with main transformer station terminal structure.
Furthermore, rubber sealing strips are arranged on the hole walls of the first through hole and the second through hole.
Furthermore, all be provided with the connecting block on the week side inside wall of first casing, seted up the inserting groove on the diapire of connecting block, all be provided with the grafting piece that suits with inserting groove position shape on week side inside wall of second casing, a grafting piece corresponds an inserting groove, and when the setting up of grafting piece and inserting groove satisfied first casing and second casing and spliced, the grafting piece can insert rather than the inserting groove who corresponds in.
Furthermore, the outer side walls of the two sides of the first shell are respectively provided with a first handle, and the outer side walls of the two sides of the second shell are respectively provided with a second handle.
Furthermore, all be provided with first installation piece on the both sides lateral wall of first casing, seted up first mounting hole on the first installation piece, all be provided with the second installation piece that the position suited with first installation piece on the both sides lateral wall of second casing, a second installation piece corresponds a first installation piece, has seted up the second mounting hole on the second installation piece, and the position shape setting of second mounting hole suits with the position shape setting of first mounting hole.
Further, be equipped with the erection column on the top inner wall of first casing, the erection column is kept away from and is equipped with first tight piece of clamp on the tip of first casing bottom inner wall side, is equipped with the electro-magnet on the bottom inner wall of second casing, and the bottom of electro-magnet has connect the spring, and the spring has connect the magnetic path on keeping away from the tip of electro-magnet side, has connect the tight piece of second clamp on the magnetic path, still is equipped with the control switch who is in the same place with electro-magnet electric connection on the lateral wall of second casing.
Furthermore, the first clamping block and the second clamping block are both made of rubber materials.
Furthermore, first conductive fiber is buried in the first shell, the first conductive fiber is arranged in the first shell in a net structure, second conductive fiber is buried in the second shell, and the second conductive fiber is arranged in the second shell in a net structure.
Compared with the prior art, the invention has the advantages that:
1. the invention is provided with a Hall sensor, an A/D converter, a singlechip controller and a communication module, wherein the Hall sensor can monitor the current value of a main transformer station in real time, convert the current value obtained by monitoring into a measurable voltage value and transmit the measurable voltage value to the A/D converter, the A/D converter can convert the voltage value into a digital quantity and transmit the digital quantity to the singlechip controller, the singlechip controller can convert the digital quantity and compare the digital quantity with a self-set threshold value, a corresponding control strategy is executed according to the result, when the converted digital quantity exceeds the self-set threshold value, the singlechip controller transmits a short message to an external mobile intelligent terminal through the communication module according to the exceeding range to prompt the occurrence of a fault and the converted digital quantity at the moment, and the artificial judgment link of operation and maintenance personnel is saved, the operation and maintenance personnel can quickly judge the impact condition of the main transformer station, and the operation and maintenance personnel can conveniently respond quickly.
2. According to the invention, the first conductive fiber and the second conductive fiber are embedded in the first shell and the second shell, so that the first shell and the second shell have good electromagnetic shielding capability, and the Hall sensor and the monitoring component are arranged in the protective shell formed by splicing the first shell and the second shell, so that the electromagnetic interference generated by the main power station is not easy to influence the normal work of the Hall sensor and the monitoring component, and the reliability of the whole monitoring work is ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic block diagram of the present invention;
FIG. 2 is a schematic view of the present invention in an actual installation configuration;
FIG. 3 is a schematic view of the internal structure of the protective housing according to the present invention;
FIG. 4 is a cross-sectional view of the present invention;
FIG. 5 is an enlarged view at A;
FIG. 6 is a partial structural view of the first housing;
fig. 7 is a partial structural schematic view of the second housing.
Reference numerals: 1. a main transformer station terminal; 2. a Hall sensor; 3. a pcb circuit board; 4. an A/D converter; 5. a single chip controller; 6. a communication module; 7. a power supply module; 8. a cloud server; 9. a first housing; 10. a second housing; 11. a first through hole; 12. a second through hole; 13. a rubber seal strip; 14. connecting blocks; 15. inserting grooves; 16. an insertion block; 17. a first handle; 18. a second handle; 19. a first mounting block; 20. a first mounting hole; 21. a second mounting block; 22. a second mounting hole; 23. mounting a column; 24. a first clamping block; 25. an electromagnet; 26. a spring; 27. a magnetic block; 28. a second clamping block; 29. a first conductive fiber; 30. a second conductive fiber.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1: referring to fig. 1, the embodiment provides an online main transformer inrush current monitor, which includes a main transformer station terminal 1, a hall sensor 2 and a monitoring assembly, wherein the hall sensor 2 is connected to the main transformer station terminal 1, and according to the type of the main transformer station to be detected, if the main transformer station is a high-voltage to low-voltage type, the hall sensor 2 is connected to a low-voltage terminal of the main transformer station, and if the main transformer station is a high-voltage to medium-voltage type, the hall sensor 2 is connected to a medium-voltage terminal of the main transformer station; the monitoring assembly comprises a pcb circuit board 3, an A/D converter 4, a single chip microcomputer controller 5, a communication module 6 and a power module 7 are integrally arranged on the pcb circuit board 3, the A/D converter 4 is electrically connected with the Hall sensor 2 and the single chip microcomputer controller 5 respectively, the single chip microcomputer controller 5 is in communication connection with an external mobile intelligent terminal through the communication module 6, and the power module 7 provides a working power supply for the A/D converter 4, the single chip microcomputer controller 5 and the communication module 6; in this embodiment, the mobile intelligent terminal is an intelligent mobile phone of an operation and maintenance worker; through the arrangement, the Hall sensor 2 can monitor the current passing through the main transformer station terminal 1 in real time, convert the monitored current value into a voltage value and send the voltage value to the A/D converter 4, the A/D converter 4 can convert the voltage value into a digital quantity and send the digital quantity to the single chip microcomputer controller 5, and the single chip microcomputer controller 5 can convert the digital quantity and compare the digital quantity with a threshold value set by the single chip microcomputer controller 5 and execute a corresponding control strategy according to the result;
in this embodiment, the control strategy of the single chip microcomputer controller 5 is to preset the maximum voltage value of the main transformer station during normal operation: then, if the singlechip controller 5 obtains the voltage value sent by the A/D converter 4 after conversion and comparison and is not larger than the set maximum voltage value of the main transformer station during normal work, the singlechip controller 5 does not perform alarm work, if the singlechip controller 5 obtains the voltage value sent by the A/D converter 4 after conversion and comparison and is larger than the set maximum voltage value of the main transformer station during normal work and is not larger than the value which is 3 times of the set maximum voltage value of the main transformer station during normal work, the singlechip controller 5 sends a fault short message prompt to an external mobile intelligent terminal through the communication module 6, the converted voltage value is sent to operation and maintenance personnel, the operation and maintenance personnel is prompted to have small faults and need to perform maintenance and troubleshooting work, and if the singlechip controller 5 obtains the voltage value sent by the A/D converter 4 after conversion and comparison and is larger than the set maximum voltage value of the main transformer station during normal work When the voltage value is 3 times of the value and is not greater than the value 5 times of the maximum voltage value of the set main transformer station in normal work, the single chip microcomputer controller 5 sends a fault short message prompt to an external mobile intelligent terminal through the communication module 6, the converted voltage value is sent to operation and maintenance personnel, the operation and maintenance personnel are prompted to have large faults, comprehensive maintenance and fault removal work is needed, if the single chip microcomputer controller 5 obtains the value 5 times of the maximum voltage value of the set main transformer station in normal work after conversion and comparison, the single chip microcomputer controller 5 sends the fault short message prompt to the external mobile intelligent terminal through the communication module 6, the converted voltage value is sent to the operation and maintenance personnel, the operation and maintenance personnel are prompted to have major faults, and the maintenance and fault removal work is needed to be carried out due to shutdown.
For making things convenient for the transfer of fortune dimension personnel to data, singlechip controller 5 still communicates through communication module 6 and is connected with external cloud server 8, and singlechip controller 5 will be forwarded to cloud server 8 by the voltage value that AD converter 4 sent to through communication module 6 on, store on cloud server 8 to make things convenient for fortune dimension personnel to transfer data.
Example 2: referring to fig. 1 to 5, the embodiment provides an online main transformer inrush current monitor, which includes a protection housing installed on a main transformer station terminal 1, a hall sensor 2 and a pcb board integrated with an a/D converter 4, a single chip microcomputer controller 5, a communication module 6 and a power module 7 are all disposed in the protection housing, the protection housing includes a first housing 9 and a second housing 10, the protection housing is formed by splicing the first housing 9 and the second housing 10, and the hall sensor 2 and the pcb board integrated with the a/D converter 4, the single chip microcomputer controller 5, the communication module 6 and the power module 7 can be fixedly disposed in the first housing 9 or the second housing 10 according to actual conditions; the first conductive fibers 29 are embedded in the first shell 9, the first conductive fibers 29 are arranged in the first shell 9 in a net structure, the second conductive fibers 30 are embedded in the second shell 10, the second conductive fibers 30 are arranged in the second shell 10 in a net structure, and the first conductive fibers 29 and the second conductive fibers 30 can form an electromagnetic shielding layer, so that the first shell 9 and the second shell 10 have good electromagnetic shielding capability, and the electromagnetic interference generated by the main transformer station is prevented from affecting devices in a protective shell formed by splicing the first shell 9 and the second shell 10; in this embodiment, the first housing 9 and the second housing 10 are made of corrosion-resistant non-metallic materials, such as PVC materials or composite resin materials commonly used in the prior art, so that the first housing 9 and the second housing 10 have light weight, and are not easily affected by the main substation terminal 1 when being connected to the main substation terminal 1.
The first shell 9 is arranged in a bottom open structure, the side walls of two sides of the first shell 9 are provided with first through holes 11 near the bottom positions, the second shell 10 is arranged in a top open structure, the side walls of two sides of the second shell 10 are provided with second through holes 12 near the top positions, the arrangement of the first through holes 11 and the second through holes 12 meets the requirement that when the first shell 9 and the second shell 10 are spliced, the first through holes 11 on the first shell 9 are spliced with the second through holes 12 arranged on the second shell 10 and on the side corresponding to the first through holes, so that a through hole structure which meets the requirement that a medium-voltage terminal or a low-voltage terminal of a main transformer station passes through can be formed, and the protective shell can be arranged on the main transformer station terminal 1; simultaneously, all be equipped with rubber seal strip 13 on the pore wall of first through-hole 11 and second through-hole 12, rubber seal strip 13's setting satisfies to splice at first through-hole 11 and second through-hole 12 and form the through-hole structure, and when main transformer station's middling pressure terminal or low voltage terminal passed by this through-hole structure, rubber seal strip 13 can be in the same place with the outer wall subsides of main transformer station's middling pressure terminal or low voltage terminal to better messenger's protection casing can adorn on main transformer station terminal 1.
The inner side walls of the circumferential sides of the first shell 9 are all provided with connecting blocks 14, the connecting blocks 14 are arranged on the inner side walls of the circumferential sides of the first shell 9 and are close to the bottom position of the first shell 9, the bottom wall of the connecting blocks 14 is provided with inserting grooves 15, the inner side walls of the circumferential sides of the second shell 10 are all provided with inserting blocks 16, the inserting blocks 16 are arranged on the inner side walls of the circumferential sides of the second shell 10 and are close to the top position of the second shell 10, the position shape of the plugging block 16 is matched with the position shape of the plugging groove 15, one plugging block 16 corresponds to one plugging groove 15, the arrangement of the plugging block 16 and the plugging groove 15 meets the requirement that when the first shell 9 is spliced with the second shell 10, the plugging block 16 can be inserted into the corresponding plugging groove 15 and connected with the plugging groove 15 in an interference fit connection mode, by the arrangement of the insertion block 16 and the insertion groove 15, the connection stability when the first housing 9 and the second housing 10 are spliced can be ensured.
For the convenience is dismantled first casing 9 and second casing 10, all be equipped with the first in command 17 on the both sides lateral wall of first casing 9, all be equipped with the second in command 18 on the both sides lateral wall of second casing 10, when needing to dismantle first casing 9 and second casing 10, fortune dimension personnel's accessible is held the first in command 17 and the power is borrowed to the second in command 18, thereby can be more convenient unpack apart first casing 9 and second casing 10 along vertical direction, make plug block 16 break away from in the inserting groove 15.
The outer side walls of two sides of the first shell 9 are respectively provided with a first mounting block 19, the first mounting blocks 19 are arranged on the outer side walls of two sides of the first shell 9 and are close to the bottom position of the first shell 9, the first mounting blocks 19 are provided with first mounting holes 20 vertically penetrating through the first mounting blocks 19, the outer side walls of two sides of the second shell 10 are respectively provided with a second mounting block 21, the second mounting blocks 21 are arranged on the outer side walls of two sides of the second shell 10 and are close to the top position of the second shell 10, the second mounting blocks 21 are provided with second mounting holes 22 vertically penetrating through the second mounting blocks 21, the position arrangement of the second mounting blocks 21 is matched with the position arrangement of the first mounting blocks 19, one second mounting block 21 corresponds to one first mounting block 19, the position arrangement of the second mounting holes 22 is matched with the position arrangement of the first mounting holes 20, one second mounting hole 22 corresponds to one first mounting hole 20, when the first housing 9 and the second housing 10 are spliced, the common connecting members can be used to penetrate through the first mounting holes 20 and the second mounting holes 22 corresponding to the first mounting holes 20, and the common locking members are locked in, if the connecting members are selected to be stud bolts, the locking members are selected to be locking nuts, the stud bolts penetrate through the first mounting holes 20 and the second mounting holes 22 corresponding to the first mounting holes 20, and the locking nuts are locked in two ends of the stud bolts, so that the stud bolts are fixed, the stud bolts can connect the first mounting blocks 19 and the second mounting blocks 21 corresponding to the first mounting holes 20 and the second mounting holes 22, and the connection stability when the first housing 9 and the second housing 10 are spliced is further ensured.
The inner wall of the top of the first shell 9 is provided with a mounting column 23 which is vertically arranged downwards, the bottom of the mounting column 23 is provided with a first clamping block 24, the inner wall of the bottom of the second shell 10 is provided with an electromagnet 25, the top surface of the electromagnet 25 is provided with a spring 26 which is vertically arranged upwards, the top of the spring 26 is connected with a magnetic block 27, the top of the magnetic block 27 is connected with a second clamping block 28, the outer side wall of the first shell 9 is also provided with a control switch which is electrically connected with the electromagnet 25, the control switch is used for controlling the working state of the electromagnet 25, in order to ensure the clamping effect, the arrangement of the first clamping block 24 and the second clamping block 28 meets the requirement that the electromagnet 25 is in a closed state, when the spring 26 is in a normal compression state, the first clamping block 24 and the second clamping block 28 can be subjected to main transformer splicing to form a clamping structure with the middle part matched with the structure of a main transformer station terminal 1, so that the power station terminal 1 penetrating into the protective shell can be clamped, the protection shell can be more stably arranged on the main substation terminal 1, and in order to ensure that the first clamping block 24 and the second clamping block 28 are not easy to damage the main substation terminal 1, the first clamping block 24 and the second clamping block 28 are both made of rubber materials; when the protection shell is detached from the autonomous substation terminal 1, the electromagnet 25 is controlled to work by using the control switch, the electromagnet 25 generates magnetism to the magnetic block 27 to attract, so that the magnetic block 27 drives the first clamping block 24 to move towards the direction of extruding the spring 26, the first clamping block 24 does not play a clamping role on the main substation terminal 1, and operation and maintenance personnel can detach the protection shell from the autonomous substation terminal 1 conveniently.
When the on-line monitoring instrument is to be installed, firstly, the Hall sensor 2 is connected to the main power station terminal 1, then the electromagnet 25 is controlled to start working by using the control switch, the magnet is attracted, the spring 26 is extruded, the first clamping block 24 and the second clamping block 28 do not form a clamping structure which is adaptive to the structure of the main power station terminal 1, then the first shell 9 and the second shell 10 are spliced, the insertion block 16 is inserted into the insertion groove 15 to complete the splicing of the first shell 9 and the second shell 10, the requirement that the main power station terminal 1 passes through the through hole structure formed by splicing the first through hole 11 and the second through hole 12 is met, then the first mounting hole 20 and the second mounting hole 22 are passed through by using the connecting piece and locked into the locking piece to further fix the connection of the first shell 9 and the second shell 10, and finally the electromagnet 25 is controlled to close working by using the control switch, the magnet is not attracted, so that the first clamping block 24 and the second clamping block 28 form a clamping structure matched with the structure of the main substation terminal 1 under the action of the spring 26, the main substation terminal 1 is clamped, and the installation of the on-line monitor is completed.
In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
The above are only typical examples of the present invention, and besides, the present invention may have other embodiments, and all technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of the present invention as claimed.
Claims (10)
1. The utility model provides a main change impulse current on-line monitoring appearance, includes main transformer station terminal (1), its characterized in that: still include hall sensor (2) and monitoring subassembly, hall sensor (2) connect on main transformer station terminal (1), the monitoring subassembly includes pcb circuit board (3), the integration is provided with AD converter (4) on pcb circuit board (3), single chip microcomputer controller (5), communication module (6) and power module (7), AD converter (4) respectively with hall sensor (2) and single chip microcomputer controller (5) electric connection together, single chip microcomputer controller (5) are connected with external mobile intelligent terminal through communication module (6) communication, power module (7) and AD converter (4), single chip microcomputer controller (5) and communication module (6) electric connection together.
2. The on-line main transformer inrush current monitor according to claim 1, wherein: the single chip microcomputer controller (5) is also in communication connection with an external cloud server (8) through a communication module (6).
3. The on-line main transformer inrush current monitor according to claim 1, wherein: the monitoring instrument further comprises a protection shell arranged on the main transformer station terminal (1), the Hall sensor (2) and the monitoring component are arranged in the protection shell, the protection shell comprises a first shell (9) and a second shell (10), the protection shell is formed by splicing the first shell (9) and the second shell (10), the first shell (9) is arranged in a bottom open type structure, the side walls of the two sides of the first shell (9) are respectively provided with a first through hole (11) by the bottom position, the second shell (10) is arranged in a top open type structure, the side walls of the two sides of the second shell (10) are respectively provided with a second through hole (12) by the top position, and the arrangement of the first through hole (11) and the second through hole (12) meets the condition that the first shell (9) and the second shell (10) are spliced, the first through hole (11) and the second through hole (12) form a through hole structure which is matched with the structure of the main substation terminal (1).
4. The on-line main transformer inrush current monitor according to claim 3, wherein: and rubber sealing strips (13) are arranged on the hole walls of the first through hole (11) and the second through hole (12).
5. The on-line main transformer inrush current monitor according to claim 3, wherein: all be provided with connecting block (14) on the week side inside wall of first casing (9), inserting groove (15) have been seted up on the diapire of connecting block (14), all be provided with inserting block (16) that suit with inserting groove (15) position shape on the week side inside wall side of second casing (10), inserting block (16) correspond inserting groove (15), when setting up of inserting block (16) and inserting groove (15) satisfies first casing (9) and second casing (10) and splices, inserting block (16) can insert in inserting groove (15) rather than corresponding.
6. The on-line main transformer inrush current monitor according to claim 3, wherein: and the outer side walls of the two sides of the first shell (9) are respectively provided with a first handle (17), and the outer side walls of the two sides of the second shell (10) are respectively provided with a second handle (18).
7. The on-line main transformer inrush current monitor according to claim 3, wherein: all be provided with first installation piece (19) on the both sides lateral wall of first casing (9), seted up first mounting hole (20) on first installation piece (19), all be provided with position and the second installation piece (21) that first installation piece (19) suited on the both sides lateral wall of second casing (10), a second installation piece (21) corresponds a first installation piece (19), seted up second mounting hole (22) on second installation piece (21), the position shape setting of second mounting hole (22) suits with the position shape setting of first mounting hole (20).
8. The on-line main transformer inrush current monitor according to claim 3, wherein: be equipped with erection column (23) on the top inner wall of first casing (9), be equipped with first tight piece (24) of clamp on the tip that first casing (9) bottom inner wall side was kept away from in erection column (23), be equipped with electro-magnet (25) on the bottom inner wall of second casing (10), spring (26) have been connect to the bottom of electro-magnet (25), it has magnetic path (27) to connect on the tip that electro-magnet (25) side was kept away from in spring (26), it has tight piece (28) of second clamp to connect on magnetic path (27), still be equipped with the control switch together with electro-magnet (25) electric connection on the lateral wall of second casing (10).
9. The on-line main transformer inrush current monitor according to claim 8, wherein: the first clamping block (24) and the second clamping block (28) are made of rubber materials.
10. The on-line main transformer inrush current monitor according to claim 9, wherein: first conductive fiber (29) are buried in the first shell (9), the first conductive fiber (29) is arranged in a net structure in the first shell (9), second conductive fiber (30) is buried in the second shell (10), and the second conductive fiber (30) is arranged in a net structure in the second shell (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111144222.7A CN113884950A (en) | 2021-09-28 | 2021-09-28 | Main transformer impulse current on-line monitoring appearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111144222.7A CN113884950A (en) | 2021-09-28 | 2021-09-28 | Main transformer impulse current on-line monitoring appearance |
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| Publication Number | Publication Date |
|---|---|
| CN113884950A true CN113884950A (en) | 2022-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111144222.7A Pending CN113884950A (en) | 2021-09-28 | 2021-09-28 | Main transformer impulse current on-line monitoring appearance |
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| CN (1) | CN113884950A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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