CN219225019U

CN219225019U - On-load tap-changer parameter tester

Info

Publication number: CN219225019U
Application number: CN202223399751.4U
Authority: CN
Inventors: 贾煜晗
Original assignee: Xi'an Rich Electrical Co ltd
Current assignee: Xi'an Rich Electrical Co ltd
Priority date: 2022-12-16
Filing date: 2022-12-16
Publication date: 2023-06-20
Anticipated expiration: 2032-12-16

Abstract

The utility model discloses an on-load tap-changer parameter tester, which relates to the technical field of electric power monitoring and comprises a portable box, wherein a fixed limit buckle is fixedly arranged on the front end surface of the portable box, a lifting handle is fixedly connected to the lower end of the front end surface of the portable box, and a tester body is fixedly arranged in the portable box; the portable box comprises a box body and a box cover, and the box body and the box cover are hinged and fixed through a hinge on the back end face; the tester body is including the test box, test access terminal, miniature printer, touch display screen, power link, switch, communication interface, USB socket, reset button and ground connection port are fixed surface mounting on the test box, test box inside fixed mounting has voltage sampler, current sampler, AD converter, can more convenient carry, can be more clear simultaneously the in-process of looking sideways at detect and judge the trouble, be the ideal equipment of on-load tap changer test.

Description

On-load tap-changer parameter tester

Technical Field

The utility model relates to the technical field of power monitoring, in particular to an on-load tap-changer parameter tester.

Background

For a long time, the on-load tap-changer test of the transformer in the power industry is carried out on site, the DC method test is always adopted, and the obtained waveform is compared with the routine test waveform of the tap-changer manufacturer, so that the on-site test of the tap-changer is realized. Because the routine test of the tap changer manufacturer is to test a bare switch and a field transformer with windings, the two tests are very different, the DC method test is limited by a test technical method and technical capability, the on-site tap changer test sometimes has the problems of waveform incapability of interpretation and the like, engineering technicians in all aspects are very controversial, and the main problems are as follows:

a) The direct current test method is only suitable for testing the on-load tap-changer at the neutral point of the winding and with the neutral point drawn out, and can not be used for testing the on-load tap-changer at other positions (wire end, middle part and the like) except the neutral point of the winding and the on-load tap-changer of the single-phase transformer;

b) The direct current test sometimes has large difference between the waveform obtained by the test and the waveform given by the manufacturer due to the test principle, technical capability and the like, and an accurate analysis conclusion cannot be given;

c) Part of DC test waveforms are abnormal, so that the normal action characteristic of the tapping switch cannot be judged, the tapping switch is put into operation with the promise of manufacturer quality, and the safe operation of the tapping switch cannot be ensured;

d) The adoption of the new technology in the design of transformers, the use of reactance type tapping switches, vacuum circuit breaker type tapping switches and the like, makes the direct current test method incapable of meeting the field test requirements.

The utility model provides a Chinese patent application number is CN202021859294.0, discloses an on-load tap changer parameter tester ", including the tester urceolus, the bottom swing joint of tester urceolus has the base, the upper surface swing joint of base has the parameter tester, swing joint has the connecting wire on the outer wall of parameter tester, the other end fixedly connected with jack of connecting wire, the top swing joint of parameter tester has the control board, the upper surface fixedly connected with display screen and the control key of control board is through twining the connecting wire along the screw thread on the wrapping post to avoid too much connecting wire to cause the messy winding of connecting wire in the parameter tester, through inserting the circuit of test equipment in the jack, the parameter tester outside is provided with the instrument that awaits measuring that can be suitable for multiple different grade type plugs, controls the operation of parameter tester through the control key on the control board, and the display screen that sets up is read measurement data through the control board. Can not be carried conveniently in the actual use process, and needs a plurality of people to carry when being carried, so that the test process is more complicated, and also the in-process of transportation is also easy because of the tester that the collision leads to produces the trouble, and in the in-process of carrying out the test simultaneously, can not carry out effectual storage and the printing with the data of test, can not more audio-visual look over.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides an on-load tap-changer parameter tester, which solves the problems set forth in the background art.

In order to achieve the above purpose, the utility model is realized by the following technical scheme: the on-load tap-changer parameter tester comprises a portable box, wherein a fixed limit buckle is fixedly arranged on the front end face of the portable box, a handle is fixedly connected to the lower end of the front end face of the portable box, and a tester body is fixedly arranged in the portable box;

the portable box comprises a box body and a box cover, and the box body and the box cover are hinged and fixed through a hinge on the back end face;

the tester body comprises a test box, wherein a test access terminal, a micro printer, a touch display screen, a power supply connecting end, a power switch, a communication interface, a USB socket, a reset key and a grounding connecting port are fixedly arranged on the upper surface of the test box, and a voltage sampler, a current sampler, an A/D converter, a processor, a measurement protection circuit and a storage are fixedly arranged in the test box.

Preferably, the fixed limit button is of a split structure and is respectively arranged at the joint of the front end face of the box body and the front end face of the box cover, and the handle is fixedly arranged on the front end face of the box body.

Preferably, the test access terminal is provided with four groups and is electrically connected with the voltage sampler and the current sampler respectively, and the voltage sampler and the current sampler are electrically connected with the A/D converter respectively.

Preferably, the processor is electrically connected with the micro printer, the touch display screen, the communication interface, the reset key, the A/D converter, the measurement protection circuit and the storage through wires respectively.

Preferably, the USB socket is electrically connected to the storage device.

Preferably, a storage battery is further arranged in the test box, and electric quantity is supplied through the power supply connecting end.

Advantageous effects

The utility model provides an on-load tap-changer parameter tester. Compared with the prior art, the device has the following

The beneficial effects are that:

1. this on-load tap-changer parameter tester loads the tester through adopting the portable case for it is more convenient at the in-process of carrying, also can carry out better protection to the tester simultaneously, avoids producing the damage in carrying on the way.

2. The on-load tap-changer parameter tester is used for connecting a transformer to be tested through the set test access terminal, describing the transition process of the on-load switch by adopting three paths of synchronous alternating current waveforms, reflecting the switching transition characteristic of the on-load tap-changer more accurately and truly, ensuring simple and clear waveform, and ensuring simple and accurate fault judgment.

3. The on-load tap changer parameter tester can be carried more conveniently, and meanwhile, faults can be detected and judged more clearly in the side view process, so that the on-load tap changer parameter tester is ideal equipment for on-load tap changer testing.

Drawings

FIG. 1 is a schematic diagram of a portable case according to the present utility model;

FIG. 2 is a schematic diagram of the top structure of the tester body according to the present utility model;

FIG. 3 is a schematic view of the internal structure of the tester body according to the present utility model.

In the figure:

1. a portable case; 11. a case; 12. a case cover; 2. fixing a limit buckle; 3. a handle; 4. a tester body; 41. a test box; 42. testing the access terminal; 43. a micro printer; 44. touching the display screen; 45. a power supply connection terminal; 46. a power switch; 47. a communication interface; 48. a USB socket; 49. resetting a key; 410. a ground connection port; 411. a voltage sampler; 412. a current sampler; 413. an A/D converter; 414. a processor; 415. a measurement protection circuit; 416. a reservoir.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, the present utility model provides a technical solution: the on-load tapping switch parameter tester comprises a portable box 1, wherein a fixed limit buckle 2 is fixedly arranged on the front end face of the portable box 1, a lifting handle 3 is fixedly connected to the lower end of the front end face of the portable box 1, and a tester body 4 is fixedly arranged in the portable box 1;

the portable case 1 comprises a case body 11 and a case cover 12, wherein the case body 11 and the case cover 12 are hinged and fixed through a hinge on the back end surface;

preferably, the fixed limiting buckle 2 is of a split structure, and is respectively arranged at the joint of the front end surfaces of the box body 11 and the box cover 12, and the lifting handle 3 is fixedly arranged at the front end surface of the box body 11.

The tester body 4 comprises a test box 41, wherein a test access terminal 42, a micro printer 43, a touch display screen 44, a power supply connection end 45, a power supply switch 46, a communication interface 47, a USB socket 48, a reset key 49 and a grounding connection port 410 are fixedly arranged on the upper surface of the test box 41, and a voltage sampler 411, a current sampler 412, an A/D converter 413, a processor 414, a measurement protection circuit 415 and a storage 416 are fixedly arranged in the test box 41.

Preferably, the test access terminals 42 are provided with four groups and are electrically connected with the voltage sampler 411 and the current sampler 412, and the voltage sampler 411 and the current sampler 412 are electrically connected with the a/D converter 413.

Preferably, the processor 414 is electrically connected to the micro printer 43, the touch display 44, the communication interface 47, the reset button 49, the a/D converter 413, the measurement protection circuit 415, and the memory 416 via wires, respectively.

Preferably, the USB socket 48 is electrically connected to the memory 416.

Preferably, a battery is further disposed in the test box 41, and the electric power is supplied through the power connection terminal 45.

During operation, the portable case 1 is carried through the handle 3, and meanwhile, the portable case 1 is fixed through the fixed limit buckles 2, so that the tester body 4 in the portable case is prevented from falling out in the carrying process, and the case cover 12 is only required to be opened for use when the side view is required;

in side view, the transformer is inserted into the test access terminal 42 through a wire, the operation control is performed by the touch display screen 44, the received voltage and current are collected through the voltage sampler 411 and the current sampler 412, meanwhile, the on-load switch transition process is described by three paths of synchronous alternating current waveforms, the on-load voltage regulating switch switching transition characteristics are reflected more accurately and truly, the data information conversion is performed through the A/D converter 413, the data processing is performed by the processor 414, the data is displayed by the touch display screen 44, the data is stored by the storage 416 at the same time, so that the data can be read again in subsequent work, the measurement protection circuit 26 is used for generating action after the test is completed, the tested transformer is discharged, and the instrument is prevented from being damaged by the reverse potential energy of the transformer.

And all that is not described in detail in this specification is well known to those skilled in the art.

Claims

1. The utility model provides an on-load tapping switch parameter tester, includes portable case (1), its characterized in that: the portable box is characterized in that a fixed limit buckle (2) is fixedly arranged on the front end face of the portable box (1), a handle (3) is fixedly connected to the lower end of the front end face of the portable box (1), and a tester body (4) is fixedly arranged in the portable box (1);

the portable case (1) comprises a case body (11) and a case cover (12), and the case body (11) and the case cover (12) are hinged and fixed through a hinge at the back end face;

the tester body (4) comprises a test box (41), wherein a test access terminal (42), a micro printer (43), a touch display screen (44), a power supply connecting end (45), a power supply switch (46), a communication interface (47), a USB socket (48), a reset key (49) and a grounding connecting port (410) are fixedly arranged on the upper surface of the test box (41), and a voltage sampler (411), a current sampler (412), an A/D converter (413), a processor (414), a measurement protection circuit (415) and a storage (416) are fixedly arranged inside the test box (41).

2. The on-load tap-changer parameter tester of claim 1, wherein: the fixed limit button (2) is of a split structure and is respectively arranged at the joint of the front end face of the box body (11) and the front end face of the box cover (12), and the handle (3) is fixedly arranged on the front end face of the box body (11).

3. The on-load tap-changer parameter tester of claim 1, wherein: the test access terminal (42) is provided with four groups and is electrically connected with the voltage sampler (411) and the current sampler (412) respectively, and the voltage sampler (411) and the current sampler (412) are electrically connected with the A/D converter (413) respectively.

4. The on-load tap-changer parameter tester of claim 1, wherein: the processor (414) is electrically connected with the micro printer (43), the touch display screen (44), the communication interface (47), the reset key (49), the A/D converter (413), the measurement protection circuit (415) and the storage (416) through wires respectively.

5. The on-load tap-changer parameter tester of claim 1, wherein: the USB socket (48) is electrically connected with the storage (416).

6. The on-load tap-changer parameter tester of claim 1, wherein: the test box (41) is internally provided with a storage battery, and electric quantity is supplied through a power supply connecting end (45).