CN105207365A - Intelligent monitoring terminal device of dry-type transformer - Google Patents
Intelligent monitoring terminal device of dry-type transformer Download PDFInfo
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- CN105207365A CN105207365A CN201510684718.1A CN201510684718A CN105207365A CN 105207365 A CN105207365 A CN 105207365A CN 201510684718 A CN201510684718 A CN 201510684718A CN 105207365 A CN105207365 A CN 105207365A
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Abstract
The invention discloses an intelligent monitoring terminal device of a dry-type transformer. The intelligent monitoring terminal device adopts the structure that the output ends of an A-phase voltage transformer, a B-phase voltage transformer, a C-phase voltage transformer, an A-phase current transformer, a B-phase current transformer and a C-phase current transformer are connected with corresponding interfaces at the input end of a power quality measurement circuit; the output end of an A-phase temperature sensor is connected with the input end of an A-phase temperature sensor conditioning circuit; the output end of a B-phase temperature sensor is connected with the input end of a B-phase temperature sensor conditioning circuit; the output end of a C-phase temperature sensor is connected with the input end of a C-phase temperature sensor conditioning circuit; the output ends of the A-phase temperature sensor conditioning circuit, the B-phase temperature sensor conditioning circuit and the C-phase temperature sensor conditioning circuit are connected with A/D interfaces of a microprocessor circuit respectively. The intelligent monitoring terminal device has the advantages that on-line monitoring of the transformer can be realized, so as to promptly discover a fault state of the transformer and ensure safe running of the transformer.
Description
Technical field
The present invention relates to a kind of dry-type transformer intelligent monitoring terminal device.
Background technology
At present, power transformer is as one of primary equipment most important in electric power networks, and its safety, stable, reliable operation have very important significance to national product and life.Traditional transformer safeguards the method adopting regular interruption maintenance, and the method has very large limitation, mainly has following three shortcomings: one, the deficiency of outage supply of electric power; Two, non-turn(a)round, catastrophic failure was unpredictable; Three, fault-free periodic inspection causes a large amount of waste to manpower and materials.
Summary of the invention
Technical problem to be solved by this invention is the defect overcoming prior art, and provide a kind of dry-type transformer intelligent monitoring terminal device, it can to transformer real time on-line monitoring, the malfunction of Timeliness coverage transformer, ensures that transformer safety is run.
The present invention solves the problems of the technologies described above the technical scheme taked: a kind of dry-type transformer intelligent monitoring terminal device, it comprises A phase voltage instrument transformer, B phase voltage instrument transformer, C phase voltage instrument transformer, A phase current mutual inductor, B phase current mutual inductor, C phase current mutual inductor, quality of power supply measuring circuit, microcontroller circuit, A phase temperature sensor, B phase temperature sensor, C phase temperature sensor, A phase temperature sensor modulate circuit, B phase temperature sensor modulate circuit, C phase temperature sensor modulate circuit, key circuit, SD card memory circuit, display circuit, air-blower control relay circuit, overtemperature alarm output relay circuit, clock circuit, watchdog circuit, RS485 interface circuit, GPRS module, tripping alarm output relay circuit, buzzer circuit, relay indicating light circuit, power circuit and power work indicator light circuit, the output of A phase voltage instrument transformer, B phase voltage instrument transformer, C phase voltage instrument transformer, A phase current mutual inductor, B phase current mutual inductor, C phase current mutual inductor is connected with the input corresponding interface of quality of power supply measuring circuit respectively, the output of A phase temperature sensor is connected with the input of A phase temperature sensor modulate circuit, the output of B phase temperature sensor is connected with the input of B phase temperature sensor modulate circuit, the output of C phase temperature sensor is connected with the input of C phase temperature sensor modulate circuit, the output of A phase temperature sensor modulate circuit, B phase temperature sensor modulate circuit, C phase temperature sensor modulate circuit is connected with the A/D port of microcontroller circuit respectively, the input of air-blower control relay circuit, overtemperature alarm output relay circuit, tripping alarm output relay circuit, buzzer circuit, relay indicating light circuit is connected with the I/O port of microcontroller circuit respectively, the output of key circuit is connected with the I/O port of microcontroller circuit, the input of display circuit is connected with the I/O port of microcontroller circuit, the input of SD card memory circuit is connected with the corresponding ports of microcontroller circuit, the output of clock circuit is connected with the corresponding ports of microcontroller circuit, the output of watchdog circuit is connected with the corresponding ports of microcontroller circuit, one end of RS485 interface circuit is connected with the communication interface of microcontroller circuit, and the other end is connected with GPRS module, the output of power circuit is connected with the power end of microcontroller circuit and the input of power work indicator light circuit respectively.
Further, described quality of power supply measuring circuit is made up of IDT-90E36 integrated chip and peripheral circuit thereof.
Further, described SD card memory circuit adopts the SD card of 2GB to store.
Further, described clock circuit adopts DS1302 chip.
Further, described A phase temperature sensor and/or B phase temperature sensor and/or C phase temperature sensor adopt pt100 temperature sensor.
Further, the current transformer of described A phase current mutual inductor and/or B phase current mutual inductor and/or C phase current mutual inductor to be maximum input current be 5A.
Further, the current transformer of described quality of power supply measuring circuit also external 1000A/5A or 2000A/5A.
Further, in described air-blower control relay circuit, blower fan closing temperature is set as 90 DEG C, and blower fan open temp is set as 110 DEG C; And/or in overtemperature alarm output relay circuit, overtemperature alarm design temperature is 155 DEG C; And/or in tripping alarm output relay circuit, tripping operation design temperature is 170C.
After have employed technique scheme, the present invention has following beneficial effect:
(1) adopt high-accuracy voltage, current transformer and sampling with high precision circuit and be equipped with high-speed synchronous A/D converter, periodic sampling also obtains three-phase voltage, electric current instantaneous value by computing, simultaneously rated output factor; By temperature sensor real-time sampling winding temperature data;
(2) possess larger data memory space terminal can copy reading and store data; Historical data can preserve certain hour (being not less than a year), and the historical data deposit time interval is adjustable, adapts to user and different dry is become to the attention degree monitored;
(3) GPRS data communication modes is used, be aided with on-the-spot RS485 bus communication mode, timing reports and sends data message (voltage, electric current, power factor, active power, apparent power, winding temperature) etc., can send data to the monitoring platform website of specifying; The time interval that information sends can free setting, must send warning message in addition when there is voltage, electric current, temperature over-range;
(4) three-phase tour inspection the temperature shown in winding, input pull-down and fault self-checking show and export; Cooling blower automatic start-stop exports; Overtemperature alarm shows and exports; Overtemperature tripping operation shows and exports; Blower fan Non-follow control/automatically control two states display, output and mutually switch; Blower fan timing on off control function etc.; Temperature indicating range is 50-200 DEG C, thermostat should have can start that air cooling equipment opens (second to) respectively, air cooling equipment closes down (first to), overtemperature alarm (the 3rd to) and tripping operation (the 4th to) etc. four to above contact.Wherein overtemperature alarm and trip unit should be able to provide 2 pairs of normal opened contacts simultaneously, to meet the control needs reported to the police and trip in a distant place.Set point by blower fan close 90 DEG C, blower fan open 110 DEG C, overtemperature alarm 155 DEG C, tripping operation 170 DEG C, control contact to set arbitrarily in measuring range, to meet different insulative grade products and air cooling equipment under particular surroundings temperature occasion in advance or postpone the needs of switching.
Accompanying drawing explanation
Fig. 1 is the principle assumption diagram of dry-type transformer intelligent monitoring terminal device of the present invention.
Embodiment
In order to make content of the present invention more easily be clearly understood, below according to specific embodiment also by reference to the accompanying drawings, the present invention is further detailed explanation.
As shown in Figure 1, a kind of dry-type transformer intelligent monitoring terminal device, it comprises A phase voltage instrument transformer, B phase voltage instrument transformer, C phase voltage instrument transformer, A phase current mutual inductor, B phase current mutual inductor, C phase current mutual inductor, quality of power supply measuring circuit, microcontroller circuit, A phase temperature sensor, B phase temperature sensor, C phase temperature sensor, A phase temperature sensor modulate circuit, B phase temperature sensor modulate circuit, C phase temperature sensor modulate circuit, key circuit, SD card memory circuit, display circuit, air-blower control relay circuit, overtemperature alarm output relay circuit, clock circuit, watchdog circuit, RS485 interface circuit, GPRS module, tripping alarm output relay circuit, buzzer circuit, relay indicating light circuit, power circuit and power work indicator light circuit, the output of A phase voltage instrument transformer, B phase voltage instrument transformer, C phase voltage instrument transformer, A phase current mutual inductor, B phase current mutual inductor, C phase current mutual inductor is connected with the input corresponding interface of quality of power supply measuring circuit respectively, the output of A phase temperature sensor is connected with the input of A phase temperature sensor modulate circuit, the output of B phase temperature sensor is connected with the input of B phase temperature sensor modulate circuit, the output of C phase temperature sensor is connected with the input of C phase temperature sensor modulate circuit, the output of A phase temperature sensor modulate circuit, B phase temperature sensor modulate circuit, C phase temperature sensor modulate circuit is connected with the A/D port of microcontroller circuit respectively, the input of air-blower control relay circuit, overtemperature alarm output relay circuit, tripping alarm output relay circuit, buzzer circuit, relay indicating light circuit is connected with the I/O port of microcontroller circuit respectively, the output of key circuit is connected with the I/O port of microcontroller circuit, the input of display circuit is connected with the I/O port of microcontroller circuit, the input of SD card memory circuit is connected with the corresponding ports of microcontroller circuit, the output of clock circuit is connected with the corresponding ports of microcontroller circuit, the output of watchdog circuit is connected with the corresponding ports of microcontroller circuit, one end of RS485 interface circuit is connected with the communication interface of microcontroller circuit, and the other end is connected with GPRS module, the output of power circuit is connected with the power end of microcontroller circuit and the input of power work indicator light circuit respectively.
Described quality of power supply measuring circuit is made up of IDT-90E36 integrated chip and peripheral circuit thereof.
Described SD card memory circuit adopts the SD card of 2GB to store.
Described clock circuit adopts DS1302 chip.
Described A phase temperature sensor and/or B phase temperature sensor and/or C phase temperature sensor adopt pt100 temperature sensor.
The current transformer of described A phase current mutual inductor and/or B phase current mutual inductor and/or C phase current mutual inductor to be maximum input current be 5A.
In order to range extension, the current transformer of described quality of power supply measuring circuit also external 1000A/5A or 2000A/5A.
In described air-blower control relay circuit, blower fan closing temperature is set as 90 DEG C, and blower fan open temp is set as 110 DEG C; And/or in overtemperature alarm output relay circuit, overtemperature alarm design temperature is 155 DEG C; And/or in tripping alarm output relay circuit, tripping operation design temperature is 170 DEG C.Above-mentioned set point can be revised by key circuit.
This dry type intelligent transformer monitoring terminal set can measure A, B, C three-phase transformer winding temperature rise, A, B, C three-phase transformer voltage, A, B, C three-phase transformer electric current, A, B, C three-phase transformer power factor, A, B, C three-phase transformer active power simultaneously; A, B, C three-phase transformer reactive power; A, B, C three-phase transformer apparent power.
Above-described specific embodiment; technical problem, technical scheme and beneficial effect that the present invention solves are further described; be understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a dry-type transformer intelligent monitoring terminal device, it is characterized in that: it comprises A phase voltage instrument transformer, B phase voltage instrument transformer, C phase voltage instrument transformer, A phase current mutual inductor, B phase current mutual inductor, C phase current mutual inductor, quality of power supply measuring circuit, microcontroller circuit, A phase temperature sensor, B phase temperature sensor, C phase temperature sensor, A phase temperature sensor modulate circuit, B phase temperature sensor modulate circuit, C phase temperature sensor modulate circuit, key circuit, SD card memory circuit, display circuit, air-blower control relay circuit, overtemperature alarm output relay circuit, clock circuit, watchdog circuit, RS485 interface circuit, GPRS module, tripping alarm output relay circuit, buzzer circuit, relay indicating light circuit, power circuit and power work indicator light circuit, the output of A phase voltage instrument transformer, B phase voltage instrument transformer, C phase voltage instrument transformer, A phase current mutual inductor, B phase current mutual inductor, C phase current mutual inductor is connected with the input corresponding interface of quality of power supply measuring circuit respectively, the output of A phase temperature sensor is connected with the input of A phase temperature sensor modulate circuit, the output of B phase temperature sensor is connected with the input of B phase temperature sensor modulate circuit, the output of C phase temperature sensor is connected with the input of C phase temperature sensor modulate circuit, the output of A phase temperature sensor modulate circuit, B phase temperature sensor modulate circuit, C phase temperature sensor modulate circuit is connected with the A/D port of microcontroller circuit respectively, the input of air-blower control relay circuit, overtemperature alarm output relay circuit, tripping alarm output relay circuit, buzzer circuit, relay indicating light circuit is connected with the I/O port of microcontroller circuit respectively, the output of key circuit is connected with the I/O port of microcontroller circuit, the input of display circuit is connected with the I/O port of microcontroller circuit, the input of SD card memory circuit is connected with the corresponding ports of microcontroller circuit, the output of clock circuit is connected with the corresponding ports of microcontroller circuit, the output of watchdog circuit is connected with the corresponding ports of microcontroller circuit, one end of RS485 interface circuit is connected with the communication interface of microcontroller circuit, and the other end is connected with GPRS module, the output of power circuit is connected with the power end of microcontroller circuit and the input of power work indicator light circuit respectively.
2. dry-type transformer intelligent monitoring terminal device according to claim 1, is characterized in that: described quality of power supply measuring circuit is made up of IDT-90E36 integrated chip and peripheral circuit thereof.
3. dry-type transformer intelligent monitoring terminal device according to claim 1, is characterized in that: described SD card memory circuit adopts the SD card of 2GB to store.
4. dry-type transformer intelligent monitoring terminal device according to claim 1, is characterized in that: described clock circuit adopts DS1302 chip.
5. dry-type transformer intelligent monitoring terminal device according to claim 1, is characterized in that: described A phase temperature sensor and/or B phase temperature sensor and/or C phase temperature sensor adopt pt100 temperature sensor.。
6. dry-type transformer intelligent monitoring terminal device according to claim 1, is characterized in that: the current transformer of described A phase current mutual inductor and/or B phase current mutual inductor and/or C phase current mutual inductor to be maximum input current be 5A.
7. dry-type transformer intelligent monitoring terminal device according to claim 6, is characterized in that: the current transformer of described quality of power supply measuring circuit also external 1000A/5A or 2000A/5A.
8. dry-type transformer intelligent monitoring terminal device according to claim 1, is characterized in that: in described air-blower control relay circuit, blower fan closing temperature is set as 90 DEG C, and blower fan open temp is set as 110 DEG C; And/or in overtemperature alarm output relay circuit, overtemperature alarm design temperature is 155 DEG C; And/or in tripping alarm output relay circuit, tripping operation design temperature is 170 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510684718.1A CN105207365A (en) | 2015-10-22 | 2015-10-22 | Intelligent monitoring terminal device of dry-type transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510684718.1A CN105207365A (en) | 2015-10-22 | 2015-10-22 | Intelligent monitoring terminal device of dry-type transformer |
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| Publication Number | Publication Date |
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| CN105207365A true CN105207365A (en) | 2015-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201510684718.1A Pending CN105207365A (en) | 2015-10-22 | 2015-10-22 | Intelligent monitoring terminal device of dry-type transformer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107131604A (en) * | 2016-02-26 | 2017-09-05 | 常州常工电子科技股份有限公司 | Polynary perception air conditioner energy saving control terminal |
| CN111256860A (en) * | 2020-02-11 | 2020-06-09 | 雅砻江流域水电开发有限公司 | Reliable operation method of temperature control box of single-phase air-cooled transformer |
| WO2022100351A1 (en) * | 2020-11-11 | 2022-05-19 | 许继变压器有限公司 | Smart management system for dry-type transformer |
-
2015
- 2015-10-22 CN CN201510684718.1A patent/CN105207365A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107131604A (en) * | 2016-02-26 | 2017-09-05 | 常州常工电子科技股份有限公司 | Polynary perception air conditioner energy saving control terminal |
| CN111256860A (en) * | 2020-02-11 | 2020-06-09 | 雅砻江流域水电开发有限公司 | Reliable operation method of temperature control box of single-phase air-cooled transformer |
| WO2022100351A1 (en) * | 2020-11-11 | 2022-05-19 | 许继变压器有限公司 | Smart management system for dry-type transformer |
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Application publication date: 20151230 |