CN103728485B - Synchronous voltage detection device with protection function - Google Patents
Synchronous voltage detection device with protection function Download PDFInfo
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- CN103728485B CN103728485B CN201310434891.7A CN201310434891A CN103728485B CN 103728485 B CN103728485 B CN 103728485B CN 201310434891 A CN201310434891 A CN 201310434891A CN 103728485 B CN103728485 B CN 103728485B
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Abstract
The invention relates to a synchronous voltage detection device with a protection function. The under voltage faults can be detected while the voltages are detected, and therefore the synchronous voltage detection device can have the protection function. The synchronous voltage detection device is mainly composed of an input terminal strip, a transformer module, a voltage detection module, a voltage conversion module, an under voltage detection module and an output signal terminal strip. Three phases of alternating voltages are reduced through the transformer module, voltage signals within the standard range are obtained through the voltage detection module, and the under voltage detection module can detect the under voltage faults of the alternating voltages. Compared with the prior art, the synchronous voltage detection device has the advantages of being simple in structure, easy to obtain and easy to install and detach, being capable of detecting the under voltage faults while synchronously detecting the alternating voltages, and being beneficial for improving stability of a system.
Description
Technical field
The present invention relates to synchronizing voltage detection means is and in particular to having in a kind of control system for AC-AC frequency converter
The synchronizing voltage detection means of defencive function, can detect under-voltage fault while synchronous detecting alternating voltage, improve system
The stability run.
Background technology
AC-AC frequency converter is widely used in the high power AC motor speed adjusting such as mine hoist, blower fan, load of the pumps
Transmission field, the stability of the control system of AC-AC frequency converter plays vital effect, in order to solve in control system
Under-voltage fault problem, the present invention provides the synchronizing voltage inspection with defencive function in a kind of control system for AC-AC frequency converter
Survey device, under-voltage fault can be detected while synchronous detecting alternating voltage, improve the stability of system operation.
Content of the invention
The present invention relates to a kind of synchronizing voltage detection means with defencive function, in synchronous detecting alternating voltage, such as
When under-voltage fault in fruit alternating voltage, this device exports fault-signal, is sent to central processing unit, rapid handling failure, rises
To defencive function.
A kind of synchronizing voltage detection means with defencive function being provided according to the present invention, comprising: Input terminal block, change
Depressor module, voltage detection module, voltage transformation module, under-voltage detection module, output signal terminal row；
Input terminal block, transformer module, voltage detection module, output signal terminal row are sequentially connected, Input terminal block
It is additionally coupled to voltage transformation module, under-voltage detection module, voltage transformation module connects to voltage detection module, under-voltage detection mould
Block, voltage detection module connects to under-voltage detection module, and under-voltage detection module connects to output signal terminal row.
Preferably, transformer module, for reducing exchange input side voltage magnitude, and plays the effect of isolation voltage.
Preferably, voltage transformation module, for input first voltage is converted to second voltage, as in analog circuit
Supply voltage.
Preferably, voltage detection module, for trying to achieve two-phase voltage difference first, further according to different input voltage etc.
Level, selects different switches, adjusts the amplitude of output voltage, obtains output voltage u.
Preferably, under-voltage detection module, the under-voltage fault occurring for testing circuit.
Preferably, 1., 2., 3., 4., 5. Input terminal block includes input terminal, and wherein, input terminal is 1., 2., 3. respectively
Access three-phase alternating voltage ua, ub and uc of detection, 4. and 5. terminal is respectively connected to ± 24v DC source.
Preferably, lead-out terminal row include lead-out terminal 1., 2., 3., 4., 5., 6., 7., wherein, lead-out terminal 1., 2.,
3. on the occasion of uab, ubc and uca, 4., 5., 6. lead-out terminal exports detection to the three-phase alternating current line voltage exporting detection respectively respectively
Three-phase alternating current line voltage negative valueWith7. lead-out terminal exports under-voltage fault signal.
Compared with prior art, the invention has the advantage that structure is simple, it is easy to accomplish it is easy to install and dismounting, in synchronization
Under-voltage fault can be detected while detection alternating voltage, be conducive to the stability of raising system.
Brief description
The detailed description with reference to the following drawings, non-limiting example made by reading, the further feature of the present invention,
Objects and advantages will become more apparent upon:
Fig. 1 is the structure principle chart of synchronizing voltage detection means；
Fig. 2 is the electrical schematic diagram of transformer module；
Fig. 3 is the electrical schematic diagram of voltage transformation module；
Fig. 4 is the electrical schematic diagram of voltage detection module；
The electrical schematic diagram that Fig. 5 exports for generating positive and negative voltage；
Fig. 6 is the electrical schematic diagram of under-voltage detection module.
Specific embodiment
With reference to specific embodiment, the present invention is described in detail.Following examples will be helpful to the technology of this area
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill to this area
For personnel, without departing from the inventive concept of the premise, some deformation can also be made and improve.These broadly fall into the present invention
Protection domain.
The present invention relates to a kind of synchronizing voltage detection means with defencive function, in synchronous detecting alternating voltage, such as
When under-voltage fault in fruit DC source, this device exports fault-signal, is sent to central processing unit, rapid handling failure, rises
To defencive function.
As shown in figure 1, synchronizing voltage detection means is mainly by Input terminal block, transformer module, voltage detection module, electricity
Pressure modular converter, under-voltage detection module, output signal terminal row are constituted.The input terminal of Input terminal block is 1., 2., 3. connect respectively
Enter three-phase alternating voltage ua, ub and uc of detection, 4. and 5. terminal is respectively connected to ± 24v DC source.Lead-out terminal row's is defeated
Go out terminal 1., 2., 3. export the three-phase alternating current line voltage of detection respectively on the occasion of uab, ubc and uca, lead-out terminal is 4., 5., 6. divide
Do not export the three-phase alternating current line voltage negative value of detectionWith7. lead-out terminal exports under-voltage fault signal.Should
Synchronizing voltage detection means has Input terminal block and lead-out terminal row, can be permissible as the submodule of control system
According to system needs, mount and dismount.
As shown in Fig. 2 the exchange input range of synchronizing voltage detection means is 100v～500v, transformer module reduces to be handed over
Stream input side voltage magnitude, and play the effect of isolation voltage.As shown in figure 3, voltage transformation module, ± 24v direct current will be inputted
Voltage conversion is ± 15v voltage, as the supply voltage in analog circuit.Wherein p24, m, n24 represent+24v, earth point respectively
With -24v.
As shown in figure 4, voltage detection module is made up of the analog circuit that amplifier amplifier is built, first by subtractor circuit,
Try to achieve two-phase voltage difference, then pass through voltage ratio amplifier, according to different input voltage grades, select different switches,
Adjust the amplitude of output voltage, obtain output voltage u.Because output voltage grade is different, can there is s1, s2, s3 and s4 tetra-
Switch corresponds to 500v, 400v, 230v and tri- different electric pressures of 100v respectively, obtains output voltage u.As shown in figure 5, it is defeated
Go out voltage u again by phase inverter try to achieve output voltage on the occasion of uab, uac and uca and negative valueWithLead to respectively
Cross lead-out terminal row's output, transmit and be used for system operations into central processing unit.
As shown in fig. 6, being under-voltage detection module, adjusting resistance r2 and can be set using comparator comp different under-voltage
Threshold value, the under-voltage fault occurring in order to testing circuit, by lv detection chip comparison voltage, when under-voltage fault, red light
H1 lights, and lv output jumps to low level from high level, leads to amber light h2 to extinguish, Ausgang is fault-signal, by outfan
7. son exports.
Above the specific embodiment of the present invention is described.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make various modifications or modification within the scope of the claims, this not shadow
Ring the flesh and blood of the present invention.
Claims (1)
1. a kind of synchronizing voltage detection means with defencive function is it is characterised in that include: Input terminal block, transformator mould
Block, voltage detection module, voltage transformation module, under-voltage detection module, output signal terminal row；
Input terminal block, transformer module, voltage detection module, output signal terminal row are sequentially connected, and Input terminal block also connects
It is connected to voltage transformation module, under-voltage detection module, voltage transformation module connects to voltage detection module, under-voltage detection module, electricity
Pressure detection module connects to under-voltage detection module, and under-voltage detection module connects to output signal terminal row；
Transformer module, for reducing exchange input side voltage magnitude, and plays the effect of isolation voltage；
Voltage transformation module, for input first voltage is converted to second voltage, as the supply voltage in analog circuit；
Voltage detection module, for trying to achieve two-phase voltage difference first, further according to different input voltage grades, selects different
Switch, adjusts the amplitude of output voltage, obtains output voltage u；
Under-voltage detection module, the under-voltage fault occurring for testing circuit；
1., 2., 3., 4., 5. Input terminal block includes input terminal, and wherein, 1., 2., 3. input terminal is respectively connected to detection
Three-phase alternating voltage ua, ub and uc, 4. and 5. terminal is respectively connected to ± 24v DC source；
1., 2., 3., 4., 5., 6., 7. lead-out terminal row includes lead-out terminal, and wherein, lead-out terminal is 1., 2., 3. export respectively
The three-phase alternating current line voltage of detection on the occasion of uab, ubc and uca, lead-out terminal 4., 5., 6. export the three-phase alternating current line of detection respectively
Voltage negative valueWith7. lead-out terminal exports under-voltage fault signal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310434891.7A CN103728485B (en) | 2013-09-11 | 2013-09-11 | Synchronous voltage detection device with protection function |
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| CN201310434891.7A CN103728485B (en) | 2013-09-11 | 2013-09-11 | Synchronous voltage detection device with protection function |
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| CN103728485A CN103728485A (en) | 2014-04-16 |
| CN103728485B true CN103728485B (en) | 2017-01-18 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108717142A (en) * | 2018-05-31 | 2018-10-30 | 南京协澳智能控制系统有限公司 | A kind of digital synchronous inspection relay with phase angle compensation function |
| CN110850150A (en) * | 2019-10-23 | 2020-02-28 | 深圳安时达电子服务有限公司 | Voltage detection device, voltage detection system and voltage detection method |
| CN113314175B (en) * | 2021-05-25 | 2023-11-21 | 海光信息技术股份有限公司 | Write auxiliary device, working method thereof and memory |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2533472Y (en) * | 2001-12-14 | 2003-01-29 | 艾默生网络能源有限公司 | AC three-phase voltage monitor |
| CN201199263Y (en) * | 2008-01-09 | 2009-02-25 | 上海市电力公司市东供电公司 | Test device for load-matching monitoring instrument |
| CN201285409Y (en) * | 2008-08-07 | 2009-08-05 | 黑龙江斯福电气有限公司 | Phase voltage detection circuit |
| CN101694596A (en) * | 2009-10-29 | 2010-04-14 | 深圳华为通信技术有限公司 | Power supply chip of data card and data card |
| CN201656565U (en) * | 2010-04-12 | 2010-11-24 | 郑州众智电子设备有限公司 | Voltage detecting module |
| JP2011047849A (en) * | 2009-08-28 | 2011-03-10 | Panasonic Corp | Power supply device |
| CN201928080U (en) * | 2011-01-21 | 2011-08-10 | 北京津宇嘉信科技开发有限公司 | Power supply detecting and switching device |
| CN202994892U (en) * | 2013-01-15 | 2013-06-12 | 福州福发发电设备有限公司 | Power supply failure detection unit |
-
2013
- 2013-09-11 CN CN201310434891.7A patent/CN103728485B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2533472Y (en) * | 2001-12-14 | 2003-01-29 | 艾默生网络能源有限公司 | AC three-phase voltage monitor |
| CN201199263Y (en) * | 2008-01-09 | 2009-02-25 | 上海市电力公司市东供电公司 | Test device for load-matching monitoring instrument |
| CN201285409Y (en) * | 2008-08-07 | 2009-08-05 | 黑龙江斯福电气有限公司 | Phase voltage detection circuit |
| JP2011047849A (en) * | 2009-08-28 | 2011-03-10 | Panasonic Corp | Power supply device |
| CN101694596A (en) * | 2009-10-29 | 2010-04-14 | 深圳华为通信技术有限公司 | Power supply chip of data card and data card |
| CN201656565U (en) * | 2010-04-12 | 2010-11-24 | 郑州众智电子设备有限公司 | Voltage detecting module |
| CN201928080U (en) * | 2011-01-21 | 2011-08-10 | 北京津宇嘉信科技开发有限公司 | Power supply detecting and switching device |
| CN202994892U (en) * | 2013-01-15 | 2013-06-12 | 福州福发发电设备有限公司 | Power supply failure detection unit |
Non-Patent Citations (1)
| Title |
|---|
| 基于ＤＳＰ的静电除尘三相电源调压系统研制;熊国喜等;《通信电源技术》;20110125;第28卷(第1期);正文第2页第2.2.1部分以及图3、4 * |
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Effective date of registration: 20171128 Address after: 223001 science and Technology Industrial Park, Jiangsu, Huaian science and technology road, No. 18 Patentee after: North Jiangsu Institute of Shanghai Jiao Tong University Address before: 800 Dongchuan Road, Shanghai, No. 200240 Patentee before: Shanghai Jiao Tong University |