CN106483487A - A kind of on-line monitoring Intelligent current transformer - Google Patents
A kind of on-line monitoring Intelligent current transformer Download PDFInfo
- Publication number
- CN106483487A CN106483487A CN201610795633.5A CN201610795633A CN106483487A CN 106483487 A CN106483487 A CN 106483487A CN 201610795633 A CN201610795633 A CN 201610795633A CN 106483487 A CN106483487 A CN 106483487A
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- China
- Prior art keywords
- current transformer
- terminal board
- sensor
- dielectric loss
- casing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/02—Testing or calibrating of apparatus covered by the other groups of this subclass of auxiliary devices, e.g. of instrument transformers according to prescribed transformation ratio, phase angle, or wattage rating
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention discloses a kind of on-line monitoring Intelligent current transformer, including current transformer body, casing, combination sensor, end shield terminal board, terminal board, dielectric loss sensor, protection device and ground terminal.The fuel tank lower end of wherein current transformer body is provided with casing, and the communication connection of combination sensor and end shield realized by end shield terminal board.Combination sensor and the integrated setting of dielectric loss measuring instrument and current transformer, make combination sensor and dielectric loss measuring instrument as a part for current transformer, provide shelf depreciation current transformer being in operation under electriferous state and the hardware condition of dielectric loss test, thus playing the effect that can conveniently detect shelf depreciation and dielectric loss in charge process, make the live testing of current transformer convenient, safely and accurate, transformer power supply need not be disconnected, thus also just reducing due to the economic loss brought that has a power failure.
Description
Technical field
The present invention relates to electrical equipment technical field, particularly to a kind of on-line monitoring Intelligent current transformer.
Background technology
For test of when realizing not having a power failure, the current transformer running being tested, the electricity with homophase relative method as principle
Appearance type transformer equipment dielectric loss live testing technology and the powered Partial Discharge Detecting Technology of high-frequency method transformer are completing mould
Start in electrical network pilot conversion after intending test and verifying work, obtain certain effect, but fail spread, its reason is
During the said equipment live testing, need to access the testing equipments such as dielectric loss measuring instrument, partial discharge detection instrument or ultrahigh frequency partial discharge detector,
The installation of above-mentioned testing equipment needs to have a power failure, and brings inconvenience to installation, and brings certain economic loss.Additionally,
Terminal box installation is carried out on some equipment or sensor access can affect equipment dependability, cause potential potential safety hazard, therefore, such as
What solves the problems, such as testing equipment to access during current transformer needs to have a power failure and integrity problem, becomes those skilled in the art
Technical problem urgently to be resolved hurrily.
Content of the invention
In view of this, the invention provides a kind of on-line monitoring Intelligent current transformer, access electricity to solve testing equipment
Problem and the integrity problem having a power failure is needed during current transformer..
For achieving the above object, the present invention provides following technical scheme：
A kind of on-line monitoring Intelligent current transformer, including：
Current transformer body；
It is arranged on the casing of the fuel tank lower end of described current transformer；
It is arranged on the combination sensor in described casing, described combination sensor includes superfrequency office and puts sensor and high frequency
Sensor is put in office；
It is arranged on the end shield terminal board of described tank bottoms, the copper guide rod of described end shield terminal board is located in described fuel tank
One end is connected with described end shield lead, and biography is combined with described in one end that the copper guide rod of described end shield terminal board is located at outside described fuel tank
Sensor communicates to connect；
Be arranged on the terminal board in described casing, described terminal board from described casing away from described fuel tank one end to described
Fuel tank extends, and described combination sensor is fixed on described terminal board；
It is arranged on the dielectric loss sensor on described terminal board, described dielectric loss sensor and described end shield communication connection；
It is arranged on described terminal board and be used for controlling described end shield to convey signal and reliable ground to described dielectric loss sensor
Protection device；
It is arranged on the ground terminal of described fuel tank bottom.
Preferably, in above-mentioned on-line monitoring Intelligent current transformer, described protection device includes：Disconnecting link and with described knife
The short circuit piece that lock connects, described short circuit piece one end is connected with the end shield lead through described dielectric loss sensor, described short circuit piece
The short circuit piece that the other end is connected with the earth lead bypassing described dielectric loss sensor.
Preferably, in above-mentioned on-line monitoring Intelligent current transformer, described terminal board is provided with for by described group
Close the first lead-out terminal of signal output of sensor and be used for the second outfan of the signal output of described dielectric loss sensor
Son.
Preferably, in above-mentioned on-line monitoring Intelligent current transformer, the powered of described current transformer body takes oil dress
Put and be arranged in described casing.
Preferably, in above-mentioned on-line monitoring Intelligent current transformer, described current transformer body is provided with insurance
Thick stick.
Preferably, in above-mentioned on-line monitoring Intelligent current transformer, described terminal board is by vertical with described terminal board
The column of arrangement is connected with described casing, and described terminal board is rectangular end daughter board, and four angles of described rectangular end daughter board are all provided with
It is equipped with described column.
Preferably, in above-mentioned on-line monitoring Intelligent current transformer, described casing offers cabinet door, described casing
It is provided with sealing strip, described cabinet door is positioned opposite with the secondary terminal box of described current transformer on door.
Preferably, in above-mentioned on-line monitoring Intelligent current transformer, described casing is provided with two locks, described case
Hook for hanging the key opening described lock is provided with body.
From technique scheme as can be seen that the on-line monitoring Intelligent current transformer of present invention offer, mutual including electric current
Sensor body, casing, combination sensor, end shield terminal board, terminal board, dielectric loss sensor, protection device and ground terminal.Wherein
The fuel tank lower end of current transformer body is provided with casing, and the communication connection of combination sensor and end shield realized by end shield terminal board.
It is additionally provided with terminal board, dielectric loss sensor, combination sensor and protection device are arranged on terminal board, combination sensing in casing
Device puts sensor for high frequency office and superfrequency office puts sensor integration combination and formed, mutual to electric current with the cooperation realization of dielectric loss sensor
Test and dielectric loss test are put in the office of sensor.Combination sensor and dielectric loss sensor and the integrated setting of current transformer, make group
Close sensor and dielectric loss sensor as a part for current transformer, there is provided the shelf depreciation to current transformer and medium
The hardware condition of the live testing of loss, thus play the work that can conveniently detect shelf depreciation and dielectric loss in charge process
With, the live testing making current transformer is convenient, safety and accurately, need not disconnect transformer power supply, thus also just reduce by
The economic loss brought in power failure.Ground terminal realizes the effective grounding of end shield it is ensured that the trouble free service of current transformer.Online
During detection, disconnect protection device, seal in dielectric loss measuring instrument, after the completion of test, close protection device；When power failure, prerun, disconnect and protecting
Protection unit, seals in dielectric loss measuring instrument, after the completion of test, closes protection device.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, acceptable
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is on-line monitoring Intelligent current transformer structural representation provided in an embodiment of the present invention；
Fig. 2 is the schematic diagram of combination sensor provided in an embodiment of the present invention and dielectric loss sensor.
1st, current transformer body, 2, combination sensor, 3, end shield terminal board, 4, dielectric loss sensor, 5, protection device, 6,
Ground terminal, 7, powered oil taking apparatus, 8, bumper, 9, casing, 10, terminal board.
Specific embodiment
The invention discloses a kind of on-line monitoring Intelligent current transformer, during solving testing equipment access current transformer
The problem needing to have a power failure.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of protection of the invention.
Refer to Fig. 1-Fig. 2, Fig. 1 is on-line monitoring Intelligent current transformer structural representation provided in an embodiment of the present invention
Figure；Fig. 2 is the schematic diagram of combination sensor provided in an embodiment of the present invention and dielectric loss sensor.
The invention discloses a kind of on-line monitoring Intelligent current transformer, including current transformer body 1, casing 9, combination
Sensor 2, end shield terminal, terminal board 10, dielectric loss sensor 4, protection device 5 and ground terminal 6.
Casing 9 is arranged on the fuel tank lower end of current transformer, is integrated with current transformer.
Combination sensor 2 is arranged in casing 9, and the combination sensor 2 in this programme puts sensor and height for superfrequency office
The combination of sensor is put in frequency office, will superfrequency office put together with sensor puts sensor integration with high frequency office.
End shield terminal board 3 is arranged on the bottom of fuel tank, one end and end shield that the copper guide rod of end shield terminal board 3 is located in fuel tank
Lead connects, and one end that the copper guide rod of end shield terminal board 3 is located at outside fuel tank is communicated to connect with combination sensor 2, i.e. end shield terminal
The communication connection between end shield and combination sensor 2 realized by plate 3.
Terminal board 10 is arranged in casing 9, terminal board 10 from described casing 9 away from described fuel tank one end to described fuel tank
Extend, combination sensor 2 is fixed on terminal board 10, and terminal board 10 provides installation foundation for combination sensor 2.
Dielectric loss sensor 4 is arranged on terminal board 10, and dielectric loss sensor 4 and end shield communication connection are it is preferred that dielectric loss senses
Device 4 is connected by the copper guide rod of terminal board 10 with end shield.
Protection device 5 is arranged on terminal board 10 and is used for controlling end shield to convey signal, on-line checking to dielectric loss sensor 4
When, disconnect protection device 5, seal in dielectric loss measuring instrument, after the completion of test, close protection device 5；When power failure or prerun, disconnect
Protection device 5, seals in dielectric loss measuring instrument, after the completion of test, closes protection device 5；
The on-line monitoring Intelligent current transformer that this programme provides will be mutual with electric current to combination sensor 2 and dielectric loss sensor 4
Sensor body 1 carries out integrated setting, and combination sensor 2 and dielectric loss sensor 4 individually must not be intervened with installation, and combination passes
Sensor 2 and dielectric loss sensor 4 as current transformer a part it is achieved that the office of current transformer is put and dielectric loss powered
Test, and this powered office carrying out puts and does not need to carry out power failure operation with Dielectric Loss Test, thus reduce bringing due to having a power failure
Loss.
Ground terminal 6 is arranged on fuel tank bottom, be capable of the effective grounding of current transformer it is ensured that device use peace
Quan Xing.
This programme eliminates conventional end shield, and the test by having a power failure all is integrated with live testing, and both pass through protection
Device 5 is controlled.
Casing 9 is an airtight space, can accommodate current transformer body 1, combination sensor 2, end shield terminal board
3rd, terminal board 10, dielectric loss sensor 4 and protection device 5, play a protective role to above-mentioned part, improve current transformer simultaneously
Compact conformation degree.
This programme achieves the testing equipments such as dielectric loss measuring instrument, high frequency partial discharge detection instrument and superfrequency partial discharge detection instrument and electricity
Current transformer collaborative work, the reliability of equipment improves.
Protection device 5 includes：Disconnecting link and the short circuit piece being connected with disconnecting link, short circuit piece one end and the end through dielectric loss measuring instrument
Screen lead connects, the short circuit piece that the other end of short circuit piece is connected with the earth lead bypassing dielectric loss measuring instrument.During on-line checking, disconnect
Disconnecting link, seals in dielectric loss measuring instrument, after the completion of test, closes disconnecting link；When power failure, prerun, disconnect disconnecting link, seal in dielectric loss measuring instrument,
After the completion of test, close disconnecting link.
The powered and not charged situation that dielectric loss is tested separately is processed by this programme, adopts Jie in casing 9 during live testing
Damage sensor 4 to be tested, when not charged, need outer access dielectric loss measuring instrument, two joints of dielectric loss measuring instrument and short circuit piece
Link.
Due to disconnecting link can not make current transformer ground connection upon opening so that current transformer to there is certain safety hidden
Suffer from, in order to reduce above-mentioned potential safety hazard, be additionally arranged short circuit piece in this programme so as to remain able to ensure electric current after disconnecting link disconnects
The effective grounding of transformer.
Although short circuit piece can play stable earthing effect, during short circuit piece is connected with dielectric loss measuring instrument
Need to unscrew short circuit piece, now short circuit piece can not play ground connection effect, this is accomplished by disconnecting link closure it is ensured that electromagnetic transformer
Effective grounding, reduce potential safety hazard.
It is provided with terminal board 10 for by the first lead-out terminal of the signal output of combination sensor 2 be used for dielectric loss
Second lead-out terminal of the signal output of sensor 4, information is put in the office that first lead-out terminal achieves combination sensor 2 detection
Effectively transmit, the second lead-out terminal achieves effective transmission of the dielectric loss information of combination sensor 2 detection.
In prior art, end shield seat is exposed to outside the fuel tank of current transformer, bears rain of exposing to the weather in running
Drench, easily corroded, and then damage, bring potential safety hazard to equipment.This programme brings because end shield seat damages to reduce
Potential safety hazard, cancel conventional end shield seat, replace end shield seat using end shield terminal board 3, end shield terminal board 3 is arranged by lead
In fuel tank bottom, end shield terminal board 3 is not contacted with external environment in running, end shield terminal board 3 is served with protection and makees
With reducing potential safety hazard.
The powered oil taking apparatus 7 of current transformer of the prior art are arranged on outside the fuel tank of current transformer, except
Easily impaired outer in installation process, bearing in motor process exposes to the weather drenches with rain and is also easily corroded and damage, and leads to
There is certain potential safety hazard after powered oil taking apparatus 7 life-time service.This programme, in order to reduce above-mentioned hidden danger, takes oil dress by powered
Put 7 to be arranged in casing 9, by casing 9 by powered oil taking apparatus 7 and external environment isolation, thus extend powered taking oil dress
Put 7 service life, reduce potential safety hazard.
In view of the safety of operator, this programme increases on current transformer body 1 and is provided with bumper 8, insurance
Thick stick 8 is U-shaped bumper it is preferred that bumper 8 is arranged on fuel tank upper end.
Terminal board 10 is connected with casing 9 by the column vertical with terminal board 10, and terminal board 10 is rectangular end daughter board, rectangle
Column is provided with four angles of terminal board, column and casing 9 pass through to be welded to connect, and the length of column is about 70mm.Preferably
, terminal board 10 is expoxy glass terminal board 10, and the size of terminal board 10 is 200mm*300mm.
Offer cabinet door on casing 9, the maintenance to equipment in casing 9 for the staff can be facilitated, and cabinet door and electricity
The secondary terminal box of current transformer is positioned opposite, avoids secondary lead wires pipe, it is to avoid cabinet door breaks secondary lead wires pipe when opening.
Sealing strip is provided with cabinet door, realizes being tightly connected of cabinet door and casing 9 opening, to being arranged in casing 9
Sensor and end shield terminal board 3 play a protective role,
Lock is provided with casing 9, casing 9 and cabinet door are attached by lock, the number of lock is two, can
Ensure the firm connection of casing 9 and cabinet door.
Lock, by key operated, in order to avoid key loss, is provided for hanging the hook of key on casing 9.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.
Multiple modifications to these embodiments will be apparent from for those skilled in the art, as defined herein
General Principle can be realized without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention
It is not intended to be limited to the embodiments shown herein, and be to fit to and principles disclosed herein and features of novelty phase one
The scope the widest causing.
Claims (8)
1. a kind of on-line monitoring Intelligent current transformer is it is characterised in that include：
Current transformer body (1)；
It is arranged on the casing (9) of the fuel tank lower end of described current transformer；
It is arranged on the combination sensor (2) in described casing (9), described combination sensor (2) includes superfrequency office and puts sensor
Sensor is put in office with high frequency；
It is arranged on the end shield terminal board (10) (3) of described tank bottoms, the copper guide rod of described end shield terminal board (3) is located at described oil
One end in case is connected with described end shield lead, the copper guide rod of described end shield terminal board (3) be located at one end outside described fuel tank with
Described combination sensor (2) communication connection；
It is arranged on the terminal board (10) in described casing (9), described terminal board (10) is from described casing (9) away from described fuel tank
One end extends to described fuel tank, and described combination sensor (2) is fixed on described terminal board (10)；
It is arranged on the dielectric loss sensor (4) on described terminal board (10), described dielectric loss sensor (4) and described end shield communication link
Connect；
It is arranged on and be used on described terminal board (10) controlling described end shield to realize the protection dress of folding to described dielectric loss sensor (4)
Put (5)；
It is arranged on the ground terminal (6) of described fuel tank bottom.
2. the on-line monitoring Intelligent current transformer according to claim 1 is it is characterised in that described protection device (5) is wrapped
Include：Disconnecting link and the short circuit piece being connected with described disconnecting link, described short circuit piece one end and the end shield lead through described dielectric loss measuring instrument
Connect, the other end of described short circuit piece is connected with the earth lead bypassing described dielectric loss measuring instrument.
3. the on-line monitoring Intelligent current transformer according to claim 1 is it is characterised in that set on described terminal board (10)
It is equipped with for by the first lead-out terminal of the signal output of described combination sensor (2) with for by described dielectric loss sensor (4)
Signal output the second lead-out terminal.
4. on-line monitoring Intelligent current transformer according to claim 1 is it is characterised in that described current transformer body
(1) powered oil taking apparatus (7) are arranged in described casing (9).
5. on-line monitoring Intelligent current transformer according to claim 1 is it is characterised in that described current transformer body
(1) it is provided with bumper (8) on.
6. on-line monitoring Intelligent current transformer according to claim 1 is it is characterised in that described terminal board (10) passes through
Column vertically arranged with described terminal board (10) is connected with described casing (9), and described terminal board (10) is rectangular end daughter board
(10), four angles of described rectangular end daughter board (10) are provided with described column.
7. on-line monitoring Intelligent current transformer according to claim 1 is it is characterised in that open up on described casing (9)
There is casing (9) door, described casing (9) door is provided with sealing strip, described casing (9) door is connect with the secondary of described current transformer
Line box is positioned opposite.
8. on-line monitoring Intelligent current transformer according to claim 1 is it is characterised in that described casing (9) is above arranged
There are two locks, described casing (9) is provided with the hook for hanging the key opening described lock.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610795633.5A CN106483487A (en) | 2016-08-31 | 2016-08-31 | A kind of on-line monitoring Intelligent current transformer |
| CN201710308273.6A CN107229030A (en) | 2016-08-31 | 2017-05-04 | Monitor Intelligent current transformer on-line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610795633.5A CN106483487A (en) | 2016-08-31 | 2016-08-31 | A kind of on-line monitoring Intelligent current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106483487A true CN106483487A (en) | 2017-03-08 |
Family
ID=58273419
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610795633.5A Pending CN106483487A (en) | 2016-08-31 | 2016-08-31 | A kind of on-line monitoring Intelligent current transformer |
| CN201710308273.6A Pending CN107229030A (en) | 2016-08-31 | 2017-05-04 | Monitor Intelligent current transformer on-line |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710308273.6A Pending CN107229030A (en) | 2016-08-31 | 2017-05-04 | Monitor Intelligent current transformer on-line |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN106483487A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108710005B (en) * | 2018-06-12 | 2020-11-03 | 广东电网有限责任公司广州供电局 | Dielectric loss partial discharge sensor structure and capacitive high-voltage electrical equipment detection mechanism |
| CN109545513B (en) * | 2018-12-27 | 2020-12-15 | 嘉兴奥恒进出口有限公司 | Pressure relief type oil leakage prevention capacitive voltage transformer device |
| CN111273137B (en) * | 2020-02-21 | 2022-08-05 | 国网河北省电力有限公司电力科学研究院 | Inverted current transformer and partial discharge detection device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201600390U (en) * | 2009-12-10 | 2010-10-06 | 南京电气（集团）有限责任公司 | Tap measuring terminal of high voltage electrical apparatus |
| CN202394690U (en) * | 2011-11-22 | 2012-08-22 | 江苏精科智能电气股份有限公司 | Vertical type oiled paper insulation current transformer |
| CN202548216U (en) * | 2012-04-20 | 2012-11-21 | 石家庄供电公司 | Device for live testing dielectric loss and capacitance of coupling capacitor |
| CN203117299U (en) * | 2013-03-07 | 2013-08-07 | 北京华电云通电力技术有限公司 | Integrative sensor for monitoring dielectric loss of power transformer bushing |
| CN203216999U (en) * | 2013-04-19 | 2013-09-25 | 保定市力兴电子设备有限公司 | Capacitive equipment dielectric loss live line measurement sampling device |
| CN203658430U (en) * | 2013-12-30 | 2014-06-18 | 国家电网公司 | Capacitive equipment insulation online monitoring and electrification test integrated sampling protection device |
| CN103954889A (en) * | 2014-04-03 | 2014-07-30 | 贵州电力试验研究院 | Capacitive type device insulation parameter electrification testing method based on pincerlike current sensors |
| CN105448509A (en) * | 2015-12-03 | 2016-03-30 | 成都格瑞思文化传播有限公司 | High-voltage current transformer |
-
2016
- 2016-08-31 CN CN201610795633.5A patent/CN106483487A/en active Pending
-
2017
- 2017-05-04 CN CN201710308273.6A patent/CN107229030A/en active Pending
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| Publication number | Publication date |
|---|---|
| CN107229030A (en) | 2017-10-03 |
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