CN206038810U - Voltage transformer secondary harmonic elimination device detector - Google Patents
Voltage transformer secondary harmonic elimination device detector Download PDFInfo
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- CN206038810U CN206038810U CN201621087359.8U CN201621087359U CN206038810U CN 206038810 U CN206038810 U CN 206038810U CN 201621087359 U CN201621087359 U CN 201621087359U CN 206038810 U CN206038810 U CN 206038810U
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Abstract
Voltage transformer secondary harmonic elimination device detector, the device by panel and storage unit, control electrical unit, digital processing unit unit, harmonic generation unit, output switching and interface, detecting element, protected location totally seven units form. The panel contains host computer processor unit, USB interface, data storage, display screen, keyboard with storage unit, harmonic generation unit includes the DA conversion and enlargies module, power amplifier busbar voltage unit, the enlarged module of fundamental power, harmonic power amplification module. The utility model discloses can the high accuracy, troubles such as resonance, ground connection, overvoltage take place for quick, safe 35kV and the following electric wire netting of simulating, the harmonic elimination of quick test PT secondary harmonic elimination device and ground connection, overvoltage such as report an emergency and ask for help or increased vigilance at the function, the effectual traditional approach of having solved exists fragile tester, potential safety hazard, the difficult scheduling problem of test.
Description
Technical field
A kind of voltage transformer secondary harmonic elimination apparatus detector of this utility model, belongs to secondary equipment in power system detection neck
Domain.
Background technology
At present, PT（Voltage transformer）Secondary resonance elimination device as one of two big harmonic elimination nucleus equipment of rural power grids transformer station, its
Good military service performance is to ensure rural power grids transformer station's power supply quality and stability essential condition.But being no lack of in the transformer station that puts into operation has
PT secondary resonance elimination devices damage caused accident.As on December 27th, 2015, xx transformer stations 10kV#4 bus PT burn, Jing is investigated
It was found that during PT resonance, resonance potential is not up to a resonance eliminator initiation value, secondary resonance elimination device is damaged already and cannot eliminate electrical network
Resonance.Using the conventional test methodologies of relay-protection tester dosage, which is deposited for the functional check of PT secondary resonance elimination devices at present
Excessive, the fragile relay-protection tester, in some instances it may even be possible to affect personal security in test transient resonance electric current.Therefore, tradition inspection
Test the method for inspection and there is fragile tester, potential safety hazard, test.
The content of the invention
For solving above-mentioned technical problem, this utility model provides a kind of high accuracy, the quick, voltage transformer secondary of safety
Harmonic elimination apparatus detector, which can simulate 35kV and its following electrical network occurs the failures such as resonance, ground connection, overvoltage, quick to check
The function such as the harmonic elimination of PT secondary resonance elimination devices and ground connection, overvoltage alarm, it is ensured that the reliable and stable operation of PT secondary resonance elimination devices.Have
There is fragile tester, potential safety hazard, test in the traditional method that solves of effect.
The technical scheme that this utility model is taken is；
Voltage transformer secondary harmonic elimination apparatus detector, including panel and storage element, control power subsystem, digital processing
Device unit, harmonics generation unit, output switching and interface, detector unit, protection location.The panel is included with storage element
Position machine processor unit, USB interface, data storage, display screen, keyboard.Host computer processor unit connects USB respectively and connects
Mouth, data storage, display screen, keyboard.Control power subsystem connects host computer processor unit, digital processing unit list respectively
Unit.The digital processor unit connects host computer processor unit, detector unit, protection location, digital processing unit list respectively
Unit receives the signal of these units, after completing signal processing, sends to host computer processor unit and D/A conversions and amplification module
Information.
The harmonics generation unit includes that D/A conversions and amplification module, power amplifier busbar voltage unit, fundamental power amplify mould
Block, harmonic power amplification module；D/A is changed and amplification module connection digital processor unit and fundamental power amplification module, humorous
Wave power amplification module completes the D/A conversions of harmonic wave and amplifies, and power amplifier busbar voltage unit is respectively to fundamental power amplification module
Harmonic power amplifier module sends signal；Fundamental power amplification module receives the signal of D/A conversions and amplification module, and to defeated
Go out switching and interface sending signal；Harmonic power amplification module receives the signal of D/A conversions and amplification module, and to output switching
And interface sending signal.
The output switching and interface connect fundamental power amplification module, harmonic power amplification module, output switching respectively
And the instruction of interface fundamental power amplification module harmonic power amplifier module, and provide anti-to detector unit, protection location
Feedback signal, while provide tested number to PT secondary resonance elimination devices.
The detector unit connection output switching and interface, the voltage electricity that detector unit detection output switching and interface send
Stream change detection signal, and instruction is sent to digital processor unit.
The protection location connection output switching and interface, protection location receive the protection letter that output switching and interface send
Number, and instruction is sent to digital processor unit.
Host computer processor unit connects USB interface, and USB interface is used for the copy of test data；
Host computer processor unit connects data storage, and data storage is used for the real-time storage of test data；
Host computer processor unit connects display screen, and display screen is used for showing voltage condition, frequency size, test knot in real time
Really；
Host computer processor unit connects keyboard, and keyboard enters edlin to experimental condition.
A kind of voltage transformer secondary harmonic elimination apparatus detector of this utility model, compared with the prior art, with significant
Advantage and good effect：
1st, this utility model protection location accurately can be protected to tester and PT secondary resonance elimination devices, it is to avoid often
During rule test, PT secondary resonance elimination devices burn bis- harmonic elimination dresses of tester and PT when resonance moment high current is produced because of excessively stream
Put；
2nd, this utility model fundamental wave output voltage be 0-200V, electric current be 0-2A, harmonic wave voltage be 0-50V, electric current
For 0-16A, there is part harmonic using fundamental wave and part automatic switchover occurs, can optimizing check fundamental frequency, frequency dividing and frequency multiplication difference
During correspondence difference operation voltage, the optimization of required harmonics generation unit power.
3rd, this utility model can be fast automatic to verify secondary resonance elimination device action situation in 1s, judges automatically secondary
Whether harmonic elimination apparatus function is correct.
4th, this utility model apparent size is little, light weight, operation are intelligent, facilitates individual soldier to carry maintenance.
Description of the drawings
Fig. 1 is structural representation of the present utility model.
Specific embodiment
Below by this utility model is described in detail, with reference to accompanying drawing 1, to the technical solution of the utility model, which enters traveling one
Step explanation.It should be noted that its harmonic elimination principle of the PT secondary resonance elimination devices 9 of certain model cited in following embodiments is full
The requirement of sufficient power system PT secondary resonance elimination devices instantly, universality are stronger.
Different types of PT secondary resonance elimination devices, which is using the size for judging 3U0 under different frequency.Its harmonic elimination apparatus is former
Reason is as follows：
Resonance criterion：17HZ harmonic voltages >=17V, 25HZ harmonic voltages >=25V, 150HZ harmonic voltages >=33V；
Ground connection criterion：Fundamental voltage >=30V；
Over-pressed criterion：Fundamental voltage >=120V.
As shown in figure 1, voltage transformer secondary harmonic elimination apparatus detector, including tester housing 1, panel and storage element
2nd, power subsystem 3, digital processor unit 4, harmonics generation unit 5, output switching and interface 6, detector unit 7, protection are controlled
Unit 8,
The panel includes host computer processor unit 21, USB interface 22, data storage 23, display with storage element 2
Screen 24, keyboard 25.
Host computer processor unit 21 connects USB interface 22, data storage 23, display screen 24, keyboard 25 respectively.
Control power subsystem 3 connects host computer processor unit 21, digital processor unit 4 respectively.
The digital processor unit 4 connects host computer processor unit 21, detector unit 7, protection location 8 respectively, number
Word processing device unit 4 receives the signal of these units, after completing signal processing, changes to host computer processor unit 21 and D/A
And amplification module 51 sends information.
The harmonics generation unit 5 includes D/A conversions and amplification module 51, power amplifier busbar voltage unit 52, fundamental power
Amplification module 53, harmonic power amplification module 54；D/A is changed and the connection digital processor unit 4 of amplification module 51 and fundamental wave work(
Rate amplification module 53, harmonic power amplification module 54 complete the D/A conversions of harmonic wave and amplify, and power amplifier busbar voltage unit 52 is distinguished
Signal is sent to 53 harmonic power amplifier module 54 of fundamental power amplification module；Fundamental power amplification module 53 receives D/A and turns
Change and amplification module 51 signal, and to 6 sending signal of output switching and interface；Harmonic power amplification module 54 receives D/A and turns
Change and amplification module 51 signal, and to 6 sending signal of output switching and interface.
The output switching and interface 6 connect fundamental power amplification module 53, harmonic power amplification module 54, output respectively
Switching and interface 6 receive 53 harmonic power amplifier module 54 of fundamental power amplification module and instruct, and to detector unit 7, protection
Unit 8 provides feedback signal, while providing tested number to PT secondary resonance elimination devices 9.
The detector unit 7 connects output switching and interface 6, the electricity that the detection output switching of detector unit 7 and interface 6 send
Current voltage change detection signal, and instruction is sent to digital processor unit 4.
The protection location 8 connects output switching and interface 6, and protection location 8 receives the guarantor that output switching and interface 6 send
Shield signal, and instruction is sent to digital processor unit 4.
Host computer processor unit 21 connects USB interface 22, and USB interface 22 is used for the copy of test data.
Host computer processor unit 21 connects data storage 23, and data storage 23 is used for depositing in real time for test data
Storage.
Host computer processor unit 21 connects display screen 24, display screen 24 be used for showing in real time voltage condition, frequency size,
Result of the test.
Host computer processor unit 21 connects keyboard 25, and keyboard 25 enters edlin to experimental condition.
Wherein：
The host computer processor unit 21 includes microprocessor STM32F103VET6, microprocessor STM32F103VET6
Connection
Communication chip MAX3221CDBR, USB chip CH376S.
The data storage 23 includes：Memory cell SST39VF6401-70-4I-EK, technotron
IS62C256AL-45UL and three-terminal voltage-stabilizing chip NCP1117DT33RKG.
The display screen 24 adopts QPY6448-056-NN09L, the connection control chip RA8835AP3N sums of display screen 24
According to process chip MAX3221CDBR.
The control power subsystem 3 is by type of voltage step-up/down converter TPS63020DJSR, DC-to-DC converter NCV3163PW
Connect and compose.
The digital processor unit 4 is by dsp processor TMS320F2808PZA, integrated circuit XC9572TQ100AMM-
10C and integrated circuit TCM809RENB713 is constituted.
The D/A conversions and amplification module 51 are made up of DAC7644E and comparator chip OP07C.
Power amplifier busbar voltage unit 52 is by rectifier bridge GBJ2510, rectifier bridge stack KBP310, KBU810 and voltage stabilizing chip
LM317 is constituted.
Fundamental power amplification module 53 is by power field effect pipe IRFP460, op-amp OPA277, amplifier chip
INA132 is constituted.
Harmonic power amplification module 54 is made up of IXTQ36N50P, audion J5027 and A1156 chip；
Output switching and interface 6 are by microprocessor AT89C2051, ULN2003AG4 and relay 951-2C-24D chip structures
Into.
Detector unit 7 is made up of LM393P, comparator chip OP07C and optocoupler TLP181.
Protection location 8 is made up of audion 2N5551 and CMOS chip 74HC32.
Implementation steps：
On panel and the storage element 2 of the utility model device, by keyboard 25 by the initial of required generation voltage 3U0
The parameters such as amplitude, cut-off amplitude, amplitude variable quantity, frequency size are configured, and are displayed in display screen 24, are stored in data storage
Device 23, and digital data transmission is converted into digital processor unit 4 by host computer processor unit 21.The digital processing
4 pairs of signals of device unit such as are identified, are superimposed and convert at the digital processing, are transferred to harmonics generation unit 5.The harmonic wave occurs
Digital signal is converted into analogue signal by the D/A conversions of unit 5 and amplification module 51, and carries out the preliminary amplification of signal；Pass through
The fundamental signal of 53 pairs of inputs of fundamental power amplification module carries out power amplification, can also adopt harmonic power amplification module 54
Power amplification is carried out to the harmonic signal of the input, and adopts power amplifier busbar voltage unit 52 to guarantee the power supply for exporting for meeting not
The steady voltage source of same frequency；
The selection relay of output switching and interface 6, by the steady voltage source of the different frequency by carry out fundamental frequency,
The voltage switching of frequency dividing and frequency multiplication, the voltage Jing after switching act on PT secondary resonance elimination devices 9.When reaching PT secondary resonance elimination devices
9 resonance, ground connection, after over-pressed function criterion, 9 harmonic elimination element movement of PT secondary resonance elimination devices will produce larger instantaneous short-circuit
Electric current, while 9 both end voltage of PT secondary resonance elimination devices will also change.
Detector unit 7 is by the signal of the voltage change ratio and current changing rate that detect output switching and at interface 6, and will believe
Number pass to digital processor unit 4, after digital processor unit 4 is by signal processing, on the one hand pass to harmonics generation unit 5
Stop harmonic wave occurring, on the other hand, the voltage change signal of collection and result are passed to panel is carried out with storage element 2
Show and store.
Protection location 8 quickly accesses big resistance after 9 harmonic elimination element movement of PT secondary resonance elimination devices, eliminates instantaneous short-circuit
The impact of electric current, it is to avoid burn tester and PT secondary resonance elimination devices 9.
USB interface 22 in the panel and storage element 2, using USB3.0 interfaces, for the copy of test data.
Claims (2)
1. voltage transformer secondary harmonic elimination apparatus detector, including panel and storage element（2）, control power subsystem（3）, numeral
Processor unit（4）, harmonics generation unit（5）, output switching and interface（6）, detector unit（7）, protection location（8）, which is special
Levy and be：The panel and storage element（2）Including host computer processor unit（21）, USB interface（22）, data storage
（23）, display screen（24）, keyboard（25）；Host computer processor unit（21）Connect USB interface respectively（22）, data storage
（23）, display screen（24）, keyboard（25）；Control power subsystem（3）Connect host computer processor unit respectively（21）, digital processing
Device unit（4）；The digital processor unit（4）Connect host computer processor unit respectively（21）, detector unit（7）, protection
Unit（8）, digital processor unit（4）The signal of these units is received, after completing signal processing, to host computer processor unit
（21）Change with D/A and amplification module（51）Transmission information；The harmonics generation unit（5）Change including D/A and amplification module
（51）, power amplifier busbar voltage unit（52）, fundamental power amplification module（53）, harmonic power amplification module（54）；D/A change and
Amplification module（51）Connection digital processor unit（4）With fundamental power amplification module（53）, harmonic power amplification module（54）
Complete the D/A conversions of harmonic wave and amplify, power amplifier busbar voltage unit（52）Respectively to fundamental power amplification module（53）Harmonic
Power amplifier module（54）Send signal；Fundamental power amplification module（53）Receive D/A conversions and amplification module（51）Signal,
And to output switching and interface（6）Sending signal；Harmonic power amplification module（54）Receive D/A conversions and amplification module（51）'s
Signal, and to output switching and interface（6）Sending signal；The output switching and interface（6）Connect fundamental power respectively to amplify
Module（53）, harmonic power amplification module（54）, output switching and interface（6）Receive fundamental power amplification module（53）Harmonic
Power amplifier module（54）Instruction, and to detector unit（7）, protection location（8）Feedback signal is provided, while to bis- harmonic eliminations of PT
Device（9）Tested number is provided；The detector unit（7）Connection output switching and interface（6）, detector unit（7）Detection outputting cutting
Change and interface（6）The voltage x current change detection signal for sending, and to digital processor unit（4）Send instruction；The protection
Unit（8）Connection output switching and interface（6）, protection location（8）Receive output switching and interface（6）The protection signal for sending,
And to digital processor unit（4）Send instruction.
2. voltage transformer secondary harmonic elimination apparatus detector according to claim 1, it is characterised in that：Host computer processor list
Unit（21）Connection USB interface（22）, USB interface（22）For the copy of test data；Host computer processor unit（21）Connection
Data storage（23）, data storage（23）For the real-time storage of test data；Host computer processor unit（21）Connection
Display screen（24）, display screen（24）For showing voltage condition, frequency size, result of the test in real time；Host computer processor unit
（21）Connection keyboard（25）, keyboard（25）Edlin is entered to experimental condition.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621087359.8U CN206038810U (en) | 2016-09-28 | 2016-09-28 | Voltage transformer secondary harmonic elimination device detector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621087359.8U CN206038810U (en) | 2016-09-28 | 2016-09-28 | Voltage transformer secondary harmonic elimination device detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206038810U true CN206038810U (en) | 2017-03-22 |
Family
ID=58297200
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621087359.8U Active CN206038810U (en) | 2016-09-28 | 2016-09-28 | Voltage transformer secondary harmonic elimination device detector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106324407A (en) * | 2016-09-28 | 2017-01-11 | 国家电网公司 | Voltage transformer's second harmonic elimination device detector |
-
2016
- 2016-09-28 CN CN201621087359.8U patent/CN206038810U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106324407A (en) * | 2016-09-28 | 2017-01-11 | 国家电网公司 | Voltage transformer's second harmonic elimination device detector |
| CN106324407B (en) * | 2016-09-28 | 2023-07-25 | 国家电网公司 | Detector for secondary resonance elimination device of voltage transformer |
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