CN209310887U - A kind of inversed current transformer oil level monitoring arrangement - Google Patents
A kind of inversed current transformer oil level monitoring arrangement Download PDFInfo
- Publication number
- CN209310887U CN209310887U CN201920209739.1U CN201920209739U CN209310887U CN 209310887 U CN209310887 U CN 209310887U CN 201920209739 U CN201920209739 U CN 201920209739U CN 209310887 U CN209310887 U CN 209310887U
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- CN
- China
- Prior art keywords
- oil level
- current transformer
- photoelectric sensor
- inversed current
- inversed
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- 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.)
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Abstract
A kind of inversed current transformer oil level monitoring arrangement includes photoelectric sensor (2), signal conversion and transmitter (3) and oil level alarm (4).The photoelectric sensor is attached on the minimum liquid level alarming line of inversed current transformer (1) oil level glass, the input terminal of the photoelectric sensor connection signal conversion and transmitter；The output end of signal conversion and transmitter connects oil level alarm by data line.A kind of inversed current transformer oil level monitoring arrangement of the utility model can carry out in-service monitoring to the oil level of inversed current transformer, effectively prevent the leakage of insulating oil, guarantee to adopt an effective measure in the short time and prevent the decline of insulating oil oil level, ensure that the safe and stable operation of inversed current transformer.
Description
Technical field
The utility model relates to a kind of inversed current transformer oil level monitoring arrangements, belong to current mutual inductor on site and supervise online
Depending on technical field.
Background technique
By carrying out oil level monitoring analysis to inversed current transformer oil, inversed current transformer operation conditions is monitored
It has been a kind of generally acknowledged effective means for ensureing inversed current transformer safe operation, traditional oil level monitoring, which uses, manually patrols
Depending on data are effective poor, it is difficult to realize the real-time oversight to inversed current transformer oil condition.
Inversed current transformer oil level monitors supplement and development of the in-service monitoring technology as manual patrol, because it has
The in-service monitoring to inversed current transformer oil level may be implemented in the advantages of continuous in-service monitoring, its application is for timely
It was found that the failure of inversed current transformer oil leak, avoids accident from playing an important role.Field monitor method is used for
Device, is usually mounted on the oil level form of monitored inversed current transformer by oil level monitoring, automatic alarm.
Summary of the invention
The purpose of this utility model is to be difficult to realize to solve conventional apparatus to inversed current transformer oil condition
Real-time oversight the problem of, a kind of inversed current transformer oil level monitoring arrangement is disclosed.
Technical solution of the utility model is as follows, a kind of inversed current transformer oil level monitoring arrangement, the dress
It sets including photoelectric sensor, signal conversion and transmitter and oil level alarm；It is mutual that the photoelectric sensor is attached to inversed current
On the minimum liquid level alarming line of sensor oil level glass；The input terminal of the photoelectric sensor connection signal conversion and transmitter；
The output end of signal conversion and transmitter connects oil level alarm.
The photoelectric sensor is made of semiconductor laser and photo resistance；Semiconductor laser passes through oil level glass
Infrared signal is issued to insulating oil.
The photo resistance receives the infrared light in insulating oil reflected light electric transducer respectively, receives air, mutual inductor
Infrared light in metallic walls reflected light electric transducer；The photo resistance receives red in insulating oil reflected light electric transducer
Outer photogenerated photoelectric sensor loop current I0, receive air, the infrared light in mutual inductor metallic walls reflected light electric transducer
Generate photoelectric sensor loop current I1。
The utility model has the beneficial effects that a kind of inversed current transformer oil level monitoring arrangement of the utility model can be with
In-service monitoring is carried out to the oil level of inversed current transformer, effectively prevents the leakage of insulating oil, it is ensured that can adopt in the short time
It takes effective measures to prevent the decline of insulating oil oil level, ensure that the safe and stable operation of inversed current transformer.The device can be with
A large amount of manual patrol workload is saved, can be widely applied in inversed current transformer operational application, fault diagnosis.
The utility model uses oil as dielectric, has the inversed current mutual inductance of oil sight glass form
Device.
Detailed description of the invention
Fig. 1 is a kind of inversed current transformer oil level monitoring arrangement structural schematic diagram of the utility model；
In figure, 1 is inversed current transformer；2 be photoelectric sensor；3 be signal conversion and transmitter；4 be oil level report
Alert device.
Specific embodiment
Specific embodiment of the present utility model is as shown in Figure 1.
A kind of inversed current transformer oil level monitoring arrangement of the present embodiment, including the conversion of photoelectric sensor 2, signal and biography
Defeated device 3 and oil level alarm 4.The photoelectric sensor 2 is attached to the minimum liquid level report of 1 oil level glass of inversed current transformer
On alert line；The input terminal of 2 connection signal of the photoelectric sensor conversion and transmitter 3；The output end of signal conversion and transmitter 3
Connect oil level alarm 4.
Inversed current transformer 1 is that photoelectric sensor 2 is attached to inversed current transformer using oil as dielectric
On the minimum liquid level alarming line of 1 oil level glass, when oil leak occurs for inversed current transformer 1, oil level is lower than minimum liquid level report
When alert line, photoelectric sensor 2 will test the signal of not liquid level, be sent to signal conversion and transmitter 3, oil level alarm 4
After receiving the not signal of liquid level, alert, to judge whether insulating oil oil level is normal.
In the present embodiment, photoelectric sensor includes semiconductor laser and photo resistance.
The implementation steps that the present embodiment device is used to monitor inversed current transformer oil level are as follows:
When photoelectric sensor operates normally, infrared signal is being issued always, when current transformer is full of insulating oil,
Infrared light has most of light that can be absorbed when encountering insulating oil, sub-fraction infrared light will reflect back into photosensitive in photoelectric sensor
Resistance.
When the insulating oil leakage in current transformer, infrared light can then encounter air, mutual inductor metallic walls, there is major part
Light can reflect back into the photo resistance in photoelectric sensor, and sub-fraction infrared light will be absorbed by air.
According to the C-V characteristic of photo resistance, using insulating oil as object of reference, setting infrared light is mapped to mutual inductor interior insulation
Loop current after oil is I0, the loop voltage of photoelectric sensor is U0It is constant, then just obtaining the resistance value of photo resistance:
R0=U0/I0 (1)
When infrared illumination is mapped to air, measuring loop current is I1, the loop voltage of photoelectric sensor is U0It is constant, that
Just obtain the resistance value of photo resistance at this time: R1=U0/I1 (2)
By the difference of two resistance and reference resistance R0Multiplied by 100% after comparing, then asks and thoroughly deserves:
|(R1-R0)/R0* 100% | (3)
It proves by the test in a large amount of laboratory and scene, as the total > 5% of formula (3), can determine whether out infrared
The medium that light is irradiated to is changed, i.e., for having liquid level and the not observation window of liquid level on minimum liquid level alarming line,
The signal fed back is different.When oil leak occurs for mutual inductor, and oil level is lower than minimum liquid level alarming line, photoelectric sensor will
The signal for detecting not liquid level is sent to signal conversion and transmitter, after oil level alarm receives the not signal of liquid level, hair
Warning message out, to judge whether insulating oil oil level is normal.
Claims (3)
1. a kind of inversed current transformer oil level monitoring arrangement, which is characterized in that described device includes photoelectric sensor, signal
Conversion and transmitter and oil level alarm；The photoelectric sensor is attached to the minimum liquid of inversed current transformer oil level glass
On the alarming line of position；The input terminal of the photoelectric sensor connection signal conversion and transmitter；Signal conversion and the output of transmitter
End connects oil level alarm by data line.
2. a kind of inversed current transformer oil level monitoring arrangement according to claim 1, which is characterized in that the photoelectricity
Sensor is made of semiconductor laser and photo resistance；Semiconductor laser is issued by oil level glass to insulating oil infrared
Optical signal.
3. a kind of inversed current transformer oil level monitoring arrangement according to claim 2, which is characterized in that described photosensitive
Resistance receives the infrared light in insulating oil reflected light electric transducer respectively, receives air, mutual inductor metallic walls are reflected back photoelectricity
Infrared light in sensor；The photo resistance receives the infrared photogenerated photoelectric sensing in insulating oil reflected light electric transducer
Device loop current I0, receive air, the infrared photogenerated photoelectric sensor in mutual inductor metallic walls reflected light electric transducer returns
Road electric current I1。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920209739.1U CN209310887U (en) | 2019-02-19 | 2019-02-19 | A kind of inversed current transformer oil level monitoring arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920209739.1U CN209310887U (en) | 2019-02-19 | 2019-02-19 | A kind of inversed current transformer oil level monitoring arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209310887U true CN209310887U (en) | 2019-08-27 |
Family
ID=67681728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920209739.1U Expired - Fee Related CN209310887U (en) | 2019-02-19 | 2019-02-19 | A kind of inversed current transformer oil level monitoring arrangement |
Country Status (1)
| Country | Link |
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| CN (1) | CN209310887U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109668605A (en) * | 2019-02-19 | 2019-04-23 | 南昌科晨电力试验研究有限公司 | A kind of inversed current transformer oil level monitoring arrangement and method |
-
2019
- 2019-02-19 CN CN201920209739.1U patent/CN209310887U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109668605A (en) * | 2019-02-19 | 2019-04-23 | 南昌科晨电力试验研究有限公司 | A kind of inversed current transformer oil level monitoring arrangement and method |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190827 Termination date: 20220219 |
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| CF01 | Termination of patent right due to non-payment of annual fee |