CN102565557A - Method and device for testing transformation ratio of dry type transformer - Google Patents
Method and device for testing transformation ratio of dry type transformer Download PDFInfo
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- CN102565557A CN102565557A CN2012100405579A CN201210040557A CN102565557A CN 102565557 A CN102565557 A CN 102565557A CN 2012100405579 A CN2012100405579 A CN 2012100405579A CN 201210040557 A CN201210040557 A CN 201210040557A CN 102565557 A CN102565557 A CN 102565557A
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- 238000009434 installation Methods 0.000 claims description 4
- 238000005070 sampling Methods 0.000 claims description 2
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Abstract
The invention discloses a method and a device for testing the transformation ratio of a dry type transformer, and belongs to the field of transformers. The method for testing the transformation ratio of the dry type transformer comprises the following steps of: encoding an encoder; arranging a transformation ratio testing instrument according to a voltage grade of a tested transformer; clamping power wires on a high-voltage side and a low-voltage side of the tested transformer respectively; connecting gear connecting wires with high-voltage coil shunting gears of a tested three-phase transformer respectively; turning on a power supply control switch; rotating a change-over switch to switch on a first loop so as to make an intermediate relay coil be powered; determining a key according to the transformation ratio testing instrument; starting to test an actual transformation ratio value of the transformer and error values of the actual transformation ratio value and a theoretical transformation ratio value by using the transformation ratio testing instrument; processing data by using the encoder and a decoder; and displaying and representing a gear of the transformer which is tested by the transformation ratio testing instrument at present by using a digital tube. By the method and the device, the defect of multiple kinds of inconvenience brought to testers in the conventional mode of testing the transformation ratio of the dry type transformer is overcome, and the requirement of preventing the data from being recorded incorrectly in the process of testing the transformation ratio of the transformer by the testers can be met; and the method and the device are safe and quick and are easy to operate.
Description
Technical field
Dry-type transformer no-load voltage ratio method of testing of the present invention and device belong to field transformer.
Background technology
At present, dry-type transformer is just than writing down tested transformer voltage ratio data in the measuring process, and the gear of tested transformer voltage ratio is tested in transposing again; The laboratory technician is busy to be returned between tested transformer and no-load voltage ratio tester device, is easy to occur the data recording mistake, consumes physical efficiency, loses time the inconvenience that traditional dry-type transformer no-load voltage ratio metering system brings to the laboratory technician.
Summary of the invention
The objective of the invention is to avoid weak point of the prior art, and provide a kind of and avoid the data recording mistake occurring, raise the efficiency, dry-type transformer no-load voltage ratio method of testing safe, quick, simple to operate.
The objective of the invention is to avoid weak point of the prior art, and provide a kind of and avoid the data recording mistake occurring, raise the efficiency, dry-type transformer no-load voltage ratio proving installation safe, quick, simple to operate.
The objective of the invention is to reach through following measure,
Dry-type transformer no-load voltage ratio method of testing of the present invention is following: encode to scrambler; Electric pressure according to tested transformer is provided with the no-load voltage ratio tester device; Respectively power lead is clipped in the high and low pressure side of tested transformer respectively, the gear connecting line couples together the power turn-on CS with tested three-phase transformer high-tension coil tap gear respectively; Rotary sampling switch is connected first loop; The auxiliary reclay coil gets electric, presses no-load voltage ratio tester device acknowledgement key, and the no-load voltage ratio tester device begins the error amount of actual no-load voltage ratio value and the actual no-load voltage ratio value and the theoretical no-load voltage ratio value of measuring transformer; Scrambler and code translator carry out data processing, and the current no-load voltage ratio tester device of charactron data representing is being tested the gear of transformer.
Dry-type transformer no-load voltage ratio proving installation of the present invention comprises power control switch, working power pilot lamp, switch, auxiliary reclay, industrial power, scrambler, code translator, charactron composition; Charactron connects code translator; Code translator connects scrambler; Scrambler connects the normally opened contact of auxiliary reclay respectively, and by the gear connecting line that the normally opened contact and the electric wire of auxiliary reclay constitutes, the gear connecting line is connected with tested three-phase transformer high-tension coil tap gear respectively; Industrial power connects switch, switch connects the gear connecting line, and the working power pilot lamp is connected on the power control switch.
At first encode to scrambler; Secondly the electric pressure according to tested transformer is provided with the no-load voltage ratio tester device; Respectively power lead is clipped in the high and low pressure side of tested transformer respectively; The gear connecting line that will be made up of the normally opened contact and the electric wire of auxiliary reclay couples together with tested three-phase transformer high-tension coil tap gear respectively; Power turn-on CS, working power pilot lamp are bright, the switch that turns clockwise, connect first loop, and it is electric that the coil wherein of auxiliary reclay is got, three normally opened contacts action becoming normally closed contacts.Press no-load voltage ratio tester device acknowledgement key, this moment, the no-load voltage ratio tester device began the error amount of actual no-load voltage ratio value and the actual no-load voltage ratio value and the theoretical no-load voltage ratio value of measuring transformer; Be connected on three normally opened contacts action becoming normally closed contacts in the loop of industrial power and scrambler, code translator simultaneously, constitute path.Scrambler and code translator carry out data processing, when charactron is shown as " 1 "; Represent that current no-load voltage ratio tester device testing first gear of transformer.Simultaneously since auxiliary reclay wherein three coils get electricly, make three normally closed contacts action becoming normally opened contacts that are connected on the 2nd, the 3rd, the 4th, the 5th gear; So just protect the loop of the 2nd, the 3rd, the 4th, the 5th gear misoperation can not occur, played the electrical interlocks protective effect.
The present invention overcomes the inconvenience that traditional dry-type transformer no-load voltage ratio metering system brings to the laboratory technician, can satisfy the laboratory technician and in transformer testing no-load voltage ratio process, avoid occurring data recording mistake, safe, quick, simple to operate.
Description of drawings
Accompanying drawing 1 is a principle schematic of the present invention.
Accompanying drawing 2 is gear connecting line synoptic diagram of the present invention.
Embodiment
are described in detail principle of work of the present invention below in conjunction with accompanying drawing.
Shown in accompanying drawing 1, accompanying drawing 2; Dry-type transformer no-load voltage ratio proving installation of the present invention comprise power control switch QF1, working power pilot lamp HR2, switch SA3, auxiliary reclay (KA11 ~ KA53) 4, industrial power T5, scrambler 6, code translator 7, charactron 8, by auxiliary reclay (gear connecting line (A1～A2, B1 ~ B2, C1 ~ C2 that the normally opened contact of KA11 ~ KA53) 4 and electric wire constitute; A2 ~ A3, B2 ~ B3, C2 ~ C3; A3 ~ A4, B3 ~ B4, C3 ~ C4; A4 ~ A5, B4 ~ B5, C4 ~ C5, composition such as A5 ~ A6, B5 ~ B6, C5 ~ C6) 9.Charactron connects code translator; Code translator connects scrambler; Scrambler connects the normally opened contact of auxiliary reclay respectively, and by the gear connecting line that the normally opened contact and the electric wire of auxiliary reclay constitutes, the gear connecting line is connected with tested three-phase transformer high-tension coil tap gear respectively; Industrial power connects switch, switch connects the gear connecting line, and the working power pilot lamp is connected on the power control switch.
Encode at first for scrambler 6; Secondly the electric pressure according to tested transformer is provided with the no-load voltage ratio tester device; Respectively its 6 power leads are clipped in the high and low pressure side of tested transformer respectively; Will be by auxiliary reclay (gear connecting line (A1～A2, B1 ~ B2, C1 ~ C2 that the normally opened contact of KA11 ~ KA53) 4 and electric wire constitute; A2 ~ A3, B2 ~ B3, C2 ~ C3, A3 ~ A4, B3 ~ B4, C3 ~ C4, A4 ~ A5, B4 ~ B5, C4 ~ C5; A5 ~ A6, B5 ~ B6, C5 ~ C6) 9 couple together with tested three-phase transformer high-tension coil tap gear respectively; Give loop power supply AC220V, power turn-on CS QF1, working power pilot lamp HR2 are bright, the switch SA3 that turns clockwise, it connects first loop, and (wherein (coil of KA11 ~ KA12 ~ KA13) gets electric its three normally opened contacts, and (A1 ~ A2, B1 ~ B2, C1 ~ C2) 9 moves and become normally closed contact KA11 ~ KA53) 4 to make auxiliary reclay.Press no-load voltage ratio tester device acknowledgement key, this moment, the no-load voltage ratio tester device began the error amount of actual no-load voltage ratio value and the actual no-load voltage ratio value and the theoretical no-load voltage ratio value of measuring transformer; Be connected on simultaneously in the loop of industrial power T5 and scrambler 6, code translator 7 that (three normally opened contacts action becoming normally closed contacts of KA11 ~ KA12 ~ KA13) make it constitute path.Scrambler 6 carries out data processing with code translator 7, when charactron 8 is shown as " 1 "; Represent that current no-load voltage ratio tester device testing first gear of transformer.Simultaneously because auxiliary reclay (KA11 ~ KA53) 4 wherein three (KA11 ~ KA12 ~ KA13) coil gets electric three normally closed contacts action becoming normally opened contacts that make it be connected on the 2nd, the 3rd, the 4th, the 5th gear; So just protect the loop of the 2nd, the 3rd, the 4th, the 5th gear misoperation can not occur and played the electrical interlocks protective effect.
When testing the 2nd gear: the switch SA3 that turns clockwise cuts off the 1st gear loop moment and also connects the 2nd gear loop and make auxiliary reclay ((coil of KA21 ~ KA22 ~ KA23) gets electric its three normally opened contacts, and (A2 ~ A3, B2 ~ B3, C2 ~ C3) action becomes normally closed contact for KA11 ~ KA53) 4 wherein three.Press no-load voltage ratio tester device acknowledgement key, this moment, the no-load voltage ratio tester device began the error amount of actual no-load voltage ratio value and the actual no-load voltage ratio value and the theoretical no-load voltage ratio value of measuring transformer; Simultaneously (three normally opened contacts action becoming normally closed contacts of KA21 ~ KA22 ~ KA23) make it constitute path in the loop of series connection industrial power 5, scrambler 6 and code translator 7; Scrambler 6 carries out data processing with code translator 7, when charactron 8 is shown as " 2 "; Represent that current no-load voltage ratio tester device testing second gear of transformer, ((KA21 ~ KA22 ~ KA23) coil gets and electricly makes its three normally closed contacts action becoming normally opened contacts that are connected on the 1st, the 3rd, the 4th, the 5th gear loop so just protect the 1st, the 3rd, the 4th, the 5th gear loop misoperation can not occur to have played the electrical interlocks effect for KA11 ~ KA53) 4 wherein three simultaneously because auxiliary reclay.
The method of operating and the electrical equipment principle of work of testing the 3rd, 4,5 gears are the same.
Claims (3)
1. dry-type transformer no-load voltage ratio method of testing; Encode to scrambler, the no-load voltage ratio tester device is set, respectively power lead is clipped in the high and low pressure side of tested transformer respectively according to the electric pressure of tested transformer; The gear connecting line couples together with tested three-phase transformer high-tension coil tap gear respectively; The power turn-on CS, rotary sampling switch is connected first loop, and the auxiliary reclay coil gets; Press no-load voltage ratio tester device acknowledgement key, the no-load voltage ratio tester device begins the error amount of actual no-load voltage ratio value and the actual no-load voltage ratio value and the theoretical no-load voltage ratio value of measuring transformer; Scrambler and code translator carry out data processing, and the current no-load voltage ratio tester device of charactron data representing is being tested the gear of transformer.
2. dry-type transformer no-load voltage ratio proving installation; It is characterized in that comprising power control switch, working power pilot lamp, switch, auxiliary reclay, industrial power, scrambler, code translator, charactron composition; Charactron connects code translator, and code translator connects scrambler, and scrambler connects the normally opened contact of auxiliary reclay respectively; The gear connecting line that constitutes by the normally opened contact and the electric wire of auxiliary reclay; The gear connecting line is connected with tested three-phase transformer high-tension coil tap gear respectively, and industrial power connects switch, switch connects the gear connecting line, and the working power pilot lamp is connected on the power control switch.
3. a kind of dry-type transformer no-load voltage ratio method of testing according to claim 1; It is characterized in that at first encoding to scrambler; Secondly the electric pressure according to tested transformer is provided with the no-load voltage ratio tester device; Respectively power lead is clipped in the high and low pressure side of tested transformer respectively, the gear connecting line that will be made up of the normally opened contact and the electric wire of auxiliary reclay couples together with tested three-phase transformer high-tension coil tap gear respectively, and power turn-on CS, working power pilot lamp are bright, the switch that turns clockwise, connect first loop; The coil wherein of auxiliary reclay is got; Three normally opened contact actions become normally closed contact, press no-load voltage ratio tester device acknowledgement key, and this moment, the no-load voltage ratio tester device began the error amount of actual no-load voltage ratio value and the actual no-load voltage ratio value and the theoretical no-load voltage ratio value of measuring transformer; Be connected on three normally opened contacts action becoming normally closed contacts in the loop of industrial power and scrambler, code translator simultaneously, constitute path; Scrambler and code translator carry out data processing, when charactron is shown as " 1 "; Represent that current no-load voltage ratio tester device testing first gear of transformer, simultaneously since auxiliary reclay wherein three coils get electricly, make three normally closed contacts action becoming normally opened contacts that are connected on the 2nd, the 3rd, the 4th, the 5th gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012100405579A CN102565557A (en) | 2012-02-22 | 2012-02-22 | Method and device for testing transformation ratio of dry type transformer |
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| CN2012100405579A CN102565557A (en) | 2012-02-22 | 2012-02-22 | Method and device for testing transformation ratio of dry type transformer |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104360175A (en) * | 2014-11-17 | 2015-02-18 | 国家电网公司 | Measurement method for head-dismounting-free turns ratio test of oil-oil sleeve pipe transformer |
| CN105319478A (en) * | 2014-06-30 | 2016-02-10 | 国家电网公司 | Un-disassembly polarity and transformation ratio testing method for transformer bushing |
| CN108362953A (en) * | 2018-05-21 | 2018-08-03 | 江苏高电电力设备有限公司 | The full-automatic testing platform and method of transformer |
| US20180321650A1 (en) * | 2015-11-09 | 2018-11-08 | Abb Schweiz Ag | Ami based volt-var optimization using online model learing |
| CN108896948A (en) * | 2018-06-20 | 2018-11-27 | 成都理工大学 | A kind of no-load voltage ratio measuring device and measuring method of tandem test potential device |
| CN109991493A (en) * | 2019-03-25 | 2019-07-09 | 珠海格力电器股份有限公司 | Electric energy monitoring method, device, equipment and system |
| CN112433105A (en) * | 2020-10-27 | 2021-03-02 | 吴江变压器有限公司 | Transformer semi-finished product transformation ratio measuring method |
| CN112444689A (en) * | 2019-08-29 | 2021-03-05 | 特变电工京津冀智能科技有限公司 | Temperature rise test method and device for transformer |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105319478A (en) * | 2014-06-30 | 2016-02-10 | 国家电网公司 | Un-disassembly polarity and transformation ratio testing method for transformer bushing |
| CN104360175A (en) * | 2014-11-17 | 2015-02-18 | 国家电网公司 | Measurement method for head-dismounting-free turns ratio test of oil-oil sleeve pipe transformer |
| US10642237B2 (en) * | 2015-11-09 | 2020-05-05 | Abb Schweiz Ag | AMI based volt-VAR optimization using online model learning |
| US20180321650A1 (en) * | 2015-11-09 | 2018-11-08 | Abb Schweiz Ag | Ami based volt-var optimization using online model learing |
| CN108362953A (en) * | 2018-05-21 | 2018-08-03 | 江苏高电电力设备有限公司 | The full-automatic testing platform and method of transformer |
| CN108896948A (en) * | 2018-06-20 | 2018-11-27 | 成都理工大学 | A kind of no-load voltage ratio measuring device and measuring method of tandem test potential device |
| CN108896948B (en) * | 2018-06-20 | 2023-03-21 | 成都理工大学 | Transformation ratio measuring device and method for cascade test transformation equipment |
| CN109991493A (en) * | 2019-03-25 | 2019-07-09 | 珠海格力电器股份有限公司 | Electric energy monitoring method, device, equipment and system |
| CN109991493B (en) * | 2019-03-25 | 2020-05-19 | 珠海格力电器股份有限公司 | Electric energy monitoring method, device, equipment and system |
| CN112444689A (en) * | 2019-08-29 | 2021-03-05 | 特变电工京津冀智能科技有限公司 | Temperature rise test method and device for transformer |
| CN112444689B (en) * | 2019-08-29 | 2022-11-29 | 特变电工京津冀智能科技有限公司 | Temperature rise test method and device for transformer |
| CN112433105A (en) * | 2020-10-27 | 2021-03-02 | 吴江变压器有限公司 | Transformer semi-finished product transformation ratio measuring method |
| CN112433105B (en) * | 2020-10-27 | 2024-02-09 | 吴江变压器有限公司 | Transformer semi-finished product transformation ratio measuring method |
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Application publication date: 20120711 |