CN204705673U - Automatically the device of loaded switch tap position is adjusted in a kind of Transformer Winding direct current resistance test - Google Patents
Automatically the device of loaded switch tap position is adjusted in a kind of Transformer Winding direct current resistance test Download PDFInfo
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- CN204705673U CN204705673U CN201520251041.8U CN201520251041U CN204705673U CN 204705673 U CN204705673 U CN 204705673U CN 201520251041 U CN201520251041 U CN 201520251041U CN 204705673 U CN204705673 U CN 204705673U
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- 230000005540 biological transmission Effects 0.000 claims description 7
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Abstract
The utility model discloses the device of adjustment loaded switch tap position automatically in the test of a kind of Transformer Winding direct current resistance, it comprises CPU, direct current reductor control circuit, load ratio bridging switch remote operation controller, video monitoring parts, video monitoring parts display terminal; The input end of the output termination direct current reductor control circuit of described CPU; The output terminal of described direct current reductor control circuit is connected to the respective input of on-load shunting switch remote operation controller; Described load ratio bridging switch remote operation controller is arranged on the tank wall of load ratio bridging switch mechanism case; Described video monitoring parts are arranged on described remote operation controller, and the video monitoring parts terminal mated with it is on testing tool; The utility model is easy to operate, time saving and energy saving, solves the problem of time and effort consuming in direct current resistance experimental project.
Description
Technical field
The utility model relates to the device of adjustment loaded switch tap position automatically in the test of a kind of Transformer Winding direct current resistance.
Background technology
According to statistics, in DC Resistance of Transformer test job, effective test period accounts for 40% of total operating time, and mutually echoed, echo improper causing shared by the work such as to do over again excess time respectively between adjustment transformer tap gear, personnel, test efficiency is lower.In addition, when the direct current resistance test carrying out transformer, frequent operation load ratio bridging switch is needed to carry out tap conversion; And at scenes such as capital construction, overhaul technological transformation, when carrying out transformer test, often having mounted mechanism case power supply is not in place, and cannot carry out electrically operated situation.At this moment just the hand operation load ratio bridging switch of staff can only be passed through, time and effort consuming.
Utility model content
The technical problems to be solved in the utility model is to provide the device of automatic adjustment loaded switch tap position easy to operate, time saving and energy saving when a kind of Transformer Winding direct current resistance is tested.
For solving the problems of the technologies described above, technical solution adopted in the utility model is:
Automatically adjust a device for loaded switch tap position in the test of Transformer Winding direct current resistance, it is characterized in that comprising CPU, direct current reductor control circuit, load ratio bridging switch remote operation controller, video monitoring parts, video monitoring parts display terminal; The input end of the output termination direct current reductor control circuit of described CPU; The output terminal of described direct current reductor control circuit is connected to the respective input of on-load shunting switch remote operation controller; Described load ratio bridging switch remote operation controller is arranged on the tank wall of load ratio bridging switch mechanism case; Described video monitoring parts are arranged on described remote operation controller, and the video monitoring parts terminal mated with it is on testing tool.
The beneficial effects of the utility model:
DC Resistance Test of Transformer needed 1 people's specialized operations loaded switch in the past.Application the utility model, achieves the Long-distance Control to loaded switch and status surveillance, replaces the staff carrying out loaded switch operation specially, testing crew can a people be completed instrument and the operation to loaded switch simultaneously.Solve the problem of time and effort consuming in direct current resistance experimental project.
Accompanying drawing explanation
Fig. 1 is theory diagram of the present utility model;
Fig. 2 is the control signal circuit of direct current reductor control circuit;
Fig. 3 is the contactor circuit of direct current reductor control circuit;
Fig. 4 is the reductor positive and reverse rotation control circuit of direct current reductor control circuit;
Fig. 5 is the structural representation of load ratio bridging switch remote operation controller;
Fig. 6 is the structural representation of another angle of load ratio bridging switch remote operation controller;
Wherein, 1, fastening bolt, 2, U-shaped connection pawl, 3, journal stirrup, 4, transmission shaft, 5, reductor, 6, motor, 7, web joint, 8, connecting rod, 9, ring is embraced.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further detailed.
See accompanying drawing 1-6, the present embodiment comprises CPU, direct current reductor control circuit, load ratio bridging switch remote operation controller, video monitoring parts, video monitoring parts display terminal; The input end of the output termination direct current reductor control circuit of described CPU; The output terminal of described direct current reductor control circuit is connected to the respective input of on-load shunting switch remote operation controller; Described load ratio bridging switch remote operation controller is arranged on the tank wall of load ratio bridging switch mechanism case; Described video monitoring parts are arranged on described remote operation controller, and the video monitoring parts terminal mated with it is on testing tool.
Described CPU selects existing product, meets request for utilization, and model such as can be selected to be the product of AT89S51.
Described direct current reductor control circuit is made up of signal amplification circuit, contactor circuit and reducing motor positive and reverse rotation control circuit; Described signal amplification circuit is made up of resistance R1 ~ R6, photoelectrical coupler OC1 ~ OC2, transistor VT1 ~ VT4, relay CJ1 ~ CJ2; Described signal amplification circuit is made up of the branch road that 2 line structures are identical; Wherein the 1st routing resistance R1 ~ R3, photoelectrical coupler OC1, transistor VT1 ~ VT2, relay CJ1 form; The base stage of transistor VT1 connects the corresponding output end of described CPU, the grounded emitter of transistor VT1 through resistance R1; Between the collector that the input end of described photoelectrical coupler OC1 is connected on transistor VT1 after connecting with resistance R2 and+5V, output terminal 3 pin of photoelectrical coupler OC1 connects the base stage of transistor VT2 through resistance R3,4 pin of photoelectrical coupler OC1 connect; Between the collector that relay CJ1 is connected on transistor VT2 and+12V, the grounded emitter of transistor VT2;
Described contactor circuit is made up of the normally opened contact CJ1-1 ~ CJ2-1 of contactor KM1 ~ KM2, relay CJ1 ~ CJ2; The break-make of described relay CJ1 control contactor KM1, namely contactor KM1 is connected between+12V and ground after connecting with the normally opened contact CJ1-1 of relay CJ1; The break-make of described relay CJ2 control contactor KM2, namely contactor KM2 is connected between+12V and ground after connecting with the normally opened contact CJ2-1 of relay CJ2;
Described reducing motor positive and reverse rotation control circuit is made up of the normally opened contact KM1-1 ~ KM1-2 of contactor KM1, the normally opened contact KM2-1 ~ KM2-2 of contactor KM2; Contactor KM1 controls the rotating forward of described reductor 5, and namely normally opened contact KM1-1, the reductor M of contactor KM1, the normally opened contact KM1-2 of contactor KM1 are connected between+12V and-12V after connecting successively; Contactor KM2 controls the reversion of described reductor 5, and namely normally opened contact KM2-2, the reductor M of contactor KM2, the normally opened contact KM2-1 of contactor KM2 are connected between+12V and-12V after connecting successively.
The principle of work of direct current reductor control circuit is as follows:
When carrying out the test of Transformer Winding direct current resistance, make loaded switch " boosting ", CPU respective pins is made to send high-level control signal, make conducting between the emitter of transistor VT1 and collector, the radiating portion of photoelectrical coupler OC1 is connected, and then photoelectrical coupler OC1 receiving portion conducting, make conducting between the emitter of VT2 and collector, relay CJ1 coil electricity.The normally opened contact CJ1-1 of relay CJ1 closes, contactor KM1 coil electricity; Normally opened contact KM1-1, KM1-2 of contactor KM1 are closed, and reductor 5 rotates forward, and drive transmission shaft to drive loaded switch mechanism case to carry out tap conversion, transfer the files.Confirm that on-load tap changers of transformers arrives corresponding tap position by video display terminal, make motor stalling.
Equally, make loaded switch " step-down ", CPU respective pins sends high-level control signal, make conducting between the emitter of transistor VT3 and collector, the radiating portion of photoelectrical coupler OC2 is connected, and then photoelectrical coupler OC2 receiving portion conducting, make conducting between the emitter of VT4 and collector, relay CJ2 coil electricity.The normally opened contact CJ2-1 of relay CJ2 closes, contactor KM2 coil electricity; Normally opened contact KM2-1, KM2-2 of contactor KM1 are closed, and reductor 5 reverses, and drive transmission shaft to drive loaded switch mechanism case to carry out tap conversion, transfer the files.Confirm that on-load tap changers of transformers arrives corresponding tap position by video display terminal, make motor stalling.
See accompanying drawing 5 and accompanying drawing 6, the structure of load ratio bridging switch remote operation controller is: described loaded switch remote operation controller comprises motor 6, the reductor 5 be connected with motor 6, the connecting rod 8 be flexibly connected with reductor 5 by web joint 7 and the holder 10 slided on connecting rod 8; The transmission shaft 4 of described reductor 5 is with the driver slot docking on the hand handle hole on on-load tap changers of transformers mechanism case.Described connecting rod 8 is hinged with web joint 7, and described holder 10 is sheathed on connecting rod 8 by embracing a ring 9, described holder 10 by the journal stirrup 3 that arranges with embrace a ring 9 and be connected, be provided with coupling bolt between described journal stirrup 3 and armful ring 9.The side that described holder 10 is connected with load ratio bridging switch mechanism case tank wall is U-shaped connection pawl 2, and described U-shaped connection pawl 2 is provided with fastening bolt 1.By regulating the position of the position of holder 10 and the adjustable in length transmission shaft 4 of connecting rod 8, to adapt to the mechanism case size of different model.It is arranged on load ratio bridging switch mechanism case tank wall by holder 10.
The utility model adopts mechanical hook-up to drive, and do not change mechanism case structure, reconfiguration secondary circuit, does not change measuring principle, does not affect the accuracy of test data.Loaded switch remote operation controller is driven by the transmission shaft 4 pairs of loaded switch mechanism cases of self, be not subject to the restriction of loaded switch mechanism case field power supply condition and control loop, eradicated when transformer has a power failure test, loaded switch cannot electrically operatedly bother.Adopt the utility model in direct current resistance test process, can at the tap position of the long-range adjustment on-load tap changers of transformers of instrument side.
Claims (5)
1. automatically adjust a device for loaded switch tap position in the test of Transformer Winding direct current resistance, it is characterized in that comprising CPU, direct current reductor control circuit, load ratio bridging switch remote operation controller, video monitoring parts, video monitoring parts display terminal; The input end of the output termination direct current reductor control circuit of described CPU; The output terminal of described direct current reductor control circuit is connected to the respective input of on-load shunting switch remote operation controller; Described load ratio bridging switch remote operation controller is arranged on the tank wall of load ratio bridging switch mechanism case; Described video monitoring parts are arranged on described remote operation controller, and the video monitoring parts terminal mated with it is on testing tool.
2. automatically adjust the device of loaded switch tap position in Transformer Winding direct current resistance test according to claim 1, it is characterized in that: load ratio bridging switch remote operation controller is arranged on load ratio bridging switch mechanism case tank wall by holder (10); Described remote operation controller comprises motor (6), the reductor (5) be connected with motor (6), the connecting rod (8) be flexibly connected with reductor (5) by web joint (7) and the holder (10) slided on connecting rod (8); The transmission shaft (4) of described reductor (5) connects with the hand handle hole on on-load tap changers of transformers mechanism case.
3. automatically adjust the device of loaded switch tap position in Transformer Winding direct current resistance test according to claim 2, it is characterized in that: described direct current reductor control circuit is made up of control signal circuit, contactor circuit and reductor positive and reverse rotation control circuit;
Described control signal electricity routing resistance R1 ~ R6, photoelectrical coupler OC1 ~ OC2, transistor VT1 ~ VT4, relay CJ1 ~ CJ2 form; Described control signal circuit is made up of the branch road that 2 line structures are identical; Wherein the 1st routing resistance R1 ~ R3, photoelectrical coupler OC1, transistor VT1 ~ VT2, relay CJ1 form; The base stage of transistor VT1 connects the corresponding output end of described CPU, the grounded emitter of transistor VT1 through resistance R1; Between the collector that the input end of described photoelectrical coupler OC1 is connected on transistor VT1 after connecting with resistance R2 and+5V, output terminal 3 pin of photoelectrical coupler OC1 connects the base stage of transistor VT2 through resistance R3,4 pin of photoelectrical coupler OC1 connect; Between the collector that relay CJ1 is connected on transistor VT2 and+12V, the grounded emitter of transistor VT2;
Described contactor circuit is made up of the normally opened contact CJ1-1 ~ CJ2-1 of contactor KM1 ~ KM2, relay CJ1 ~ CJ2; The break-make of described relay CJ1 control contactor KM1, namely contactor KM1 is connected between+12V and ground after connecting with the normally opened contact CJ1-1 of relay CJ1; The break-make of described relay CJ2 control contactor KM2, namely contactor KM2 is connected between+12V and ground after connecting with the normally opened contact CJ2-1 of relay CJ2;
Described reductor positive and reverse rotation control circuit is made up of the normally opened contact KM1-1 ~ KM1-2 of contactor KM1, the normally opened contact KM2-1 ~ KM2-2 of contactor KM2; Contactor KM1 controls the rotating forward of described reductor (5), and namely normally opened contact KM1-1, the reductor M of contactor KM1, the normally opened contact KM1-2 of contactor KM1 are connected between+12V and-12V after connecting successively; Contactor KM2 controls the reversion of described reductor (5), and namely normally opened contact KM2-2, the reductor M of contactor KM2, the normally opened contact KM2-1 of contactor KM2 are connected between+12V and-12V after connecting successively.
4. in Transformer Winding direct current resistance test according to claim 2, automatically adjust the device of loaded switch tap position, it is characterized in that: described connecting rod (8) is hinged with web joint (7), described holder (10) is sheathed on connecting rod (8) by embracing ring (9), described holder (10) is connected with an armful ring (9) by the journal stirrup (3) arranged, and is provided with coupling bolt between described journal stirrup (3) and armful ring (9).
5. in Transformer Winding direct current resistance test according to claim 2, automatically adjust the device of loaded switch tap position, it is characterized in that: the side that described holder (10) is connected with load ratio bridging switch mechanism case tank wall is U-shaped connection pawl (2), described U-shaped connection pawl (2) is provided with fastening bolt (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520251041.8U CN204705673U (en) | 2015-04-23 | 2015-04-23 | Automatically the device of loaded switch tap position is adjusted in a kind of Transformer Winding direct current resistance test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520251041.8U CN204705673U (en) | 2015-04-23 | 2015-04-23 | Automatically the device of loaded switch tap position is adjusted in a kind of Transformer Winding direct current resistance test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204705673U true CN204705673U (en) | 2015-10-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520251041.8U Withdrawn - After Issue CN204705673U (en) | 2015-04-23 | 2015-04-23 | Automatically the device of loaded switch tap position is adjusted in a kind of Transformer Winding direct current resistance test |
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| CN (1) | CN204705673U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104849555A (en) * | 2015-04-23 | 2015-08-19 | 国家电网公司 | System for adjusting tapping-off position of on-load switch during DC resistance test |
-
2015
- 2015-04-23 CN CN201520251041.8U patent/CN204705673U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104849555A (en) * | 2015-04-23 | 2015-08-19 | 国家电网公司 | System for adjusting tapping-off position of on-load switch during DC resistance test |
| CN104849555B (en) * | 2015-04-23 | 2018-11-13 | 国家电网公司 | A kind of system that loaded switch tap position is adjusted in D.C. resistance test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151014 Effective date of abandoning: 20181113 |