CN207232331U - A kind of transformer on-load tap changer tester calibrating installation - Google Patents

Abstract

The utility model discloses a kind of transformer on-load tap changer tester calibrating installation, including tap switch, tester and calibrating installation, the tap switch is electrically connected with tester, and tester includes GDT 1 and control panel, and GDT 1 is electrically connected with tap switch；The GDT's 1 is internally provided with current sample filter circuit, voltage sample filter circuit, sampling A/D chip, the first programmable amplifier, the second programmable amplifier and microcontroller；The tester is electrically connected with calibrating installation, and calibrating installation includes central processing unit, SD storage units and display screen.This transformer on-load tap changer tester calibrating installation is examined and determine more accurately and quickly by the GDT 1 of setting；The signal detected can quickly be analyzed and processed by the calibrating installation of setting, it is capable of automatic alarm when exception, without manually checking, labor intensity is reduced, next step calibrating is carried out when normal so that calibrating is more efficient, overall to lower precise and high efficiency, labor intensity is low.

Description

A kind of transformer on-load tap changer tester calibrating installation

Technical field

Technical field of transformer equipment is the utility model is related to, is specially a kind of transformer on-load tap changer tester inspection Determine device.

Background technology

On-load tap changers of transformers is the unique motion component with transformer high-voltage connection of circuit, its high failure rate, becomes The failure frequency of depressor load ratio bridging switch almost accounts for more than the 20% of transformer fault total degree, and becomes with having to carry The usage quantity of depressor increases the growth with usage time, and the failure rate that transformer occurs also is raising, and the event of significant proportion Barrier occurs at on-load tap changers of transformers, so the calibrating to on-load tap changers of transformers is increasingly paid attention to, therefore needs A kind of transformer on-load tap changer tester calibrating installation, examines and determine the working status of on-load tap changers of transformers, in time place Manage potential faults.

Utility model content

The purpose of this utility model is to provide a kind of transformer on-load tap changer tester calibrating installation, possesses calibrating Speed is fast and accurate, easy to observe, it is time saving and energy saving the advantages of, solve slow and inaccurate, calibrating of examining and determine speed in the prior art Process is cumbersome, it is time-consuming and laborious the problem of.

To achieve the above object, the utility model provides following technical solution：A kind of on-load tap changers of transformers test Instrument calibrating installation, including tap switch, tester and calibrating installation, the tap switch are electrically connected with tester, tester Including GDT-1 and control panel, GDT-1 is electrically connected with tap switch；The GDT-1's is internally provided with current sample filtering Circuit, voltage sample filter circuit, sampling A/D chip, the first programmable amplifier, the second programmable amplifier and microcontroller, current sample Filter circuit connects the tap switch of front end, current sample filter circuit and voltage sample filtered electrical with voltage sample filter circuit The other end on road is electrically connected the first programmable amplifier and the second programmable amplifier, the first programmable amplifier and second program-controlled Amplifier is electrically connected sampling A/D chip, and sampling A/D chip is electrically connected with microcontroller；The control panel upper end is provided with terminals Son, operated key, function key and power switch, power switch are electrically connected with microcontroller；The wire connection terminal, operated key and function Key is all connected with microcontroller；The side of the control panel is provided with first data transmission interface, first data transmission interface and list Piece machine is electrically connected；The tester and calibrating installation are electrically connected, calibrating installation include central processing unit, SD storage units and Display screen, SD storage units and display screen are electrically connected with the central processing unit；The side of the calibrating installation is provided with second Data transmission interface, the second data transmission interface are electrically connected with the central processing unit；The first data transmission interface and second Data line is provided between data transmission interface, first data transmission interface and the second data transmission interface pass through data transfer Line connects.

Preferably, the scope of the calibrating installation calibration transit time is 0~250ms.

Preferably, the scope of the calibrating installation calibration transition resistance is 0~50 Ω.

Preferably, signal alarm lamp is provided with the calibrating installation, signal alarm lamp is electrically connected with the central processing unit.

Preferably, the 3rd data transmission interface is provided with the calibrating installation, the 3rd data transmission interface can connect electricity Brain.

Compared with prior art, the beneficial effects of the utility model are as follows：

This transformer on-load tap changer tester calibrating installation, when connecting GDT-1, is passed through by the GDT-1 of setting After two seconds, GDT-1 can quickly catch load ratio bridging switch and the opportunity closed a floodgate occurs for the first time, send asynchronous switch-on instruction, side by side After success, it is possible to start to examine and determine, unsuccessful then delay side by side waits next phase synchronous operation so that calibrating is more accurate and fast Speed；The signal detected can quickly be analyzed and processed by the calibrating installation of setting, handled by central processing unit, in The scope for the calibration transition resistance that central processor is set is 0~50 Ω, and the scope for calibrating transit time is 0~250ms, works as center Processor analysis transition resistance scope more than the scope of 0~50 Ω or transit time more than 0~250ms when, can report automatically It is alert, without manually checking, labor intensity is reduced, next step calibrating is carried out when normal so that calibrating is more efficient, overall to lower Precise and high efficiency, labor intensity are low.

Brief description of the drawings

Fig. 1 is the utility model overall structure diagram；

Fig. 2 is the utility model control panel structure diagram；

Fig. 3 is the utility model back side flow chart.

In figure：1 tap switch, 2 testers, 21GDT-1,211 current sample filter circuits, 212 voltage sample filtered electricals Road, 213 sampling A/D chips, 214 first programmable amplifiers, 215 second programmable amplifiers, 216 microcontrollers, 22 control panels, 221 connect Line terminals, 222 operated keys, 223 function keys, 224 power switches, 225 first data transmission interfaces, 3 calibrating installations, 31 centers Processor, 32SD storage units, 33 display screens, 34 second data transmission interfaces, 35 signal alarm lamps, 36 the 3rd data transfers connect Mouth, 4 data lines.

Embodiment

The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work All other embodiments obtained, shall fall within the protection scope of the present invention.

Please refer to Fig.1-3, a kind of transformer on-load tap changer tester calibrating installation, including tap switch 1, test Instrument 2 and calibrating installation 3, tap switch 1 are electrically connected with tester 2, and tester 2 includes GDT-1~21 and control panel 22, GDT-1~21 are electrically connected with tap switch 1；GDT-1~21 be internally provided with current sample filter circuit 211, voltage is adopted Sample filter circuit 212, sampling A/D chip 213, the first programmable amplifier 214, the second programmable amplifier 215 and microcontroller 216, electric current Wave filtering circuit 211 and voltage sample filter circuit 212 connect the tap switch 1 of front end, current sample filter circuit 211 The first programmable amplifier 214 and the second programmable amplifier is electrically connected with the other end of voltage sample filter circuit 212 215, the first programmable amplifier 214 and the second programmable amplifier 215 are electrically connected sampling A/D chip 213, sampling A/D chip 213 and monolithic Machine 216 is electrically connected, right when current sample filter circuit 211, voltage sample filter circuit 212 are linked on tap switch 1 The electric current and voltage sampled is filtered, and gives the signal transmission after filtering to the first programmable amplifier 214 and the second journey Amplifier 215 is controlled, the first programmable amplifier 214 and the second programmable amplifier 215 are amplified signal processing, then will amplification Later to sampling A/D chip 213, sampling A/D chip 213 is handled transmitting a signal to microcontroller 216 signal transmission；Control 22 upper end of panel is provided with wire connection terminal 221, operated key 222, function key 223 and power switch 224, power switch 224 and list Piece machine 216 is electrically connected；Wire connection terminal 221, operated key 222 and function key 223 are all connected with microcontroller 216, pass through wire connection terminal 221st, 223 control operation of operated key 222 and function key, can be that whole device is powered by the switch 224 that powers on；Control panel 22 side is provided with first data transmission interface 225, and first data transmission interface 225 is electrically connected with microcontroller 216；Survey Examination instrument 2 is electrically connected with calibrating installation 3, and calibrating installation 3 includes central processing unit 31, SD storage units 32 and display screen 33, SD Storage unit 32 and display screen 33 are electrically connected with central processing unit 31；The side of calibrating installation 3 is provided with the second data biography Defeated interface 34, the second data transmission interface 34 are electrically connected with central processing unit 31, and calibrating installation 3 calibrates the scope of transit time For the tester 2 of 0~250ms, the tester 2 that the scope that calibrating installation 3 calibrates transition resistance is 0~50 Ω, calibrating installation 3 On be provided with signal alarm lamp 35, signal alarm lamp 35 is electrically connected with central processing unit 31；First data transmission interface 225 with Data line 4,225 and second data transmission interface 34 of first data transmission interface are provided between second data transmission interface 34 Connected by data line 4, the signal in microcontroller 216 can give data and signal transmission to center by data line 4 Processor 31, central processing unit 31 can analysis voltage signal and current signal, by the way that the scope of transition resistance is calculated, calibrating The scope that device 3 calibrates transition resistance is 0~50 Ω, when the scope of the transition resistance detected is in 0~50 Ω, is started Examine and determine in next step, due to the processing of GDT-1~21, when connecting GDT-1~21, after two seconds, GDT-1~21 can quickly be caught Catch load ratio bridging switch and the opportunity closed a floodgate occur for the first time, send asynchronous switch-on instruction, side by side after success, it is possible to start to examine Fixed, GDT-1~21 of setting are so that calibrating more accurately and quickly, can cause load ratio bridging switch to turn from a tapping gear Enter another tapping gear, when load ratio bridging switch is transferred to another tapping gear from a tapping gear, centre existed Cross the time, and the data that microcontroller 216 can will receive data and signal transmission to central processing unit 31, central processing unit 31 With signal by display screen 33 by waveform and numeral form show, so as at the same time export transit time signal and Resistance signal, when calibrating installation 3 calibrate transit time scope be 0~250ms, be normally carried out in next step examine and determine, when calibrating dress The scopes of 3 calibration transition resistances is put more than 0~50 Ω or calibrating installation 3 calibrates the scope of transit time more than 0~250ms, Central processing unit 31 alarms control signal alarm lamp 35, conveniently discovers and goes wrong, and without manually checking, reduces work Intensity, is provided with the 3rd data transmission interface 36 on calibrating installation 3, the 3rd data transmission interface 36 can connect computer, pass through Three data transmission interfaces 36, which can connect computer, can pass through computation so that calibrating enhanced convenience.

In summary：This transformer on-load tap changer tester calibrating installation is by GDT-1~21 of setting, when connecing During logical GDT-1~21, after two seconds, GDT-1~21 can quickly catch load ratio bridging switch and the opportunity closed a floodgate occur for the first time, Asynchronous switch-on instruction is sent, side by side after success, it is possible to start to examine and determine, unsuccessful then delay side by side waits next same period phase behaviour Make so that calibrating is more accurately and quickly；The signal detected can quickly be analyzed and processed by the calibrating installation 3 of setting, Handled by central processing unit 31, the scope for the calibration transition resistance that central processing unit 31 is set is 0~50 Ω, calibration The scope of transit time is 0~250ms, when the scope for the transition resistance that central processing unit 31 is analyzed is more than 0~50 Ω or transition It is capable of automatic alarm when the scope of time is more than 0~250ms, without manually checking, labor intensity is reduced, is carried out down when normal One step is examined and determine so that calibrating is more efficient, overall to lower precise and high efficiency, and labor intensity is low.

While there has been shown and described that the embodiment of the utility model, for the ordinary skill in the art, It is appreciated that these embodiments can be carried out with a variety of changes in the case where not departing from the principle of the utility model and spirit, repaiied Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.

Claims (5)

1. a kind of transformer on-load tap changer tester calibrating installation, including tap switch (1), tester (2) and calibrating dress Put (3), it is characterised in that：The tap switch (1) and tester (2) are electrically connected, tester (2) include GDT-1 (21) and Control panel (22), GDT-1 (21) are electrically connected with tap switch (1)；The GDT-1 (21) is internally provided with current sample Filter circuit (211), voltage sample filter circuit (212), sampling A/D chip (213), the first programmable amplifier (214), the second journey Amplifier (215) and microcontroller (216) are controlled, before current sample filter circuit (211) and voltage sample filter circuit (212) connect The other end difference of the tap switch (1) at end, current sample filter circuit (211) and voltage sample filter circuit (212) is electrical Connect the first programmable amplifier (214) and the second programmable amplifier (215), the first programmable amplifier (214) and second program-controlled is put Big device (215) is electrically connected sampling A/D chip (213), and sampling A/D chip (213) is electrically connected with microcontroller (216)；The chain of command Plate (22) upper end is provided with wire connection terminal (221), operated key (222), function key (223) and power switch (224), power switch (224) it is electrically connected with microcontroller (216)；The wire connection terminal (221), operated key (222) and function key (223) are all connected with list Piece machine (216)；The side of the control panel (22) is provided with first data transmission interface (225), first data transmission interface (225) it is electrically connected with microcontroller (216)；The tester (2) is electrically connected with calibrating installation (3), and calibrating installation (3) includes Central processing unit (31), SD storage units (32) and display screen (33), SD storage units (32) and display screen (33) with center Processor (31) is electrically connected；The side of the calibrating installation (3) is provided with the second data transmission interface (34), and the second data pass Defeated interface (34) is electrically connected with central processing unit (31)；The first data transmission interface (225) connects with the second data transfer Data line (4) is provided between mouth (34), first data transmission interface (225) passes through number with the second data transmission interface (34) Connected according to transmission line (4).

A kind of 2. transformer on-load tap changer tester calibrating installation according to claim 1, it is characterised in that：It is described The scope of calibrating installation (3) calibration transit time is 0~250ms.

A kind of 3. transformer on-load tap changer tester calibrating installation according to claim 1, it is characterised in that：It is described The scope of calibrating installation (3) calibration transition resistance is 0~50 Ω.

A kind of 4. transformer on-load tap changer tester calibrating installation according to claim 1, it is characterised in that：It is described Signal alarm lamp (35) is provided with calibrating installation (3), signal alarm lamp (35) is electrically connected with central processing unit (31).

A kind of 5. transformer on-load tap changer tester calibrating installation according to claim 1, it is characterised in that：It is described The 3rd data transmission interface (36) is provided with calibrating installation (3), the 3rd data transmission interface (36) can connect computer.