CN107966653A - A kind of Buchholz relay monitoring device - Google Patents
A kind of Buchholz relay monitoring device Download PDFInfo
- Publication number
- CN107966653A CN107966653A CN201710967244.0A CN201710967244A CN107966653A CN 107966653 A CN107966653 A CN 107966653A CN 201710967244 A CN201710967244 A CN 201710967244A CN 107966653 A CN107966653 A CN 107966653A
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- buchholz relay
- signal processor
- relay
- monitoring device
- buchholz
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3277—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches
- G01R31/3278—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches of relays, solenoids or reed switches
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- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
An embodiment of the present invention provides a kind of Buchholz relay monitoring device, including：Buchholz relay device, signal processor, the first capacity relay and the second capacity relay, wherein, by setting two capacity relays respectively on the first predeterminated position and the second predeterminated position, when insulating oil liquid level drops to the two predeterminated positions, two capacitors respectively can signal processor send signal, synchronous signal processor records the time at this time respectively, according to the vertical drop of two predeterminated positions and two time differences, you can draw the gas production rate of Buchholz relay device.The internal fault development degree for solving the problems, such as to judge transformer by the gas production rate of light gas when Buchholz relay is worked normally in the prior art by the embodiment of the present invention, is safeguarded easy to staff.
Description
Technical field
The present invention relates to Buchholz relay field, and in particular to a kind of Buchholz relay monitoring device.
Background technology
Buchholz relay is installed in the union of transformer box cover and oil conservater, when event occurs for the inside of oil-immersed transformer
During barrier, electric arc will decompose insulating materials and produce substantial amounts of gas or cause oil stream to get excited, and act the contact of relay, with
The control loop specified is connected, and sends signal in time or cuts off transformer automatically.
At present, Buchholz relay protection has light two kinds of situations of gas and grave gas.When pasta reduces a graduation mark, light watt
This conducting of getting an electric shock, light gas send alarm signal.When light gas sends alarm signal, gas production rate can not obtain in light gas
Knowing, staff usually requires to judge power transformer interior fault development degree by gas gas production rate in light gas, so that
Maintenance decision is made, and light gas does not possess this function still at present, therefore existing light gas operating mode is unfavorable for staff
Operation and maintenance.So it cannot judge to become by the gas production rate of light gas when Buchholz relay is worked normally in the prior art
The problem of internal fault development degree of depressor.
The content of the invention
Therefore, the technical problem to be solved in the present invention is to overcome, in the prior art cannot be in the normal work of Buchholz relay
The problem of internal fault development degree of transformer is judged when making by the gas production rate of light gas, thus provide a kind of gas after
Electric appliance checking device.
For this reason, an embodiment of the present invention provides following technical solution：
An embodiment of the present invention provides a kind of Buchholz relay monitoring device, including：Buchholz relay device, signal processing
Device, the first capacity relay and the second capacity relay, wherein, the inside of Buchholz relay device is full of insulating oil；Described
One capacity relay is arranged on the first predeterminated position of the inside of the Buchholz relay monitoring device；Second capacity relay
The second predeterminated position arranged on the inside of the Buchholz relay monitoring device；When the Buchholz relay device inside it is exhausted
When edge fluid position drops to first predeterminated position, first capacity relay sends the first electricity to the signal processor
Hold variable signal, the first time of the signal processor record at this time；When the insulation of the inside of the Buchholz relay device
When fluid position drops to second predeterminated position, second capacity relay sends the second capacitance to the signal processor
Variable signal, the second time of the signal processor record at this time；The signal processor according to first predeterminated position,
Second predeterminated position, first time and the second time calculate the gas production rate of the Buchholz relay device.
Preferably, the signal processor calculates the term speed V according to the following formula：V=H/ (T2-T1), wherein,
H is the vertical drop of first predeterminated position and second predeterminated position；T2 is second time；T1 is described the
One time.
Preferably, the Buchholz relay monitoring device further includes：Warning device, the signal processor judge the production
Whether gas velocity rate is more than predetermined threshold value, and when the gas production rate is more than the predetermined threshold value, the signal processor is to described
Warning device sends an alarm signal, drives the warning device to alarm.
Preferably, the Buchholz relay monitoring device further includes：Display, the display by the gas production rate into
Row display.
Preferably, the Buchholz relay monitoring device is additionally provided with communication interface, for the signal processor to be calculated
The gas production rate be transferred to the terminal of a peripheral hardware.
Technical solution of the embodiment of the present invention, has the following advantages that：
The embodiment of the present invention by setting two capacity relays respectively on the first predeterminated position and the second predeterminated position,
When insulating oil liquid level drops to the two predeterminated positions, two capacitors respectively can signal processor send signal, believe at the same time
Number processor records the time at this time respectively, according to the vertical drop of two predeterminated positions and two time differences, you can
Go out the gas production rate of Buchholz relay device, staff is learnt the aerogenesis speed inside Buchholz relay device in real time
Rate, rapid according to the aerogenesis judge Buchholz relay internal fault development degree, so that maintenance decision is made, beneficial to work people
Member is safeguarded.
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 solution of the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in describing below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
Put, other attached drawings can also be obtained according to these attached drawings.
Fig. 1 is the structure diagram of Buchholz relay monitoring device of the embodiment of the present invention；
Fig. 2 is the top view of the Buchholz relay device cross section of Buchholz relay monitoring device of the embodiment of the present invention；
Fig. 3 is that the capacity relay of Buchholz relay monitoring device of the embodiment of the present invention and Buchholz relay device are formed
Equivalent capacity structure chart；
Fig. 4 is another structure diagram of Buchholz relay monitoring device of the embodiment of the present invention.
Embodiment
Technical scheme is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's all other embodiments obtained without making creative work, belong to the scope of protection of the invention.
In the description of the present invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Easy to describe the present invention and simplify description, rather than instruction or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" the 3rd " is only used for description purpose, and it is not intended that instruction or hint relative importance.
As long as in addition, technical characteristic involved in invention described below different embodiments non-structure each other
It can be combined with each other into conflict.
The embodiment of the present invention provides a kind of Buchholz relay monitoring device, and Fig. 1 supervises for Buchholz relay of the embodiment of the present invention
The structure diagram of device is surveyed, as shown in Figure 1, the Buchholz relay monitoring device includes：Buchholz relay device 10, signal processing
Device 20, the first capacity relay 30 and the second capacity relay 40.
Wherein, the inside of Buchholz relay monitoring device is full of insulating oil；First capacity relay 30 be arranged on gas after
The first predeterminated position A inside electrical installation 10, the second capacity relay 40 are arranged on second inside Buchholz relay device 10
Predeterminated position B.
In a preferred embodiment, the first above-mentioned predeterminated position is the position of 10 inner tip of Buchholz relay, so that
Detected by the first capacity relay 30 when inside breaks down and produces gas, start 10 built-in electrical insulation oil of Buchholz relay
The first capacitance change signal declined；Second predeterminated position is when the inside of Buchholz relay 10 is full of insulating oil in liquid level
Between position, so as to drop to the second predeterminated position when 10 built-in electrical insulation oil of Buchholz relay by the detection of the second capacity relay 40
When, send the second capacitance change signal to signal processor 20.
Fig. 2 is the top view of the Buchholz relay device cross section of Buchholz relay monitoring device of the embodiment of the present invention, such as
Shown in Fig. 2, capacity relay 30 and capacity relay 40 are arranged on the outside of the glass monitoring window 80 of Buchholz relay device side,
The interior metal chip of capacity relay 30 and capacity relay 40 and the metal shell of Buchholz relay device 10 pass through glass
Be equivalent to two pole plates of capacitance, the air or insulating oil inside Buchholz relay device 10 as capacitor dielectric, by
The shell of Buchholz relay device 10 can be equivalent to default four capacitances C1, C2, C3, the C4 of parallel connection, as shown in Figure 3.Air
Between dielectric constant is about 1, and the dielectric constant of insulating oil is 2.2 to 2.4, therefore as insulating oil liquid level changes, equivalent electric
Hold interior insulation medium also to change, when insulation oil level drops to the position of capacity relay 30, capacity relay 40
When, the capacitance of output also changes therewith, produces corresponding capacitance change signal.Therefore by monitoring the change of capacitance
Buchholz relay device inside liquid level information can be learnt in real time.
When insulating oil liquid level inside Buchholz relay device drops to the first predeterminated position A, positioned at the first default position
The first capacity relay 30 for putting A monitors that capacitance changes, and the first capacitance change signal is sent to signal processor 20,
The first time T1 of signal processor record at this time.
It is default positioned at second when the insulating oil liquid level of the inside of Buchholz relay device drops to the second predeterminated position B
The second capacity relay 40 of position B monitors that capacitance changes, and the second capacitance variations letter is sent to signal processor 20
Number, the second time T2 of signal processor record at this time.
Signal processor 20 is counted according to the first predeterminated position A, the second predeterminated position B, first time T1 and the second time T2
Calculate the gas production rate inside Buchholz relay device 10.
Pass through the Buchholz relay monitoring device of the embodiment of the present invention, you can obtain inside Buchholz relay device rapidly
The speed of aerogenesis, so that staff judges rapidly according to gas production rate, when gas production rate is excessive, then shows gas relay
Device device, it is necessary to take corresponding measure immediately, if gas production rate is higher, can be taken there may be catastrophe failure and shorten the cycle
The mode of trace analysis continues to pay close attention to.Can thus staff be set preferably to be safeguarded.
In one embodiment, signal processor 20 can calculate Buchholz relay device 10 by formula V=H/ (T2-T1)
Gas production rate V, wherein, H be the first predeterminated position A and the second predeterminated position B vertical drop, T1 at the first time, T2
For the second time.
Preferably, Fig. 4 is another structure diagram of Buchholz relay monitoring device of the embodiment of the present invention, as shown in figure 4, this
The Buchholz relay monitoring device of inventive embodiments further includes：Whether warning device 50, signal processor 20 judge gas production rate V
More than predetermined threshold value V1, when gas production rate V is more than predetermined threshold value V1, signal processor 20 sends an alarm to warning device 50
Signal, driving warning device 50 carry out sound-light alarm.If gas production rate V higher, less than predetermined threshold value V1, more than another default threshold
Value V2, then can take the mode for shortening period tracking analysis to continue to pay close attention to, prompt staff to pay attention to.Current Buchholz relay dress
When the gas production rate put is excessive, staff takes emergent management measure according to actual conditions.
Preferably, as shown in figure 4, Buchholz relay monitoring device further includes：Display 60, display 60 is to aobvious in real time
Show the information of gas production rate V, allow staff to read corresponding speed in time to make corresponding judgement to facilitate.
Preferably, as shown in figure 4, Buchholz relay monitoring device is additionally provided with communication interface 70, for by signal processor
20 gas production rates calculated are transferred to the terminal of a peripheral hardware.In an alternative embodiment, which can be 485 communications
Interface, can be achieved at the same time the rate information being uploaded to backstage, realize that current information is shared with backstage.
By the above process, solve when breaking down in the prior art inside Buchholz relay, it is impossible in learning in time
The problem of gas production rate in portion, so that the fault progression degree inside Buchholz relay be can interpolate that out according to gas production rate, profit
Safeguarded in staff.
Obviously, the above embodiments are merely examples for clarifying the description, and the restriction not 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 (5)
- A kind of 1. Buchholz relay monitoring device, it is characterised in that including：Buchholz relay device, signal processor, the first electricity Hold relay and the second capacity relay, wherein,The inside of Buchholz relay device is full of insulating oil；First capacity relay is arranged on Buchholz relay monitoring dress First predeterminated position of the inside put；Second capacity relay is arranged on the of the inside of the Buchholz relay monitoring device Two predeterminated positions；When the insulating oil liquid level of the inside of the Buchholz relay device drops to first predeterminated position, first electricity Hold relay and send the first capacitance change signal to the signal processor, when the signal processor records first at this time Between；When the insulating oil liquid level of the inside of the Buchholz relay device drops to second predeterminated position, second electricity Hold relay and send the second capacitance change signal to the signal processor, when the signal processor records second at this time Between；The signal processor calculates institute according to first predeterminated position, the second predeterminated position, first time and the second time State the gas production rate of Buchholz relay device.
- 2. Buchholz relay monitoring device according to claim 1, it is characterised in that the signal processor is according to following Formula calculates the term speed V：V=H/ (T2-T1),Wherein, H is the vertical drop of first predeterminated position and second predeterminated position；T2 is second time； T1 is the first time.
- 3. Buchholz relay monitoring device according to claim 1, it is characterised in that the Buchholz relay monitoring device Further include：Warning device, the signal processor judge whether the gas production rate is more than predetermined threshold value, when the gas production rate During more than the predetermined threshold value, the signal processor sends an alarm signal to the warning device, drives the alarm dress Put and alarm.
- 4. Buchholz relay monitoring device according to claim 1, it is characterised in that the Buchholz relay monitoring device Further include：Display, the display are shown the gas production rate.
- 5. Buchholz relay monitoring device according to claim 1, it is characterised in that the Buchholz relay monitoring device Communication interface is additionally provided with, the gas production rate for the signal processor to be calculated is transferred to the terminal of a peripheral hardware.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710967244.0A CN107966653B (en) | 2017-10-17 | 2017-10-17 | Gas relay monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710967244.0A CN107966653B (en) | 2017-10-17 | 2017-10-17 | Gas relay monitoring device |
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| Publication Number | Publication Date |
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| CN107966653A true CN107966653A (en) | 2018-04-27 |
| CN107966653B CN107966653B (en) | 2020-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710967244.0A Active CN107966653B (en) | 2017-10-17 | 2017-10-17 | Gas relay monitoring device |
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| CN (1) | CN107966653B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110514948A (en) * | 2019-08-02 | 2019-11-29 | 山东电力设备有限公司 | A kind of load switch of transformer on-Line Monitor Device |
| CN111446069A (en) * | 2020-03-24 | 2020-07-24 | 广东电网有限责任公司电力科学研究院 | Protection method, system, device and equipment for oil-immersed transformer |
| CN111664919A (en) * | 2020-07-03 | 2020-09-15 | 国网四川省电力公司绵阳供电公司 | Light-sensitive light 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 |
| 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 |
| CN114047266A (en) * | 2021-11-10 | 2022-02-15 | 中国南方电网有限责任公司超高压输电公司大理局 | Method, device and system for testing gas relay light gas monitoring device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110514948A (en) * | 2019-08-02 | 2019-11-29 | 山东电力设备有限公司 | A kind of load switch of transformer on-Line Monitor Device |
| 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 |
| CN111446069A (en) * | 2020-03-24 | 2020-07-24 | 广东电网有限责任公司电力科学研究院 | Protection method, system, device and equipment for oil-immersed transformer |
| CN111446069B (en) * | 2020-03-24 | 2021-03-12 | 广东电网有限责任公司电力科学研究院 | Protection method, system, device and equipment for oil-immersed transformer |
| CN111664919A (en) * | 2020-07-03 | 2020-09-15 | 国网四川省电力公司绵阳供电公司 | Light-sensitive light 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 |
| CN114047266A (en) * | 2021-11-10 | 2022-02-15 | 中国南方电网有限责任公司超高压输电公司大理局 | Method, device and system for testing gas relay light gas monitoring device |
| CN114047266B (en) * | 2021-11-10 | 2024-01-16 | 中国南方电网有限责任公司超高压输电公司大理局 | Inspection method, device and system for gas relay light gas monitoring device |
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| CN107966653B (en) | 2020-09-04 |
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Address after: Shinan District 266003 Shandong city of Qingdao province Liujiaxia Road No. 17 in Qingdao power supply company Applicant after: Qingdao Power Supply Company, State Grid Shandong Electric Power Company Applicant after: State Grid Co., Ltd. Address before: Shinan District 266003 Shandong city of Qingdao province Liujiaxia Road No. 17 in Qingdao power supply company Applicant before: Qingdao Power Supply Company, State Grid Shandong Electric Power Company Applicant before: State Grid Corporation |
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