CN107731625A - A kind of Buchholz relay - Google Patents
A kind of Buchholz relay Download PDFInfo
- Publication number
- CN107731625A CN107731625A CN201710977756.5A CN201710977756A CN107731625A CN 107731625 A CN107731625 A CN 107731625A CN 201710977756 A CN201710977756 A CN 201710977756A CN 107731625 A CN107731625 A CN 107731625A
- Authority
- CN
- China
- Prior art keywords
- relay
- hydrostatic sensor
- signal processor
- buchholz relay
- liquid level
- 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.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/26—Details
Abstract
The embodiments of the invention provide a kind of Buchholz relay, including：Relay-set, hydrostatic sensor, signal processor, wherein, it is full of insulating oil inside the relay-set；Hydrostatic sensor is arranged inside the relay-set, when the level change of insulating oil, hydrostatic sensor generation current changing signal, and current changing signal is sent to signal processor；Signal processor generates the liquid level information of insulating oil according to the current changing signal.Solving Buchholz relay operation maintenance personnel when breaking down by the embodiment of the present invention can not know that its internal fault produces the situation of gas, operation maintenance personnel is dealt with time, avoid bigger loss caused by failure.
Description
Technical field
The present invention relates to field transformer, and in particular to a kind of Buchholz relay.
Background technology
Buchholz relay is arranged in the union of transformer box cover and oil conservater, when event occurs for the inside of oil-filled transformer
During barrier, electric arc will decompose insulating materials and produce substantial amounts of gas or cause oil stream to get excited, and make relay trigger action, to connect
The logical control loop specified, and send signal in time or automatically cut off transformer.
Existing light gas protecting principle makes the concurrent pre-warning signal of analysis, this detection side for gas internal gas total amount
Method is unpredictable to the development degree of device interior failure, can only be by artificial experience when device interior failure development is very fast
Time difference is signaled to judge fault degree by light gas, accuracy, operability are poor.As can be seen here existing gas after
Electrical equipment operation maintenance personnel when breaking down can not know that its internal fault produces the situation of gas.
The content of the invention
Therefore, the technical problem to be solved in the present invention is, Buchholz relay operation maintenance personnel when breaking down can not be known
The situation that its internal fault produces gas is known, so as to provide a kind of Buchholz relay.
Therefore, the embodiments of the invention provide following technical scheme：
The embodiments of the invention provide a kind of Buchholz relay, including：Relay-set, hydrostatic sensor, signal transacting
Device, wherein, it is full of insulating oil inside the relay-set；The hydrostatic sensor is arranged inside the relay-set,
When the level change of the insulating oil, the hydrostatic sensor generates current changing signal, and by the current changing signal
It is sent to the signal processor；The liquid level that the signal processor generates the insulating oil according to the current changing signal is high
Spend information.
Preferably, the hydrostatic sensor also includes：Moving contact, static contact, annular magnet float, the moving contact with it is quiet
Contact, which corresponds, forms one group of sets of contacts, and multigroup sets of contacts is arranged inside the hydrostatic sensor, along the hydraulic pressure
Sensor inwall is arranged, and the annular magnet float is sheathed on outside the hydrostatic sensor, inside the Buchholz relay
When insulating oil liquid level changes, the annular magnet float follows the liquid level of insulating oil to float, absorption and the annular magnet
The level moving contact of float, the moving contact is turned on with the static contact of group, generate the current changing signal.
Preferably, the hydrostatic sensor also includes：Lead-out wire, the hydrostatic sensor is by the lead-out wire by described in
Current changing signal is sent to the signal processor.
Preferably, the hydrostatic sensor also includes：Resistance, the resistance are connected between hydrostatic sensor sets of contacts.
Preferably, the Buchholz relay also includes：Warning device, it is connected with the signal processor, at the signal
Reason device judges whether the liquid level information is less than a pre-set level height threshold, if the liquid level information is less than institute
Pre-set level height threshold is stated, the signal processor sends an alarm signal to the warning device, drives the alarm dress
Put and alarmed.
Preferably, the Buchholz relay also includes：Display, the display receive the signal processor transmission
Liquid level information, and according to the liquid level presentation of information the current insulating oil of Buchholz relay liquid level；The report
Alarm device generates warning message according to the alarm signal, and sends to the display, the display and show the alarm
Information.
Preferably, the side of the relay-set connects with fuel tank, for filling insulation into the relay-set
Oil；Opposite side connects with conservator, and when inside transformer, which breaks down, produces gas, gas rises from inside transformer, flows through
The Buchholz relay, decline pasta inside the relay-set.
The technical scheme of the embodiment of the present invention, has the following advantages that：
Hydrostatic sensor is located at relay-set by the embodiment of the present invention by filling full insulating oil in relay-set
Inside, when inside transformer breaks down, the generation of characteristic gas is often associated with, gas will make inside relay-set
Insulating oil liquid level changes, and hydrostatic sensor generates current changing signal according to the liquid level of insulating oil, and by the curent change
Signal is transferred to signal processor and handled, and signal processor is generated inside relay-set absolutely according to the current changing signal
The elevation information of edge fluid position.Staff can be thus allowed to learn feelings caused by Buchholz relay internal fault gas in real time
Condition, decision data is provided for operation maintenance personnel, avoid failure from deteriorating and bring massive losses to whole power network.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structure chart of Buchholz relay of the embodiment of the present invention；
Fig. 2 is the structure chart of the hydrostatic sensor of Buchholz relay of the embodiment of the present invention；
Fig. 3 is the structure chart in the gas loop of Buchholz relay of the embodiment of the present invention.
Embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing, it is clear that described implementation
Example is part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, can be with
It is the connection of two element internals, can is wireless connection or wired connection.For one of ordinary skill in the art
For, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
As long as in addition, technical characteristic involved in invention described below different embodiments non-structure each other
It is be combined with each other into conflict can.
The embodiment of the present invention provides a kind of Buchholz relay, and Fig. 1 is the flow chart of Buchholz relay of the embodiment of the present invention, such as
Shown in Fig. 1, the Buchholz relay includes：Relay-set 20, hydrostatic sensor 21, signal processor 30.
During Buchholz relay normal work, the inside of relay-set 20 is full of insulating oil.
Hydrostatic sensor 21 is arranged inside relay-set 20, when inside transformer breaks down, is often associated with spy
Levy the generation of gas, gas produce after from during inside transformer rises to top conservator, flowing through Buchholz relay can lead
The liquid level of relay-set built-in electrical insulation oil is caused to change, when the level change of insulating oil, hydrostatic sensor 21 generates electricity
Variable signal is flowed, and current changing signal is sent to signal processor 30.
Signal processor 30 generates the liquid level information of insulating oil according to current changing signal.Due in hydrostatic sensor
21 each height and position corresponds to corresponding current value, so signal processor can obtain absolutely according to the current changing signal
The specific liquid level of edge oil, so as to so that operation maintenance personnel learns the liquid level of insulating oil in real time, so as to according to fault progression
Situation make corresponding measure.
By said process, hydrostatic sensor is converted into current changing signal according to the change of insulating oil liquid level, then will
The current changing signal is sent to signal processor, and the signal processor can learn insulating oil according to the current changing signal
Liquid level, operation maintenance personnel can learn situation caused by Buchholz relay internal fault in real time, and operation maintenance personnel is according to specific landearth-circumstance
Condition can make the loss that corresponding decision-making avoids failure from continuing whole power network caused by deteriorating.
Buchholz relay also includes grave gas loop, and grave gas loop is prior art, occurs inside Buchholz relay
During catastrophe failure, then a large amount of gases are produced rapidly, relay-set internal pressure is instantaneously uprushed, and produces very big oil stream, so as to
Interior panelling movement is promoted, connects grave gas loop.Grave gas action either can all bring larger to equipment or power network
Influence.
Fig. 2 is the structure chart of the hydrostatic sensor of Buchholz relay of the embodiment of the present invention, as shown in Fig. 2 specifically, hydraulic pressure
Sensor 21 includes：Moving contact 24, static contact 23, annular magnet float 22, moving contact 24 are corresponded with static contact 23 and formed
One group of sets of contacts, multigroup sets of contacts are arranged at the inside of hydrostatic sensor 21, are arranged along the inwall of hydrostatic sensor 21, annular magnetic
Iron float 22 is sheathed on the outside of hydrostatic sensor 21.
When the built-in electrical insulation fluid position of Buchholz relay 20 changes, annular magnet float 22 follows the liquid level of insulating oil
Float, absorption and the level moving contact 24 of annular magnet float 22, moving contact 24 is generated with being turned on the static contact 23 of group
Current changing signal.
Fig. 3 is the structure chart in the gas loop of Buchholz relay of the embodiment of the present invention, as shown in Figure 3, it is preferable that hydraulic pressure passes
Sensor 21 also includes：Current changing signal is sent to signal processor by lead-out wire 25, hydrostatic sensor 21 by lead-out wire 25
30。
Grave gas protection wiring is connected with grave gas loop, belongs to prior art, is to prevent from occurring inside Buchholz relay
During compared with major break down, connecting grave gas loop causes to cause serious influence to equipment even power network.
Preferably, hydrostatic sensor 21 also includes：Resistance 26, the resistance are connected between the sets of contacts of hydrostatic sensor 21,
Different current values is exported when isolating for sets of contacts, and contacting different sets of contacts.
Preferably, Buchholz relay also includes：Warning device 31, it is connected with signal processor 30, signal processor 30 is sentenced
Break off whether edge oil level elevation information is less than a pre-set level height threshold, if insulating oil liquid level information is less than default
Liquid level threshold value, signal processor 30 send an alarm signal to the warning device 31, drive the warning device 31 to be reported
It is alert.So as to warning staff, staff is prompted to make respective handling.
Preferably, Buchholz relay also includes：Display 32, the liquid level that the reception signal processor 30 of display 32 transmits are high
Information is spent, and according to the liquid level of the current insulating oil of the liquid level presentation of information Buchholz relay；Warning device 31 is according to report
Alert signal generation warning message, and send to display 32, display 32 and show the warning message.
Preferably, the side of relay-set can connect with fuel tank, and the fuel tank is used to fill into the relay-set
Insulating oil；Opposite side connects with conservator, and when inside transformer, which breaks down, produces gas, gas rises from inside transformer,
Buchholz relay is flowed through, declines pasta inside relay-set.
By said process, solve when device interior failure development is very fast, light watt can only be passed through by artificial experience
This signals the time difference to judge fault degree, improves accuracy and operability, while work as fault progression to a certain extent
When, alarmed.Operation maintenance personnel is set to produce gas according to the liquid level of Buchholz relay built-in electrical insulation oil so as to judge to be out of order
Concrete condition, operation maintenance personnel is handled as the case may be, avoid failure continue to deteriorate caused by even more serious damage
Lose.
Obviously, above-described embodiment is only intended to clearly illustrate example, and is not the restriction to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or
Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or
Among changing still in the protection domain of the invention.
Claims (7)
- A kind of 1. Buchholz relay, it is characterised in that including：Relay-set, hydrostatic sensor, signal processor, wherein,Insulating oil is full of inside the relay-set；The hydrostatic sensor is arranged inside the relay-set, when the level change of the insulating oil, the hydraulic pressure Sensor generates current changing signal, and the current changing signal is sent into the signal processor；The signal processor generates the liquid level information of the insulating oil according to the current changing signal.
- 2. Buchholz relay according to claim 1, it is characterised in that the hydrostatic sensor also includes：It is moving contact, quiet Contact, annular magnet float, the moving contact corresponds with static contact forms one group of sets of contacts, and multigroup sets of contacts is set Inside the hydrostatic sensor, arranged along the hydrostatic sensor inwall, the annular magnet float is sheathed on the hydraulic pressure Sensor external,When the Buchholz relay built-in electrical insulation fluid position changes, the annular magnet float follows the liquid level of insulating oil Float, absorption and the level moving contact of annular magnet float, the moving contact is turned on with the static contact of group, generate The current changing signal.
- 3. Buchholz relay according to claim 2, it is characterised in that the hydrostatic sensor also includes：Lead-out wire, institute State hydrostatic sensor and the current changing signal is sent to by the signal processor by the lead-out wire.
- 4. Buchholz relay according to claim 2, it is characterised in that the hydrostatic sensor also includes：Resistance, it is described Resistance is connected between hydrostatic sensor sets of contacts.
- 5. Buchholz relay according to claim 1, it is characterised in that the Buchholz relay also includes：Warning device, It is connected with the signal processor, whether the signal processor judges the liquid level information higher than pre-set level height Threshold value, if the liquid level information is less than the pre-set level height threshold, the signal processor fills to the alarm Put and send an alarm signal, drive the warning device to be alarmed.
- 6. Buchholz relay according to claim 5, it is characterised in that the Buchholz relay also includes：Display, institute State the liquid level information that display receives the signal processor transmission, and according to the liquid level presentation of information watt The liquid level of the current insulating oil of this relay；The warning device generates warning message according to the alarm signal, and sends to the display, the display and show Show the warning message.
- 7. Buchholz relay according to claim 1, it is characterised in that the side of the relay-set and fuel tank phase Connect, for filling insulating oil into the relay-set；Opposite side connects with conservator, when inside transformer breaks down generation During gas, gas rises from inside transformer, flows through the Buchholz relay, declines pasta inside the relay-set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710977756.5A CN107731625A (en) | 2017-10-17 | 2017-10-17 | A kind of Buchholz relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710977756.5A CN107731625A (en) | 2017-10-17 | 2017-10-17 | A kind of Buchholz relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107731625A true CN107731625A (en) | 2018-02-23 |
Family
ID=61211977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710977756.5A Pending CN107731625A (en) | 2017-10-17 | 2017-10-17 | A kind of Buchholz relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107731625A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111477497A (en) * | 2020-03-18 | 2020-07-31 | 山东电力设备有限公司 | Intelligent double-floating-ball gas relay and monitoring system |
| CN111863522A (en) * | 2020-07-01 | 2020-10-30 | 国网天津市电力公司电力科学研究院 | Electronic gas relay |
| CN112630637A (en) * | 2020-11-20 | 2021-04-09 | 国网山东省电力公司青岛供电公司 | Online checking system and method for gas relay of power transformer |
| CN113257612A (en) * | 2021-05-25 | 2021-08-13 | 国网河北省电力有限公司检修分公司 | Gas relay |
| CN113280884A (en) * | 2020-02-20 | 2021-08-20 | 阳江核电有限公司 | Gas quantity monitoring system, method and storage medium for gas relay of oil-immersed transformer |
| CN114001795A (en) * | 2021-11-01 | 2022-02-01 | 国网北京市电力公司 | Liquid level monitoring method and device, computer readable medium and processor |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113280884A (en) * | 2020-02-20 | 2021-08-20 | 阳江核电有限公司 | Gas quantity monitoring system, method and storage medium for gas relay of oil-immersed transformer |
| CN111477497A (en) * | 2020-03-18 | 2020-07-31 | 山东电力设备有限公司 | Intelligent double-floating-ball gas relay and monitoring system |
| CN111863522A (en) * | 2020-07-01 | 2020-10-30 | 国网天津市电力公司电力科学研究院 | Electronic gas relay |
| CN112630637A (en) * | 2020-11-20 | 2021-04-09 | 国网山东省电力公司青岛供电公司 | Online checking system and method for gas relay of power transformer |
| CN112630637B (en) * | 2020-11-20 | 2023-05-30 | 国网山东省电力公司青岛供电公司 | Online checking system and method for gas relay of power transformer |
| CN113257612A (en) * | 2021-05-25 | 2021-08-13 | 国网河北省电力有限公司检修分公司 | Gas relay |
| CN114001795A (en) * | 2021-11-01 | 2022-02-01 | 国网北京市电力公司 | Liquid level monitoring method and device, computer readable medium and processor |
| CN114001795B (en) * | 2021-11-01 | 2023-11-03 | 国网北京市电力公司 | Liquid level monitoring method, liquid level monitoring device, computer readable medium and processor |
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Application publication date: 20180223 |