CN203786181U - On-line monitoring system capable of monitoring grounding current of transformer core in extremely low temperature environment - Google Patents
On-line monitoring system capable of monitoring grounding current of transformer core in extremely low temperature environment Download PDFInfo
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- CN203786181U CN203786181U CN201320710583.8U CN201320710583U CN203786181U CN 203786181 U CN203786181 U CN 203786181U CN 201320710583 U CN201320710583 U CN 201320710583U CN 203786181 U CN203786181 U CN 203786181U
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- heating
- sensor
- unit
- low temperature
- heating unit
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 28
- 238000010438 heat treatment Methods 0.000 claims abstract description 41
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052802 copper Inorganic materials 0.000 claims abstract description 14
- 239000010949 copper Substances 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 5
- 229910052751 metal Inorganic materials 0.000 claims abstract description 5
- 239000012530 fluid Substances 0.000 claims description 17
- 239000000565 sealant Substances 0.000 claims description 17
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 4
- 239000003292 glue Substances 0.000 abstract description 3
- 238000009413 insulation Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001131 transforming effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002405 diagnostic procedure Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Testing Relating To Insulation (AREA)
Abstract
The utility model discloses an on-line monitoring system capable of monitoring the grounding current of a transformer core in an extremely low temperature environment, and the system comprises a collection unit, a ground copper bar lead, a processor, a display unit, and an alarm system. The interior of the collection unit is provided with a current transmitter. The system is characterized in that the collection unit is a cold-proof sensor which consists of a sensor housing, a heating element, an electronic device, sealing glue, a lead, and a heat-supply power source; the sensor housing is made of metal; the electronic device is placed at the center of the interior of the sensor, and comprises the current transmitter; the periphery of the electronic device is provided with one or more heating units consists of heating meshes which respectively consists of a thermal resistor; the power supply of the heating unit is achieved through that the lead is used for leading the heating unit out of the sensor housing to be connected with the heat-supply power source of a heating system; and sealing glue is filled between the heating unit and the electronic device, and between the heating element and the sensor housing. The monitoring system provided by the utility model can operate safely and reliably in the extremely low temperature environment, and the operating temperature of the system can reach 55 degrees below zero.
Description
Technical field
The utility model belongs to intelligent transformer detection field in power transmission and transforming equipment, be specifically related to a kind of can be under the environment of extreme low temperature, can monitor and the on-line monitoring system of analyzing the node current unshakable in one's determination of the transformer moving under extreme low temperature environment accurately in real time, and can reporting to the police to the fault having occurred in time, thereby the safe and stable operation of transformer under raising extreme low temperature environment.
Background technology
At present, along with social development, China's power industry intelligent power network construction is greatly improved, but because China area is wide, the climate difference between different regions is larger, especially under extreme low temperature, existing main flow on-line monitoring device for transmission line, because electronic component is extremely low in the reliability of extreme environment, can not meet the operational monitoring requirement under extremely cold Weather Of Area condition, as battery in-fighting increases, energy storage efficiency sharply declines; The variation of electronic devices and components physical attribute causes circuit to work; The mechanical faults that insulating material, welding compound hydraulic performance decline cause etc., are difficult to long-term stable operation under extremely cold weather conditions.Under extreme low temperature, except the state parameter of sign power transmission and transforming equipment insulation may change, the diagnostic method of all kinds of condition checkout gears under extreme low temperature and certain change also can occur to the threshold value of key parameter, under extreme low temperature, the reliability of all kinds of condition checkout gears also can be subject to great test.In transformer online monitoring system now, not yet there are product and technology can overcome the low temperature Problem of Failure of on-line monitoring system sensor.
In view of this, the utility model provides a kind of on-line monitoring system that can monitor at the utmost point low temperature environment Transformer Core Grounding electric current, to meet practical application needs.
Summary of the invention
The purpose of this utility model is: overcome the deficiencies in the prior art, invent a kind of Transformer Core Grounding electric current on-line monitoring system that can use safely and reliably under extreme low temperature environment.
The technical scheme that the utility model adopts is: can be at the on-line monitoring system of utmost point low temperature environment monitoring Transformer Core Grounding electric current, comprise collecting unit, grounding copper bar lead-in wire, processor, display unit, warning system, collecting unit inside is provided with current transducer, it is characterized in that, on the copper bar of Transformer Core Grounding point, be provided with grounding copper bar lead-in wire, grounding copper bar lead-in wire is connected to collecting unit, Leakage Current unshakable in one's determination flows to the input block of collecting unit from grounding copper bar lead-in wire, pass the signal in processor via the current transducer of collecting unit, treated device judgement is also sent to display unit demonstration by testing result, if Leakage Current unshakable in one's determination exceeds default warning threshold, warning system can be sent warning,
Described collecting unit is cold-proof sensor, cold-proof sensor is by sensor outer housing, heating unit, electron device, fluid sealant, lead-in wire and heat supply power supply composition, sensor outer housing is made up of metal quality, electron device is placed in the middle of sensor internal, comprise current transducer, the heating unit that the heating net that electron device peripheral disposition one deck or which floor are made up of thermal resistance forms, the power supply of heating unit is drawn sensor outer housing by lead-in wire and is connected corresponding heating system for thermoelectric generator, heating unit is for heating cold-proof sensor internal, prevent that at extremely cold weather sensor internal electron device is subject to cold to affect inefficacy, between heating unit and electron device and between heating unit and sensor outer housing, fill up fluid sealant.
As above can, at the on-line monitoring system of utmost point low temperature environment monitoring Transformer Core Grounding electric current, it is characterized in that, heating unit and electron device will maintain a certain distance and will have between two parts the fluid sealant of q.s.
As above can, at the on-line monitoring system of utmost point low temperature environment monitoring Transformer Core Grounding electric current, it is characterized in that, fluid sealant adopts epoxy resin, military fluid sealant.
The beneficial effects of the utility model are: the utility model is based on traditional on-line monitoring system principle, according to innovation obtain a kind of can be under extreme low temperature weather can safe and reliable use iron core grounding electric current on-line monitoring system, its performance safety is reliable, and operating ambient temperature can reach-55 DEG C.
Brief description of the drawings
Fig. 1 is the work flow diagram of the utility model on-line monitoring system.
Fig. 2 is the cold-proof sensor construction figure of the utility model.
Embodiment
In order to understand better the utility model, further illustrate content of the present utility model below in conjunction with embodiment, but content of the present utility model is not only confined to the following examples.Those skilled in the art can make various changes or modifications the utility model, and these equivalent form of values are equally within the listed claims limited range of the application.
Symbol description in accompanying drawing: 1-sensor outer housing, 2-fluid sealant, 3-heating unit, 4-electron device, 5-lead-in wire, 6-confession thermoelectric generator.
Integral Thought of the present utility model is, connects the cold-proof sensor of native system at Transformer Core Grounding copper bar place with lead-in wire, and the state of transformer is monitored and judged to the size that system can be monitored Transformer Core Grounding electric current.Aspect the protection of sensor, use the metal shell protection sensor of excellent sealing can in situations such as colliding with, vibrate, fall, not damage and also can play the effects such as moisture-proof anticorrosive erosion.Thereby the electron device of sensor uses army's grade electron device to improve the originally stability in extremely cold weather of sensor electronics; sensor internal adds heating unit; its sensor the Key Electron Device is in center sensor position; and fill up fluid sealant at sensor internal; the Main Function of fluid sealant is for to carry out mechanical protection and insulation to sensor; by the operation of two aspect protection sensor internal electron devices of insulation and heating under utmost point cold air is waited, thereby improve its reliability and stability.
Workflow of the present utility model as shown in Figure 1, on the copper bar of Transformer Core Grounding point, be provided with extension line, Leakage Current unshakable in one's determination will flow to the input block of cold-proof sensor from extension line, pass the signal in processor via the current transducer of cold-proof sensor, the range of current transducer need to be selected according to actual conditions, treated device judgement also sends to display unit demonstration by the result of detection, understand iron core grounding current situation for staff, if wherein Leakage Current unshakable in one's determination exceeds default warning threshold, warning system can be sent warning, warning is divided into audible alarm and pilot lamp is reported to the police two kinds.
Cold-proof sensor arrangement as shown in Figure 2.Wherein go between 5 for connecting the lead-in wires of ground strap copper bar, iron core grounding electric current can be sent in cold-proof sensor by this lead-in wire 5, thereby allow cold-proof sensor image data submit to information to processor.
Sensor outer housing 1 is made up of metal quality, and its major function, for the cold-proof sensor of protection, prevents that cold-proof sensor internal electron device is damaged.Electron device 4 is placed in the middle of sensor internal, comprises the electron devices such as sensor current transmitter.
The heating net that electron device 4 peripheral disposition one decks or which floor are made up of thermal resistance forms heating unit 3, the power supply of heating unit 3 can be drawn sensor outer housing 1 and be connected corresponding heating system for thermoelectric generator 6 by lead-in wire, heating unit 3 Main Functions, for cold-proof sensor internal is heated, prevent that at extremely cold weather sensor internal electron device 4 is subject to cold to affect inefficacy.It is pointed out that this heating unit 3 will maintain a certain distance with electron device 4, prevent that the heated unit 3 of electron device 4 from burning out in heating process.
After the heating unit of sensor internal 3 and electron device 4 have been laid, after each sensor parts connection is completed and checking, need to fill fluid sealant 2 to sensor internal, acting as of sealing glue 2 ensure mechanical property, the insulation of sensor and prevent the functions such as the heated unit 3 of electron device 4 burns out in heating process, wherein it should be noted that must ensure this heating unit 3 will and electron device 4 maintain a certain distance and will have the fluid sealant 2 of q.s between two parts.Fluid sealant can adopt the material with insulation and heat insulating function, such as epoxy resin, military fluid sealant etc.
The all electron devices of the utility model use standard army grade electronic devices and components, ensure validity and the reliability of sensor.
These are only embodiment of the present utility model, be not limited to the utility model, therefore, all within spirit of the present utility model and principle, any amendment of making, be equal to replacement, improvement etc., within all should being included in claim scope of the present utility model.
Claims (3)
1. can be at the on-line monitoring system of utmost point low temperature environment monitoring Transformer Core Grounding electric current, comprise collecting unit, grounding copper bar lead-in wire, processor, display unit, warning system, collecting unit inside is provided with current transducer, it is characterized in that, on the copper bar of Transformer Core Grounding point, be provided with grounding copper bar lead-in wire, grounding copper bar lead-in wire is connected to collecting unit, Leakage Current unshakable in one's determination flows to the input block of collecting unit from grounding copper bar lead-in wire, pass the signal in processor via the current transducer of collecting unit, treated device judgement is also sent to display unit demonstration by testing result, if Leakage Current unshakable in one's determination exceeds default warning threshold, warning system can be sent warning,
Described collecting unit is cold-proof sensor, cold-proof sensor is by sensor outer housing, heating unit, electron device, fluid sealant, lead-in wire and heat supply power supply composition, sensor outer housing is made up of metal quality, electron device is placed in the middle of sensor internal, comprise current transducer, the heating unit that the heating net that electron device peripheral disposition one deck or which floor are made up of thermal resistance forms, the power supply of heating unit is drawn sensor outer housing by lead-in wire and is connected corresponding heating system for thermoelectric generator, heating unit is for heating cold-proof sensor internal, prevent that at extremely cold weather sensor internal electron device is subject to cold to affect inefficacy, between heating unit and electron device and between heating unit and sensor outer housing, fill up fluid sealant.
2. according to claim 1 can, at the on-line monitoring system of utmost point low temperature environment monitoring Transformer Core Grounding electric current, it is characterized in that, heating unit and electron device will maintain a certain distance and will have between two parts the fluid sealant of q.s.
3. according to claim 1 can, at the on-line monitoring system of utmost point low temperature environment monitoring Transformer Core Grounding electric current, it is characterized in that, fluid sealant adopts epoxy resin, military fluid sealant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320710583.8U CN203786181U (en) | 2013-11-12 | 2013-11-12 | On-line monitoring system capable of monitoring grounding current of transformer core in extremely low temperature environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320710583.8U CN203786181U (en) | 2013-11-12 | 2013-11-12 | On-line monitoring system capable of monitoring grounding current of transformer core in extremely low temperature environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203786181U true CN203786181U (en) | 2014-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320710583.8U Expired - Lifetime CN203786181U (en) | 2013-11-12 | 2013-11-12 | On-line monitoring system capable of monitoring grounding current of transformer core in extremely low temperature environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203786181U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103675405A (en) * | 2013-11-12 | 2014-03-26 | 国网电力科学研究院武汉南瑞有限责任公司 | Online monitoring system capable of monitoring transformer core grounding current at extremely low temperature |
| CN105388351A (en) * | 2015-10-21 | 2016-03-09 | 中国电力科学研究院 | HVDC line corona current measuring system used in high-altitude area |
| CN112269077A (en) * | 2020-10-10 | 2021-01-26 | 苏州中康电力运营有限公司 | Testing device and testing method for oil-immersed transformer |
-
2013
- 2013-11-12 CN CN201320710583.8U patent/CN203786181U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103675405A (en) * | 2013-11-12 | 2014-03-26 | 国网电力科学研究院武汉南瑞有限责任公司 | Online monitoring system capable of monitoring transformer core grounding current at extremely low temperature |
| CN105388351A (en) * | 2015-10-21 | 2016-03-09 | 中国电力科学研究院 | HVDC line corona current measuring system used in high-altitude area |
| CN112269077A (en) * | 2020-10-10 | 2021-01-26 | 苏州中康电力运营有限公司 | Testing device and testing method for oil-immersed transformer |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140820 |
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| CX01 | Expiry of patent term |