CN106404191A - Multipath temperature detection protection method for oil-immersed transformer - Google Patents
Multipath temperature detection protection method for oil-immersed transformer Download PDFInfo
- Publication number
- CN106404191A CN106404191A CN201610745434.3A CN201610745434A CN106404191A CN 106404191 A CN106404191 A CN 106404191A CN 201610745434 A CN201610745434 A CN 201610745434A CN 106404191 A CN106404191 A CN 106404191A
- Authority
- CN
- China
- Prior art keywords
- temperature
- oil
- transformer
- protection
- probe
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K2219/00—Thermometers with dedicated analog to digital converters
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Protection Of Transformers (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention relates to a multipath temperature detection protection method for an oil-immersed transformer. According to the method, a transformer transformer oil tank is provided with temperature probes in different quantities, the temperature probes are used for acquiring temperature signals of different positions, simulation signals are converted through a transmitter into digital signals which are sent to a protection controller, the protection controller is not only provided with overtemperature protection logics but also supports temperature difference protection and temperature rising protection, the temperature difference is difference of temperatures acquired by the temperature probes at different positions of the transformer, and temperature rising refers to a rising speed of the temperature acquired by a certain temperature probe. When the transformer internally generates an outgoing wire fault point, and a fault is in a transformer differential protection fixed value scope, temperature rising occurs at a certain point to cause internal outgoing wire temperature difference, or the temperature rising speed reaches a set value, or temperature difference of two points reaches the set value, alarm or tripping operation can be realized for transformer protection, important reference is provided for fault elimination through advanced problem discovery, and the valuable time is saved.
Description
Technical field
The present invention relates to technical field of electric system protection, more particularly, to a kind of multi way temperature for oil-filled transformer
Detect guard method.
Background technology
Oil-filled transformer protection is very perfect in GPF (General Protection False function such as electric quantity protective, differential protection etc., but
In prior art, temperature protection often only has a road, and transformer oil relatively is less with oil mass, and single probe can meet use requirement,
But for Large Copacity oil-filled transformer, often using several tons of heavy transformer oil, apart from temperature probe farther out
During the internal outlet fault in position and be not up to electric quantity protective and differential protection definite value and timely protect it is impossible to provide, such therefore
Barrier can progressively be evolved into compared with major break down.If after analyzing the temperature acquisition of diverse location, coordinate main transformer protection device, can be more
Efficiently find trouble point, more quick disengagement failure power supply or alerted, to avoid bigger loss, then design a kind of
Multi way temperature for oil-filled transformer detects the especially aobvious necessity of guard method.
Content of the invention
For the deficiencies in the prior art, this invention provides a kind of multi way temperature for oil-filled transformer to detect protection side
Method, for the oil-filled transformer of various electric pressures.Oil-filled transformer arranges the temperature probe of varying number, in order to gather
The temperature signal of diverse location, protection controller is not only provided with overtemperature prote logic, also supports temperature difference protection and temperature rise protection, its
The middle temperature difference is the difference of transformator diverse location temperature probe collecting temperature, and temperature rise is the upper of transformator temperature probe collecting temperature
Lifting speed.The internal outlet trouble point of oil-filled transformer, and fault is in transformer differential protection limits, and internal
Certain point causes temperature to rise, and causes the internal outlet temperature difference, or rate of rise in temperature is to temperature between setting value or 2 points
Difference arrives setting value, and tranformer protection all can achieve alarm or trips.
To achieve these goals, this invention provides a kind of multi way temperature for oil-filled transformer to detect protection side
Method, arrange multiple temperature probes in the top of oil tank for oil immersion type transformer and bottom, and temperature probe passes through transmitter and will record
Temperature analog signal is converted to digital signal and is sent to protection controller, then is uploaded to background server through protection controller,
To realize the real-time detection of oil temperature at temperature probe, background server is right by carrying out to the real-time oil temperature receiving and setting value
Than, to carrying out across comparison between real-time oil temperature and certain probe in different periods, recorded by temperature information and carry out longitudinal contrast
Afterwards, corresponding protective measure is made according to the output control protection device of contrast, described protective measure is as follows：
A, overtemperature alarm or tripping operation
If inside transformer breaks down, certain near transformer temperature probe or many places oil temperature reach setting value, protect
Shield controller is alerted or is tripped, simultaneously on send warning signal to arrive background server, control live electric bell electric whistle to send alarm；
B, the temperature difference are reported to the police or are tripped
If breaking down in certain position of inside transformer, the temperature probe near fault can detect this temperature probe oil temperature nearby
Rise, but not yet reach overtemperature setting value, and the oil temperature at other temperature probe is normal, and the oil temperature at this temperature probe
Poor with the oil temperature at other temperature probes reach setting value, protection controller is alerted or is tripped, simultaneously on send warning signal
To background server, inform that the oil temperature at this temperature probe reaches setting value with the oil temperature difference at other temperature probes, and by
Background server controls live electric bell electric whistle to send alarm；
C, temperature rise alarm or tripping operation
If breaking down in certain position of inside transformer, the temperature probe near fault can detect this temperature probe oil temperature nearby
Rise, but not yet reach overtemperature setting value or temperature difference setting value, and the oil temperature rate of climb at this temperature probe reaches and sets
Definite value, protection controller alerted or tripped, simultaneously on send warning signal to arrive background server, inform at this temperature probe
The oil temperature rate of climb reaches setting value, and controls live electric bell electric whistle to send alarm by background server.
Detect the improvement further of guard method as a kind of multi way temperature for oil-filled transformer of the present invention, in oil
Immersion oil tank of transformer is internally provided with three temperature probes, and the top of oil tank for oil immersion type transformer is provided with a temperature and visits
Head, two other temperature probe is arranged on the bottom of oil tank for oil immersion type transformer.
Beneficial effect
A kind of multi way temperature for oil-filled transformer of the present invention detects guard method, for the oil immersed type of various electric pressures
Transformator；By arranging the temperature probe of varying number, in order to gather the temperature signal of fuel tank diverse location and to be sent to guarantor
Shield controller, can effectively prevent in outlet fault internal apart from temperature probe remote position and be not up to electric quantity protective
With differential protection definite value it is impossible to provide timely protection problem；Protection controller is not only designed with overtemperature prote logic, Er Qiezhi
Hold temperature difference protection and temperature rise protection, can pinpoint the problems before overheat protection function action premise, so that manual intervention transformator
Run, such as off-load, tripping operation etc., more accurately judge fault and solve fault, the exclusion for fault provides important references, saves
Quality time.
Brief description
Fig. 1 is the logic diagram of the present invention；
Fig. 2 is the flow chart of guard method of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings further detailed description is carried out to the present invention.
A kind of multi way temperature for oil-filled transformer detects guard method, and oil tank for oil immersion type transformer is provided with three
Temperature probe A, B, C, one is arranged on top of oil-tank, and two other is arranged on tank bottoms, and temperature probe will by transmitter
The temperature analog signal recording is converted to digital signal and is sent to protection controller, then is uploaded to backstage clothes through protection controller
Business device, to realize the real-time detection of oil temperature at temperature probe, background server passes through to the real-time oil temperature receiving and setting value
Carry out contrasting, to carrying out across comparison between real-time oil temperature and in different periods, temperature information is recorded to certain probe indulge
To after contrast, corresponding protective measure is made according to the output control protection device of contrast, described protective measure is as follows：
A, overtemperature alarm or tripping operation
If inside transformer breaks down it is assumed that certain near transformer temperature probe A, B, C or many places oil temperature reach
Setting value, protection controller is alerted or is tripped, simultaneously on send warning signal to arrive background server, control live electric bell electric whistle
Send alarm；
B, the temperature difference are reported to the police or are tripped
If break down in certain position of inside transformer it is assumed that the temperature probe B near fault detects oil temperature rising nearby, but
It is not yet to reach overtemperature setting value, and the oil temperature at temperature probe A, C is normal, and the oil temperature at temperature probe A is visited with temperature
The oil temperature difference at head A, C place reaches setting value, protects controller to be alerted or trip, simultaneously on send warning signal to arrive background service
Device, informs that the oil temperature at temperature probe A reaches setting value with the oil temperature difference at temperature probe B, C, and by background server control
The live electric bell electric whistle of system sends alarm；
C, temperature rise alarm or tripping operation
If break down in certain position of inside transformer it is assumed that the temperature probe B near fault detects oil temperature rising nearby, but
It is not yet to reach overtemperature setting value or temperature difference setting value, and the oil temperature rate of climb at temperature probe B reaches setting value, protection
Controller is alerted or is tripped, simultaneously on send warning signal to arrive background server, inform raising speed in the oil temperature at temperature probe B
Degree reaches setting value, and controls live electric bell electric whistle to send alarm by background server；
To be not limited to three can be multiple to the temperature probe of wherein oil tank for oil immersion type transformer setting, the position of installation also not office
Limit can be side wall or inside with the top of fuel tank and bottom.The described temperature difference is transformator diverse location temperature probe collection temperature
The difference of degree, temperature rise is the rate of climb of transformator temperature probe collecting temperature.
Temperature difference protection and the extension that temperature rise protection is ordinary temperature defencive function, can be in overheat protection function action premise
Before pinpoint the problems so that manual intervention transformer station high-voltage side bus, such as off-load, tripping operation etc., more accurately judge fault and solve fault,
Exclusion for fault provides important references, and has saved the quality time；Oil-filled transformer is protected in GPF (General Protection False function such as
Electric quantity protective, differential protection etc. are very perfect, but when apart from the internal outlet fault in temperature probe remote position and
Not yet reach electric quantity protective and differential protection definite value and timely protect it is impossible to provide, such fault can progressively be evolved into compared with die
Barrier, by the temperature difference protection and temperature rise protection, can advance notice attendant trouble point and temperature value so that manual intervention, carry
Hidden danger is eliminated in front power-off, reduces power off time.
The above, be only presently preferred embodiments of the present invention, not the present invention is made with any pro forma restriction, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any is familiar with this professional technology people
Member, in the range of without departing from technical solution of the present invention, when the technology contents of available the disclosure above make a little change or modification
For the Equivalent embodiments of equivalent variations, as long as being without departing from technical solution of the present invention content, according to the technical spirit pair of the present invention
Any simple modification, equivalent variations and modification that above example is made, all still fall within the range of technical solution of the present invention.
Claims (2)
1. a kind of multi way temperature for oil-filled transformer detect guard method it is characterised in that：In oil-filled transformer oil
The top of case and bottom arrange multiple temperature probes, and the temperature analog signal recording is converted to number by transmitter by temperature probe
Word signal is simultaneously sent to protection controller, then is uploaded to background server through protection controller, to realize oil temperature at temperature probe
Real-time detection, background server pass through the real-time oil temperature receiving and setting value are carried out contrasting, enter between real-time oil temperature
Row across comparison and certain probe is recorded after temperature information carries out longitudinally contrasting in different periods, according to the result control of contrast
Protection device processed makes corresponding protective measure, and described protective measure is as follows：
A, overtemperature alarm or tripping operation
If inside transformer breaks down, certain near transformer temperature probe or many places oil temperature reach setting value, protect
Shield controller is alerted or is tripped, simultaneously on send warning signal to arrive background server, control live electric bell electric whistle to send alarm；
B, the temperature difference are reported to the police or are tripped
If breaking down in certain position of inside transformer, the temperature probe near fault can detect this temperature probe oil temperature nearby
Rise, but not yet reach overtemperature setting value, and the oil temperature at other temperature probe is normal, and the oil temperature at this temperature probe
Poor with the oil temperature at other temperature probes reach setting value, protection controller is alerted or is tripped, simultaneously on send warning signal
To background server, inform that the oil temperature at this temperature probe reaches setting value with the oil temperature difference at other temperature probes, and by
Background server controls live electric bell electric whistle to send alarm；
C, temperature rise alarm or tripping operation
If breaking down in certain position of inside transformer, the temperature probe near fault can detect this temperature probe oil temperature nearby
Rise, but not yet reach overtemperature setting value or temperature difference setting value, and the oil temperature rate of climb at this temperature probe reaches and sets
Definite value, protection controller alerted or tripped, simultaneously on send warning signal to arrive background server, inform at this temperature probe
The oil temperature rate of climb reaches setting value, and controls live electric bell electric whistle to send alarm by background server.
2. as claimed in claim 1 a kind of multi way temperature for oil-filled transformer detect guard method it is characterised in that：?
Oil tank for oil immersion type transformer is internally provided with three temperature probes, and the top of oil tank for oil immersion type transformer is provided with a temperature and visits
Head, two other temperature probe is arranged on the bottom of oil tank for oil immersion type transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610745434.3A CN106404191A (en) | 2016-08-29 | 2016-08-29 | Multipath temperature detection protection method for oil-immersed transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610745434.3A CN106404191A (en) | 2016-08-29 | 2016-08-29 | Multipath temperature detection protection method for oil-immersed transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106404191A true CN106404191A (en) | 2017-02-15 |
Family
ID=58003047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610745434.3A Pending CN106404191A (en) | 2016-08-29 | 2016-08-29 | Multipath temperature detection protection method for oil-immersed transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106404191A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110375884A (en) * | 2019-07-31 | 2019-10-25 | 广州粤能电力科技开发有限公司 | Electrical equipment temperature monitors system |
| CN111256860A (en) * | 2020-02-11 | 2020-06-09 | 雅砻江流域水电开发有限公司 | Reliable operation method of temperature control box of single-phase air-cooled transformer |
| CN111882835A (en) * | 2020-07-29 | 2020-11-03 | 合肥阳光智维科技有限公司 | Fault early warning method and device of inverter and computer readable storage medium |
| CN112577619A (en) * | 2020-12-10 | 2021-03-30 | 宁波迦南智能电气股份有限公司 | Terminal block temperature real-time monitoring method of intelligent electric meter |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384796A (en) * | 2011-09-28 | 2012-03-21 | 商洛供电局 | Multi-resistor remote temperature measuring device for transformer |
| CN203837835U (en) * | 2013-12-31 | 2014-09-17 | 温州市图盛科技有限公司 | Distribution transformer temperature monitoring device |
| CN104236728A (en) * | 2014-09-30 | 2014-12-24 | 国家电网公司 | Oil temperature monitoring device and oil temperature monitoring system for power transformers |
| CN104236754A (en) * | 2014-08-21 | 2014-12-24 | 国家电网公司 | Oil-immersed transformer winding hot-spot temperature monitoring method based on tank wall temperature |
-
2016
- 2016-08-29 CN CN201610745434.3A patent/CN106404191A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384796A (en) * | 2011-09-28 | 2012-03-21 | 商洛供电局 | Multi-resistor remote temperature measuring device for transformer |
| CN203837835U (en) * | 2013-12-31 | 2014-09-17 | 温州市图盛科技有限公司 | Distribution transformer temperature monitoring device |
| CN104236754A (en) * | 2014-08-21 | 2014-12-24 | 国家电网公司 | Oil-immersed transformer winding hot-spot temperature monitoring method based on tank wall temperature |
| CN104236728A (en) * | 2014-09-30 | 2014-12-24 | 国家电网公司 | Oil temperature monitoring device and oil temperature monitoring system for power transformers |
Non-Patent Citations (1)
| Title |
|---|
| 张昆: "电力变压器常见故障分析及预防", 《电子世界》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110375884A (en) * | 2019-07-31 | 2019-10-25 | 广州粤能电力科技开发有限公司 | Electrical equipment temperature monitors system |
| CN111256860A (en) * | 2020-02-11 | 2020-06-09 | 雅砻江流域水电开发有限公司 | Reliable operation method of temperature control box of single-phase air-cooled transformer |
| CN111882835A (en) * | 2020-07-29 | 2020-11-03 | 合肥阳光智维科技有限公司 | Fault early warning method and device of inverter and computer readable storage medium |
| CN112577619A (en) * | 2020-12-10 | 2021-03-30 | 宁波迦南智能电气股份有限公司 | Terminal block temperature real-time monitoring method of intelligent electric meter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106404191A (en) | Multipath temperature detection protection method for oil-immersed transformer | |
| CN103854446B (en) | A kind of dynamic temperature rise diagnostic alarms method and apparatus of high-tension switch cabinet | |
| US10203293B2 (en) | Method for lightning stroke identification and location on optical fiber composite overhead ground wire | |
| CN202915975U (en) | Oil level automatic monitoring and warning system of expansion tank of transformer | |
| CN102494737A (en) | Oil level monitoring method and system of oil immersed type transformer | |
| CN102680804B (en) | Lightning electric field change signal measuring system and method | |
| CN107219424A (en) | A kind of infrared measurement of temperature heating defect method of discrimination and system | |
| CN105371967A (en) | Power cable joint temperature measuring device | |
| CN103198602A (en) | Line type temperature sensing fire detector and alarm method thereof | |
| CN110673027A (en) | Low-voltage circuit breaker connector fault detection method and device | |
| CN105759127A (en) | Integrated lightning early warning system and method | |
| CN204679557U (en) | Judge that AC signal seals in the detection system of straight-flow system | |
| US10823622B2 (en) | Temperature measurement in switchgear stations | |
| CN109781266A (en) | A kind of the heating power distribution and overheating warning system of Substation Electric Equipment key position | |
| CN102540021A (en) | Method for monitoring GIS (gas insulated switchgear) by aid of high-frequency partial discharge online system | |
| CN105068150A (en) | Thundercloud positioning method based on multiple data operation | |
| CN105182137A (en) | Method and apparatus for diagnosing faults of an electrical anti-freezing heating unit | |
| CN202501904U (en) | Oil level monitoring system of oil-immersed transformer | |
| CN204373804U (en) | Temperature polling instrument | |
| CN105759172A (en) | Active grounding system abnormality detection device | |
| KR101532979B1 (en) | System of protective control for substation facilities | |
| CN105092093A (en) | Transformer station power plant temperature measurement warning system | |
| CN111562450B (en) | System and method for monitoring service life of reactor | |
| CN114283330B (en) | Online inspection identification method and system based on multi-source data | |
| CN202378906U (en) | Constant temperature type composite temperature sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170215 |