CN209656773U - One kind having voltage dip sensitive equipment device for monitoring running state - Google Patents
One kind having voltage dip sensitive equipment device for monitoring running state Download PDFInfo
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- CN209656773U CN209656773U CN201920078475.0U CN201920078475U CN209656773U CN 209656773 U CN209656773 U CN 209656773U CN 201920078475 U CN201920078475 U CN 201920078475U CN 209656773 U CN209656773 U CN 209656773U
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Abstract
This application involves one kind to have voltage dip sensitive equipment device for monitoring running state, collected voltage value is passed to the first electronic switch by information acquisition module, second electronic switch, third electronic switch, OR circuit receives the first electronic switch, second electronic switch, when the electric current of at least one sending of third electronic switch, illustrate that primary voltage occur temporarily drops event, timer carries out timing, NAND gate circuit is not receiving the first electronic switch, second electronic switch, when the electric current of third electronic switch, temporarily the event of dropping terminates account for voltage, timer carries out timing again.Event is temporarily dropped by the first electronic switch, the second electronic switch, third electronic switch monitoring voltage, and by the timer record time, then carries out the output of data by A/D conversion module, digital signal processor, PC machine.So as to realize and carry out time monitoring and identification to sensitive equipment voltage dip event according to the power grid three-phase voltage information monitored.
Description
Technical field
The utility model belongs to Power Quality Monitoring Technology field, more particularly to a kind of with voltage dip sensitive equipment fortune
Row state monitoring device.
Background technique
With the answering in power grid, industrial production and resident living extensively such as power electronic technique, automatic control technology
With, it is more and more to the load that short time voltage change is sensitive, such as variable-frequency governor, programmable logic controller (PLC), department of computer science
A large amount of uses of the sensitive loads such as system and various automatic production lines, to power quality, more stringent requirements are proposed.Electricity
It is to influence power quality problem the most serious that the temporary drop of pressure, which is recognized, it has also become the most important electricity that European and American developed countries etc. face
Energy quality problems, in China, industry and developed area, the influence of the problem are also more and more prominent.Voltage dip can cause to become
The decline of frequency governor DC capacitor voltage triggers low-voltage or overcurrent protection movement, interrupts production process；Cause may be programmed
The failures such as logic controller output order disorder even shutdown；Cause Computing error, " seemingly-dead " even dead halt etc.
Situation causes loss of data etc..But sensitive equipment also possesses voltage dip certain tolerance, it is this resistance in order to describe
By ability, voltage-tolerance curve comes into being, and can find out the equipment by the voltage-tolerance curve of certain equipment with being apparent
Operating status under different voltages temporarily drop event.It is all selectively filled at many points of common connection of China's power grid at present
If equipment for monitoring power quality, in order to understand fully the pests occurrence rule and characteristic of voltage dip event, so as to preferably right
It is targetedly administered.But the function of existing monitoring device is confined to the record to grid voltage waveform data, nothing
Method is analyzed and processed the data being recorded, and then obtains under voltage dip event different type sensitive equipment at the monitoring point
Running state information or the monitoring point at affected device size values, to be provided for user more real-time specific
Voltage dip influences information.
Utility model content
Regarding to the issue above with defect, the utility model proposes one kind to have voltage dip sensitive equipment running state monitoring
Device, it is intended that according to the power grid three-phase voltage information monitored, when realizing to the progress of sensitive equipment voltage dip event
Between monitor and identification device.
To achieve the above object, the technical scheme adopted by the utility model is that:
One kind have voltage dip sensitive equipment device for monitoring running state, comprising: power module, information acquisition module,
Monitoring alarm circuit module, A/D conversion module, digital signal processor and PC machine；
The monitoring alarm circuit module includes:
First electronic switch is exported for receiving the collected A phase voltage of information acquisition module, and when being higher than particular value
Electric current；
Second electronic switch is exported for receiving the collected B phase voltage of information acquisition module, and when being higher than particular value
Electric current；
Third electronic switch is exported for receiving the collected C phase voltage of information acquisition module, and when being higher than particular value
Electric current；
NAND gate circuit is separately connected with the first electronic switch, the second electronic switch, third electronic switch, is not being received
To the first electronic switch, the second electronic switch, third electronic switch electric current when, export electric current；
OR circuit is separately connected with the first electronic switch, the second electronic switch, third electronic switch, is receiving
When the electric current that one electronic switch, the second electronic switch, at least one in third electronic switch issue, electric current is exported；
Timer is separately connected with the NAND gate circuit and the OR circuit, is receiving AND gate circuit and/or door
Timing is carried out when the output electric current of circuit；
The information acquisition module is used to acquire the voltage signal of power grid, information acquisition module and monitoring alarm circuit mould
Block, A/D conversion module, digital signal processor and PC machine are sequentially connected.
Preferably, the utility model has voltage dip sensitive equipment device for monitoring running state, and the PC machine is also wrapped
Include input equipment, display and print module.
Preferably, the utility model has voltage dip sensitive equipment device for monitoring running state, the input equipment
For keyboard and mouse.
Preferably, the utility model has voltage dip sensitive equipment device for monitoring running state, the information collection
The input terminal of module is connected with voltage transformer, and the voltage signal measured is passed to information acquisition module by voltage transformer.
Preferably, the utility model has voltage dip sensitive equipment device for monitoring running state, and the PC machine is also logical
Communication module is crossed to connect with voltage transformer, monitoring alarm circuit module, A/D conversion module and digital signal processor.
Preferably, the utility model has voltage dip sensitive equipment device for monitoring running state, the communication module
For wire cable communication module.
The utility model has the beneficial effects that:
The utility model has voltage dip sensitive equipment device for monitoring running state, and information acquisition module will collect
Voltage value pass to the first electronic switch, the second electronic switch, third electronic switch, OR circuit receives the first electronic cutting
Pass, the second electronic switch, third electronic switch at least one issue electric current when, illustrate that primary voltage occur temporarily drops event, count
When device carry out timing, NAND gate circuit is in the electric current for not receiving the first electronic switch, the second electronic switch, third electronic switch
When, temporarily the event of dropping terminates account for voltage, and timer carries out timing again.Pass through the first electronic switch, the second electronic switch, third electricity
Event temporarily drops in sub switch monitoring voltage, and by the timer record time, then by A/D conversion module, digital signal processor, PC
The output of machine progress data.So as to realize to sensitive equipment voltage dip according to the power grid three-phase voltage information monitored
Event carries out time monitoring and identification.
Detailed description of the invention
Fig. 1 is the structural schematic diagram with voltage dip sensitive equipment device for monitoring running state.
1 power module；
2 information acquisition modules；
3 monitoring alarm circuit modules；
4 A/D conversion modules；
5 digital signal processors；
6 PC machine；
7 input equipments；
8 displays；
9 communication modules；
10 print modules；
11 voltage transformers；
20 exterior power supply plants；
31 first electronic switches；
32 second electronic switches；
33 third electronic switches；
34 NAND gate circuits；
35 OR circuits；
36 timers.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.
In the description of the present application, it is to be understood that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description the application and simplifies description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
The limitation of the application protection scope.In addition, term " first ", " second " etc. are used for description purposes only, and should not be understood as indicating
Or it implies relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " second " etc. are defined as a result,
Feature can explicitly or implicitly include one or more of the features.In the description of the invention, unless separately
It is described, the meaning of " plurality " is two or more.
In the description of the present application, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in this application.
It is described in detail the technical solution of the application below with reference to the accompanying drawings and in conjunction with the embodiments.
Embodiment
As shown in Figure 1, the present embodiment provides one kind to have voltage dip sensitive equipment device for monitoring running state, including electricity
It is source module 1, information acquisition module 2, monitoring alarm circuit module 3, A/D conversion module 4, digital signal processor 5, PC machine 6, defeated
Enter equipment 7, display 8, communication module 9, print module 10 (connecting with printer)；
The monitoring alarm circuit module 3 includes:
First electronic switch 31, for receiving the collected A phase voltage of information acquisition module 2, and when being higher than particular value
Export electric current；
Second electronic switch 32, for receiving the collected B phase voltage of information acquisition module 2, and when being higher than particular value
Export electric current；
Third electronic switch 33, for receiving the collected C phase voltage of information acquisition module 2, and when being higher than particular value
Export electric current；
NAND gate circuit 34 is separately connected with the first electronic switch 31, the second electronic switch 32, third electronic switch 33,
When not receiving the electric current of the first electronic switch 31, the second electronic switch 32, third electronic switch 33, electric current is exported；
OR circuit 35 is separately connected, In with the first electronic switch 31, the second electronic switch 32, third electronic switch 33
When receiving the electric current that the first electronic switch 31, the second electronic switch 32, at least one in third electronic switch 33 issue, output
Electric current；
Timer 36 is separately connected with NAND gate circuit 34 and OR circuit 35, is receiving AND gate circuit 34 and/or door
Timing is carried out when the output electric current of circuit 35.
Above-mentioned each module and device are hardware, and the software being related to is existing software, are not related to the improvement of software.
A phase voltage, B phase voltage, C phase voltage are respectively the voltage of A, B, C phase of three-phase circuit.
The input terminal of the information acquisition module 2 is connected with voltage transformer 11, the electricity that voltage transformer 11 will measure
Pressure signal passes to information acquisition module 2, information acquisition module 2 and monitoring alarm circuit module 3, A/D conversion module 4, number
Signal processor 5 and PC machine 6 are sequentially connected, information acquisition module 2 by collected voltage value pass to the first electronic switch 31,
Second electronic switch 32, third electronic switch 33, OR circuit 35 receive the first electronic switch 31, the second electronic switch 32,
When the electric current of at least one sending of third electronic switch 33, illustrating that primary voltage occur temporarily drops event, timer 36 carries out timing,
NAND gate circuit 34 is said when not receiving the electric current of the first electronic switch 31, the second electronic switch 32, third electronic switch 33
Temporarily the event of dropping terminates prescribed voltage, and timer 36 carries out timing again.Pass through the first electronic switch 31, the second electronic switch 32, third
Event temporarily drops in 33 monitoring voltage of electronic switch, and records the time by timer 36, then by A/D conversion module 4, digital signal
Manage device 5, PC machine 6 carries out the output of data.
First electronic switch 31, the second electronic switch 32, third electronic switch 33 can be with monitoring point voltage ratings 90%
For particular value.
PC machine 6 is connected with display 8, print module 10 and communication module 9 respectively, and wherein display 8 can intuitively be shown
Show the information that PC machine 6 generates, print module 10 is connected with external printer, can be by sensitive equipment operating status or the monitoring point
The recognition result of affected device scale message is printed as reporting, communication module 9 is then according to the instruction of PC machine 6 and voltage transformer
11, data processing module, A/D conversion module 4, digital signal processor 5 are communicated, the input of PC machine 6 and input equipment 7
(keyboard, mouse) is connected, and can input corresponding command information by input equipment 7, and power module 1 is by exterior power supply plant 20
Voltage processing be voltage signal suitable for modules, provide electric energy for it.
The PC machine 6 also passes through communication module 9 and voltage transformer 11, monitoring alarm circuit module 3, A/D conversion module 4
It is connected with digital signal processor 5.
The communication module 9 is wire cable communication module, is also possible to various wireless communication modules.
This embodiment is only the preferable specific embodiment of the utility model, but the protection scope of the utility model not office
It is limited to this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in
Change or replacement should be covered within the scope of the utility model.The utility model spirit and scope are not being departed from
Under the premise of, the utility model also has further improvement, it makes improvements still in the scope of the claimed invention, because
This, the protection scope of the utility model should be subject to the protection scope in claims.
Claims (6)
1. one kind has voltage dip sensitive equipment device for monitoring running state characterized by comprising power module (1), letter
Cease acquisition module (2), monitoring alarm circuit module (3), A/D conversion module (4), digital signal processor (5) and PC machine (6)；
The monitoring alarm circuit module (3) includes:
First electronic switch (31), for receiving the collected A phase voltage of information acquisition module (2), and when being higher than particular value
Export electric current；
Second electronic switch (32), for receiving the collected B phase voltage of information acquisition module (2), and when being higher than particular value
Export electric current；
Third electronic switch (33), for receiving the collected C phase voltage of information acquisition module (2), and when being higher than particular value
Export electric current；
NAND gate circuit (34) connects respectively with the first electronic switch (31), the second electronic switch (32), third electronic switch (33)
It connects, when not receiving the electric current of the first electronic switch (31), the second electronic switch (32), third electronic switch (33), output
Electric current；
OR circuit (35) connects respectively with the first electronic switch (31), the second electronic switch (32), third electronic switch (33)
It connects, is issued receiving the first electronic switch (31), the second electronic switch (32), at least one in third electronic switch (33)
When electric current, electric current is exported；
Timer (36) is separately connected with the NAND gate circuit (34) and the OR circuit (35), is being received and door electricity
Timing is carried out when the output electric current of road (34) and OR circuit (35)；
The information acquisition module (2) is used to acquire the voltage signal of power grid, information acquisition module (2) and monitoring alarm circuit mould
Block (3), A/D conversion module (4), digital signal processor (5) and PC machine (6) are sequentially connected.
2. according to claim 1 have voltage dip sensitive equipment device for monitoring running state, which is characterized in that described
PC machine (6) further includes input equipment (7), display (8) and print module (10).
3. according to claim 2 have voltage dip sensitive equipment device for monitoring running state, which is characterized in that described
Input equipment (7) is keyboard and mouse.
4. according to claim 1 have voltage dip sensitive equipment device for monitoring running state, which is characterized in that described
The input terminal of information acquisition module (2) is connected with voltage transformer (11), the voltage signal that voltage transformer (11) will measure
Pass to information acquisition module (2).
5. according to claim 4 have voltage dip sensitive equipment device for monitoring running state, which is characterized in that described
PC machine (6) also by communication module (9) and voltage transformer (11), monitoring alarm circuit module (3), A/D conversion module (4) and
Digital signal processor (5) connection.
6. according to claim 5 have voltage dip sensitive equipment device for monitoring running state, which is characterized in that described
Communication module (9) is wire cable communication module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920078475.0U CN209656773U (en) | 2019-01-17 | 2019-01-17 | One kind having voltage dip sensitive equipment device for monitoring running state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920078475.0U CN209656773U (en) | 2019-01-17 | 2019-01-17 | One kind having voltage dip sensitive equipment device for monitoring running state |
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| Publication Number | Publication Date |
|---|---|
| CN209656773U true CN209656773U (en) | 2019-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920078475.0U Active CN209656773U (en) | 2019-01-17 | 2019-01-17 | One kind having voltage dip sensitive equipment device for monitoring running state |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113447723A (en) * | 2021-07-01 | 2021-09-28 | 威海新北洋技术服务有限公司 | Voltage detection device and printing equipment |
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2019
- 2019-01-17 CN CN201920078475.0U patent/CN209656773U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113447723A (en) * | 2021-07-01 | 2021-09-28 | 威海新北洋技术服务有限公司 | Voltage detection device and printing equipment |
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Effective date of registration: 20200119 Address after: 450000 No. 85 South Songshan Road, 27 District, Henan, Zhengzhou Co-patentee after: State Grid Henan Electric Power Company Patentee after: Electric Power Research Institute, State Grid Henan Electric Power Company Co-patentee after: State Grid Co., Ltd. Address before: 450000 No. 85 South Songshan Road, 27 District, Henan, Zhengzhou Co-patentee before: State Grid Henan Electric Power Company Patentee before: Electric Power Research Institute, State Grid Henan Electric Power Company Co-patentee before: North China Electric Power University Co-patentee before: State Grid Co., Ltd. |