CN203232124U - Grounding state alarm device for transformer bushing tap - Google Patents
Grounding state alarm device for transformer bushing tap Download PDFInfo
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- CN203232124U CN203232124U CN 201320239024 CN201320239024U CN203232124U CN 203232124 U CN203232124 U CN 203232124U CN 201320239024 CN201320239024 CN 201320239024 CN 201320239024 U CN201320239024 U CN 201320239024U CN 203232124 U CN203232124 U CN 203232124U
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- alarm
- transformer bushing
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Abstract
The utility model relates to a grounding state alarm device for a transformer bushing tap. The grounding state alarm device is mainly characterized in that the alarm device comprises a voltage transformer, a signal acquisition circuit, an A/D converter, a single chip microcomputer and an alarm, wherein the voltage transformer is connected to a down lead of the transformer bushing tap and used for converting a tap high voltage to a signal acquisition low voltage, the signal acquisition circuit is used for processing the low voltage and transmitting the processed voltage signal to the A/D converter, the A/D converter is used for converting an analog voltage signal to a digital signal and transmitting the digital signal to the single chip microcomputer, and the single chip microcomputer is used for logical judgment according to the acquired voltage amplitude and alarming through the alarm when the voltage amplitude exceeds a threshold value. The transformer bushing tap grounding state alarm device is reasonable in design, simple in structure, is safe and reliable, and is convenient to install and the like; and rapid, convenient and reliable alarm function is achieved under the condition that the grounding state of the transformer bushing tap is bad, the problem that the bad grounding state of the transformer bushing tap is not alarmed in time is solved, and the operation reliability of the transformer bushing equipment is ensured.
Description
Technical field
The utility model belongs to the transformer technology field, especially a kind of bushing shell for transformer end screen ground state warning device.
Background technology
The bushing shell for transformer on-Line Monitor Device can in time be found the inside pipe casing defective by the on-line measurement to sleeve pipe dielectric loss and electric capacity, is the important content in the intelligent transformer transformation.When the mounting sleeve on-Line Monitor Device, generally all need the end screen is transformed, earth point is shielded at the end move to ground, in order to install and measure device.In this case, in case broken string appears in end screen downlead, will cause bushing shell for transformer end screen imperfect earth, make the end screen suspend and discharge, at this moment, if long-play, by the discharge cumulative effect, may cause the bushing shell for transformer insulation fault, influence the safe operation of equipment.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of reasonable in design, dependable performance and bushing shell for transformer end screen ground state warning device easy to use are provided.
The utility model solves its technical matters and takes following technical scheme to realize:
A kind of bushing shell for transformer end screen ground state warning device, comprise voltage transformer (VT), signal acquisition circuit, A/D converter, single-chip microcomputer and alarm, described voltage transformer (VT) is connected on the screen downlead of bushing shell for transformer end and is converted to the signals collecting low-voltage for high voltage is shielded at the end; Signal acquisition circuit is used for A/D converter is handled and sent to low-voltage; A/D converter is used for analog voltage signal is converted to digital signal and passes to single-chip microcomputer; Single-chip microcomputer carries out logic according to the voltage magnitude of gathering to be judged, reports to the police by alarm when surpassing threshold value.
And described alarm is LED light or acoustical generator.
Advantage of the present utility model and good effect are:
The utility model is reasonable in design, it has taken full advantage of Digital Signal Processing, realized under the screen ground state unfavorable condition of bushing shell for transformer end quick, convenient, reliable warning function, have advantages such as structure is simple and clear, safe and reliable, installation is convenient, solve the timely warning problem of bushing shell for transformer end screen imperfect earth state, guaranteed bushing shell for transformer equipment reliability of operation.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model embodiment is further described:
A kind of bushing shell for transformer end screen ground state warning device, as shown in Figure 1, constituted by the voltage transformer (VT), signal acquisition circuit, A/D converter, single-chip microcomputer and the alarm that connect successively, voltage transformer (VT) is connected on the screen downlead of bushing shell for transformer end, is used for that high voltage is shielded at the end and is converted to the signals collecting low-voltage; Signal acquisition circuit is used for low-voltage is further processed and transmits; A/D converter is used for analog voltage signal is converted to digital signal, in order to carry out the logical process analysis; Single-chip microcomputer carries out logic according to the voltage magnitude of gathering to be judged, when surpassing limit value, exports corresponding voltage by the digital-to-analog conversion function of inside; Alarm is the final warning that realizes under the screen imperfect earth state of end after receiving relevant voltage.Described alarm both can be that LED light is reported to the police by pilot lamp, also can be that acoustical generator passes through audible alarm.
The utility model according to the floating potential under the bottom shielding of bushing different situations, is selected suitable voltage transformer (VT) for use in use, and the respective threshold of definite digital signal circuit, to adapt to the alarm detection of different bushings shell for transformer end screen.
It is emphasized that; embodiment described in the utility model is illustrative; rather than it is determinate; therefore the utility model is not limited to the embodiment described in the embodiment; every by those skilled in the art according to other embodiments that the technical solution of the utility model draws, belong to the scope of the utility model protection equally.
Claims (2)
1. the ground state warning device is shielded at a bushing shell for transformer end, it is characterized in that: comprise voltage transformer (VT), signal acquisition circuit, A/D converter, single-chip microcomputer and alarm, described voltage transformer (VT) is connected on the screen downlead of bushing shell for transformer end and is converted to the signals collecting low-voltage for high voltage is shielded at the end; Signal acquisition circuit is used for A/D converter is handled and sent to low-voltage; A/D converter is used for analog voltage signal is converted to digital signal and passes to single-chip microcomputer; Single-chip microcomputer carries out logic according to the voltage magnitude of gathering to be judged, reports to the police by alarm when surpassing threshold value.
2. bushing shell for transformer according to claim 1 end screen ground state warning device, it is characterized in that: described alarm is LED light or acoustical generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320239024 CN203232124U (en) | 2013-05-06 | 2013-05-06 | Grounding state alarm device for transformer bushing tap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320239024 CN203232124U (en) | 2013-05-06 | 2013-05-06 | Grounding state alarm device for transformer bushing tap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203232124U true CN203232124U (en) | 2013-10-09 |
Family
ID=49288244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320239024 Expired - Lifetime CN203232124U (en) | 2013-05-06 | 2013-05-06 | Grounding state alarm device for transformer bushing tap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203232124U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105182153A (en) * | 2015-08-24 | 2015-12-23 | 国网天津静海供电有限公司 | Grounding wire fault indicator for distribution transformer |
| CN106383466A (en) * | 2016-09-28 | 2017-02-08 | 卡斯柯信号有限公司 | Threshold-adjustable security signal acquisition device and method |
| CN117368621A (en) * | 2023-12-06 | 2024-01-09 | 南方电网科学研究院有限责任公司 | Casing state monitoring method and device, storage medium and computer equipment |
-
2013
- 2013-05-06 CN CN 201320239024 patent/CN203232124U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105182153A (en) * | 2015-08-24 | 2015-12-23 | 国网天津静海供电有限公司 | Grounding wire fault indicator for distribution transformer |
| CN106383466A (en) * | 2016-09-28 | 2017-02-08 | 卡斯柯信号有限公司 | Threshold-adjustable security signal acquisition device and method |
| CN106383466B (en) * | 2016-09-28 | 2024-02-13 | 卡斯柯信号有限公司 | Threshold-adjustable safety signal acquisition device and method |
| CN117368621A (en) * | 2023-12-06 | 2024-01-09 | 南方电网科学研究院有限责任公司 | Casing state monitoring method and device, storage medium and computer equipment |
| CN117368621B (en) * | 2023-12-06 | 2024-02-23 | 南方电网科学研究院有限责任公司 | Casing state monitoring method and device, storage medium and computer equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131009 |
|
| CX01 | Expiry of patent term |