CN202309032U - Intelligent protection device of transformer - Google Patents
Intelligent protection device of transformer Download PDFInfo
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- CN202309032U CN202309032U CN201120396610XU CN201120396610U CN202309032U CN 202309032 U CN202309032 U CN 202309032U CN 201120396610X U CN201120396610X U CN 201120396610XU CN 201120396610 U CN201120396610 U CN 201120396610U CN 202309032 U CN202309032 U CN 202309032U
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Abstract
The utility model discloses an intelligent protection device of a transformer. The intelligent protection device comprises a central processing unit, an analog input module, a switch input module and a switch output module, wherein the switch input module is used for receiving a non-electrical quantity signal output by the transformer; the analog input module is used for receiving an electrical quantity signal output by the transformer; the non-electrical quantity signal or/and the electrical quantity signal enters/enter the central processing unit; after the non-electrical quantity signal or/and the electrical quantity signal is/are calculated and analyzed by the central processing unit, an exit command signal is transmitted to the switch output module according to the calculated and analyzed signal; the switch output module is used for executing tripping exit action according to the exit command signal; the switch input module comprises an optical coupler isolator; and the non-electrical quantity signal enters the central processing unit through the optical coupler isolator. The intelligent protection device of the transformer, provided by the embodiment of the utility model, has superior anti-interference capacity.
Description
Technical field
The utility model relates to a kind of protective device, is specifically related to a kind of intelligent transformer protective device.
Background technology
Protection equipment for transformer comprises transformer electric quantity protective device and transformer non electrical quantity protective device; Transformer non electrical quantity protective device is the device that a kind of non-electric charge quantity signalling to oily formula transformer of in electric power system, using carries out error protection, and non-electric charge quantity signalling comprises gas, temperature, pressure, speed etc.The protection of transformer non electrical quantity; Be meant by the fault actions of transformer non electrical quantity reflection or the protection of posting a letter; Like protection (adjusting), temperature protection (through the temperature height), anti-riot protection (through the pressure size), overspeed protection (speed setting) etc. through oily speed; Transformer electric quantity protective device is meant and receives the device that electric quantity signal carries out trip protection that electric quantity signal comprises voltage, electric current etc.
At present, the protection equipment for transformer implementation is varied, has the relay of employing mode to realize; Also there is the cpu mode of employing to realize; It is heavily moving to adopt the relay mode to realize exactly through relay non electrical quantity or electric quantity signal being carried out signal, posts a letter indication and conducting or break off controlled output circuit.Adopting cpu mode to realize is exactly conducting or the disconnection through the CPU control switch.
The utility model people of the utility model finds, protection equipment for transformer less stable of the prior art, and antijamming capability is not strong, and causes malfunction easily.
The utility model content
The utility model embodiment provides a kind of intelligent transformer protective device, has good antijamming capability.
The technical scheme that the utility model provides is following:
A kind of intelligent transformer protective device comprises: central processing unit, analog quantity input module; Switching input module and switching value output module; The non-electric charge quantity signalling of said switching input module receiving transformer output, the electric quantity signal of said analog quantity input module receiving transformer output, said non-electric charge quantity signalling is or/and electric quantity signal gets into said central processing unit; Said central processing unit to said non-electric charge quantity signalling or/and after electric quantity signal carries out computational analysis; According to the signal after the computational analysis, send the outlet command signal and give said switching value output module, said switching value output module is carried out tripping operation outlet action according to said outlet command signal;
Said switching input module comprises optical coupling isolator, and said non-electric charge quantity signalling gets into said central processing unit through said optical coupling isolator.
Preferably; Said switching input module also comprises first resistance, first electric capacity, first diode; Second diode and second resistance; One end of said first resistance links to each other with the negative pole of an end of first electric capacity and first diode, and the negative pole of said second diode is connected with the positive pole of said first diode, and the positive pole of said second diode is connected with the other end of said first electric capacity; Said second diode is parallelly connected with said second resistance, and the two ends of said second resistance link to each other with the positive-negative input end of optical coupling isolator respectively.
Preferably, said analog quantity input module comprises filter and analog to digital converter, and said electric quantity signal gets into said analog to digital converter again and carries out analog-to-digital conversion through behind the said filter filtering, and the electric quantity signal after the said analog-to-digital conversion gets into said central processing unit.
Preferably, said switching value output module comprises Darlington chip and relay, and said Darlington chip is controlled said relay on-off after receiving said outlet command signal.
Preferably, said device also comprises memory module, communication module and human-computer interaction module, and said memory module, communication module is connected with said central processing unit respectively with human-computer interaction module.
Preferably, said human-computer interaction module comprises keyboard, indicator light and LCD.
The utility model provides a kind of intelligent transformer protective device, comprising: central processing unit, analog quantity input module; Switching input module and switching value output module; The non-electric charge quantity signalling of said switching input module receiving transformer output, the electric quantity signal of said analog quantity input module receiving transformer output, said non-electric charge quantity signalling is or/and electric quantity signal gets into said central processing unit; Said central processing unit to said non-electric charge quantity signalling or/and after electric quantity signal carries out computational analysis; According to the signal after the computational analysis, send the outlet command signal and give said switching value output module, said switching value output module is carried out tripping operation outlet action according to said outlet command signal; Said switching input module comprises optical coupling isolator, and said non-electric charge quantity signalling gets into said central processing unit through said optical coupling isolator.The intelligent transformer protective device that the utility model embodiment provides has good antijamming capability.
Description of drawings
Fig. 1 is intelligent transformer protective device module one sketch map that the utility model embodiment provides;
Fig. 2 is the switching input module operation principle embodiment sketch map that the utility model embodiment provides;
Fig. 3 is the analog quantity input module sketch map that the utility model embodiment provides;
Fig. 4 is the filter schematic diagram that the utility model embodiment provides;
Fig. 5 is the analog to digital converter schematic diagram that the utility model embodiment provides;
Fig. 6 is the Darlington chip schematic diagram that the utility model embodiment provides;
Fig. 7 is the relay schematic diagram that the utility model embodiment provides;
Fig. 8 is another sketch map of intelligent transformer protective device module that the utility model embodiment provides.
Embodiment
To combine the accompanying drawing among the utility model embodiment below, the technical scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
The intelligent transformer protective device that consulting Fig. 1 the utility model embodiment provides comprises central processing unit 300; Analog quantity input module 100; Switching input module 200 and switching value output module 400; The non-electric charge quantity signalling of switching input module 200 receiving transformers output, the electric quantity signal of analog quantity input module 100 receiving transformers output, said non-electric charge quantity signalling is or/and electric quantity signal gets into central processing unit 300; 300 pairs of non-electric charge quantity signallings of central processing unit are or/and after electric quantity signal carries out computational analysis; According to the signal after the computational analysis, send the outlet command signal and give switching value output module 400, switching value output module 400 is carried out tripping operation outlet action according to the outlet command signal; Switching input module 400 comprises optical coupling isolator, and said non-electric charge quantity signalling gets into central processing unit 300 through optical coupling isolator.
The non-electric charge quantity signalling input of being mentioned in the utility model is meant that each outside non-electric charge quantity signalling is input in each branch road of switching input module 200, and each branch road can be divided into because of the difference of non-electric charge quantity signalling: heavy gas input, pressure discharge input, overtemperature tripping operation input, air-cooled tripping operation input, subsequent use tripping operation 1 input, light gas input, the too high input of temperature, air-cooled disappearance input, subsequent use input.
The utility model provides a kind of intelligent transformer protective device, comprising: central processing unit, analog quantity input module; Switching input module and switching value output module; The non-electric charge quantity signalling of said switching input module receiving transformer output, the electric quantity signal of said analog quantity input module receiving transformer output, said non-electric charge quantity signalling is or/and electric quantity signal gets into said central processing unit; Said central processing unit to said non-electric charge quantity signalling or/and after electric quantity signal carries out computational analysis; According to the signal after the computational analysis, send the outlet command signal and give said switching value output module, said switching value output module is carried out tripping operation outlet action according to said outlet command signal; Said switching input module comprises optical coupling isolator, and said non-electric charge quantity signalling gets into said central processing unit through said optical coupling isolator.The intelligent transformer protective device that the utility model embodiment provides has good antijamming capability.
Consult Fig. 2; The switching input module 200 of the intelligent transformer protective device among the utility model embodiment comprises the first resistance R 13A, the first capacitor C R13, the first diode ZK13; The second diode DK13 and the second resistance R 13B; The end of the first resistance R 13A links to each other with the end of the first capacitor C R13 and the negative pole of the first diode ZK13, and the negative pole of the second diode DK13 is connected with the positive pole of the first diode ZK13, and the positive pole of the second diode DK13 is connected with the other end of the first capacitor C R13; The second diode DK13 is parallelly connected with the second resistance R 13B, and the two ends of the second resistance R 13B link to each other with the positive-negative input end of optical coupling isolator respectively.
Consult Fig. 3; The analog quantity input module 100 of the intelligent transformer protective device among the utility model embodiment comprises filter 1001 and analog to digital converter 1002; Electric quantity signal is after wave filter 1001 filtering; Get into analog to digital converter 1002 again and carry out analog-to-digital conversion, electric quantity signal after the analog-to-digital conversion gets into central processing unit 300, about the filtering of filter 1001 and analog to digital converter 1002 with analog-digital conversion process can consult Fig. 4 and Fig. 5 understands.
The switching value output module 400 of the intelligent transformer protective device among the utility model embodiment comprises Darlington chip and relay, and the Darlington chip is controlled said relay on-off after receiving said outlet command signal.Fig. 6 is a Darlington chip schematic diagram, and Fig. 7 is the relay schematic diagram.
Switching value output module 400 can comprise multichannel tripping operation outlet, and the tripping operation outlet of every road can be provided with the time-delay definite value.
Consult Fig. 8; Another embodiment of the utility model protective device also comprises memory module 500, communication module 600, human-computer interaction module 700 and power module 800 on the basis of a last embodiment; Memory module 500 provides memory space, is convenient to program debugging and operation, and communication module is that CPU provides two-way RS-485 communicating circuit; Every road circuit all passes through high speed photo coupling isolation, the protection of TVS surge and the current-limiting protection of people's resistance, guarantees the reliable and stable of communication.Human-computer interaction module 700 comprises keyboard, indicator light and LCD, and the user can be through human-computer interaction module adjustment parameter, and power module 800 provides electric weight for other modules.
The protective device that the utility model embodiment provides has good antijamming capability.
More than intelligent transformer protective device that the utility model embodiment is provided carried out detailed introduction, the explanation of above embodiment just is used to help to understand the core concept of the utility model; Simultaneously, for one of ordinary skill in the art, according to the thought of the utility model, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as the restriction to the utility model.
Claims (6)
1. intelligent transformer protective device; It is characterized in that, comprising: central processing unit, analog quantity input module; Switching input module and switching value output module; The non-electric charge quantity signalling of said switching input module receiving transformer output, the electric quantity signal of said analog quantity input module receiving transformer output, said non-electric charge quantity signalling is or/and electric quantity signal gets into said central processing unit; Said central processing unit to said non-electric charge quantity signalling or/and after electric quantity signal carries out computational analysis; According to the signal after the computational analysis, send the outlet command signal and give said switching value output module, said switching value output module is carried out tripping operation outlet action according to said outlet command signal;
Said switching input module comprises optical coupling isolator, and said non-electric charge quantity signalling gets into said central processing unit through said optical coupling isolator.
2. intelligent transformer protective device according to claim 1 is characterized in that said switching input module also comprises first resistance; First electric capacity; First diode, second diode and second resistance, an end of said first resistance links to each other with the negative pole of an end of first electric capacity and first diode; The negative pole of said second diode is connected with the positive pole of said first diode; The positive pole of said second diode is connected with the other end of said first electric capacity, and said second diode is parallelly connected with said second resistance, and the two ends of said second resistance link to each other with the positive-negative input end of optical coupling isolator respectively.
3. intelligent transformer protective device according to claim 1; It is characterized in that; Said analog quantity input module comprises filter and analog to digital converter; Said electric quantity signal gets into said analog to digital converter again and carries out analog-to-digital conversion through behind the said filter filtering, and the electric quantity signal after the said analog-to-digital conversion gets into said central processing unit.
4. intelligent transformer protective device according to claim 1 is characterized in that, said switching value output module comprises Darlington chip and relay, and said Darlington chip is controlled said relay on-off after receiving said outlet command signal.
5. intelligent transformer protective device according to claim 1 is characterized in that said device also comprises memory module; Communication module; Human-computer interaction module and power module, said memory module, communication module is connected with said central processing unit respectively with human-computer interaction module.
6. intelligent transformer protective device according to claim 5 is characterized in that said human-computer interaction module comprises keyboard, indicator light and LCD.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120396610XU CN202309032U (en) | 2011-10-17 | 2011-10-17 | Intelligent protection device of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120396610XU CN202309032U (en) | 2011-10-17 | 2011-10-17 | Intelligent protection device of transformer |
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| Publication Number | Publication Date |
|---|---|
| CN202309032U true CN202309032U (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201120396610XU Expired - Fee Related CN202309032U (en) | 2011-10-17 | 2011-10-17 | Intelligent protection device of transformer |
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| CN (1) | CN202309032U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878917A (en) * | 2012-09-17 | 2013-01-16 | 华中科技大学 | Signal operation device based on Rogowski coil measurement |
| CN104467812A (en) * | 2014-12-08 | 2015-03-25 | 重庆跃达电力设备有限公司 | Sampling reference frequency conversion circuit applied to power circuit monitoring device |
| CN104459403A (en) * | 2014-12-08 | 2015-03-25 | 重庆跃达电力有限公司 | Switching value power source circuit applied to electric power circuit monitoring device |
| CN104460455A (en) * | 2014-12-08 | 2015-03-25 | 重庆跃达电力设备有限公司 | Electric power line monitoring sampling reference frequency conversion circuit with power circuit |
| CN109861216A (en) * | 2019-03-04 | 2019-06-07 | 苏州热工研究院有限公司 | The method and system that more connecting transformers are safely operated side by side under interconnected network |
-
2011
- 2011-10-17 CN CN201120396610XU patent/CN202309032U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878917A (en) * | 2012-09-17 | 2013-01-16 | 华中科技大学 | Signal operation device based on Rogowski coil measurement |
| CN102878917B (en) * | 2012-09-17 | 2014-11-12 | 华中科技大学 | Signal operation device based on Rogowski coil measurement |
| CN104467812A (en) * | 2014-12-08 | 2015-03-25 | 重庆跃达电力设备有限公司 | Sampling reference frequency conversion circuit applied to power circuit monitoring device |
| CN104459403A (en) * | 2014-12-08 | 2015-03-25 | 重庆跃达电力有限公司 | Switching value power source circuit applied to electric power circuit monitoring device |
| CN104460455A (en) * | 2014-12-08 | 2015-03-25 | 重庆跃达电力设备有限公司 | Electric power line monitoring sampling reference frequency conversion circuit with power circuit |
| CN104459403B (en) * | 2014-12-08 | 2017-05-17 | 重庆跃达电力设备有限公司 | Switching value power source circuit applied to electric power circuit monitoring device |
| CN104467812B (en) * | 2014-12-08 | 2017-06-30 | 重庆跃达电力设备有限公司 | A kind of sample reference frequency-conversion circuit for power monitoring circuit device |
| CN109861216A (en) * | 2019-03-04 | 2019-06-07 | 苏州热工研究院有限公司 | The method and system that more connecting transformers are safely operated side by side under interconnected network |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20201017 |
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| CF01 | Termination of patent right due to non-payment of annual fee |