CN106053894A - Main transformer bushing end screen adapter - Google Patents
Main transformer bushing end screen adapter Download PDFInfo
- Publication number
- CN106053894A CN106053894A CN201610602160.2A CN201610602160A CN106053894A CN 106053894 A CN106053894 A CN 106053894A CN 201610602160 A CN201610602160 A CN 201610602160A CN 106053894 A CN106053894 A CN 106053894A
- Authority
- CN
- China
- Prior art keywords
- main transformer
- open
- circuit protector
- chip microcomputer
- bottom shielding
- 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.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
Abstract
The invention relates to a main transformer bushing end screen adapter, which comprises a wiring plate arranged at the lower part of the main transformer, a protection resistor R, an open circuit protector, a single chip computer and a power supply module. The wiring plate is provided with two terminals Q1 and Q2 with a knife switch arranged between the Q1 and Q2; the terminal Q1 is connected to a main transformer bushing end screen through a wire and the terminal Q2 is connected with a grounding end; the main transformer bushing end screen is connected to the grounding end through the open circuit protector. The inlet terminal of the open circuit protector is connected to the main transformer bushing end screen while the outlet terminal is connected to the grounding end; the power supply output end of the single chip computer is connected to the inlet terminal of the open circuit protector through the protection resistor R; the voltage test port P1 of the single chip computer and the grounding end GND are connected respectively to the inlet terminal and the outlet terminal of the open circuit protector to detect the voltage at two ends of the open circuit protector. The power supply module provides the power supply for the single chip microcomputer. With the technology of the invention, the test personnel can do tests without ascending operation, and can avoid fault in tests, thus reducing security risks.
Description
Technical field
The present invention relates to electric power project engineering field, particularly relate 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.Electric power becomes frequently
Depressor sleeve pipe fault makes electric power enterprise attach great importance to the defects detection of sleeve of main transformer, and measures medium in sleeve pipe preventive trial and damage
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 of the electrical equipments such as transformator, electromotor and chopper is tested in " power equipment preventive trial code "
All specify.The dielectric loss on-line monitoring technique being applied to capacitive power equipment is applied the most, and right
Find the insulation defect of electrical equipment in time, it is ensured that the safe operation of equipment serves good effect.
Current when doing main transformer test on bushing, because main transformer sleeve pipe is more than main transformer platform district, typically can be more than two meters
Highly, testing crew must be ascended a height operation, simultaneously as test needs to be connected in the end shield of sleeve pipe p-wire, and due to sleeve pipe
Producer is different, and main transformer bottom shielding of bushing configurations often brings all difficulties to wiring.Cause testing that difficulty is big, examination
Test efficiency low, and testing crew is faced with risk of ascending a height.
Summary of the invention
Based on this, it is necessary to for the test problem that difficulty is big, test efficiency is low, it is provided that 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 patch panel below main transformer, protective resistance R, open-circuit protector, single-chip microcomputer and power module；
Described patch panel 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
Being connected to earth terminal 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, be used for detecting open-circuit protector both end voltage；
Described power module connects single-chip microcomputer, it is provided that 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 tries
Testing, described single-chip microcomputer is by the end of incoming cables of described protective resistance R output detections power supply to open-circuit protector, and detects described open circuit
The magnitude of voltage at protector two ends, judges the running status of described open-circuit protector according to described magnitude of voltage.
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, without operation of ascending a height, reduces test difficulty, test efficiency height, and the duty of adapter obtains in real time
Monitoring, it is to avoid fault during test occurs, reduces security risk.
Accompanying drawing explanation
Fig. 1 is the structural representation of the main transformer bottom shielding of bushing adapter of the present invention；
Fig. 2 is the structural representation of the main transformer bottom shielding of bushing adapter of an embodiment.
Detailed description of the invention
Illustrate the embodiment of the main transformer bottom shielding of bushing adapter of the present invention below in conjunction with the accompanying drawings.
With reference to shown in Fig. 1, Fig. 1 is the structural representation of the main transformer bottom shielding of bushing adapter of the present invention, including:
It is placed in the patch panel below main transformer, protective resistance R, open-circuit protector, single-chip microcomputer and power module；
Described patch panel 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
Being connected to earth terminal 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, be used for detecting open-circuit protector both end voltage；
Described power module (lithium battery can be used to be powered) connects single-chip microcomputer, it is provided that 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 tries
Testing, described single-chip microcomputer is by the end of incoming cables of described protective resistance R output detections power supply VCC (such as 5V) to open-circuit protector, and examines
Survey the magnitude of voltage at described open-circuit protector two ends, judge the running status of described open-circuit protector according to described magnitude of voltage.
Technical scheme, draws two lines from main transformer bottom shielding of bushing, guides to the patch panel below transformator
On, the terminals Q1 that is immediately directed against on patch panel, one is connected to earth terminal by open-circuit protector, by earth terminal again
Being connected to terminals Q2, patch panel is provided with disconnecting link S, is switched on or switched off Q1, Q2, Q1, Q2 short circuit during disconnecting link S Guan Bi, and disconnecting link S breaks
When opening, Q1, Q2 disconnect, and main transformer is when properly functioning, and main transformer bottom shielding of bushing must be ground connection, otherwise run time Mo
Screen there may be higher voltage, so can damage main transformer bottom shielding of bushing even sleeve pipe, therefore, cutter when main transformer runs
Lock S is in closure state.Open-circuit protector shields, when line terminals Q1 cannot guarantee ground connection, and main transformer sleeve pipe
The high potential meeting open-circuit protector that end shield occurs turns on thus forces main transformer bottom shielding of bushing ground connection, thus prevents main transformer
Bottom shielding of bushing damages because of suspension high-potential.
Thus, when power failure carries out sleeve of main transformer test, testing crew has only on the patch panel that transformator is following will
Disconnecting link S disconnects, then connects test apparatus and just can test sleeve pipe, and without ascending a height, reduces operating risk.Due to needs
The running status of monitoring open-circuit protector, is confirmed not damage, is monitored by single-chip microcomputer, when carrying out sleeve of main transformer
During test, when testing crew disconnects disconnecting link S, protector is the most short-circuit, and now, the detection power supply of single-chip microcomputer one direct current of output is given
Protector, by the voltage at single-chip microcomputer detection open-circuit protector two ends, and then judges the running status of open-circuit protector, it is ensured that test
In be not damaged by.Testing crew just can stop testing according to its running status, ensure equipment safety 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；Dual grounds is realized, really with two disconnecting links
Protect reliability service.
In one embodiment, described open-circuit protector includes a diode or the diode of multiple series connection.
In one embodiment, described main transformer bottom shielding of bushing adapter can also include the LCD connecting single-chip microcomputer
(Liquid Crystal Display, liquid crystal display), for showing the operation of described open-circuit protector that single-chip microcomputer exports
State.
In one embodiment, described main transformer bottom shielding of bushing adapter can also include the GPRS connecting single-chip microcomputer
(General Packet Radio Service, general packet radio service technology) module, for exporting described single-chip microcomputer
The running status of described open-circuit protector send backstage afield and be observed and analyze.
In one embodiment, described main transformer bottom shielding of bushing adapter, when main transformer is properly functioning, described list
Sheet machine is in off-position；When main transformer is properly functioning, open-circuit protector two ends are short-circuit conditions, and single-chip microcomputer can be in disconnected
Electricity condition, therefore without detecting 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 detections power supply to open-circuit protector；Measure open circuit by test switch to protect
Protect device both end voltage, by teletransmission switch, the running status of described open-circuit protector is sent backstage afield.
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, and V0 is the diode turn-on voltage that open-circuit protector uses, and n is for opening
Road protector uses the quantity of diode.
In one embodiment, in described patch panel is placed in a junction box；It is easily installed use.
The technical scheme of above-described embodiment, patch panel is placed in the junction box that main transformer is following, and disconnecting link uses two
Disconnecting link S1, S2, dual grounds is easy to reliability service, and open-circuit protector uses one or more Diode series.
When main transformer is properly functioning, open-circuit protector two ends are short-circuit conditions, when carrying out sleeve of main transformer test, and examination
The personnel of testing disconnect disconnecting link S1, S2, open-circuit protector the most no longer short circuit, 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, first can pass through power-on switch (" logical in figure
Electricity " button) carry out power-on, after turning on the power, the detection power supply of single-chip microcomputer one 5V of output is 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 (" measuring " button in figure)
Voltage, built-in A/D module converts voltages into processor of single chip computer and calculates and judge, thus judges that open-circuit protector is
No have puncture.
Can judge in the following way, if V1/V0=n, then judge that open-circuit protector is in normal operating conditions.
Such as, 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 divided by 0.7 currently has several diode normally to work.
It is possible to further by this numerical monitor on LCD, it is simple to testing crew observes the real time operation of open-circuit protector
State.
Further, for the ease of backstage observation and analysis, by GPRS module, can be switched (" remote in figure by teletransmission
Pass " button) start transmission, the status information measured just can be sent to a distant place by UART-GPRS by such single-chip microcomputer
On equipment (such as mobile phone).
Each technical characteristic of embodiment described above can combine arbitrarily, for making description succinct, not to above-mentioned reality
The all possible combination of each technical characteristic executed in example is all described, but, as long as the combination of these technical characteristics is not deposited
In contradiction, all it is considered to be the scope that this specification is recorded.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes more concrete and detailed, but also
Can not therefore be construed as limiting the scope of the patent.It should be pointed out that, come for those of ordinary skill in the art
Saying, without departing from the inventive concept of the premise, it is also possible to make some deformation and improvement, these broadly fall into the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a main transformer bottom shielding of bushing adapter, it is characterised in that including:
It is placed in the patch panel below main transformer, protective resistance R, open-circuit protector, single-chip microcomputer and power module；
Described patch panel is provided with two terminals of Q1, Q2, connects disconnecting link S between described Q1, Q2 terminals；Described terminals Q1 leads to
Crossing 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, is used for detecting open-circuit protector both end voltage；
Described power module connects single-chip microcomputer, it is provided that 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 is by the end of incoming cables of described protective resistance R output detections power supply to open-circuit protector, and detects described open circuit guarantor
Protect the magnitude of voltage at device two ends, judge the running status of described open-circuit protector according to described magnitude of voltage.
Main transformer bottom shielding of bushing adapter the most according to claim 1, it is characterised in that described disconnecting link S includes side by side
Disconnecting link S1, S2.
Main transformer bottom shielding of bushing adapter the most according to claim 1, it is characterised in that described open-circuit protector includes
One diode or the diode of multiple series connection.
Main transformer bottom shielding of bushing adapter the most according to claim 1, it is characterised in that also include connecting single-chip microcomputer
LCD, for showing the running status of described open-circuit protector that single-chip microcomputer exports.
Main transformer bottom shielding of bushing adapter the most according to claim 1, it is characterised in that also include connecting single-chip microcomputer
GPRS module, the running status of the described open-circuit protector for being exported by described single-chip microcomputer sends backstage afield and is observed
And analysis.
Main transformer bottom shielding of bushing adapter the most according to claim 1, it is characterised in that properly functioning at main transformer
Time, described single-chip microcomputer is in off-position.
7. according to the main transformer bottom shielding of bushing adapter described in claim 4 to 6, it is characterised in that 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, connected the power supply of single-chip microcomputer, single-chip microcomputer output detections power supply by power-on switch
End of incoming cables to open-circuit protector；Measure open-circuit protector both end voltage by test switch, opened described by teletransmission switch
The running status of road protector sends backstage afield.
Main transformer bottom shielding of bushing adapter the most according to claim 3, 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, then judge that described open-circuit protector is in normal work
State；
Wherein, V1 is open-circuit protector both end voltage, and V0 is the diode turn-on voltage that open-circuit protector uses, and n protects for open circuit
Protect device and use the quantity of diode.
Main transformer bottom shielding of bushing adapter the most according to claim 1, it is characterised in that described detection power supply is 5V；
Described power module uses lithium battery to be powered.
Main transformer bottom shielding of bushing adapter the most according to claim 1, it is characterised in that described patch panel is placed in one
In junction box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610602160.2A CN106053894A (en) | 2016-07-26 | 2016-07-26 | Main transformer bushing end screen adapter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610602160.2A CN106053894A (en) | 2016-07-26 | 2016-07-26 | Main transformer bushing end screen adapter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106053894A true CN106053894A (en) | 2016-10-26 |
Family
ID=57418711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610602160.2A Pending CN106053894A (en) | 2016-07-26 | 2016-07-26 | Main transformer bushing end screen adapter |
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| CN (1) | CN106053894A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107576850A (en) * | 2017-09-07 | 2018-01-12 | 国家电网公司江苏省电力公司扬州供电公司 | Transformer Bushing Tap Insulation test distributed control device |
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| CN101365955A (en) * | 2005-09-05 | 2009-02-11 | 格拉斯哥喀里多尼亚大学校董事会 | High voltage insulation monitoring sensor |
| US20110234243A1 (en) * | 2010-03-29 | 2011-09-29 | Eduardo Pedrosa Santos | Introduced in monitoring system of dielectric state of high voltage equipments with capacitive insulation, such as condensive bushings, current transformers, potential transformers and similar |
| CN102971636A (en) * | 2010-06-29 | 2013-03-13 | 特英普科技有限公司 | Apparatus and method for measuring the dissipation factor of an insulator |
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2016
- 2016-07-26 CN CN201610602160.2A patent/CN106053894A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101365955A (en) * | 2005-09-05 | 2009-02-11 | 格拉斯哥喀里多尼亚大学校董事会 | High voltage insulation monitoring sensor |
| US20110234243A1 (en) * | 2010-03-29 | 2011-09-29 | Eduardo Pedrosa Santos | Introduced in monitoring system of dielectric state of high voltage equipments with capacitive insulation, such as condensive bushings, current transformers, potential transformers and similar |
| CN102971636A (en) * | 2010-06-29 | 2013-03-13 | 特英普科技有限公司 | Apparatus and method for measuring the dissipation factor of an insulator |
Non-Patent Citations (2)
| Title |
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| 邹国平 等: "变压器套管在线监测接口适配器的研究", 《浙江电力》 * |
| 陈玉 等: "变电站电力设备电气绝缘综合在线监测方案设计与研究", 《2006全国电工测试技术学术交流会论文集》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107576850A (en) * | 2017-09-07 | 2018-01-12 | 国家电网公司江苏省电力公司扬州供电公司 | Transformer Bushing Tap Insulation test distributed control device |
| CN107576850B (en) * | 2017-09-07 | 2024-02-09 | 国网江苏省电力有限公司扬州供电分公司 | Insulation test sub-control device for transformer bushing end screen |
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Application publication date: 20161026 |
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| RJ01 | Rejection of invention patent application after publication |