CN2861996Y - Dry-type transformer monitoring control instrument - Google Patents
Dry-type transformer monitoring control instrument Download PDFInfo
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- CN2861996Y CN2861996Y CN 200520088723 CN200520088723U CN2861996Y CN 2861996 Y CN2861996 Y CN 2861996Y CN 200520088723 CN200520088723 CN 200520088723 CN 200520088723 U CN200520088723 U CN 200520088723U CN 2861996 Y CN2861996 Y CN 2861996Y
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- transformer
- dry
- type transformer
- circuit
- electrification
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Abstract
The utility model relates to a dry-type transformer monitoring instrument arranged on transformer, with transformer temperature detection unit and high-voltage live monitoring unit arranged inside. The monitoring instrument can directly displayed if the high-voltage side of the transformer is live and display the temperature of each phase of the transformer, combining a plurality of functions the as temperature display, live display, control, remote output, and transformer shell gate forced lock. By applying the monitoring instrument, the disadvantages as inconvenience in observation, wiring in disorder, and high possibility of electric shock brought about by scattered mounting of monitoring devices are avoided, preventing any mis-operation and mis-entry into live space. The monitoring instrument has the advantages of complete functions, high precision in measurement, long service life, convenience, small overall dimensions, easy operation, and convenient wiring; convenient for electrical staff to conduct routine check and maintenance on transformer; can provide safety guarantee and effectively improve the safety and reliability of dry-type transformer operation.
Description
Technical field:
The utility model relates to a kind of dry-type transformer monitor, is used for dry-type transformer is realized that temperature control and electrification in high voltage show.
Background technology:
At present, 6.3～35KV dry-type transformer is in use installed system for detecting temperature in China's power industry power transmission and transformation system, to measure the transformer temperature signal, reaches the purpose of protection transformer.By guard shield or fence are installed, to prevent personnel's mistakenly entering charged chamber, as safety prevention measure.In high voltage control high voltage display device is installed cashier's office in a shop, is shown whether this switch board high tension loop has electricity, the then not instrument demonstration intuitively in the transformer room, whether the transformer high-voltage loop switches on can only be indicated according to the indoor instrument of high voltage control.According to the actual operating position of China's transformer and distribution power station, transformer room and the position, high voltage control chamber that considerable industrial and mining enterprise unit moves arranged and be not together, even wide apart, whether the transformer high-voltage loop has then not instrument demonstration intuitively of electricity in this case, can only be merely according to the sound of dry-type transformer, low voltage control voltage table cashier's office in a shop judges whether this transformer has, because considerable transformer is not installed guard shield or fence, though shell perhaps has been installed, still might open by mistake the shell door, the staff is checking circuit in this state, there is a strong possibility during record transformer temperature is strayed into the transformer high-voltage district, therefore exists sizable potential safety hazard.
Summary of the invention:
The purpose of this utility model provides a kind of dry-type transformer monitor, and device can realize at the scene that the demonstration of transformer temperature, overtemperture control and electrification in high voltage show on dry-type transformer, be convenient to staff's prosecution transformer ruuning situation, and is convenient directly perceived.
The purpose of this utility model realizes as follows: this dry-type transformer monitor device on transformer, built-in transformer temperature detecting unit, and built-in transformer high-voltage live monitoring unit.
Temperature detecting unit constitutes by being embedded in platinum resistance thermometer sensor, sensor in the dry-type transformer winding, electronic switch, filter amplification circuit, analog to digital converter, single-chip microcomputer, warning indicating circuit, measurement display part, keyswitch and overtemperature output control circuit, the output of sensor is connected to electronic switch, insert single-chip microcomputer through filter amplification circuit, analog to digital conversion circuit, warning indicating circuit, measurement display part, keyswitch are connected with single-chip microcomputer respectively with the overtemperature output control circuit.Detect winding temperature by the sensor acquisition that is embedded in the dry-type transformer winding, sensor can be selected Pt100 platinum resistance thermometer sensor, sensor, variation of temperature causes the variation of its resistance value, convert resistance value to voltage signal, input single-chip microcomputer after electronic switch, filtering amplification, A/D conversion shows its phase sequence and temperature value by panel on the one hand; By logical calculated, when reaching setting value, temperature exports control signal corresponding on the other hand, blower fan start and stop, overtemperature alarm and the overtemperature tripping operation etc. of instruction transformer configuration.
The electrification in high voltage monitoring means is made of the high pressure sensor and the electrification in high voltage pilot lamp that are fixed on the transformer high-voltage side upper clamping piece, and the output terminal of high pressure sensor connects electrification in high voltage pilot lamp, electrification in high voltage pilot lamp other end ground connection by resistance.By sensor dividing potential drop electric capacity plug, obtain the control signal of certain voltage signal as display power supply and locking from the transformer high-voltage loop, reflection dry-type transformer high-pressure side charged state is indicated each phase high tension loop charged state of transformer respectively by pilot lamp.
The electrification in high voltage monitoring means has the locking circuit that is connected with No. three high pressure sensors, and the control signal of locking circuit is electrically connected with electromagnetic lock on the transformer case door.As long as high tension loop has one electricity is arranged mutually, electronic circuit pilot relay output contact is opened, and is in the forced blocking state, and the electromagnetic lock on the transformer case door can not be opened, and avoids the staff to be strayed into the transformer high-voltage district, plays the safeguard protection effect.
This monitor can demonstrate directly whether the transformer high-voltage side switches on and each phase temperature value of transformer, integrate functions such as temperature demonstration, charged demonstration, control, long-range output, the forced blocking of transformer case net door, remedied because monitoring instrument is installed and disperseed the observation inconvenience, the wiring that cause in disorder and the shortcoming of electric shock accidents easily takes place.Reach and prevent maloperation, mistakenly entering charged chamber, thus reach anti-error purpose.Have advantages such as complete function, measuring accuracy height, long service life, overall volume are little, simple to operate, easy-to-connect.Make things convenient for electric personnel's current check to safeguard transformer and safety guarantee is provided, can effectively improve security, the reliability of dry-type transformer operation.
Description of drawings:
Fig. 1 is the elementary diagram of the utility model dry-type transformer monitor.
Fig. 2 is the installation site synoptic diagram of the utility model dry-type transformer monitor.
Fig. 3 is a temperature detecting unit electrical schematic diagram in the dry-type transformer monitor.
Fig. 4 is the charged detecting unit electrical schematic diagram of dry-type transformer monitor mesohigh.
Embodiment:
With reference to Fig. 1, this transformer control instrument 1 is made up of temperature monitoring unit and electrification in high voltage monitoring means two parts, supporting use, agent set is equipped with microswitch 10, display screen 9, pilot lamp 11, pilot lamp 12, high pressure demonstration uni-directional push-button switch 8, electrification in high voltage pilot lamp 7 on this cabinet panel in same casing.Microswitch 10 from left to right K1, K2, K3, K4 is followed successively by setting, maximum, manual, record, is temperature control keyswitch; Display screen 9 is used to show each phase sequence of transformer and Temperature numerical; Pilot lamp 11 is this dry type transformer control instrument control corresponding state pilot lamp, is followed successively by maximum, manual from top to bottom, blower fan; Pilot lamp 12 is this dry type transformer control instrument control corresponding state pilot lamp, is followed successively by fault, overtemperature, tripping operation from top to bottom; High pressure shows that 7 of charged pilot lamp flashed indication when uni-directional push-button switch 8 was pressed, and when upspringing, 7 of charged pilot lamp extinguish; 7 of electrification in high voltage pilot lamp are respectively the charged pilot lamp of three-phase high-voltage, select neon tube or high brightness LED for use, be expressed as A, B, C respectively, control wiring 14 comprises power input line, the external trouble light of output contact, warning alarm bell, breaking coil, cooling blower output control line; Electromagnetic lock forced blocking control line etc.There is cooling blower 13 dry-type transformer 2 lower ends, be linked in the transformer control instrument 1 at dry-type transformer low pressure winding 6 installation Pt100 platinum resistance thermometer sensor, sensor acquisition detection winding temperatures and by line 4, on dry-type transformer 2 high-pressure side upper clamping pieces, adorn high pressure sensor 5, and signal is connected in the transformer control instrument 1 through line 3.See Fig. 2, show transformer control instrument 1, high pressure sensor 5 and the installation site of temperature sensor on dry-type transformer 2.
With reference to Fig. 3, temperature detecting unit is by being embedded in platinum resistance thermometer sensor, sensor in the dry-type transformer winding, electronic switch, filter amplification circuit, analog to digital converter (A/D), single-chip microcomputer, the warning indicating circuit, measure display part 9, keyswitch 10 and overtemperature output control circuit constitute, the output of sensor is connected to electronic switch, pass through filter amplification circuit then, analog to digital conversion circuit inserts single-chip microcomputer, warning indicating circuit 12, display part 9, keyswitch 10 is connected with single-chip microcomputer 8031 respectively with the overtemperature output control circuit, and this single-chip microcomputer application circuit is a mature technology.
With reference to Fig. 4, the electrification in high voltage monitoring means is made of the high pressure sensor 5 and the electrification in high voltage pilot lamp HD that are fixed on the transformer high-voltage side upper clamping piece, the output terminal of high pressure sensor 5 connects electrification in high voltage pilot lamp HD by resistance R, electrification in high voltage pilot lamp HD other end ground connection, be connected to filter capacitor C2 between the output terminal of every road high pressure sensor 5 and the ground, the locking circuit that is connected with No. three high pressure sensors in addition, the control signal of locking circuit is electrically connected with electromagnetic lock on the transformer case door, and the locking circuit is mainly to constitute with the relay J.
The performance of this transformer control instrument: (1) reinforced Anti-interference Design, adopt software and hardware filtering to combine, power supply transient, common mode, string mould and spatial interference there are extremely strong inhibition ability; (2) selecting 8031 family's single-chip microcomputers of powerful built-in whatchdog and technology maturation for use is central processing unit, is furnished with E
2The PROM chip, storage of measurement data can be carried out power down protection to all setup parameters and measurement data at any time; (3) perfect detection defencive function: a. monitor can be judged short circuit sensor or open fault automatically, sound and light alarm in the machine, and malfunction indicator lamp is bright, fault output contact closure; B. arbitrary phase winding temperature reaches then dry-type transformer fan starting of fan starting desired temperature, and the blower fan pilot lamp is bright, reduces to the design temperature blower fan when temperature and stops automatically, and the blower fan pilot lamp goes out; C. arbitrary phase winding temperature reaches the overtemperature desired temperature, and then thermal light is bright, and the closed also teletransmission of overtemperature output contact starts acoustooptic alarm system for switch board; D. arbitrary phase winding temperature reaches the trip temperature setting value, and then thermal light is bright, and tripping operation output contact closure starts trip circuit; (4) monitor is interior without potentiometer adjustment temperature accuracy, adopts I
2The C bus is adjusted and memory technology, avoids because of using problems such as temperature drift that potentiometer produces and loose contact, but long-time running; (5) voltage indication and forced blocking are controlled by same signal all, but Circuits System is separate, as long as the transformer high-voltage side is charged, breaks down simultaneously even show with exclusive circuit, the electromagnetic lock that is installed on the transformer case door still is in blocking, anti-error function admirable.In addition, adopt the luminotron of long-life, superbright degree to make mutually charged pilot lamp.
Claims (4)
1, a kind of dry-type transformer monitor, device is on transformer, and built-in transformer temperature detecting unit is characterized in that: the also built-in transformer high-voltage live monitoring of this monitor unit.
2, dry-type transformer monitor according to claim 1, it is characterized in that: temperature detecting unit is by being embedded in platinum resistance thermometer sensor, sensor in the dry-type transformer winding, electronic switch, filter amplification circuit, analog to digital converter (A/D), single-chip microcomputer, warning indicating circuit (12), measure display part (9), keyswitch (10) and overtemperature output control circuit constitute, the output of sensor is connected to electronic switch, through filter amplification circuit, analog to digital conversion circuit inserts single-chip microcomputer, warning indicating circuit (12), measure display part (9), keyswitch (10) is connected with single-chip microcomputer respectively with the overtemperature output control circuit.
3, dry-type transformer monitor according to claim 1, it is characterized in that: the electrification in high voltage monitoring means is made of the high pressure sensor (5) and the electrification in high voltage pilot lamp (HD) that are fixed on the transformer high-voltage side upper clamping piece, the output terminal of high pressure sensor (5) connects electrification in high voltage pilot lamp (HD), electrification in high voltage pilot lamp (HD) other end ground connection by resistance (R).
4, dry-type transformer monitor according to claim 3 is characterized in that: the electrification in high voltage monitoring means has the locking circuit that is connected with the three-phase high-voltage sensor, and the control signal of locking circuit is electrically connected with electromagnetic lock on the transformer case door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520088723 CN2861996Y (en) | 2005-11-02 | 2005-11-02 | Dry-type transformer monitoring control instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520088723 CN2861996Y (en) | 2005-11-02 | 2005-11-02 | Dry-type transformer monitoring control instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2861996Y true CN2861996Y (en) | 2007-01-24 |
Family
ID=37659628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520088723 Expired - Fee Related CN2861996Y (en) | 2005-11-02 | 2005-11-02 | Dry-type transformer monitoring control instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2861996Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102354234A (en) * | 2011-07-28 | 2012-02-15 | 苏州鼎能电力设备有限公司 | Intelligent temperature control instrument of dry type transformer |
| CN103354150A (en) * | 2013-08-01 | 2013-10-16 | 南通市海王电气有限公司 | Novel dry-type transformer |
| CN106444896A (en) * | 2016-10-16 | 2017-02-22 | 陈畅 | Intelligent temperature controller of dry type transformer |
| CN106971832A (en) * | 2017-05-26 | 2017-07-21 | 梁溪区旭中通用机械设计工作室 | A kind of power transformer of automation |
| CN109062284A (en) * | 2018-09-12 | 2018-12-21 | 合肥多元节电科技有限公司 | A kind of novel dry change temperature controller |
| CN109273299A (en) * | 2018-11-07 | 2019-01-25 | 开滦能源化工股份有限公司范各庄矿业分公司 | It prevents from being strayed into high voltage electric equipment electrification interval alarms monitoring for protection device |
| CN109445491A (en) * | 2018-12-21 | 2019-03-08 | 益和电气集团股份有限公司 | Intelligent transformer temperature controller and its working method |
| CN114999792A (en) * | 2022-07-22 | 2022-09-02 | 广东鹏鑫电气科技有限公司 | SCB14 type dry-type power transformer with high safety |
-
2005
- 2005-11-02 CN CN 200520088723 patent/CN2861996Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102354234A (en) * | 2011-07-28 | 2012-02-15 | 苏州鼎能电力设备有限公司 | Intelligent temperature control instrument of dry type transformer |
| CN103354150A (en) * | 2013-08-01 | 2013-10-16 | 南通市海王电气有限公司 | Novel dry-type transformer |
| CN106444896A (en) * | 2016-10-16 | 2017-02-22 | 陈畅 | Intelligent temperature controller of dry type transformer |
| CN106971832A (en) * | 2017-05-26 | 2017-07-21 | 梁溪区旭中通用机械设计工作室 | A kind of power transformer of automation |
| CN109062284A (en) * | 2018-09-12 | 2018-12-21 | 合肥多元节电科技有限公司 | A kind of novel dry change temperature controller |
| CN109273299A (en) * | 2018-11-07 | 2019-01-25 | 开滦能源化工股份有限公司范各庄矿业分公司 | It prevents from being strayed into high voltage electric equipment electrification interval alarms monitoring for protection device |
| CN109445491A (en) * | 2018-12-21 | 2019-03-08 | 益和电气集团股份有限公司 | Intelligent transformer temperature controller and its working method |
| CN114999792A (en) * | 2022-07-22 | 2022-09-02 | 广东鹏鑫电气科技有限公司 | SCB14 type dry-type power transformer with high safety |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |