CN112087059B - Online detection device and detection method for closing state of automatic ground wire ice melting wiring device - Google Patents
Online detection device and detection method for closing state of automatic ground wire ice melting wiring device Download PDFInfo
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- CN112087059B CN112087059B CN202011052170.6A CN202011052170A CN112087059B CN 112087059 B CN112087059 B CN 112087059B CN 202011052170 A CN202011052170 A CN 202011052170A CN 112087059 B CN112087059 B CN 112087059B
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- 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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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- 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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00022—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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Abstract
The invention discloses an on-line detection device and a detection method for the closing state of an automatic ground wire ice melting wiring device, wherein the on-line detection device comprises a conductive rod, a suspension assembly, an in-place sensor, a moving contact, a drainage conductor, a protective cover, a static contact and a stop block, the conductive rod is an aluminum alloy circular tube conductive rod, the drainage conductor is fixedly installed at the tail end of one side of the conductive rod, the moving contact is fixedly connected to one end, far away from the conductive rod, of the drainage conductor, and the suspension assembly is fixedly connected to the conductive rod; the sensor of the scheme of the invention adopts a mode of combining the built-in battery and wireless transmission, additional wiring and power supply on an iron tower are not needed, and the mounting position is flexible; the in-place sensor has good sealing performance and high protection level, the shell is shielded by using a metal material, the influence of the weather environment and electromagnetic interference is avoided, and the service life is long; the in-place closing detection method adopted by the scheme directly acts on the closing position, and the accuracy is high.
Description
Technical Field
The invention belongs to the technical field of on-line detection of a closing state of an automatic wiring device, and particularly relates to an on-line detection device of a closing state of an automatic wiring device for ground wire deicing. Meanwhile, the invention also relates to a detection method of the on-line detection device for the closing state of the automatic wiring device for ground wire ice melting.
Background
The existing automatic wiring device for ground wire ice melting of the transmission line is used for detecting in-place closing, wherein when a conducting rod is subjected to in-place closing force to generate torque, and after the torque value reaches a set value of a torque limiter of a motor, the torque limiter is separated, and a proximity switch senses the separation distance, so that a signal of in-place closing is sent. In actual use, most conditions can accurately judge the switching-on position and transmit a signal to the control box, but due to the fact that the mode is indirect judgment conducted from the motor end, when the switching-on is not in place, the conductive rod can generate large torque, when wind power is applied, a contact of the conductive rod touches the protective cover, a contact finger on the side of the junction clamp is covered by ice and snow, and the like, the approach switch can falsely report the switching-on to be in place. In addition, the outdoor environment of the installation of the proximity switch faces severe operating conditions such as high voltage, high electromagnetism and the like caused by nearby high-voltage lines all the time, and in addition, due to the influence of other factors such as rain, snow, salt mist, wind, sand, high-low temperature alternation and the like, the service life of the proximity switch is seriously shortened, and occasionally, the motor cannot be stopped timely due to failure of the acquisition state, so that the ground wire ice melting automatic wiring device or the lines are damaged.
The existing distance sensing equipment such as a photoelectric sensor, an ultrasonic sensor and the like is similar to a metal proximity switch, is mostly suitable for indoor environment, is not enough in protection grade, and is not suitable for state detection of the device because the shielding design specially aiming at high voltage and high electromagnetism is not adopted. In addition, if a pressure sensor is adopted, the sensor needs to be directly arranged at a high-voltage end, and hundreds of thousands of volts are applied daily, so that the sensor is easily electrically damaged.
Therefore, a brand new online detection method and a detection device for the closing state of the automatic ground wire ice melting wiring device need to be provided to improve the accuracy of in-place closing detection.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides the on-line detection device for the closing state of the automatic wiring device for the ground wire deicing.
In order to achieve the purpose, the invention provides the following technical scheme:
the on-line detection device for the closing state of the ground wire ice melting automatic wiring device comprises a conductive rod, a suspension assembly, an in-place sensor, a moving contact, a drainage conductor, a protective cover, a static contact and a stop block, wherein the conductive rod is an aluminum alloy circular tube conductive rod, the drainage conductor is fixedly installed at the tail end of one side of the conductive rod, the moving contact is fixedly connected to one end, far away from the conductive rod, of the drainage conductor, the suspension assembly is fixedly connected to the conductive rod, and the in-place sensor is fixedly installed on the conductive rod through a bolt and is located between the drainage conductor and the suspension assembly;
the static contact and the stop block are fixedly arranged in the protective cover, the static contact consists of four copper elastic contact fingers, the static contact is fixedly arranged on two sides of the stop block in a symmetrical opening shape, the stop block is connected and arranged on the inner side wall of the protective cover through a bolt, and the stop block is used for limiting the moving contact when the moving contact is switched on in place;
the in-place sensor comprises an acquisition component and a control component;
the collecting assembly comprises a guide sliding block, a guide sleeve, a magnet, a spring, a Hall sensor, a guide base and a first hoop, wherein the guide base is made of aluminum alloy materials, one side of the guide base is provided with a plane with a through hole, the other side of the guide base is provided with an external thread structure, one side of the plane with the through hole of the guide base is fixedly connected with the first hoop through a bolt, and one side of the external thread structure of the guide base is fixedly connected with the guide sleeve which is made of aluminum alloy materials and has a matched internal thread structure;
the guide base and the guide sleeve form an internal independent space for placing a guide sliding block, a magnet, a spring and a Hall sensor, a step hole is formed in the bottom of the guide base, the Hall sensor is bonded in the step hole, an electric connecting wire of the Hall sensor extends to the outside through the step hole, the guide sliding block slides on the inner wall of the guide sleeve through a compression spring, the compression spring is a non-magnetic stainless steel spring, the bottom surface of one end of the compression spring is abutted against a shaft shoulder on one side of the guide sliding block with the groove, and the ground of the other end of the compression spring is abutted against the bottom of the guide base;
the control assembly comprises a second hoop, a PCB, a lithium battery, a sealing cover, a protective shell and a flat antenna, the protective shell is a cylindrical protective shell made of stainless steel, the lithium battery is mounted inside the protective shell, the flat antenna is attached to the bottom of the protective shell, the sealing cover is sleeved on the protective shell and clamps the flat antenna between the protective shell and the sealing cover, a group of circular holes are formed in the center of the bottom of the protective shell and used for penetrating through an electric connecting line between the flat antenna and the PCB, and an electric connector of the Hall sensor extends to the outside and is electrically connected to the PCB;
the PCB board is used for gathering hall sensor's trigger signal, the PCB board includes MCU, battery power acquisition circuit, switching value input detection circuitry and LORA terminal module.
Preferably, one end of the drainage conductor is fixedly connected with a hoop structure, and the drainage conductor is fixedly installed on the conducting rod through the hoop structure.
Preferably, the direction slider sets up to polytetrafluoroethylene direction slider, and the whole stepped shaft structure that sets up of direction slider, the middle diameter of axle of direction slider is greater than both sides, and direction slider one side end is the hemisphere, and direction slider opposite side has the circular recess that is used for bonding magnet, magnet sets up to have the neodymium iron boron system permanent magnet of strong magnetism.
Preferably, a first fixed seat with a threaded hole is welded and fixed to the top of the arc structure of the first hoop, the first fixed seat is used for installing a guide base, and a long straight groove is formed in the center of the top of the first fixed seat;
the arc structure top welded fastening of second staple bolt has the second fixing base of threaded hole, the second fixing base is used for using bolt installation protective housing, two sets of double-screw bolts have still been welded at the second fixing base top of second staple bolt, the PCB board is through two sets of double-screw bolt cooperation nut fixed mounting on the second fixing base, the top centre of second fixing base also is provided with long straight flute.
Preferably, the stepped hole at the bottom of the guide base is provided with two stepped holes, and the hole with the larger diameter of the stepped hole is used for bonding the Hall sensor;
the hole with the smaller diameter of the step hole, the long straight groove of the first fixing seat and the long straight groove of the second fixing seat are used for penetrating through an electric connecting wire of the Hall sensor.
Preferably, the first hoop is made of aluminum alloy material, and two groups of round holes are respectively arranged on two sides of the bottom plane of the first hoop;
the second hoop is made of cast iron materials, two groups of through holes are formed in two sides of the bottom plane of the second hoop, and the first hoop and the second hoop are fixedly mounted on the conducting rod through four groups of bolt locking.
The invention also provides a detection method of the on-line detection device for the closing state of the automatic ground wire ice melting wiring device, which comprises the following steps:
s1, the Hall sensor transmits DI signals to the switching value input detection circuit, the MCU controls the LORA terminal module to communicate with the receiving gateway through the LORA, and the battery electric quantity acquisition circuit is responsible for detecting electric quantity information of the lithium battery and transmitting the electric quantity information to the receiving gateway;
s2, when the automatic ground wire ice-melting wiring device is switched on, the conducting rod rotates, so that the current-guiding conductor arranged at the tail end of the conducting rod drives the moving contact to gradually approach the static contact, and the moving contact is contacted with the static contact and continues to move until the moving contact touches the stop block;
s3, the guiding slide block of the in-place sensor touches the front end flat plate of the protective cover, the spring is compressed by the action of force, the magnet is enabled to gradually approach the Hall sensor, when the moving contact is 2-3mm away from the stop block, the Hall sensor is enabled to detect enough magnetic field intensity, a closing in-place signal is transmitted to the control assembly at the rear end of the in-place sensor, and then the closing in-place signal is transmitted to the receiving gateway under the iron tower through the transmission of the LORA terminal module.
Preferably, the LORA terminal module is set to be a 470MHzLORA terminal module, and the MCU is set to be an MCU controller of STM32F103C8T6 model.
The invention has the technical effects and advantages that: the invention provides an on-line detection device and a detection method for the closing state of an automatic ground wire ice melting wiring device,
1. the sensor of the scheme of the invention adopts a mode of combining the built-in battery and wireless transmission, additional wiring and power supply on an iron tower are not needed, and the mounting position is flexible;
2. the in-place sensor has good sealing performance and high protection level, the shell is shielded by using a metal material, the influence of the weather environment and electromagnetic interference is avoided, and the service life is long;
3. the in-place closing detection method adopted by the scheme directly acts on the closing position, and the accuracy is high.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
FIG. 1 is a schematic structural diagram of an in-place sensor arrangement and a closing process of the automatic ground wire ice melting wiring device of the present invention;
FIG. 2 is a schematic view of the overall structure of the in-place sensor of the present invention;
FIG. 3 is a second schematic structural view of the in-place sensor of the present invention;
fig. 4 is a schematic structural diagram of the closing in-place signal acquisition and transmission of the automatic ground wire ice melting wiring device of the invention.
In the figure: 1. a conductive rod; 2. a suspension assembly; 3. an in-position sensor; 4. a moving contact; 5. a current-conducting conductor; 6. a protective cover; 7. static contact; 8. a stopper; 31. a collection assembly; 32. a control component; 311. a guide slider; 312. a guide sleeve; 313. a magnet; 314. a spring; 315. a Hall sensor; 316. a guide base; 317. a first hoop; 321. a second hoop; 322. a PCB board; 323. a lithium battery; 324. a sealing cover; 325. a protective shell; 326. a flat antenna; 3221. MCU; 3222. a battery power acquisition circuit; 3223. a switching value input detection circuit; 3224. LORA terminal module.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. 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.
Examples
The on-line detection device for the closing state of the automatic ground wire ice melting wiring device comprises a conductive rod 1, a suspension component 2, an in-place sensor 3, a moving contact 4, a drainage conductor 5, a protective cover 6, a static contact 7 and a stop block 8,
as shown in fig. 1, a conductive rod 1 is an aluminum alloy circular tube conductive rod, a drainage conductor 5 is fixedly installed at the tail end of one side of the conductive rod 1, a moving contact 4 is fixedly connected to one end of the drainage conductor 5 far away from the conductive rod 1, a suspension assembly 2 is fixedly connected to the conductive rod 1, and an in-place sensor 3 is fixedly installed on the conductive rod 1 and located between the drainage conductor 5 and the suspension assembly 2 through a bolt;
the static contact 7 and the stop block 8 are fixedly arranged inside the protective cover 6, the static contact 7 is composed of four copper elastic contact fingers, the static contact 7 is fixedly arranged on two sides of the stop block 8 in a symmetrical opening shape, the stop block 8 is arranged on the inner side wall of the protective cover 6 through bolt connection, and the stop block 8 is used for limiting the moving contact 4 when the moving contact is closed in place;
as shown in fig. 1 and 2, the in-position sensor 3 includes an acquisition component 31 and a control component 32;
as shown in fig. 2, the collecting assembly 31 includes a guiding slider 311, a guiding sleeve 312, a magnet 313, a spring 314, a hall sensor 315, a guiding base 316 and a first anchor ear 317, wherein the guiding base 316 is a guiding base made of an aluminum alloy material, one side of the guiding base 316 is a plane with a through hole, the other side of the guiding base 316 is an external thread structure, one side of the plane with the through hole of the guiding base 316 is fixedly connected with the first anchor ear 317 through a bolt, and one side of the external thread structure of the guiding base 316 is fixedly connected with the guiding sleeve 312 which is made of an aluminum alloy material and has a matched internal thread structure;
an inner independent space for placing the guide slider 311, the magnet 313, the spring 314 and the hall sensor 315 is formed by the guide base 316 and the guide sleeve 312, a step hole is formed in the bottom of the guide base 316, the hall sensor 315 is bonded in the step hole, an electric connecting line of the hall sensor 315 extends to the outside through the step hole, the guide slider 311 slides on the inner wall of the guide sleeve 312 through the compression spring 314, the compression spring 314 is a non-magnetic stainless steel spring, the bottom surface of one end of the compression spring 314 is abutted against a shaft shoulder on one side of the guide slider 311 with the groove, and the ground of the other end of the compression spring 314 is abutted against the bottom of the guide base 316;
as shown in fig. 2, the control assembly 32 includes a second anchor ear 321, a PCB 322, a lithium battery 323, a sealing cover 324, a protective shell 325 and a flat antenna 326, the protective shell 325 is a cylindrical protective shell made of stainless steel, the lithium battery 323 is installed inside the protective shell 325, the flat antenna 326 is attached to the bottom of the protective shell 325, the sealing cover 324 is installed on the protective shell 325 in a sleeved manner and clamps the flat antenna 326 between the protective shell 325 and the sealing cover 324, a set of circular holes is formed in the center of the bottom of the protective shell 325 and used for passing through an electrical connection line between the flat antenna 326 and the PCB 322, and an electrical connector of the hall sensor 315 extends to the outside and is electrically connected to the PCB 322;
further, in order to ensure precise fit of the contact surface, the mounting surface of the protective shell 325 is coated with waterproof glue;
further, the sealing cover 324 is made of plastic with high insulating property, the gap between the sealing cover 324 and the protective shell 325 is filled with silicone, all the wire holes of the hall sensor 315 are also filled with silicone, and the inner cavity of the control assembly 32 formed thereby is a completely sealed space.
Further, the lithium battery 323 adopts an ER34615 lithium sub-battery, has the output voltage of DC3.6V and the capacity of 13000mAH, and supplies power for all electric elements of the in-place sensor 3. In general, the hall sensor 315 and the MCU3221 are set to a sleep mode, the power consumption of the whole circuit does not exceed 20uA in the sleep mode, and when the magnet 313 approaches, the signal of the hall sensor 315 is inverted, and the MCU3221 is awakened to operate. In this low power mode of operation, the in-position sensor 3 can theoretically stand by for about 720 days.
The PCB 322 is used to collect a trigger signal of the hall sensor 315, and the PCB 322 includes a MCU3221, a battery power collecting circuit 3222, a switching value input detecting circuit 3223, and a LORA terminal module 3224.
One end of the drainage conductor 5 is fixedly connected with a hoop structure, and the drainage conductor 5 is fixedly installed on the conducting rod 1 through the hoop structure.
The direction slider 311 sets up to polytetrafluoroethylene direction slider, and the whole stepped shaft structure that sets up of direction slider 311, and the middle diameter of axle of direction slider 311 is greater than both sides, and the terminal hemisphere that is used for bonding magnet 313 is led to one side of direction slider 311 opposite side, and magnet 313 sets up to have the neodymium iron boron system permanent magnet of strong magnetism.
A first fixed seat with a threaded hole is welded and fixed at the top of the arc structure of the first hoop 317, the first fixed seat is used for installing a guide base 316, and a long straight groove is arranged in the center of the top of the first fixed seat;
a second fixing seat with a threaded hole is welded and fixed to the top of the arc structure of the second hoop 321, the second fixing seat is used for installing the protective shell 325 through bolts, two sets of studs are further welded to the top of the second fixing seat of the second hoop 321, the PCB 322 is fixedly installed on the second fixing seat through two sets of studs matched with nuts, and a long straight groove is also formed in the center of the top of the second fixing seat.
The stepped hole at the bottom of the guide base 316 is provided with two stepped holes, and the hole with the larger diameter of the stepped hole is used for bonding the hall sensor 315;
the hole with the smaller diameter of the stepped hole, the long straight groove of the first fixing seat and the long straight groove of the second fixing seat are used for passing through an electric connecting wire of the hall sensor 315.
The first hoop 317 is made of aluminum alloy material, and two groups of round holes are respectively arranged on two sides of the bottom plane of the first hoop 317;
the second anchor ear 321 is made of cast iron, two sets of through holes are respectively formed in two sides of the bottom plane of the second anchor ear 321, and the first anchor ear 317 and the second anchor ear 321 are fixedly mounted on the conductive rod 1 through four sets of bolts.
As shown in fig. 1-4, the invention further provides a detection method of the on-line detection device for the closing state of the automatic wiring device for ground wire ice melting, which comprises the following steps:
s1, the hall sensor 315 transmits a DI signal to the switching value input detection circuit 3223, the MCU3221 then controls the LORA terminal module 3224 to communicate with the receiving gateway through the LORA, and the battery power acquisition circuit 3222 is responsible for detecting the power information of the lithium battery 323 and transmitting the power information to the receiving gateway;
s2, when the automatic ground wire ice melting wiring device is switched on, the conducting rod 1 rotates, so that the current-guiding conductor 5 arranged at the tail end of the conducting rod drives the moving contact 4 to gradually approach the static contact 7, and the moving contact 4 contacts the static contact 7 and continues to move until the moving contact 4 touches the stop block 8;
s3, the guiding slide block 311 of the in-place sensor 3 is contacted with the front end flat plate of the protective cover 6, the spring 314 is compressed by the action of force, so that the magnet 313 is gradually close to the Hall sensor 315, when the distance between the moving contact 4 and the stop block 8 is within the range of 2-3mm, the Hall sensor 315 detects enough magnetic field intensity, a closing in-place signal is transmitted to the control component 32 at the rear end of the in-place sensor 3, and the closing in-place signal is transmitted to a receiving gateway under the iron tower through the transmission of the LORA terminal module 3224.
The LORA terminal module 3224 is set to be a 470MHzLORA terminal module, and the MCU3221 is set to be an MCU controller of an STM32F103C8T6 model.
The working principle is as follows: the hall sensor 315 transmits a DI signal to the switching value input detection circuit 3223, the MCU3221 then controls the LORA terminal module 3224 to communicate with the receiving gateway through the LORA, and the battery power acquisition circuit 3222 is responsible for detecting the power information of the lithium battery 323 and transmitting the power information to the receiving gateway;
when the ground wire ice-melting automatic wiring device is switched on, the conducting rod 1 rotates, so that the current-guiding conductor 5 arranged at the tail end of the conducting rod drives the moving contact 4 to gradually approach the static contact 7, and the moving contact 4 is contacted with the static contact 7 and continues to move until the moving contact 4 touches the stop block 8;
the guiding slide block 311 of the in-place sensor 3 touches the front end flat plate of the protective cover 6, the compression spring 314 receives the force to enable the magnet 313 to gradually approach the hall sensor 315, when the distance between the moving contact 4 and the stop block 8 is within the range of 2-3mm, the hall sensor 315 detects enough magnetic field intensity, a closing in-place signal is transmitted to the control component 32 at the rear end of the in-place sensor 3, and then the closing in-place signal is transmitted to a receiving gateway under the iron tower through the transmission of the LORA terminal module 3224.
In conclusion, the sensor provided by the invention adopts a mode of combining the built-in battery and wireless transmission, additional wiring and power supply on the iron tower are not needed, and the mounting position is flexible; the invention adopts a low-power consumption switching mode to operate, and the sensing equipment has long working time; the in-place sensor has good sealing performance and high protection level, the shell is shielded by using a metal material, the influence of the weather environment and electromagnetic interference is avoided, and the service life is long; the in-place closing detection method adopted by the scheme directly acts on the closing position, and the accuracy is high.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (8)
1. The closing state on-line detection device of the ground wire ice melting automatic wiring device is characterized in that: the conductive rod comprises a conductive rod (1), a suspension component (2), an in-place sensor (3), a moving contact (4), a drainage conductor (5), a protective cover (6), a static contact (7) and a stop block (8), wherein the conductive rod (1) is arranged to be an aluminum alloy circular tube conductive rod, the drainage conductor (5) is fixedly arranged at the tail end of one side of the conductive rod (1), the moving contact (4) is fixedly connected to one end, far away from the conductive rod (1), of the drainage conductor (5), the suspension component (2) is fixedly connected to the conductive rod (1), and the in-place sensor (3) is fixedly arranged on the conductive rod (1) through a bolt and is positioned between the drainage conductor (5) and the suspension component (2);
the static contact (7) and the stop block (8) are fixedly arranged inside the protective cover (6), the static contact (7) is composed of four copper elastic contact fingers, the static contact (7) is fixedly arranged on two sides of the stop block (8) in a symmetrical opening shape, the stop block (8) is arranged on the inner side wall of the protective cover (6) through bolt connection, and the stop block (8) is used for limiting the moving contact (4) when the moving contact is closed in place;
the in-place sensor (3) comprises an acquisition component (31) and a control component (32);
the acquisition assembly (31) comprises a guide sliding block (311), a guide sleeve (312), a magnet (313), a spring (314), a Hall sensor (315), a guide base (316) and a first hoop (317), wherein the guide base (316) is arranged to be a guide base made of aluminum alloy material, one side of the guide base (316) is arranged to be a plane with a through hole, the other side of the guide base (316) is arranged to be an external thread structure, one side of the plane with the through hole of the guide base (316) is fixedly connected with the first hoop (317) through a bolt, and one side of the external thread structure of the guide base (316) is fixedly connected with the guide sleeve (312) which is made of aluminum alloy material and has a matched internal thread structure;
the guide base (316) and the guide sleeve (312) form an internal independent space for placing a guide sliding block (311), a magnet (313), a spring (314) and a Hall sensor (315), a step hole is formed in the bottom of the guide base (316), the Hall sensor (315) is bonded in the step hole, an electric connecting line of the Hall sensor (315) extends to the outside through the step hole, the guide sliding block (311) slides on the inner wall of the guide sleeve (312) through a compression spring (314), the compression spring (314) is a non-magnetic stainless steel spring, the bottom surface of one end of the compression spring (314) is abutted against a shaft shoulder on one side of the guide sliding block (311) with the groove, and the ground of the other end of the compression spring (314) is abutted against the bottom of the guide base (316);
the control assembly (32) comprises a second hoop (321), a PCB (322), a lithium battery (323), a sealing cover (324), a protective shell (325) and a flat antenna (326), the protective shell (325) is a cylindrical protective shell made of stainless steel, the lithium battery (323) is installed inside the protective shell (325), the flat antenna (326) is attached to the bottom of the protective shell (325), the sealing cover (324) is sleeved on the protective shell (325) and clamps the flat antenna (326) between the protective shell (325) and the sealing cover (324), a group of circular holes are formed in the center of the bottom of the protective shell (325), the circular holes are used for penetrating through electric connecting lines between the flat antenna (326) and the PCB (322), and an electric connector of the Hall sensor (315) extends to the outside and is electrically connected to the PCB (322);
the PCB (322) is used for collecting a trigger signal of the Hall sensor (315), and the PCB (322) comprises an MCU (3221), a battery electric quantity collecting circuit (3222), a switching value input detecting circuit (3223) and an LORA terminal module (3224).
2. The on-line detection device for the closing state of the automatic ground wire ice melting wiring device according to claim 1, characterized in that: one end of the drainage conductor (5) is fixedly connected with a hoop structure, and the drainage conductor (5) is fixedly installed on the conducting rod (1) through the hoop structure.
3. The on-line detection device for the closing state of the automatic ground wire ice melting wiring device according to claim 1, characterized in that: the direction slider (311) sets up to polytetrafluoroethylene direction slider, and direction slider (311) is whole to set up to the step shaft structure, the middle shaft diameter of direction slider (311) is greater than both sides, and direction slider (311) one side end is the hemisphere, and direction slider (311) opposite side has the circular recess that is used for bonding magnet (313), magnet (313) set up to have strong magnetic neodymium iron boron system permanent magnet.
4. The on-line detection device for the closing state of the automatic ground wire ice melting wiring device according to claim 1, characterized in that: a first fixed seat with a threaded hole is fixedly welded to the top of the arc structure of the first hoop (317), the first fixed seat is used for mounting a guide base (316), and a long straight groove is formed in the center of the top of the first fixed seat;
the arc structure top welded fastening of second staple bolt (321) has the second fixing base of threaded hole, the second fixing base is used for using bolt installation protective housing (325), two sets of double-screw bolts have still been welded at the second fixing base top of second staple bolt (321), PCB board (322) are through two sets of double-screw bolt cooperation nut fixed mounting on the second fixing base, the top centre of second fixing base also is provided with long straight flute.
5. The on-line detection device for the closing state of the automatic ground wire ice melting wiring device according to claim 4, characterized in that: the stepped hole at the bottom of the guide base (316) is provided with two stepped holes, and the hole with the larger diameter of the stepped hole is used for bonding the Hall sensor (315);
the hole with the smaller diameter of the step hole, the long straight groove of the first fixing seat and the long straight groove of the second fixing seat are used for penetrating through an electric connecting wire of the Hall sensor (315).
6. The on-line detection device for the closing state of the automatic ground wire ice melting wiring device according to claim 1, characterized in that: the first hoop (317) is made of aluminum alloy materials, and two groups of round holes are formed in two sides of the bottom plane of the first hoop (317);
the second hoop (321) is made of cast iron materials, two groups of through holes are formed in two sides of the bottom plane of the second hoop (321), and the first hoop (317) and the second hoop (321) are fixedly mounted on the conducting rod (1) through four groups of bolts in a locking mode.
7. The detection method of the on-line detection device for the closing state of the automatic ground wire ice melting wiring device as claimed in claim 1, is characterized in that: the method comprises the following steps:
s1, the Hall sensor (315) transmits a DI signal to the switching value input detection circuit (3223), the MCU (3221) controls the LORA terminal module (3224) to communicate with the receiving gateway through the LORA, and the battery power acquisition circuit (3222) is responsible for detecting power information of the lithium battery (323) and transmitting the power information to the receiving gateway;
s2, when the automatic ground wire ice melting wiring device is switched on, the conducting rod (1) rotates, so that the current-guiding conductor (5) arranged at the tail end of the conducting rod drives the moving contact (4) to gradually approach the static contact (7), and the moving contact (4) is contacted with the static contact (7) and continues to move until the moving contact (4) touches the stop block (8);
s3, the guide slider (311) of the in-place sensor (3) is in contact with a front end flat plate of the protective cover (6), the compression spring (314) receives the action of force to enable the magnet (313) to be gradually close to the Hall sensor (315), when the moving contact (4) is 2-3mm away from the stop block (8), the Hall sensor (315) detects enough magnetic field intensity, a closing in-place signal is transmitted to the control component (32) at the rear end of the in-place sensor (3), and the closing in-place signal is transmitted to a receiving gateway under the iron tower through the transmission of the LORA terminal module (3224).
8. The detection method of the on-line detection device for the closing state of the automatic ground wire ice melting wiring device according to claim 7, characterized in that: the LORA terminal module (3224) is set to be a 470MHz LORA terminal module, and the MCU (3221) is set to be an MCU controller of an STM32F103C8T6 model.
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| CN202011052170.6A CN112087059B (en) | 2020-09-29 | 2020-09-29 | Online detection device and detection method for closing state of automatic ground wire ice melting wiring device |
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Application publication date: 20201215 Assignee: NANJING POWER FITTINGS DESIGN AND RESEARCH INSTITUTE Co.,Ltd. Assignor: GUIYANG BUREAU, EHV POWER TRANSMISSION COMPANY, CHINA SOUTHERN POWER GRID Co.,Ltd. Contract record no.: X2023990000936 Denomination of invention: The online detection device and detection method for the closing status of the ground wire melting ice automatic wiring device Granted publication date: 20210615 License type: Common License Record date: 20231124 |