CN206684223U - A kind of line voltage monitoring device - Google Patents
A kind of line voltage monitoring device Download PDFInfo
- Publication number
- CN206684223U CN206684223U CN201720365986.1U CN201720365986U CN206684223U CN 206684223 U CN206684223 U CN 206684223U CN 201720365986 U CN201720365986 U CN 201720365986U CN 206684223 U CN206684223 U CN 206684223U
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- plc
- voltage signal
- signal acquisition
- monitoring
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- 230000001702 transmitter Effects 0.000 claims description 10
- 238000009434 installation Methods 0.000 abstract description 5
- 230000001052 transient Effects 0.000 abstract description 5
- 210000003205 Muscles Anatomy 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model provides a kind of line voltage monitoring device, including voltage signal acquisition module, PLC module, monitoring module, bus bar behind the voltage signal acquisition module connection step down side master switch, the PLC module connects monitoring module using its MPI/profibus DP port by PC serial interface cables, installation PLC analog input units inside the PLC module, the PLC analog input units connect voltage signal acquisition module, the voltage signal acquisition module transmits the voltage signal of collection to monitoring module by PLC module, the monitoring module includes processor unit and memory cell.Line voltage monitoring device described in the utility model can monitor sudden strain of a muscle jump and the transient fluctuation of power network any time, and minimum can monitor 50 milliseconds of transient fluctuation；Installation cost is low, is designed without power specialty producer professional；Monitoring historical data can export as data file, and inquiry is convenient.
Description
Technical field
The utility model belongs to voltage monitoring equipment technical field, more particularly, to a kind of line voltage monitoring device.
Background technology
In modern enterprise, the requirement in many automation equipment runnings to power grid quality is higher.Such as tempering blower fan
And the failure such as equipment stop jumping such as coating wire shielding power supply, because equipment is in continuous production, can be caused after equipment failure
The batch of glass product is scrapped, and loss is very big.Startup and annealing furnace heating heating due to tempering high-power blower (315KW)
When electric current it is larger, such as control it is improper line voltage can be caused to decline, due to the mid frequency sputtering power supply in filming equipment, molecular pump etc.
The fluctuation occurred to line voltage is more sensitive, and equipment stop jumping can be caused when fluctuating.So as to cause certain damage to enterprise
Lose.Under such a situation, when equipment is due to unit exception caused by power network problem, monitoring and record to electric network source, root
The reason for according to record analysis unit exception, work out Improving Measurements to exist problem targetedly improve it is particularly important.
The shortcomings that in existing close scheme and its technology：
Currently for line voltage supervising device generally using power monitoring background system to the voltage of power network, electric current,
Power etc. is monitored in real time, and this background system must be designed by special Electrical Installing Company, and monitoring parameter is more, professional
It is relatively strong and costly.
The minimum sampling period of electric power background system can only achieve 2-3 minutes once.Historical record curve can only record always
The power consumption parameter of body.The sudden strain of a muscle jump occurred for power network and transient fluctuation are because its time of occurrence is extremely short, and background system is due to sampling
Cycle is longer, can not catch such a power network fluctuation and dodge the defects of jumping.
The content of the invention
In view of this, the utility model is directed to a kind of line voltage monitoring device, to solve current technology sampling week
Phase is grown, and is jumped for the moment electrical network flashing within 1 second of power network appearance and fluctuation can not record.Can not be equipment occur it is abnormal when pair
Foundation, the high situation of cost of equipment are provided in the voltage pulsation analysis of power network.
To reach above-mentioned purpose, what the technical solution of the utility model was realized in：
A kind of line voltage monitoring device, including voltage signal acquisition module, PLC module, monitoring module, the voltage letter
Bus bar behind number acquisition module connection step down side master switch, the PLC module utilize its MPI/profibus DP
Port connects monitoring module by PC serial interface cables, and PLC analog input units, the PLC moulds are installed inside the PLC module
Analog quantity input block connects voltage signal acquisition module, and the voltage signal of collection is passed through PLC by the voltage signal acquisition module
Module transfer to monitoring module, the monitoring module includes processor unit and memory cell.
Further, the voltage signal acquisition module is three-phase alternating current pressure transmitter.
Further, the model HAA-T2 of the three-phase alternating current pressure transmitter.
Further, the PLC module model Siemens CPU314PLC.
Further, the PLC analog input units model SM331.
Relative to prior art, line voltage monitoring device described in the utility model has the advantage that：
Line voltage monitoring device described in the utility model can monitor sudden strain of a muscle jump and the transient fluctuation of power network any time, most
The small transient fluctuation that can monitor 50 milliseconds；Installation cost is low, is designed without power specialty producer professional；Monitor historical data
Data file can be exported as, inquiry is convenient；It is simple to operate, it can be more convenient by historical data, efficiently analyze power network
Voltage condition.
Brief description of the drawings
Form a part of accompanying drawing of the present utility model to be used for providing further understanding to of the present utility model, this practicality is new
The schematic description and description of type is used to explain the utility model, does not form to improper restriction of the present utility model.
In accompanying drawing：
Fig. 1 is the line voltage monitoring device principle schematic described in the utility model embodiment；
Fig. 2 is the three-phase alternating current pressure transmitter principle schematic described in the utility model embodiment.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the utility model can
To be mutually combined.
In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ",
The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of description the utility model and simplifies description, rather than instruction
Or imply that signified device or element must have specific orientation, with specific azimuth configuration and operation, therefore be not understood that
For to limitation of the present utility model.In addition, term " first ", " second " etc. are only used for describing purpose, and it is not intended that instruction
Or imply relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, " first ", " second " etc. are defined
Feature can express or implicitly include one or more this feature.In description of the present utility model, unless separately
It is described, " multiple " are meant that two or more.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, on being understood by concrete condition
State concrete meaning of the term in the utility model.
Describe the utility model in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As shown in figure 1, a kind of line voltage monitoring device, including voltage signal acquisition module, PLC module, monitoring module,
Bus bar behind the voltage signal acquisition module connection step down side master switch, the PLC module utilize its MPI/
Profibus DP ports connect monitoring module by PC serial interface cables, and PLC analog input lists are installed inside the PLC module
Member, the PLC analog input units connect voltage signal acquisition module, and the voltage signal acquisition module is by the voltage of collection
Signal is transmitted to monitoring module by PLC module, and the monitoring module includes processor unit and memory cell, the monitoring mould
Block can use computer to replace.Voltage signal acquisition module mainly uses HAA-T2 type three-phase alternating current pressure transmitters, input
Three phase mains is connected, three-phase 380V alternating voltages are converted into direct current 10V voltages, and output end direct current by three-phase voltage transmitter
Corresponding fluctuation also occurs with the fluctuation of input terminal voltage in the size of pressure 10V voltages.Monitoring module installation monitoring PLC module
The software plc analyzer of built-in variable, this software are to monitor PLC module memory by PMI/profibus DP networks
Interior input quantity, output quantity and intermediate variable.And the change of these variables is shown on monitoring module in graph form
Come.By this software to real-time monitoring of the voltage signal acquisition module to three-phase power grid voltage, and convert thereof into 0-10V simulations
Amount signal is inputted to PLC analog input units, can very easily inquire about the history curve of any time voltage pulsation.
As shown in Fig. 2 the voltage signal acquisition module is three-phase alternating current pressure transmitter.The three-phase alternating current buckling
Send the model HAA-T2 of device.UA, UB and UC are the three-phase 380V AC power to be monitored, and the output of A, B, C three-phase is direct current
10V output signals.
Voltage transmitter major parameter：
Input voltage：0-500VAC
Output voltage：0-10VDC
Supply voltage：+24V
Incoming frequency scope：25HZ-5KHZ
Response time：≤350ms
Wherein, the PLC module model Siemens CPU314PLC.Installation PLC analog quantitys are defeated inside the PLC module
Enter unit, the PLC analog input units are PLC Analog input mModules, and the PLC analog input units connect voltage
Signal acquisition module.The PLC analog input units model SM331.
Operation principle：
Power network three-phase 380V alternating currents use three-phase alternating current pressure transmitter by 380V voltages through voltage signal acquisition module
0-10V DC voltage DC voltages are converted into, this voltage signal is sent to the PLC analog input units to PLC module
It is interior, convert analog signals into data signal, PLC monitoring softwares again by the voltage input signal in PLC module, in software with
The form of curve shows.Show on computers.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc., the utility model should be included in
Protection domain within.
Claims (5)
- A kind of 1. line voltage monitoring device, it is characterised in that：Including voltage signal acquisition module, PLC module, monitoring module, Bus bar behind the voltage signal acquisition module connection step down side master switch, the PLC module utilize its MPI/ Profibus DP ports connect monitoring module by PC serial interface cables, and PLC analog input lists are installed inside the PLC module Member, the PLC analog input units connect voltage signal acquisition module, and the voltage signal acquisition module is by the voltage of collection Signal is transmitted to monitoring module by PLC module, and the monitoring module includes processor unit and memory cell.
- 2. line voltage monitoring device according to claim 1, it is characterised in that：The voltage signal acquisition module is three Cross streams voltage transmitter.
- 3. line voltage monitoring device according to claim 2, it is characterised in that：The three-phase alternating current pressure transmitter Model HAA-T2.
- 4. line voltage monitoring device according to claim 1, it is characterised in that：The PLC module model Siemens CPU314PLC。
- 5. line voltage monitoring device according to claim 1, it is characterised in that：The PLC analog input units type Number it is SM331.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720365986.1U CN206684223U (en) | 2017-04-06 | 2017-04-06 | A kind of line voltage monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720365986.1U CN206684223U (en) | 2017-04-06 | 2017-04-06 | A kind of line voltage monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206684223U true CN206684223U (en) | 2017-11-28 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720365986.1U Active CN206684223U (en) | 2017-04-06 | 2017-04-06 | A kind of line voltage monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206684223U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108226722A (en) * | 2017-12-19 | 2018-06-29 | 神华集团有限责任公司 | Insulated monitoring method, apparatus and system |
-
2017
- 2017-04-06 CN CN201720365986.1U patent/CN206684223U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108226722A (en) * | 2017-12-19 | 2018-06-29 | 神华集团有限责任公司 | Insulated monitoring method, apparatus and system |
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