CN205941610U - Main transformer bushing tap adapter - Google Patents
Main transformer bushing tap adapter Download PDFInfo
- Publication number
- CN205941610U CN205941610U CN201620802000.8U CN201620802000U CN205941610U CN 205941610 U CN205941610 U CN 205941610U CN 201620802000 U CN201620802000 U CN 201620802000U CN 205941610 U CN205941610 U CN 205941610U
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- China
- Prior art keywords
- main transformer
- open
- circuit protector
- chip microcomputer
- bottom shielding
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Abstract
The utility model relates to a main transformer bushing tap adapter, include: arrange the wiring board of main transformer below in, protect resistance R, open circuit protection ware, singlechip and power module, the wiring board is equipped with Q1, two wiring ends of Q2, connects switch S between Q1, the Q2 wiring end, wiring end Q1 is connected to main transformer bushing tap through the wire, and wiring end Q2 connects the earthing terminal, and main transformer bushing tap is connected to the earthing terminal through the open circuit protection ware, and main transformer bushing tap, leading -out terminal connection earthing terminal are connected to the inlet wire end of open circuit protection ware, the inlet wire end of open circuit protection ware is connected to the power output end of singlechip through protection resistance R, the voltage tester port P1 of singlechip, earthing terminal GND correspond inlet wire end, the leading -out terminal of connecting the open circuit protection ware respectively, detect open circuit protection ware both ends voltage, power module provides the singlechip required power. The utility model discloses a technique, testing personnel need not the operation of ascending a height, and test efficiency is high, can avoid the trouble when experimental, has reduced safe risk.
Description
Technical field
The utility model is related to electric power project engineering field, more particularly to a kind of main transformer bottom shielding of bushing adapter.
Background technology
Power transformer is the capital equipment of power system, and its safe operation is significant.Frequently electric power becomes
Depressor sleeve pipe fault makes electric power enterprise attach great importance to the defects detection of sleeve of main transformer, and in sleeve pipe preventive trial, measurement medium damages
Consumption factor has higher sensitivity to reflection casing imperfection, has therefore obtained wide in electric power enterprise and power equipment manufacturer
General application.The dielectric loss test of the electrical equipments such as transformer, generator and breaker exists《Power equipment preventive trial code》
All specify.The dielectric loss on-line monitoring technique being applied to capacitive power equipment is also applied in practice, and right
Find the insulation defect of electrical equipment it is ensured that the safe operation of equipment serves good effect in time.
Currently when doing main transformer test on bushing, because main transformer sleeve pipe is more than main transformer platform area, typically can exceed two meters
Highly, testing crew must be ascended a height operation, simultaneously as test needs p-wire is connected in the end shield of sleeve pipe, and due to sleeve pipe
Producer is different, and main transformer bottom shielding of bushing configurations often bring all difficulties to wiring.Lead to test that difficulty is big, examination
Test efficiency low, and testing crew is faced with risk of ascending a height.
Utility model content
Based on this it is necessary to for the test problem that difficulty is big, test efficiency is low, provide a kind of main transformer bottom shielding of bushing
Adapter.
A kind of main transformer bottom shielding of bushing adapter, including：
It is placed in the terminal plate below main transformer, protective resistance R, open-circuit protector, single-chip microcomputer and power module；
Described terminal plate is provided with two terminals of Q1, Q2, connects disconnecting link S between described Q1, Q2 terminals；Described terminals
Q1 is wired to main transformer bottom shielding of bushing, and described terminals Q2 connects earth terminal, described main transformer bottom shielding of bushing
Earth terminal is connected to by open-circuit protector, wherein, the end of incoming cables of open-circuit protector connects described main transformer bottom shielding of bushing, goes out
Line end connects described earth terminal；
The power output end of described single-chip microcomputer connects the end of incoming cables of open-circuit protector by described protective resistance R；
The voltage tester port P1 of described single-chip microcomputer, earth terminal GND are connected respectively the inlet wire of described open-circuit protector
End, leading-out terminal, for detecting open-circuit protector both end voltage；
Described power module connects single-chip microcomputer, provides power supply needed for single-chip microcomputer；
When power failure carries out sleeve of main transformer test, described disconnecting link S disconnects, and described terminals Q1 joint test instrument is tried
Test, described single-chip microcomputer exports detection power supply to the end of incoming cables of open-circuit protector by described protective resistance R, by voltage tester end
Mouth P1, earth terminal GND detection open-circuit protector both end voltage, and export the running state information of described open-circuit protector.
Above-mentioned main transformer bottom shielding of bushing adapter, when power failure carries out sleeve of main transformer test, overcomes what wiring brought
Difficulty, testing crew need not be ascended a height operation, reduces that test difficulty, test efficiency are high, and the working condition of adapter obtains in real time
Monitoring, it is to avoid fault during test occurs, and reduces security risk.
Brief description
Fig. 1 is the structural representation of main transformer bottom shielding of bushing adapter of the present utility model；
Fig. 2 is the structural representation of the main transformer bottom shielding of bushing adapter of an embodiment.
Specific embodiment
Illustrate the embodiment of main transformer bottom shielding of bushing adapter of the present utility model below in conjunction with the accompanying drawings.
With reference to shown in Fig. 1, Fig. 1 is the structural representation of main transformer bottom shielding of bushing adapter of the present utility model, including：
It is placed in the terminal plate below main transformer, protective resistance R, open-circuit protector, single-chip microcomputer and power module；
Described terminal plate is provided with two terminals of Q1, Q2, connects disconnecting link S between described Q1, Q2 terminals；Described terminals
Q1 is wired to main transformer bottom shielding of bushing, and described terminals Q2 connects earth terminal, described main transformer bottom shielding of bushing
Earth terminal is connected to by open-circuit protector, wherein, the end of incoming cables of open-circuit protector connects described main transformer bottom shielding of bushing, goes out
Line end connects described earth terminal；
The power output end of described single-chip microcomputer connects the end of incoming cables of open-circuit protector by described protective resistance R；
The voltage tester port P1 of described single-chip microcomputer, earth terminal GND are connected respectively the inlet wire of described open-circuit protector
End, leading-out terminal, for detecting open-circuit protector both end voltage；
Described power module (can be powered using lithium battery) connects single-chip microcomputer, provides power supply needed for single-chip microcomputer；
When power failure carries out sleeve of main transformer test, described disconnecting link S disconnects, and described terminals Q1 joint test instrument is tried
Test, described single-chip microcomputer exports detection power supply VCC (as 5V) to the end of incoming cables of open-circuit protector by described protective resistance R, passes through
Voltage tester port P1, earth terminal GND detect open-circuit protector both end voltage, and export the running status of described open-circuit protector
Information.
The technical solution of the utility model, draws two lines from main transformer bottom shielding of bushing, guides to connecing below transformer
On line plate, the terminals Q1 that is immediately directed against on terminal plate, one is connected to earth terminal by open-circuit protector, by earth terminal
Place is connected to terminals Q2, and terminal plate is provided with disconnecting link S, is switched on or switched off Q1, Q2, Q1, Q2 short circuit during disconnecting link S closure, knife
When lock S disconnects, Q1, Q2 disconnect, and in normal operation, main transformer bottom shielding of bushing must be ground connection to main transformer, otherwise run
When end shield might have higher voltage, so can damage main transformer bottom shielding of bushing or even sleeve pipe, therefore, main transformer run
When disconnecting link S be in closure state.Open-circuit protector shields, when line terminals Q1 cannot guarantee ground connection, main transformer
The high potential that bottom shielding of bushing occurs can open-circuit protector turn on thus forcing main transformer bottom shielding of bushing to be grounded, thus preventing main transformer
Depressor bottom shielding of bushing damages because of suspension high-potential.
Thus, when power failure carries out sleeve of main transformer test, testing crew only needs to will on the following terminal plate of transformer
Disconnecting link S disconnects, then connects test apparatus and just sleeve pipe can be tested, and need not ascend a height, and reduces operating risk.Due to needing
The running status of monitoring open-circuit protector, is confirmed not damage at the trial, is monitored by single-chip microcomputer, when carrying out sleeve of main transformer
During test, when testing crew disconnects disconnecting link S, protector is no longer short-circuit, now, single-chip microcomputer export the detection power supply of a direct current to
Protector, by the voltage at monolithic machine testing open-circuit protector two ends, and then judges the running status of open-circuit protector it is ensured that testing
In be not damaged by.Testing crew just can stop being tested, ensure equipment safety according to its running status when damaged.
With reference to shown in Fig. 2, Fig. 2 is the structural representation of the main transformer bottom shielding of bushing adapter of an embodiment.
In one embodiment, described disconnecting link S includes disconnecting link S1, S2 arranged side by side；Realize dual grounds with two disconnecting links, really
Protect reliability service.
In one embodiment, described open-circuit protector includes the diode of a diode or multiple series connection.
In one embodiment, described main transformer bottom shielding of bushing adapter can also include connecting the LCD of single-chip microcomputer
(Liquid Crystal Display, liquid crystal display), for showing the operation of the described open-circuit protector of single-chip microcomputer output
State.
In one embodiment, described main transformer bottom shielding of bushing adapter can also include connecting the GPRS of single-chip microcomputer
(General Packet Radio Service, general packet radio service technology) module, for exporting described single-chip microcomputer
Described open-circuit protector running status send afield backstage be observed and analyze.
In one embodiment, described main transformer bottom shielding of bushing adapter, when main transformer normally runs, described list
Piece machine is in off-position；When main transformer normally runs, open-circuit protector two ends are short-circuit conditions, and single-chip microcomputer can be in disconnected
Electricity condition, therefore need not detect open-circuit protector both end voltage.
In one embodiment, described main transformer bottom shielding of bushing adapter can also include control panel；Described control
Panel includes：Power-on switch, test switch and teletransmission switch；When power failure carries out sleeve of main transformer test, connect by power-on switch
The power supply of logical single-chip microcomputer, the end of incoming cables of single-chip microcomputer output detection power supply to open-circuit protector；Protected by test switch measurement open circuit
The running status of described open-circuit protector is sent afield backstage by teletransmission switch by shield device both end voltage.
In one embodiment, when single-chip microcomputer judges the running status of described open-circuit protector according to described magnitude of voltage, if
V1/V0=n, then judge that described open-circuit protector is in normal operating conditions；
Wherein, V1 is open-circuit protector both end voltage, the diode turn-on voltage that V0 uses for open-circuit protector, and n is to open
Road protector uses the quantity of diode.
In one embodiment, described terminal plate is placed in a junction box；It is easily installed use.
The technical scheme of above-described embodiment, terminal plate is placed in the following junction box of main transformer, and disconnecting link adopts two
Disconnecting link S1, S2, dual grounds are easy to reliability service, and open-circuit protector adopts one or more Diode series.
When main transformer normally runs, open-circuit protector two ends are short-circuit conditions, when carrying out sleeve of main transformer test, examination
The personnel that test disconnect disconnecting link S1, S2, open-circuit protector just no longer short circuit, to judge the diode in protector now by single-chip microcomputer
Either with or without puncturing.For the ease of operation, can be controlled by control panel, (in figure is " logical can to pass through power-on switch first
Electricity " button) carry out power-on, after turning on the power, single-chip microcomputer exports the detection power supply of a 5V to open-circuit protector, protective resistance
R carries out current limliting.
Detection, single-chip microcomputer examination port P1, earth terminal GND detection can be started by test switch (in figure " measures " button)
Voltage, built-in A/D module converts voltages into processor of single chip computer and is calculated and judge, thus judging that open-circuit protector is
No have puncture.
Can be judged in the following way, if V1/V0=n, be judged that open-circuit protector is in normal operating conditions.
For example, during a diode current flow, voltage is generally 0.7V, measures the current both end voltage of open-circuit protector, then comes
Just can draw currently there are several diode normal works divided by 0.7.
Observe the real-time working of open-circuit protector it is possible to further this numerical monitor, on LCD, being easy to testing crew
State.
Further, for the ease of backstage observation with analyze, by GPRS module, can switch by teletransmission that (in figure is " far
Pass " button) starting transmission, the status information measuring just can be sent to a distant place by UART-GPRS by such single-chip microcomputer
On equipment (as mobile phone).
Each technical characteristic of embodiment described above can arbitrarily be combined, for making description succinct, not to above-mentioned reality
The all possible combination of each technical characteristic applied in example is all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all it is considered to be the scope of this specification record.
Embodiment described above only have expressed several embodiments of the present utility model, and its description is more concrete and detailed,
But therefore can not be interpreted as the restriction to utility model patent scope.It should be pointed out that the common skill for this area
For art personnel, without departing from the concept of the premise utility, some deformation can also be made and improve, these broadly fall into
Protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be defined by claims.
Claims (10)
1. a kind of main transformer bottom shielding of bushing adapter is it is characterised in that include：
It is placed in the terminal plate below main transformer, protective resistance R, open-circuit protector, single-chip microcomputer and power module；
Described terminal plate is provided with two terminals of Q1, Q2, connects disconnecting link S between described Q1, Q2 terminals；Described terminals Q1 leads to
Cross wire and be connected to main transformer bottom shielding of bushing, described terminals Q2 connects earth terminal, and described main transformer bottom shielding of bushing passes through
Open-circuit protector is connected to earth terminal, and wherein, the end of incoming cables of open-circuit protector connects described main transformer bottom shielding of bushing, leading-out terminal
Connect described earth terminal；
The power output end of described single-chip microcomputer connects the end of incoming cables of open-circuit protector by described protective resistance R；
The voltage tester port P1 of described single-chip microcomputer, earth terminal GND are connected respectively the end of incoming cables of described open-circuit protector, go out
Line end, for detecting open-circuit protector both end voltage；
Described power module connects single-chip microcomputer, provides power supply needed for single-chip microcomputer；
When power failure carries out sleeve of main transformer test, described disconnecting link S disconnects, and described terminals Q1 joint test instrument is tested,
Described single-chip microcomputer exports detection power supply to the end of incoming cables of open-circuit protector by described protective resistance R, by voltage tester port
P1, earth terminal GND detect open-circuit protector both end voltage, and export the running state information of described open-circuit protector.
2. main transformer bottom shielding of bushing adapter according to claim 1 is it is characterised in that described disconnecting link S includes side by side
Disconnecting link S1, S2.
3. main transformer bottom shielding of bushing adapter according to claim 1 is it is characterised in that described open-circuit protector includes
One diode or the diode of multiple series connection.
4. main transformer bottom shielding of bushing adapter according to claim 1 is it is characterised in that also include connecting single-chip microcomputer
LCD, for showing the running status of the described open-circuit protector of single-chip microcomputer output.
5. main transformer bottom shielding of bushing adapter according to claim 1 is it is characterised in that also include connecting single-chip microcomputer
GPRS module, the running status of the described open-circuit protector for exporting described single-chip microcomputer sends afield backstage and is observed
And analysis.
6. main transformer bottom shielding of bushing adapter according to claim 1 is it is characterised in that normally run in main transformer
When, described single-chip microcomputer is in off-position.
7. the main transformer bottom shielding of bushing adapter according to any one of claim 4 to 6 is it is characterised in that also include controlling
Panel processed；
Described control panel includes：Power-on switch, test switch and teletransmission switch；
When power failure carries out sleeve of main transformer test, connect the power supply of single-chip microcomputer, single-chip microcomputer output detection power supply by power-on switch
End of incoming cables to open-circuit protector；By test switch measurement open-circuit protector both end voltage, opened described by teletransmission switch
The running status of road protector sends afield backstage.
8. main transformer bottom shielding of bushing adapter according to claim 3 is it is characterised in that single-chip microcomputer is according to described voltage
When value judges the running status of described open-circuit protector, if V1/V0=n, judge that described open-circuit protector is in normal work
State；
Wherein, V1 is open-circuit protector both end voltage, the diode turn-on voltage that V0 uses for open-circuit protector, and n is that open circuit is protected
Shield device uses the quantity of diode.
9. main transformer bottom shielding of bushing adapter according to claim 1 is it is characterised in that described detection power supply is 5V；
Described power module is powered using lithium battery.
10. main transformer bottom shielding of bushing adapter according to claim 1 is it is characterised in that described terminal plate is placed in one
In junction box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620802000.8U CN205941610U (en) | 2016-07-26 | 2016-07-26 | Main transformer bushing tap adapter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620802000.8U CN205941610U (en) | 2016-07-26 | 2016-07-26 | Main transformer bushing tap adapter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205941610U true CN205941610U (en) | 2017-02-08 |
Family
ID=57927379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620802000.8U Active CN205941610U (en) | 2016-07-26 | 2016-07-26 | Main transformer bushing tap adapter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205941610U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108362945A (en) * | 2018-04-18 | 2018-08-03 | 广东电网有限责任公司 | A kind of bushing shell for transformer distal end power failure experimental rig and method |
-
2016
- 2016-07-26 CN CN201620802000.8U patent/CN205941610U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108362945A (en) * | 2018-04-18 | 2018-08-03 | 广东电网有限责任公司 | A kind of bushing shell for transformer distal end power failure experimental rig and method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |