CN201348954Y - Novel phase selection closing control device - Google Patents
Novel phase selection closing control device Download PDFInfo
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- CN201348954Y CN201348954Y CNU2008202057998U CN200820205799U CN201348954Y CN 201348954 Y CN201348954 Y CN 201348954Y CN U2008202057998 U CNU2008202057998 U CN U2008202057998U CN 200820205799 U CN200820205799 U CN 200820205799U CN 201348954 Y CN201348954 Y CN 201348954Y
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- control device
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Abstract
The utility model relates to the phase selection closing control technique of alternating current power, in particular to a novel phase selection closing control device, which comprises a zero-crossing trigger module, a filter module, a human-computer module, a single chip microcomputer module, an output separation module, a pull-in module, a maintenance module and an execution module. The zero-crossing trigger module, the filter module, the single chip microcomputer module, the output separation module and the execution module are sequentially connected in order, the single chip microcomputer module is connected with the human-computer module, and both the pull-in module and the maintenance module are connected with the execution module. The novel phase selection closing control device is controlled by the single chip microcomputer, can conveniently and accurately adjust phase selection angles according to test requirements with error ranging from minus 3 degrees to 3 degrees, can detect and shield voltage out of 50/60Hz through software, has extremely strong interference resistance, can measure closing time of pole switches through self-detection, and can compensate closing time to enable the pole switches to be capable of being closed simultaneously.
Description
Technical field
The present invention relates to the phase selection control technology of AC power, specifically is a kind of novel phase selection control device, is used to control the connection phase place of major loop switch.
Background technology
When usually low-voltage electrical apparatus being done short circuit test, require experimental rig must have the function of voltage phase selection in power frequency 50/60Hz circuit, the angle of selecting phase is 0～360 °, and precision must be controlled at ± 5 ° in.And known phase selection device often has following shortcoming:
(1) poor anti jamming capability, the zero passage voltage that is subject to non-50/60Hz interference signal triggers;
(2) circuit complexity is unfavorable for maintenance;
(3) select the phase angle not accurate enough, repeatability is bad, and it is very big influenced by supply voltage, especially requires 0 ° of combined floodgate time error very easily to exceed standard-required;
(4) three-phase or heterogeneous phase-selecting switch can not be controlled every phase phase selection angle separately.
The utility model content
The utility model is for remedying the deficiencies in the prior art, a kind of novel phase selection control device is provided, be used for low-voltage electrical apparatus and when the 50/60Hz circuit carries out short circuit test, control the connection phase place of major loop switch, overcome phase selection device circuit complexity, interference resistance in the past poor, select that the phase angle is inaccurate, repeatability shortcoming such as bad.
For achieving the above object, the utility model has adopted following technical scheme:
Novel phase selection control device, comprise zero cross fired module, filter module, man-machine module, single-chip microcomputer module, output isolation module, adhesive module, keep module and carry out module, module is isolated in zero cross fired module, filter module, single-chip microcomputer module, output and the execution module is linked in sequence successively, the single-chip microcomputer module also is connected with man-machine module, wherein the adhesive module with keep module all with carry out module and be connected.
Its operation principle is as follows:
Voltage signal in the zero cross fired module sampling major loop adopts a reference signal to compare with it, and exports sampled signal to filter module during alternating voltage zero-crossing point in major loop; Filter module is filtered sampled signal, input single-chip microcomputer module after the removal interference signal; Man-machine module is provided with display screen and input keyboard, and input keyboard is used to set the parameter of single-chip microcomputer module and startup, stop signal, and display screen then is used to show the interference signal that filters out and the execution result of single-chip microcomputer module; The single-chip microcomputer module according to the setting of man-machine module to the employing signal of input analyze, computing, time-delay, and isolate the module output signal to output; Output is isolated module the output signal of single-chip microcomputer is amplified to drive the execution module; Carry out module and then establish one or more utmost point switches, each utmost point switch of signal controlling of isolating module according to output closes a floodgate; In addition, the adhesive module adopts the DC operation pattern, can make to carry out that the each adhesive of each utmost point switch has good repeatability in time in the module; Keep the rated voltage that module then maintains the voltage of adhesive module and carry out module all the time, to keep attracting state.
Technique scheme adopts single-chip microcomputer that the zero passage voltage of input is carried out software analysis, calculate and driving switch contact closure, because the arithmetic speed of single-chip microcomputer is the microsecond level, can in 10 microseconds, (alternating current phases of major loop changes about 0.2 °) finish from detecting output, and the single-chip microcomputer accuracy of timekeeping is 1 microsecond (alternating current phases in loop changes about 0.02 °), so adopt the angle that technique scheme can accurately calculate needs time-delay, and can discreteness that carry out module be compensated, the alternating current phases that whole output error can be controlled at major loop changes in the scope of making an appointment with ± 3 °; And integrated level height, the peripheral circuit of single-chip microcomputer are simple, so adopt technique scheme must further not debug, install and can use.
As improvement of the technical scheme, described execution module is a vacuum contactor.
Compare with prior art, the utlity model has following beneficial effect:
Adopt Single-chip Controlling, can by the requirement of test adjust easily and accurately select phase angle, error be no more than ± 3 °; Have extremely strong interference resistance, can be by the voltage of software detection and the non-50/60Hz of shielding; Can measure the closing time of each utmost point switch by self check, and the compensation closing time makes each utmost point switch closure simultaneously.
Description of drawings
Fig. 1 is a theory diagram of the present utility model.
Embodiment
Below in conjunction with specification drawings and specific embodiments the utility model is further specified; but the scope that the utility model is protected is not limited thereto; those skilled in the art's combination technology general knowledge other variations that can expect easily, all belong to protection category of the present utility model.
As shown in Figure 1, novel phase selection control device, comprise zero cross fired module, filter module, man-machine module, single-chip microcomputer module, output isolation module, adhesive module, keep module and carry out module, module is isolated in zero cross fired module, filter module, single-chip microcomputer module, output and the execution module is linked in sequence successively, the single-chip microcomputer module also is connected with man-machine module, wherein the adhesive module with keep module all with carry out module and be connected.Wherein, described execution module is a vacuum contactor.
Its operation principle is as follows:
Voltage signal in the zero cross fired module sampling major loop adopts a reference signal to compare with it, and exports sampled signal to filter module during alternating voltage zero-crossing point in major loop; Filter module is filtered sampled signal, input single-chip microcomputer module after the removal interference signal; Man-machine module is provided with display screen and input keyboard, and input keyboard is used to set the parameter of single-chip microcomputer module and startup, stop signal, and display screen then is used to show the interference signal that filters out and the execution result of single-chip microcomputer module; The single-chip microcomputer module according to the setting of man-machine module to the employing signal of input analyze, computing, time-delay, and isolate the module output signal to output; Output is isolated module the output signal of single-chip microcomputer is amplified to drive the execution module; Carry out module and then establish one or more utmost point switches, each utmost point switch of signal controlling of isolating module according to output closes a floodgate; In addition, the adhesive module adopts the DC operation pattern, can make to carry out that the each adhesive of each utmost point switch has good repeatability in time in the module; Keep the rated voltage that module then maintains the voltage of adhesive module and carry out module all the time, to keep attracting state.
Technique scheme adopts single-chip microcomputer that the zero passage voltage of input is carried out software analysis, calculate and driving switch contact closure, because the arithmetic speed of single-chip microcomputer is the microsecond level, can in 10 microseconds, (alternating current phases of major loop changes about 0.2 °) finish from detecting output, and the single-chip microcomputer accuracy of timekeeping is 1 microsecond (alternating current phases in loop changes about 0.02 °), so adopt the angle that technique scheme can accurately calculate needs time-delay, and can discreteness that carry out module be compensated, the alternating current phases that whole output error can be controlled at major loop changes in the scope of making an appointment with ± 3 °; And integrated level height, the peripheral circuit of single-chip microcomputer are simple, so adopt technique scheme must further not debug, install and can use.
Claims (2)
1, novel phase selection control device, it is characterized in that: comprise zero cross fired module, filter module, man-machine module, single-chip microcomputer module, output isolation module, adhesive module, keep module and carry out module, module is isolated in zero cross fired module, filter module, single-chip microcomputer module, output and the execution module is linked in sequence successively, the single-chip microcomputer module also is connected with man-machine module, wherein the adhesive module with keep module all with carry out module and be connected.
2, novel phase selection control device according to claim 1, it is characterized in that: described execution module is a vacuum contactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202057998U CN201348954Y (en) | 2008-12-23 | 2008-12-23 | Novel phase selection closing control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202057998U CN201348954Y (en) | 2008-12-23 | 2008-12-23 | Novel phase selection closing control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201348954Y true CN201348954Y (en) | 2009-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202057998U Expired - Fee Related CN201348954Y (en) | 2008-12-23 | 2008-12-23 | Novel phase selection closing control device |
Country Status (1)
| Country | Link |
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| CN (1) | CN201348954Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103149865A (en) * | 2013-03-13 | 2013-06-12 | 绍兴电力局 | High-precision phase-selection control device |
| CN103630795A (en) * | 2013-12-12 | 2014-03-12 | 公安部沈阳消防研究所 | Quantitative simulation generation and acquisition unit for electric short-circuit faults |
| CN107966927A (en) * | 2017-11-20 | 2018-04-27 | 中电普瑞电力工程有限公司 | A kind of contactless circuit closing device for being precisely controlled phase |
-
2008
- 2008-12-23 CN CNU2008202057998U patent/CN201348954Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103149865A (en) * | 2013-03-13 | 2013-06-12 | 绍兴电力局 | High-precision phase-selection control device |
| CN103630795A (en) * | 2013-12-12 | 2014-03-12 | 公安部沈阳消防研究所 | Quantitative simulation generation and acquisition unit for electric short-circuit faults |
| CN103630795B (en) * | 2013-12-12 | 2016-06-29 | 公安部沈阳消防研究所 | Electric short circuit fault quantitative simulation generation harvester |
| CN107966927A (en) * | 2017-11-20 | 2018-04-27 | 中电普瑞电力工程有限公司 | A kind of contactless circuit closing device for being precisely controlled phase |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhang Wei Document name: Notification of patent rights granted to utility models and formalities for registration |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091118 Termination date: 20151223 |
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| EXPY | Termination of patent right or utility model |