CN211741529U - High tension switchgear insulator leakage current on-line monitoring device - Google Patents
High tension switchgear insulator leakage current on-line monitoring device Download PDFInfo
- Publication number
- CN211741529U CN211741529U CN201922466143.2U CN201922466143U CN211741529U CN 211741529 U CN211741529 U CN 211741529U CN 201922466143 U CN201922466143 U CN 201922466143U CN 211741529 U CN211741529 U CN 211741529U
- Authority
- CN
- China
- Prior art keywords
- insulator
- leakage current
- monitoring device
- line monitoring
- switch cabinet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model discloses an on-line monitoring device for leakage current of a high-voltage switch cabinet insulator, which comprises a straight-through current transformer, an insulator and a monitoring instrument; the upper end of the insulator is connected to a high-voltage bus, and the lower end of the insulator penetrates through the straight-through current transformer and then is connected to a grounding bus; the monitoring instrument comprises an adder, a power quality detection chip, a microprocessor chip and a display unit; one end of the adder is connected with the output end of the straight-through current transformer, and the other end of the adder is connected with the power quality detection chip; the input end of the microprocessor chip is connected with the power quality detection chip, and the output end of the microprocessor chip is connected with the display unit. The utility model discloses a measure the insulator to ground leakage current size, come reaction insulator insulating properties, make insulator insulating properties on-line monitoring become reliable and simple.
Description
Technical Field
The utility model particularly relates to a high tension switchgear insulator leakage current on-line monitoring device.
Background
The high tension switchgear insulator can cause high tension switchgear insulator leakage current to increase under moist, dirty condition, can arouse insulation breakdown when serious, in order to guarantee high tension switchgear's safety, needs know the insulator insulating condition in real time to avoid because the insulator leaks the damage that electric current leads to high tension switchgear, cause unnecessary loss of property.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model provides a high tension switchgear insulator leakage current on-line monitoring device, through the on-line monitoring that monitoring insulator is to ground leakage current size and then realize insulating situation, have important meaning for guaranteeing power supply safety.
In order to realize the technical purpose, reach above-mentioned technological effect, the utility model discloses a following technical scheme realizes:
an on-line monitoring device for leakage current of an insulator of a high-voltage switch cabinet comprises a straight-through current transformer, the insulator and a monitoring instrument;
the upper end of the insulator is connected to a high-voltage bus, and the lower end of the insulator penetrates through the straight-through current transformer and then is connected to a grounding bus;
the monitoring instrument comprises an adder, a power quality detection chip, a microprocessor chip and a display unit; one end of the adder is connected with the output end of the straight-through current transformer and used for converting the collected alternating current signal into a direct current signal, and the other end of the adder is connected with the electric energy quality detection chip; the input end of the microprocessor chip is connected with the output end of the power quality detection chip, and the output end of the microprocessor chip is connected with the input end of the display unit.
Optionally, a metal ring is sleeved outside the insulator, the upper end of the metal ring is connected to the high-voltage bus, and the lower end of the metal ring penetrates through the feed-through current transformer and then is connected to the ground busbar.
Optionally, the feed-through current transformer comprises a shielding case, a permalloy iron core and a coil; the coil is wound on the permalloy iron core, and the permalloy iron core and the coil are both placed in the shielding cover.
Optionally, the monitoring instrument further comprises a key unit, and the key unit is connected with the microprocessor chip.
Optionally, the monitoring instrument further includes a clock unit, and the clock unit is connected to the microprocessor chip.
Optionally, the clock unit adopts a DS1302 chip.
Optionally, the display unit is a color liquid crystal screen.
Optionally, the monitoring instrument further comprises a communication interface, and the communication interface is connected with the microprocessor chip.
Optionally, the communication interface employs an RS485 module.
Optionally, the on-line monitoring device for leakage current of the insulator of the high-voltage switch cabinet further comprises a power supply unit connected with the monitoring instrument, and the power supply unit is used for converting 220VAC into 5VDC for power supply.
Optionally, the power quality detection chip is an IDT90E36 chip.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a measure the insulator to ground leakage current size, come reaction insulator insulating properties, make insulator insulating properties on-line monitoring become reliable and simple.
The utility model discloses utilize straight-through current transformer to obtain insulator leakage current, and straight-through current transformer installs between insulator and ground row, the installation of being convenient for.
Drawings
In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the present disclosure taken in conjunction with the accompanying drawings, in which:
fig. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a schematic circuit diagram according to an embodiment of the present invention.
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 present invention and are not intended to limit the scope of the invention.
The following description is made in detail for the application of the principles of the present invention with reference to the accompanying drawings.
As shown in fig. 1-2, an on-line monitoring device for leakage current of an insulator of a high-voltage switch cabinet comprises a straight-through current transformer, an insulator and a monitoring instrument;
the upper end of the insulator is connected to a high-voltage bus, and the lower end of the insulator penetrates through the straight-through current transformer and then is connected to a grounding bus;
the monitoring instrument comprises an adder, a power quality detection chip, a microprocessor chip and a display unit; one end of the adder is connected with the output end of the straight-through current transformer, and the other end of the adder is connected with the power quality detection chip and used for converting alternating current signals into direct current signals so as to facilitate data acquisition of a microprocessor chip; the input end of the microprocessor chip is connected with the power quality detection chip, and the output end of the microprocessor chip is connected with the display unit; and the display unit is connected with an output end I/O port of the microprocessor chip.
The utility model discloses an in a concrete embodiment, the outside cover of insulator is equipped with the becket, the upper end of becket is connected to high-voltage bus, and its lower extreme passes be connected to the female row of ground connection behind the straight-through current transformer, be applicable to the insulator of having accomplished the installation, the unable situation that comes out from the insulator inner lead.
In a specific embodiment of the present invention, the feed-through current transformer includes a shielding case, a permalloy core, and a coil; the coil is wound on the permalloy iron core, and the permalloy iron core and the coil are both placed in the shielding cover to avoid the interference of an electromagnetic field; specifically, the coil comprises 1000 turns.
In a specific embodiment of the present invention, the monitoring instrument further comprises a key unit, the key unit is connected to the microprocessor chip, that is, the output end of the key unit is connected to the I/O port of the output end of the microprocessor chip; preferably, the key unit adopts a 4-bit reset key for combined use.
In a specific embodiment of the present invention, the monitoring instrument further includes a clock unit, the clock unit is connected to the microprocessor chip, that is, the output end of the clock unit is connected to the I/O port of the input end of the microprocessor chip; preferably, the clock unit adopts a DS1302 chip.
In an embodiment of the present invention, the display unit is a color liquid crystal display.
In a specific embodiment of the present invention, the monitoring instrument further includes a communication interface, the communication interface is connected to the microprocessor chip, that is, the input end of the communication interface is connected to the communication interface corresponding to the microprocessor unit; preferably, the communication interface adopts an RS485 module.
In a specific embodiment of the utility model, high tension switchgear insulator leakage current on-line monitoring device still includes the electrical unit who links to each other with the monitoring instrument, electrical unit is used for changeing 220VAC to 5VDC power supply.
In a specific embodiment of the present invention, the power quality detection chip is an IDT90E36 chip.
In the concrete application process, an insulator can be installed on the three-phase circuit on the high-voltage bus respectively, and therefore, the following requirements are needed:
the system comprises three straight-through current transformers, namely an A-phase straight-through current transformer, a B-phase straight-through current transformer and a C-phase straight-through current transformer, wherein each straight-through current transformer is fixed at the lower end of a corresponding phase of lightning arrester in a straight-through mode to measure the total leakage current of the lightning arrester;
three adders, namely an A-phase adder, a B-phase adder and a C-phase adder; the input end of the A-phase adder is connected with the output end of the A-phase straight-through current transformer, and the input end of the B-phase adder is connected with the output end of the B-phase straight-through current transformer; the input end of the C-phase adder is connected with the output end of the C-phase straight-through current transformer, and the output ends of the C-phase adder, the C-phase straight-through current transformer and the C-phase straight-through current transformer are connected with the power quality detection chip.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a high tension switchgear insulator leakage current on-line monitoring device which characterized in that: the system comprises a straight-through current transformer, an insulator and a monitoring instrument;
the upper end of the insulator is connected to a high-voltage bus, and the lower end of the insulator penetrates through the straight-through current transformer and then is connected to a grounding bus;
the monitoring instrument comprises an adder, a power quality detection chip, a microprocessor chip and a display unit; one end of the adder is connected with the output end of the straight-through current transformer and used for converting the collected alternating current signal into a direct current signal, and the other end of the adder is connected with the electric energy quality detection chip; the input end of the microprocessor chip is connected with the output end of the power quality detection chip, and the output end of the microprocessor chip is connected with the input end of the display unit.
2. The high-voltage switch cabinet insulator leakage current on-line monitoring device of claim 1, characterized in that: the outer sleeve of insulator is equipped with the becket, the upper end of becket is connected to the high voltage bus, its lower extreme passes behind the straight-through current transformer be connected to ground connection female arranging.
3. The high-voltage switch cabinet insulator leakage current on-line monitoring device of claim 1, characterized in that: the straight-through current transformer comprises a shielding case, a permalloy iron core and a coil; the coil is wound on the permalloy iron core, and the permalloy iron core and the coil are both placed in the shielding cover.
4. The high-voltage switch cabinet insulator leakage current on-line monitoring device of claim 1, characterized in that: the monitoring instrument further comprises a key unit, and the key unit is connected with the microprocessor chip.
5. The high-voltage switch cabinet insulator leakage current on-line monitoring device of claim 1, characterized in that: the monitoring instrument further comprises a clock unit, and the clock unit is connected with the microprocessor chip.
6. The high-voltage switch cabinet insulator leakage current on-line monitoring device of claim 1, characterized in that: the display unit is a color liquid crystal screen.
7. The high-voltage switch cabinet insulator leakage current on-line monitoring device of claim 1, characterized in that: the monitoring instrument further comprises a communication interface, and the communication interface is connected with the microprocessor chip.
8. The high-voltage switch cabinet insulator leakage current on-line monitoring device of claim 7, characterized in that: and the communication interface adopts an RS485 module.
9. The high-voltage switch cabinet insulator leakage current on-line monitoring device of claim 1, characterized in that: the high-voltage switch cabinet insulator leakage current on-line monitoring device further comprises a power supply unit connected with the monitoring instrument, and the power supply unit is used for converting 220VAC into 5VDC for power supply.
10. The high-voltage switch cabinet insulator leakage current on-line monitoring device of claim 1, characterized in that: the power quality detection chip is an IDT90E36 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922466143.2U CN211741529U (en) | 2019-12-31 | 2019-12-31 | High tension switchgear insulator leakage current on-line monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922466143.2U CN211741529U (en) | 2019-12-31 | 2019-12-31 | High tension switchgear insulator leakage current on-line monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211741529U true CN211741529U (en) | 2020-10-23 |
Family
ID=72868283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922466143.2U Active CN211741529U (en) | 2019-12-31 | 2019-12-31 | High tension switchgear insulator leakage current on-line monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211741529U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116148521A (en) * | 2023-04-14 | 2023-05-23 | 烟台东方威思顿电气有限公司 | High-voltage metering device and depth fusion type polar column |
-
2019
- 2019-12-31 CN CN201922466143.2U patent/CN211741529U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116148521A (en) * | 2023-04-14 | 2023-05-23 | 烟台东方威思顿电气有限公司 | High-voltage metering device and depth fusion type polar column |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202772882U (en) | Shielding-type anti-interference electric power secondary system | |
| CN203881834U (en) | AC-DC current wireless monitoring equipment | |
| CN211741529U (en) | High tension switchgear insulator leakage current on-line monitoring device | |
| CN203940885U (en) | Cable sheath circulation on-Line Monitor Device | |
| CN203561722U (en) | Two-frequency signal detection position indicator for electricity overhead line | |
| CN203178369U (en) | Bushing monitoring system for intelligent substation | |
| CN212967520U (en) | Novel pole-mounted circuit breaker | |
| CN104635043A (en) | Electronic sensing type high-voltage metering device and remote testing system | |
| CN202305586U (en) | Interface device for transformer casing pipe | |
| CN211291959U (en) | Cubical switchboard mechanical properties intelligent monitoring device based on it is wireless passive | |
| CN210242857U (en) | Passive temperature and humidity monitoring device applied to tubular bus | |
| CN209641511U (en) | A kind of current transformer preventing suspended voltage | |
| CN103647224B (en) | A kind of full optical current mutual inductor device connecting Three-phase common-box type combined electric appliance | |
| CN203456777U (en) | Handcart used for collecting high tension switchgear voltage signals | |
| CN203659568U (en) | Electromagnetic current transformer demagnetization device | |
| CN203117268U (en) | Power cable multi-working-condition on-line detection system | |
| CN202816640U (en) | Current sampling linear transformer with digital output | |
| CN109950805B (en) | High-voltage switch cabinet | |
| CN205280858U (en) | Leakage current sensor for power equipment | |
| CN218040743U (en) | Cable terminal with passive temperature measurement | |
| CN220525169U (en) | High-temperature gas cooled reactor enclosed bus temperature measurement probe and main power generation system circuit | |
| CN219320385U (en) | Sheath-penetrating voltage sensor meeting secondary fusion | |
| CN108711771B (en) | Novel HGIS integrated combined optical transformer | |
| CN204741340U (en) | Power cable gets electric installation and cable elbow head | |
| CN212111737U (en) | On-line performance monitoring device for lightning arrester in cabinet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |