CN110649500A - High-voltage switch rotating shaft acceleration acquisition device based on giant magnetoresistance - Google Patents
High-voltage switch rotating shaft acceleration acquisition device based on giant magnetoresistance Download PDFInfo
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- CN110649500A CN110649500A CN201911055380.8A CN201911055380A CN110649500A CN 110649500 A CN110649500 A CN 110649500A CN 201911055380 A CN201911055380 A CN 201911055380A CN 110649500 A CN110649500 A CN 110649500A
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- China
- Prior art keywords
- voltage switch
- rotating shaft
- magnetic generator
- magnetic
- giant magnetoresistance
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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
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/0356—Mounting of monitoring devices, e.g. current transformers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/065—Means for detecting or reacting to mechanical or electrical defects
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
Abstract
The invention discloses a giant magnetoresistance based acceleration acquisition device for a rotating shaft of a high-voltage switch, which comprises a magnetic sensor and a magnetic generator, wherein the magnetic generator is fixedly connected to a magnetic generator seat, the magnetic generator seat is fixedly connected to the shaft end of the rotating shaft of the high-voltage switch, the magnetic sensor is fixedly connected to one end of a telescopic rod, the other end of the telescopic rod is fixedly connected to a fixed seat, the fixed seat is fixedly connected to the wall of a switch cabinet, and the magnetic sensor is ensured to be opposite to the magnetic generator. According to the invention, the magnetic generator is arranged at the top of the high-voltage switch rotating shaft, the magnetic sensor is arranged on the side cabinet wall of the high-voltage switch cabinet rotating shaft, so that the acceleration acquisition of the high-voltage switch rotating shaft is realized, the sensor does not need to follow the rotating shaft to act, the non-contact installation of the magnetic generator and the magnetic sensor is realized, the safety and the stability of the high-voltage switch monitoring equipment are improved, the intelligent process of the high-voltage switch equipment is improved, and the development of an intelligent power grid is finally facilitated.
Description
Technical Field
The invention belongs to the technical field of acceleration monitoring of high-voltage switch rotating shafts, and particularly relates to a giant magnetoresistance based acceleration acquisition device for a high-voltage switch rotating shaft.
Background
GIS devices have been widely operated around the world since the practical use in the 60's of the 20 th century. GIS is widely used not only in the high-voltage and ultra-high voltage fields, but also in the ultra-high voltage field. Compared with a conventional open-type transformer substation, the GIS has the advantages of compact structure, small occupied area, high reliability, flexible configuration, convenience in installation, high safety, high environmental adaptability, small maintenance workload and maintenance interval of main parts not less than 20 years.
High voltage switchgear refers to indoor and outdoor ac switchgear operating in power systems with voltages of 3kV and above, and frequencies of 50Hz and below. The power system protection device is mainly used for controlling and protecting power systems (including users of power plants, substations, power transmission and distribution lines, industrial and mining enterprises and the like), can be used for not only putting a part of power equipment or lines into or out of operation according to the operation requirements of a power grid, but also quickly cutting off the fault part from the power grid when the power equipment or lines have faults, thereby ensuring the normal operation of the fault-free part in the power grid and the safety of equipment and operation maintenance personnel. Therefore, the high-voltage switch equipment is very important power transmission and distribution equipment, and the safe and reliable operation of the high-voltage switch equipment has very important significance on the safe and effective operation of a power system.
The temperature rise of the high-voltage switch equipment contact, the mechanical characteristics of an operating mechanism and the arc burning loss of a breaker contact are important aspects of causing the fault of the switch equipment, and the effective real-time monitoring on the high-voltage switch equipment contact and the operating mechanism is the key for realizing the switching of the maintenance mode of the switch equipment. Most of the faults (60-66% of major faults and 86% of minor faults) of the high-voltage circuit breaker occur in mechanical mechanisms, mainly related to operating mechanisms, monitoring devices, auxiliary devices and the like, and are mostly caused by poor mechanical characteristics, such as separation rejection, closing rejection, misoperation and the like. Monitoring the operating characteristics of a switching device is of great significance.
At present, a temperature measuring sensor of high-voltage switch equipment and an installation method thereof are relatively mature, and the mechanical characteristics of an operating mechanism of the high-voltage switch equipment cannot be fixed, so that the detection of the operating mechanism of the high-voltage switch equipment is always in an off-line test mode, the high-voltage switch equipment is withdrawn from operation every year to carry out an off-line experiment, and the mechanical characteristics of the operating mechanism are tested.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the utility model provides a high-voltage switch axis of rotation acceleration collection system based on giant magnetoresistance to solve the problem that exists among the prior art.
The technical scheme adopted by the invention is as follows: the utility model provides a high tension switch axis of rotation acceleration collection system based on giant magnetoresistance, includes magnetic sensor and magnetic generator, and magnetic generator fixed connection is on the magnetic generator seat, and magnetic generator seat fixed connection is on the axle head of high tension switch axis of rotation, and magnetic sensor fixed connection is in telescopic link one end, and telescopic link other end fixed connection is on the fixing base, and fixing base fixed connection just ensures that magnetic sensor is just to magnetic generator on the cubical switchboard cabinet wall.
Preferably, the right end of the fixing seat is provided with a boss, the axial middle part of the fixing seat is provided with a through hole, the telescopic rod movably extends into the through hole in the fixing seat, and the surface of the boss is provided with a set screw for locking the telescopic rod.
Preferably, the fixing seat comprises an inner flange and an outer flange, and the inner flange and the outer flange are locked by bolts after clamping the wall of the switch cabinet.
Preferably, the right end of the telescopic rod is provided with a connecting flange plate, and the connecting flange plate is fixedly connected with the magnetic sensor through four screws.
Preferably, one end face of the magnetic generator seat is provided with a blind hole embedded into the magnetic generator, the other end of the magnetic generator seat is provided with an inner hole, and the high-voltage switch rotating shaft is locked by a plurality of locking screws which are uniformly distributed in the circumferential direction after being inserted into the inner hole.
The invention has the beneficial effects that: compared with the prior art, the invention realizes acceleration acquisition of the high-voltage switch rotating shaft by installing the magnetic generator at the top of the high-voltage switch rotating shaft and installing the magnetic sensor at the side cabinet wall of the high-voltage switch rotating shaft, the sensor does not need to act along with the rotating shaft, non-contact installation of the magnetic generator and the magnetic sensor is realized, online monitoring of mechanical characteristics of the high-voltage switch is realized, real-time data analysis is more reliable, safety and stability of high-voltage switch monitoring equipment are improved, intelligent process of the high-voltage switch equipment is improved, and development of an intelligent power grid is facilitated finally.
Drawings
Fig. 1 is an exploded view of the structure of the present invention.
Detailed Description
The invention is further described with reference to the accompanying drawings and specific embodiments.
Example 1: as shown in fig. 1, a high tension switch axis of rotation acceleration collection system based on giant magnetoresistance, magnetic sensor 1 (giant magnetoresistance sensor principle) and the magnetic generator 2 of square structure including square structure, magnetic sensor 1 sets up the installation through-hole with 2 four corners departments of magnetic generator, 2 fixed connection of magnetic generator are on magnetic generator seat 6, 6 fixed connection of magnetic generator seat is served at the axle of high tension switch axis of rotation 7, 1 fixed connection of magnetic sensor is in 3 one end of telescopic link, 3 other end fixed connection of telescopic link is on fixing base 4, 4 fixed connection of fixing base is on cubical switchboard cabinet wall 5 and ensure that magnetic sensor 1 is just to magnetic generator 2.
Preferably, 4 right-hand members of above-mentioned fixing base are provided with boss 8, axial middle part sets up in the through-hole 9 on the fixing base 4 is stretched into to the activity of through-hole 9 telescopic link 3 and sets up holding screw 10 locking telescopic link 3 on the boss 8 surface, flexible regulation convenient and fast, locking is reliable and stable, set up the boss, the guidance quality of through-hole is good and the stability that the telescopic link is connected is better, the bending of avoiding the telescopic link cantilever to lead to measurement accuracy low, also be convenient for install holding screw.
Preferably, the fixing seat 4 comprises an inner flange 401 and an outer flange 402 which are provided with inner through holes, the inner flange 401 and the outer flange 402 clamp and hit the switch cabinet wall 5 and then are locked by bolts, the installation is convenient and fast, the connection is stable and reliable, and the circular holes with equal diameters are formed in the corresponding inner through holes of the switch cabinet wall 5.
Preferably, the right end of the telescopic rod 3 is provided with the connecting flange plate 11, the connecting flange plate 11 is fixedly connected with the magnetic sensor 1 through four screws, and the mounting is convenient and fast, and the mounting and dismounting are easy.
Preferably, one end face of the magnetic generator seat 6 is provided with a blind hole embedded into the magnetic generator 6, the other end of the magnetic generator seat is provided with an inner hole, the high-voltage switch rotating shaft 7 is locked by a plurality of locking screws 12 which are uniformly distributed in the circumferential direction after being inserted into the inner hole, and the magnetic generator and the high-voltage switch rotating shaft are convenient and fast to assemble and disassemble and are stable and reliable in connection.
The magnetic generator is made of Ru magnet materials, the magnetic sensor is a giant magnetoresistance sensor, the giant magnetoresistance sensor is installed in the square shell, and the inner part of the giant magnetoresistance sensor is provided with an acquisition circuit connected with the giant magnetoresistance sensor.
When the high-voltage switch acts, the rotating shaft in the operating mechanism rotates to drive the top magnetic generator to rotate, so that the magnetic sensor acquires the angle change and the change speed of the magnetic field of the magnetic generator, and the non-contact acquisition of the acceleration of the rotating shaft of the high-voltage switch is realized.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention, and therefore, the scope of the present invention should be determined by the scope of the claims.
Claims (5)
1. The utility model provides a high tension switchgear axis of rotation acceleration collection system based on giant magnetoresistance which characterized in that: including magnetic sensor (1) and magnetic generator (2), magnetic generator (2) fixed connection is on magnetic generator seat (6), magnetic generator seat (6) fixed connection is on the axle head of high tension switch axis of rotation (7), magnetic sensor (1) fixed connection is in telescopic link (3) one end, telescopic link (3) other end fixed connection is on fixing base (4), fixing base (4) fixed connection just ensures that magnetic sensor (1) is just to magnetic generator (2) on cubical switchboard cabinet wall (5).
2. The giant magnetoresistance based high-voltage switch rotating shaft acceleration acquisition device according to claim 1, wherein: the right end of the fixing seat (4) is provided with a boss (8), the axial middle part is provided with a through hole (9), the telescopic rod (3) movably extends into the through hole (9) on the fixing seat (4), and the surface of the boss (8) is provided with a set screw (10) to lock the telescopic rod (3).
3. The giant magnetoresistance based high-voltage switch rotating shaft acceleration acquisition device according to claim 1, wherein: the fixing seat (4) comprises an inner flange (401) and an outer flange (402), and the inner flange (401) and the outer flange (402) clamp the wall (5) of the switch cabinet and are locked by bolts.
4. The giant magnetoresistance based high-voltage switch rotating shaft acceleration acquisition device according to claim 1, wherein: the right end of the telescopic rod (3) is provided with a connecting flange plate (11), and the connecting flange plate (11) is fixedly connected with the magnetic sensor (1) through four screws.
5. The giant magnetoresistance based high-voltage switch rotating shaft acceleration acquisition device according to claim 1, wherein: one end face of the magnetic generator seat (6) is provided with a blind hole embedded into the magnetic generator (6), the other end of the magnetic generator seat is provided with an inner hole, and the high-voltage switch rotating shaft (7) is locked by a plurality of locking screws (12) which are uniformly distributed in the circumferential direction after being inserted into the inner hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911055380.8A CN110649500A (en) | 2019-10-31 | 2019-10-31 | High-voltage switch rotating shaft acceleration acquisition device based on giant magnetoresistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911055380.8A CN110649500A (en) | 2019-10-31 | 2019-10-31 | High-voltage switch rotating shaft acceleration acquisition device based on giant magnetoresistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110649500A true CN110649500A (en) | 2020-01-03 |
Family
ID=69014024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911055380.8A Pending CN110649500A (en) | 2019-10-31 | 2019-10-31 | High-voltage switch rotating shaft acceleration acquisition device based on giant magnetoresistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110649500A (en) |
-
2019
- 2019-10-31 CN CN201911055380.8A patent/CN110649500A/en active Pending
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