CN115096354A - System for monitoring oil flow state inside transformer - Google Patents
System for monitoring oil flow state inside transformer Download PDFInfo
- Publication number
- CN115096354A CN115096354A CN202210572877.2A CN202210572877A CN115096354A CN 115096354 A CN115096354 A CN 115096354A CN 202210572877 A CN202210572877 A CN 202210572877A CN 115096354 A CN115096354 A CN 115096354A
- Authority
- CN
- China
- Prior art keywords
- oil
- transformer
- detection unit
- vibration
- central processor
- 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
- 238000012544 monitoring process Methods 0.000 title claims abstract description 22
- 238000001514 detection method Methods 0.000 claims abstract description 109
- 239000007788 liquid Substances 0.000 claims description 25
- 230000000903 blocking effect Effects 0.000 claims description 18
- 238000002604 ultrasonography Methods 0.000 claims description 13
- 239000000523 sample Substances 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 9
- 230000002159 abnormal effect Effects 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000000007 visual effect Effects 0.000 claims description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/048—Monitoring; Safety
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/04—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for transformers
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Automation & Control Theory (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention discloses a monitoring system for the oil flow state in a transformer, which relates to the technical field of transformers, and is characterized in that the internal condition of the transformer is detected through an oil temperature detection unit, an oil speed detection unit, a vibration detection unit, an ultrasonic detection unit and an oil level detection unit, the detection result is processed through a central processor, and finally the data in the transformer can be obtained, namely the central processor can better determine the condition of the transformer oil through the data of the temperature, the flow speed and the like of the oil flow, the problems which possibly occur can be found and processed in advance, the ultrasonic and vibration detection is carried out, and the detected vibration and the ultrasonic and the vibration and the ultrasonic under the normal condition are compared, so that whether the transformer is in the normal state or not can be judged in time, and the oil flow state in the transformer can be detected through the data in various aspects such as the oil temperature, the oil speed, the ultrasonic and the vibration, the problem of current can not in time discover that oil-immersed power transformer takes place internal fault is solved.
Description
Technical Field
The invention belongs to the technical field of transformers, and particularly relates to a system for monitoring the state of oil flow in a transformer.
Background
The transformer is one of important electrical equipment of a transformer substation, and the safe operation of the transformer is directly related to the continuous and stable operation of the whole power system. Oil-immersed power transformers and reactors are high-voltage equipment widely used in current power systems, and are high in manufacturing cost and complex in structure, so that once the high-voltage equipment is broken down and damaged, the repair difficulty is high, the repair time is long, and meanwhile serious economic loss can be brought to enterprises. The protection devices associated with transformers are numerous and include both electric-type protection and non-electric-type protection. The sensitivity of the electric quantity type protection to the internal fault of the transformer body is not enough, mainly because the internal fault starts from turn-to-turn short circuit, the fault current inside the short-circuit turn is not large although being reflected to the line current, and the power supply can be cut off only when the fault develops into multi-turn short circuit or ground short circuit. Therefore, most of the protection related to the transformer body adopts a non-electric quantity type, such as a pressure relief valve protection measure. The gas relay protection is also weighing gas protection, is an important protection measure when an internal fault occurs in the oil-immersed power transformer, and the main protection of the internal fault of the oil-immersed power transformer is heavy gas protection, so that fault equipment can be cut off at once.
Heavy gas protection of a gas relay in an oil-immersed power transformer is realized by means of the fact that insulating oil inside a transformer body surges towards an oil conservator, when the pressure in a transformer box body rises, the insulating oil flows towards the oil conservator, a baffle inside the gas relay is impacted when the oil surges, and when a certain speed is reached, the bearing pressure of the baffle exceeds a setting value and sets the pressure, a contact is closed. Therefore, the insulating oil flow condition in the pipeline directly reflects the oil flow pressure borne by the gas relay baffle, and the flow velocity of the insulating oil flow is in proportional relation with the baffle pressure, so that the problem of a part in the transformer can be better determined by monitoring the oil flow, and the problem can be solved more quickly. Therefore, a system for monitoring the oil flow condition inside the transformer is needed.
Disclosure of Invention
The invention aims to provide a system for monitoring the internal oil flow state of a transformer, which is used for solving the problem that internal faults of an oil-immersed power transformer cannot be found in time.
In order to achieve the above object, the present invention provides a system for monitoring the state of oil flow inside a transformer, comprising: the oil level detection device comprises a central processor, an oil temperature detection unit, an oil speed detection unit, a vibration detection unit, an ultrasonic detection unit and an oil level detection unit;
the oil temperature detection unit is used for detecting the temperature of the transformer oil;
the oil speed detection unit is used for detecting the flow speed of the transformer oil;
the vibration detection unit is used for acquiring vibration of the transformer;
the ultrasonic detection unit is used for acquiring the ultrasonic of the transformer;
the oil level detection unit is used for detecting the amount of oil in the oil conservator;
the central processor is in signal connection with the oil temperature detection unit, the oil speed detection unit, the vibration detection unit, the ultrasonic detection unit and the oil level detection unit, and is used for judging the condition of the transformer oil according to the temperature of the transformer oil detected by the oil temperature detection unit, the flow rate of the transformer oil detected by the oil speed detection unit and the amount of the oil in the conservator detected by the oil level detection unit; the central processor is also used for judging the state of the transformer according to the vibration of the transformer acquired by the vibration detection unit and the ultrasound of the transformer acquired by the ultrasound detection unit.
Preferably, the device further comprises an early warning unit, wherein the early warning unit is used for giving out an acousto-optic alarm.
Preferably, the oil speed detecting unit includes: a measuring bracket, a flow blocking sheet, a torsion spring and a tension sensor,
the measuring bracket is positioned at the inlet of an upper convection port or the inlet of a lower convection port of the transformer;
the flow blocking sheet is rotationally connected with the measuring bracket;
the torsion spring is used for enabling the flow blocking piece to rotate in the reverse direction;
the detection tension end of the tension sensor is fixedly connected with the flow blocking piece, the data transmission end of the tension sensor is electrically connected with the central processor, when oil impacts the flow blocking plate, the flow blocking piece rotates, the numerical value detected by the tension sensor changes, and the central processor obtains the flow rate through the change of the numerical value detected by the tension sensor.
Preferably, the oil temperature detection unit comprises a detection probe and a temperature analysis module;
the detection probe is used for detecting the temperature of the transformer oil;
the temperature analysis module is connected with the detection probe and used for analyzing the numerical value of the temperature, and the temperature analysis module is in signal connection with the central processor.
Preferably, the central processor is further configured to determine the state of the transformer according to the vibration of the transformer collected by the vibration detection unit and the ultrasound of the transformer collected by the ultrasound detection unit, and specifically includes:
the central processor receives the vibration signal and the ultrasonic signal in real time, compares the vibration signal and the ultrasonic signal received in real time with the set vibration signal and ultrasonic signal value in real time, and if one or two of the vibration signal and the ultrasonic signal are higher than the set value, the transformer is in an abnormal state, the central processor sends out a noise abnormal alarm instruction, otherwise, the transformer is in a normal state.
Preferably, the system further comprises a wireless communication module, and the wireless communication module is used for receiving the signal sent by the central processor in real time and sending the signal to the monitoring center and the mobile client.
Preferably, the oil level detection unit comprises a liquid level sensor and a liquid level analyzer, the liquid level sensor floats on the oil surface of the transformer, the liquid level analyzer is used for converting signals output by the liquid level sensor into specific liquid level information, and the liquid level analyzer is electrically connected with the central processor.
Preferably, fixedly connected with buchholz relay on the connecting pipe of transformer conservator and oil tank, buchholz relay with central treater communication connection, buchholz relay be used for to central treater sends light mash gas signal, buchholz relay's heavy mash gas signal is used for controlling the transformer tripping operation.
Compared with the prior art, the invention has the following beneficial effects:
the oil flow state monitoring system in the transformer provided by the invention detects the internal condition of the transformer through the oil temperature detection unit, the oil speed detection unit, the vibration detection unit, the ultrasonic detection unit and the oil level detection unit, the detection result is processed through the central processor, and finally the data in the transformer can be obtained, namely the central processor can better determine the condition of the transformer oil through the data of the temperature, the flow rate and the like of the oil flow, can find and process possible problems in advance, can timely judge whether the transformer is in a normal state through detecting the ultrasonic and the vibration and comparing the detected vibration with the ultrasonic and the vibration and the ultrasonic under the normal condition, thereby detecting the oil flow state in the transformer through the data in various aspects such as the oil temperature, the oil speed, the ultrasonic and the vibration, the problem of current can not in time discover that oil-immersed power transformer takes place internal fault is solved.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only one embodiment of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a system for monitoring the internal oil flow state of a transformer according to the present invention;
fig. 2 is a schematic structural view of the inside of a buchholz relay according to one embodiment of the present invention;
wherein: 1. a fixed mount; 2. light gas contact; 3. a light gas movable block; 4. heavy gas contacts; 5. heavy gas movable block.
Detailed Description
The technical solution of the present invention is described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the system for monitoring the state of oil flow inside a transformer provided by the present invention comprises: the oil level detection device comprises a central processor, an oil temperature detection unit, an oil speed detection unit, a vibration detection unit, an ultrasonic detection unit and an oil level detection unit;
the oil temperature detection unit is used for detecting the temperature of the transformer oil;
the oil speed detection unit is used for detecting the flow speed of the transformer oil;
the vibration detection unit is used for acquiring vibration of the transformer;
the ultrasonic detection unit is used for acquiring the ultrasonic of the transformer;
the oil level detection unit is used for detecting the amount of oil in the conservator;
the central processor is in signal connection with the oil temperature detection unit, the oil speed detection unit, the vibration detection unit, the ultrasonic detection unit and the oil level detection unit, and is used for judging the condition of the transformer oil according to the temperature of the transformer oil detected by the oil temperature detection unit, the flow rate of the transformer oil detected by the oil speed detection unit and the amount of the oil in the conservator detected by the oil level detection unit; the central processor is also used for judging the state of the transformer according to the vibration of the transformer acquired by the vibration detection unit and the ultrasound of the transformer acquired by the ultrasound detection unit.
According to the oil flow state monitoring system in the transformer, the condition inside the transformer is detected through the oil temperature detection unit, the oil speed detection unit, the vibration detection unit, the ultrasonic detection unit and the oil level detection unit, the detection result is analyzed through the central processor, and finally data inside the transformer can be obtained, namely the central processor can better determine the condition of the transformer oil through the temperature, the flow speed and other data of the oil flow, the problems which possibly occur can be found in advance and processed, the vibration and the ultrasonic of the transformer oil are detected through the detection of the ultrasonic and the vibration, the vibration and the ultrasonic under the normal condition are compared, so that whether the transformer is in the normal state or not can be judged in time, and the oil flow state inside the transformer is detected through the multi-aspect data of the oil temperature, the oil speed, the ultrasonic, the vibration and the like.
In one embodiment, the central processor is further configured to determine the state of the transformer according to the vibration of the transformer collected by the vibration detection unit and the ultrasound of the transformer collected by the ultrasound detection unit, and specifically includes: the central processor receives the vibration signal and the ultrasonic signal in real time, compares the vibration signal and the ultrasonic signal received in real time with a set vibration signal and an ultrasonic signal value in real time, if one or two of the received vibration signal and the received ultrasonic signal are higher than a set value, the transformer is in an abnormal state, the central processor sends a noise abnormity alarm instruction to the early warning unit, and otherwise, the transformer is in a normal state.
With continued reference to fig. 1, the monitoring system for the oil flow state inside the transformer further includes an early warning unit, the early warning unit is configured to send out an audible and visual alarm according to the abnormal noise alarm instruction, specifically, the early warning unit further includes: the oil level warning device comprises a first alarm, a second alarm and a third alarm, wherein the first alarm is used for early warning the oil speed, the second alarm is used for early warning vibration and ultrasound, and the third alarm is used for early warning the oil temperature and the oil level. Can notice alarm information according to acousto-optic warning's warning promptly, the signal of three alarm sends to the surveillance center through wireless communication module, and the surveillance center is according to the siren signal of difference, confirms whether the early warning of oil speed or vibrations or supersound or oil level and oil temperature to the data of confirming the early warning that can be faster, and make corresponding adjustment to the transformer.
In one embodiment, the oil speed detection unit comprises a measurement bracket, a flow blocking sheet, a torsion spring and a tension sensor,
the measuring bracket is positioned at the inlet of an upper convection port or the inlet of a lower convection port of the transformer;
the flow blocking sheet is rotationally connected with the measuring bracket;
the torsion spring is used for enabling the flow blocking piece to rotate in the reverse direction;
the detection tension end of the tension sensor is fixedly connected with the flow blocking sheet, the data transmission end of the tension sensor is electrically connected with the central processor, when oil impacts the flow blocking plate, the flow blocking sheet rotates, the numerical value detected by the tension sensor changes, the central processor obtains the flow velocity through the change of the numerical value detected by the tension sensor, under different pressures, the relationship between the tension sensor and the flow velocity changes, but the specific corresponding relationship can be obtained through limited experimental measurement, and the description is omitted.
In one embodiment, the oil temperature detection unit comprises a detection probe and a temperature analysis module;
the detection probe is used for detecting the temperature of the transformer oil;
the temperature analysis module is connected with the detection probe and used for analyzing the numerical value of the temperature, and the temperature analysis module is in signal connection with the central processor.
The oil temperature detection unit can measure the temperature of oil in the conservator through the detection probe, can judge that heat dissipation is not needed through the change of the temperature, and particularly, when the temperature of the oil in the conservator rises to a certain set value, the heat dissipation function is started.
In one embodiment, the oil level detection unit comprises a liquid level sensor and a liquid level analyzer, the liquid level sensor floats on the oil surface of the transformer, the liquid level analyzer is used for converting signals output by the liquid level sensor into specific liquid level information, and the liquid level analyzer is electrically connected with the central processor.
Specifically, the liquid level sensor adopts a floating ball type sensor, the specific gravity of a magnetic floating ball of the floating ball type sensor is less than 0.5, the magnetic floating ball can float above the liquid level and move up and down along a measuring conduit, a measuring element is arranged in the measuring conduit, a measured liquid level signal is converted into a resistance signal in direct proportion to liquid level change under the action of external magnetism, and an electronic unit is converted into a standard signal of 4-20 ma to be output to the liquid level analyzer.
The oil level detection unit can judge the amount of oil in the oil conservator according to the result detected by the liquid level sensor, so that a proper amount of oil in the oil conservator is guaranteed, the oil conservator is displayed by the central processor, observation on a transformer is not needed, and the oil level detection unit is more convenient to use.
In one embodiment, the system for monitoring the oil flow state inside the transformer further comprises a wireless communication module, wherein the wireless communication module is used for receiving the signal sent by the central processor in real time and sending the signal to the monitoring center and the mobile client. Wherein, the signal that the central processor sent includes: the transformer oil temperature value and oil speed value, vibration signal, ultrasonic signal, noise abnormal alarm and other data received by or processed by the central processor.
In one embodiment, a gas relay is fixedly connected to a connecting pipe of the transformer conservator and the oil tank, the gas relay is in communication connection with the central processor, the gas relay is used for sending a light gas signal to the central processor, and a heavy gas signal of the gas relay is used for controlling tripping of the transformer.
Specifically, as shown in fig. 1 and 2, the buchholz relay includes: a fixed frame 1, a light gas contact 2, a light gas movable plate 3, a heavy gas contact 4 and a heavy gas movable plate 5,
the fixing frame 1 is a cuboid plate, two hollow mounting holes are formed in the middle of the cuboid plate, and the two mounting holes are rectangular holes;
the light gas contact 2 is fixedly connected with the fixing frame 1, and particularly, the light gas contact is fixed on the long edge in the middle of the two mounting holes on the front surface of the fixing frame 1;
one end of the light gas movable plate 3 is rotatably connected with the fixed frame 1, and the light gas movable plate 3 can be in contact with the light gas contact 2 to send a light gas signal by rotating; namely, one end of the light gas movable plate 3 is connected with one of the mounting holes of the fixed frame 1, when the light gas movable plate 3 rotates to a proper position, the other end of the light gas movable plate 3 is contacted with the light gas contact 2 to send out a light gas signal;
the heavy gas contact 4 is fixedly connected with the fixing frame 1, and specifically, the heavy gas contact 4 is fixed on the fixing frame 1 between the two mounting holes;
the heavy gas movable plate 5 is rotatably connected with the fixed frame 1, the heavy gas movable plate 5 contacts with the heavy gas contact 4 to send out a heavy gas signal, namely, the heavy gas movable plate 5 is rotatably installed in the other installation hole of the fixed frame 1, and when the heavy gas movable plate 5 rotates to a proper position, the other end of the heavy gas movable plate 5 contacts with the heavy gas contact 4 to send out the heavy gas signal.
In the gas relay, the light gas movable plate 3 can be far away from the light gas contact 2 under the buoyancy of oil, when the gas has a small flow speed and is not rapid, the gas is gathered at the position of the light gas movable plate 3, the light gas movable plate 3 loses the buoyancy and is in contact with the light gas contact 2 to send a light gas signal, when the gas is large and the flow speed is high, the heavy gas movable plate 5 is impacted, the heavy gas contact 4 is in contact with the heavy gas movable plate 5, and the heavy gas contact is sent out and is tripped.
The above disclosure is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of changes or modifications within the technical scope of the present invention, and shall be covered by the scope of the present invention.
Claims (8)
1. A transformer internal oil flow state monitoring system, characterized by comprising: the system comprises a central processor, an oil temperature detection unit, an oil speed detection unit, a vibration detection unit, an ultrasonic detection unit and an oil level detection unit;
the oil temperature detection unit is used for detecting the temperature of the transformer oil;
the oil speed detection unit is used for detecting the flow speed of the transformer oil;
the vibration detection unit is used for acquiring vibration of the transformer;
the ultrasonic detection unit is used for acquiring the ultrasonic of the transformer;
the oil level detection unit is used for detecting the amount of oil in the conservator;
the central processor is in signal connection with the oil temperature detection unit, the oil speed detection unit, the vibration detection unit, the ultrasonic detection unit and the oil level detection unit, and is used for judging the condition of the transformer oil according to the temperature of the transformer oil detected by the oil temperature detection unit, the flow rate of the transformer oil detected by the oil speed detection unit and the amount of the oil in the conservator detected by the oil level detection unit; the central processor is also used for judging the state of the transformer according to the vibration of the transformer acquired by the vibration detection unit and the ultrasound of the transformer acquired by the ultrasound detection unit.
2. The system for monitoring the oil flow state inside the transformer according to claim 1, further comprising an early warning unit for emitting an audible and visual alarm.
3. The system for monitoring the oil flow state inside the transformer according to claim 1, wherein the oil speed detecting unit comprises: a measuring bracket, a flow blocking sheet, a torsion spring and a tension sensor,
the measuring bracket is positioned at the inlet of an upper convection port or the inlet of a lower convection port of the transformer;
the flow blocking sheet is rotationally connected with the measuring bracket;
the torsion spring is used for enabling the flow blocking piece to rotate in the reverse direction;
the detection tension end of the tension sensor is fixedly connected with the flow blocking piece, the data transmission end of the tension sensor is electrically connected with the central processor, when oil impacts the flow blocking plate, the flow blocking piece rotates, the numerical value detected by the tension sensor changes, and the central processor obtains the flow rate through the change of the numerical value detected by the tension sensor.
4. The system for monitoring the oil flow state inside the transformer according to claim 1, wherein the oil temperature detecting unit comprises a detecting probe and a temperature analyzing module;
the detection probe is used for detecting the temperature of the transformer oil;
the temperature analysis module is connected with the detection probe and used for analyzing the numerical value of the temperature, and the temperature analysis module is in signal connection with the central processor.
5. The system for monitoring the oil flow state inside the transformer according to claim 1, wherein the central processor is further configured to determine the state of the transformer according to the vibration of the transformer collected by the vibration detection unit and the ultrasound of the transformer collected by the ultrasound detection unit, and specifically includes:
the central processor receives the vibration signal and the ultrasonic signal in real time, compares the vibration signal and the ultrasonic signal received in real time with a set vibration signal and an ultrasonic signal value in real time, and if one or two of the received vibration signal and the received ultrasonic signal are higher than the set value, the transformer is in an abnormal state, the central processor sends out a noise abnormal alarm instruction, otherwise, the transformer is in a normal state.
6. The transformer internal oil flow state monitoring system according to claim 1, further comprising a wireless communication module for receiving the signal transmitted from the central processor in real time and transmitting the signal to a monitoring center and a mobile client.
7. The transformer internal oil flow state monitoring system according to claim 1, wherein the oil level detection unit comprises a liquid level sensor floating on the oil surface of the transformer and a liquid level analyzer for converting the signal output by the liquid level sensor into specific liquid level information, and the liquid level analyzer is electrically connected to the central processor.
8. The system for monitoring the oil flow state inside the transformer according to claim 1, wherein a buchholz relay is fixedly connected to the connecting pipe of the transformer conservator and the oil tank, the buchholz relay is in communication connection with the central processor, the buchholz relay is used for sending a light gas signal to the central processor, and a heavy gas signal of the buchholz relay is used for controlling the transformer trip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210572877.2A CN115096354A (en) | 2022-05-25 | 2022-05-25 | System for monitoring oil flow state inside transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210572877.2A CN115096354A (en) | 2022-05-25 | 2022-05-25 | System for monitoring oil flow state inside transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115096354A true CN115096354A (en) | 2022-09-23 |
Family
ID=83288347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210572877.2A Pending CN115096354A (en) | 2022-05-25 | 2022-05-25 | System for monitoring oil flow state inside transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115096354A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116165535A (en) * | 2023-04-19 | 2023-05-26 | 国网山西省电力公司电力科学研究院 | Heavy gas misoperation prevention gas relay detection device and intelligent sensing method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3398669A1 (en) * | 2017-05-03 | 2018-11-07 | Vaisala, OYJ | System for preventing gas bubbles in oil flow to enter a high-voltage device and a method for preventing gas bubbles to enter a high-voltage device |
| CN208254536U (en) * | 2018-05-17 | 2018-12-18 | 山东科技大学 | A kind of oil filter state monitoring device for converter power transformer |
| CN212207527U (en) * | 2020-03-17 | 2020-12-22 | 西南石油大学 | Transformer on-line monitoring device based on multi-source information fusion |
| CN213212033U (en) * | 2020-10-30 | 2021-05-14 | 国网新疆电力有限公司哈密供电公司 | Early warning gas relay |
-
2022
- 2022-05-25 CN CN202210572877.2A patent/CN115096354A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3398669A1 (en) * | 2017-05-03 | 2018-11-07 | Vaisala, OYJ | System for preventing gas bubbles in oil flow to enter a high-voltage device and a method for preventing gas bubbles to enter a high-voltage device |
| CN208254536U (en) * | 2018-05-17 | 2018-12-18 | 山东科技大学 | A kind of oil filter state monitoring device for converter power transformer |
| CN212207527U (en) * | 2020-03-17 | 2020-12-22 | 西南石油大学 | Transformer on-line monitoring device based on multi-source information fusion |
| CN213212033U (en) * | 2020-10-30 | 2021-05-14 | 国网新疆电力有限公司哈密供电公司 | Early warning gas relay |
Non-Patent Citations (2)
| Title |
|---|
| 余祖俊: "高速铁路综合检测技术", vol. 978, 30 June 2021, 中国铁道出版社, pages: 107 * |
| 刘娟: "船厂供电系统运行与维护", vol. 978, 31 October 2021, 北京理工大学出版社, pages: 173 - 174 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116165535A (en) * | 2023-04-19 | 2023-05-26 | 国网山西省电力公司电力科学研究院 | Heavy gas misoperation prevention gas relay detection device and intelligent sensing method thereof |
| CN116165535B (en) * | 2023-04-19 | 2023-09-08 | 国网山西省电力公司电力科学研究院 | Heavy gas misoperation prevention gas relay detection device and intelligent sensing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106404078B (en) | A kind of transformer online monitoring device | |
| US9823289B2 (en) | Automated digital earth fault system | |
| CN101452052B (en) | Gas relay calibration stand and calibration method thereof | |
| CN104569481B (en) | Buchholz relay oil stream flow velocity acquisition system and grave gas setting valve method of calibration | |
| US6229448B1 (en) | Intrinsically safe fluid tank overfill protection system | |
| CN109211309B (en) | Integrated on-line monitoring device for dissolved hydrogen, micro-water and oil pressure in oil of oil charging equipment | |
| CN201145734Y (en) | Gas-actuated relay calibration stand | |
| CN108956957A (en) | A kind of hydrogen gas sensor for oil dissolved gas detection | |
| CN108899180A (en) | A kind of transformer digital monitoring protective device | |
| CN115096354A (en) | System for monitoring oil flow state inside transformer | |
| CN108871498A (en) | Condenser type adaptive universal liquid level emasuring device and method | |
| CN110926537A (en) | Multifunctional oil-immersed transformer measuring device | |
| CN108871491B (en) | Intelligent oil level meter for transformer bushing | |
| CN103325531A (en) | Intelligent oil level indicating device | |
| KR20130110220A (en) | Combined hydrogen and pressure sensor assembly | |
| CN203300386U (en) | Intelligent oil level indicating device | |
| CN217788180U (en) | Intelligent monitoring device for distribution transformer | |
| CN110954819A (en) | Gas relay state identification method based on baffle corner and heavy gas signal | |
| CN114509671B (en) | GIS equipment contact state and load condition judgment method and system | |
| CN216283672U (en) | Transformer oil conservator defect monitoring device based on edge calculation | |
| CN214426796U (en) | Non-contact photoelectric type power transformer conservator oil level monitoring device | |
| CN214226816U (en) | Multifunctional float-type gas relay | |
| CN111863522A (en) | Electronic gas relay | |
| CN113405630A (en) | Monitoring devices of transformer oil level operation safety based on wireless communication | |
| CN202823951U (en) | Electrified water washing vehicle-mounted water tank monitoring device and electrified water washing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |