CN208421108U - A kind of electric energy quality on-line monitoring device - Google Patents
A kind of electric energy quality on-line monitoring device Download PDFInfo
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- CN208421108U CN208421108U CN201821195501.XU CN201821195501U CN208421108U CN 208421108 U CN208421108 U CN 208421108U CN 201821195501 U CN201821195501 U CN 201821195501U CN 208421108 U CN208421108 U CN 208421108U
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Abstract
The utility model discloses a kind of electric energy quality on-line monitoring device, M analog board is used to acquire the electric signal of power grid, and is sent to backboard after collected electric signal is converted to digital signal；Collected intake signal is sent to backboard for acquiring intake signal by N number of switch template；Monitor board is used to obtain digital signal and intake signal from backboard, and analytical calculation is carried out to digital signal and intake signal and obtains power quality parameter and recording start-up parameter, and recording is started according to recording start-up parameter and power quality parameter is sent to backboard；It is display panel used in obtaining power quality parameter from backboard, and power quality parameter is shown.The utility model has more monitoring channels, can be monitored to some chronicity power quality parameters, be provided simultaneously with the function of electric energy quality monitoring and failure wave-recording, improve the reliability of electric energy quality monitoring, and reduce equipment manufacturing costs.
Description
Technical field
The utility model relates to power electronics field more particularly to a kind of electric energy quality on-line monitoring devices.
Background technique
Electric power is that modern society's use scope is most wide, one of use value highest and the maximum product of usage amount.With existing
For the development of science and technology, great change, such as semiconductor rectifier, crystalline substance is had occurred in power load structure in modern power systems
The rapid development of the loads such as brake tube pressure regulation and frequency conversion adjustment device, electric furnace arrangement for producing steel, electric railway and household electrical appliance, due to it
Non-linear, impact and unbalanced electrical characteristics, are distorted the voltage waveform of power grid, cause voltage fluctuation and flicker
And three-phase imbalance, or even cause system frequency fluctuation etc., serious interference or pollution are caused to power quality.Power grid
In just face more and more power quality problems, therefore monitoring, analysis and the improvement of power quality become increasingly important.
Equipment for monitoring power quality and fault oscillograph are that power system staff monitors power quality, analysis, processing
Electric power system fault provides the foundation of science.The equipment or instrument in terms of many electric energy quality monitorings are had existed currently on the market
Table, there are commonly portable electric energy mass-synchrometers and fixed electric energy quality on-line monitoring device.Wherein, portable electric energy matter
It is few in the presence of monitoring channel to measure analyzer, the problem of being monitored to some chronicity power quality index inconvenience.Fixed electric energy
Quality on-line monitoring device can only measure power quality index, not support recording function, recording function that event occurs in electric system
Voltage, current waveform when barrier before and after analysis failure, also seem and very must so as to quick handling failure convenient for accident analysis
It wants.Independent power supply and data storage is respectively adopted in existing mutually independent equipment for monitoring power quality and fault wave recording device
The cost of equipment etc., manufacture is larger.
Summary of the invention
Technical problem to be solved by the utility model is to provide a kind of electric energy quality on-line monitoring devices, have more
Channel is monitored, some chronicity power quality parameters can be monitored, electric energy quality monitoring and failure wave-recording are provided simultaneously with
Function, improves the reliability of electric energy quality monitoring, and reduces equipment manufacturing costs.
In order to solve the above-mentioned technical problem, the utility model provides a kind of electric energy quality on-line monitoring device, including M
Analog board, N number of switch template, monitor board, backboard and display board, the M analog board, N number of switch template, monitor board and
Display board is connected to backboard；
The M analog board is used to acquire the electric signal of power grid, and collected electric signal is converted to digital signal
After be sent to backboard；
Collected intake signal is sent to backboard for acquiring intake signal by N number of switch template；
The monitor board is used to obtain the digital signal and the intake signal from backboard, and to the digital signal
Analytical calculation is carried out with the intake signal and obtains power quality parameter and recording start-up parameter, and is started according to the recording
Parameter starts recording and power quality parameter is sent to backboard；
It is described display panel used in obtaining the power quality parameter from backboard, and the power quality parameter is shown
Show.
Further, the analog board includes signal acquisition module, the analog signal for acquiring the electric signal of power grid
Processing module, AD acquisition module and programmable logic device；
The signal acquisition module is connect with the analog signal processing module, the analog signal processing module with it is described
The connection of AD acquisition module, the AD acquisition module are connect with the programmable logic device, the programmable logic device connection
To backboard.
Further, the programmable logic device uses FPGA.
Further, the signal acquisition module include 4 voltage transformers for acquiring the voltage signal of power grid and
For acquiring 4 current transformers of the current signal of power grid.
Further, the monitor board includes for obtaining the of the digital signal and the intake signal from backboard
One control processing module, the second control processing mould for carrying out analytical calculation to the digital signal and the intake signal
Block, the first memory module and the second memory module；
It is described first control processing module is connect with first memory module, it is described second control processing module with it is described
The connection of second memory module, the first control processing module and the second control processing module communication connection.
Further, the monitor board further include the usb interface module being connect with PERCOM peripheral communication, ethernet interface module and
RS485 interface module, the usb interface module, the ethernet interface module and the RS485 interface module are with described
Two control processing module connections.
Further, the first control processing module is FPGA, and the second control processing module is arm processor,
First memory module is dual port RAM, and second memory module is SD CARD.
Further, the monitor board further includes display interface device module, the display interface device module and described second
Processing module connection is controlled, the display interface device module is additionally coupled to backboard；
The display board includes display, and the display is connected to backboard.
Further, the display board includes LED module, and the LED module is connected to backboard；
The display board further includes USB interface or RS485 interface, and the USB interface or the RS485 interface are connected to back
Plate.
Further, the switch template include the first connection terminal, second connection end son, open into optocoupler, output optocoupler,
Relay driving module, relay and programmable logic device；
First connection terminal is connect with described open into optocoupler, and described open connects into optocoupler and the programmable logic device
It connects, the programmable logic device is connect with the backboard, and the programmable logic device is also connect with the optocoupler of outputing, institute
State and output optocoupler and connect with the relay driving module, the relay driving module is connect with the relay, it is described after
Electric appliance is connect with second connection end.
Electric energy quality on-line monitoring device provided by the utility model, the electric signal of M analog board acquisition power grid, and will
Collected electric signal is sent to backboard after being converted to digital signal；N number of switch template acquires intake signal, and will collect
Intake signal be sent to backboard, more monitoring channels that M analog board and N number of switch template are constituted can be to some long-term
Property power quality parameter is monitored, and improves the reliability of electric energy quality monitoring；Monitor board from backboard obtain digital signal and
Intake signal, and analytical calculation is carried out to digital signal and intake signal and obtains power quality parameter and recording starting ginseng
Number, and recording is started according to recording start-up parameter and power quality parameter is sent to backboard；Display board obtains electric energy from backboard
Mass parameter, and power quality parameter is shown, it is provided simultaneously with the function of electric energy quality monitoring and failure wave-recording, improves electricity
The reliability of energy quality-monitoring, and reduce equipment manufacturing costs.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of electric energy quality on-line monitoring device provided by the utility model；
Fig. 2 is the structure of one embodiment of the analog board of electric energy quality on-line monitoring device provided by the utility model
Schematic diagram；
Fig. 3 is that the structure of one embodiment of the monitor board of electric energy quality on-line monitoring device provided by the utility model is shown
It is intended to；
Fig. 4 is the structure of one embodiment of the switch template of electric energy quality on-line monitoring device provided by the utility model
Schematic diagram.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, fall within the protection scope of the utility model.
It is the structural schematic diagram of electric energy quality on-line monitoring device provided by the utility model referring to Fig. 1.
The utility model provides a kind of electric energy quality on-line monitoring device, including M analog board 1, N number of switch template 2,
Monitor board 3, backboard 4 and display board 5, M analog board 1, N number of switch template 2, monitor board 3 and display board 5 are connected to backboard
4；
M analog board 1 is used to acquire the electric signal of power grid, and sends out after collected electric signal is converted to digital signal
It send to backboard 4；
Collected intake signal is sent to backboard 4 for acquiring intake signal by N number of switch template 2；
Monitor board 3 is used to obtain digital signal and intake signal from backboard 4, and to digital signal and intake signal into
Row analytical calculation obtains power quality parameter and recording start-up parameter, and according to recording start-up parameter starts recording and by electric energy matter
Amount parameter is sent to backboard 4；
Display board 5 is used to obtain power quality parameter from backboard 4, and shows to power quality parameter.
In the specific implementation, M analog board 1 acquires the electric signal of power grid, and collected electric signal is converted to number
Backboard 4 is sent to after word signal；N number of switch template 2 acquires intake signal, and collected intake signal is sent to back
Plate 4, M analog board 1 and N number of switch template 2 constitute more monitoring channels, solve the problems, such as that sense channel is few, can be to some
Chronicity power quality parameter is monitored, and improves the reliability of electric energy quality monitoring；Monitor board 3 obtains number from backboard 4
Signal and intake signal, and analytical calculation is carried out to digital signal and intake signal and show that power quality parameter and recording open
Dynamic parameter, and recording is started according to recording start-up parameter and power quality parameter is sent to backboard 4；Display board 5 is obtained from backboard 4
Power quality parameter is taken, and power quality parameter is shown, is provided simultaneously with the function of electric energy quality monitoring and failure wave-recording,
The situation of change that in system jam, can automatically, accurately record the various electrical quantity of failure front and back process, improves electricity
The reliability of energy quality-monitoring, and reduce equipment manufacturing costs.
It should be noted that power quality parameter include but is not limited to voltage, frequency, tri-phase unbalance factor, voltage fluctuation,
Flickering, harmonic wave and harmonic power etc..Wherein, backboard 4 is each socket panel: switch template 2, analog board 1 and monitor board 3
Between communication provide channel, be the transport hub of whole system.This sentences M and is illustrated equal to 3, N equal to 2, carries on the back
4 data-bus width of plate can be 16, address bus 8, as shown in Figure 1, being 2 switch templates, 2,31 and of analog board
Monitor board 3 is assigned with fixed addressable address, and monitor board 3 is that 000,31 sequences of analog board are 001,010 and 011, and 2 are opened
Closing template 2 is 100 and 101.When monitor board 3 controls high 3 of 4 address bus of backboard with the addressing of certain socket panel fixation
When location is consistent, this socket panel is selected, for example, being 010 when monitor board 3 controls high 3 of 4 address bus of backboard, then seeks
The analog board 1 that location address is 010 is selected.Low 5 of address are used for data addressing simultaneously, to complete plate choosing and each
Communication between socket panel.
Referring to fig. 2, be electric energy quality on-line monitoring device provided by the utility model analog board one embodiment
Structural schematic diagram.As shown in Fig. 2, analog board 1 includes signal acquisition module 11 for acquiring the electric signal of power grid, simulation
Signal processing module 12, AD acquisition module 13 and programmable logic device 14；
Signal acquisition module 11 is connect with analog signal processing module 12, analog signal processing module 12 and AD acquisition module
13 connections, AD acquisition module 13 are connect with programmable logic device 14, and programmable logic device 14 is connected to backboard 4.
Wherein, the course of work of analog board 1 is as follows: signal acquisition module 11 is acquired the electric signal of power grid, and
Collected electric signal is sent to analog signal processing module 12 to handle, analog signal processing module 12 will treated
Electric signal is sent to AD acquisition module 13, and programmable logic device 14 obtains the sample-synchronous arteries and veins that monitor board 3 is sent by backboard 4
Punching, and 13 synchronized sampling of AD acquisition module is sent it to, to programmable logic device 14 after the sampling completion of AD acquisition module 13
Send sampling complete signal, programmable logic device 14 receive sampling complete signal after read sampling processing after digital signal simultaneously
It is stored, monitor board 3 reads the digital signal by backboard 4.
Further, programmable logic device 14 uses FPGA.
Further, signal acquisition module 11 includes 4 voltage transformers and use for acquiring the voltage signal of power grid
In 4 current transformers of the current signal of acquisition power grid.
It should be noted that 4 voltage transformers and 4 current transformers acquire A, B, C three-phase of measured voltage respectively
And A, B, C three-phase and zero-sequence current of residual voltage and tested electric current, measured voltage and tested electric current are respectively through mutual induction of voltage
After device and current transformer are converted into small voltage signal, then through analog signal processing module 12 processing after be sent to AD acquisition module
13.FPGA obtains the sampling synchronization pulse that monitor board 3 is sent by backboard 4, filters out burr through d type flip flop, is sent to AD acquisition
13 synchronized sampling of module.When FPGA monitors that 13 state of AD acquisition module switchs to the free time, at once by the number letter after sampling processing
It number reads, is stored into the dual port RAM of itself from AD acquisition module 13, and sent by backboard 4 to monitor board 3 and read letter
Number, remind monitor board 3 to read by the digital signal in time.
Wherein, device carries out sampling and signal processing, tool using embedded hardware structure FPGA technologically advanced in the world
Have analysis ability by force and the speed of service it is fast the features such as, and FPGA be low-power consumption novel chip, hardware redundancy design etc. technical sides
Case keeps device operation more reliable and more stable.
It is one embodiment of the monitor board of electric energy quality on-line monitoring device provided by the utility model referring to Fig. 3
Structural schematic diagram.As shown in figure 3, monitor board 3 includes the first control for obtaining digital signal and intake signal from backboard 4
Processing module 31, the second control processing module 32 for carrying out analytical calculation to digital signal and intake signal, first deposits
Store up module 33 and the second memory module 34；
First control processing module 31 is connect with the first memory module 33, the second control processing module 32 and the second storage mould
Block 34 connects, and the first control processing module 31 and the second control processing module 32 communicate to connect.
It should be understood that the first control processing module 31 obtains digital signal and intake signal from backboard 4, and by its
Be stored in the first memory module 33, the second control processing module 32 read in the first memory module 33 digital signal that stores and
Intake signal, and analytical calculation is carried out to the digital signal and the intake signal and obtains power quality parameter and recording
Start-up parameter, and recording is started according to the recording start-up parameter, and recorder data and power quality parameter are stored to second
Memory module 34.
Further, monitor board 3 further includes the usb interface module 36 connecting with PERCOM peripheral communication, ethernet interface module 35
With RS485 interface module 38, usb interface module 36, ethernet interface module 35 and RS485 interface module 38 are controlled with second
Processing module 32 connects.
It should be noted that ethernet interface module 35 includes two ethernet control chip LAN9221 and 2 RJ45 nets
Mouth is used for and extraneous background communication.Usb interface module 36 include 4 USB interfaces may be respectively used in touch screen, keyboard, mouse,
File saves end connection.
Further, first control processing module 31 be FPGA, second control processing module 32 be arm processor, first
Memory module 33 is dual port RAM, and the second memory module 34 is SD CARD.
Wherein, FPGA uses chip EP4CE40, and arm processor uses chip SOM3730.
As shown in figures 1 and 3, monitor board 3 further includes display interface device module 37, display interface device module 37 and the second control
Processing module 32 processed connects, and display interface device module 37 is additionally coupled to backboard 4；
Display board 5 includes display 501, and display 501 is connected to backboard 4.
It should be noted that display interface device module 37 includes analog-digital chip ADV7125 and FlatLink transmitter
Chip SN75LVDS83B, the dss signal that the second control processing module 32 is sent pass through analog-digital chip ADV7125 respectively and turn
For VGA signal and FlatLink transmitter chip SN75LVDS83B switch to LVDS signal for debug and interface display.Wherein,
Display 501 can be touch screen.
Further, display board 5 includes LED module 502, and LED module 502 is connected to backboard 4；
Display board 5 further includes USB interface 503 or RS485 interface 503, and USB interface 503 or RS485 interface 503 are connected to
Backboard 4.
Wherein, LED module is mainly used for the information such as instruction device power supply, operating status, alarm and failure, USB interface 503
For file copy, RS485 interface 503 is used for on-line debugging.
It referring to fig. 4, is one embodiment for switching template of electric energy quality on-line monitoring device provided by the utility model
Structural schematic diagram.As shown in figure 4, switch template 2 include the first connection terminal 21, second connection end 22, open into optocoupler 23,
Output optocoupler 26, relay driving module 25, relay 24 and programmable logic device 27；
First connection terminal 21 is connect with opening into optocoupler 23, is opened and is connect into optocoupler 23 with programmable logic device 27, can compile
Journey logical device 27 is connect with backboard 4, programmable logic device 27 also with output optocoupler 26 and connect, output optocoupler 26 and relay
Drive module 25 connects, and relay driving module 25 is connect with relay 24, and relay 24 is connect with second connection end 22.
It should be noted that switch template 2 is mainly used for acquiring line switching amount, such as the divide-shut brake of monitoring line switching
Location information, the amount of outputing are mainly used for the nodes such as output device alarm, failure.
Electric energy quality on-line monitoring device provided by the utility model, the electric signal of M analog board acquisition power grid, and will
Collected electric signal is sent to backboard after being converted to digital signal；N number of switch template acquires intake signal, and will collect
Intake signal be sent to backboard, more monitoring channels that M analog board and N number of switch template are constituted can be to some long-term
Property power quality parameter is monitored, and improves the reliability of electric energy quality monitoring；Monitor board from backboard obtain digital signal and
Intake signal, and analytical calculation is carried out to digital signal and intake signal and obtains power quality parameter and recording starting ginseng
Number, and recording is started according to recording start-up parameter and power quality parameter is sent to backboard；Display board obtains electric energy from backboard
Mass parameter, and power quality parameter is shown, it is provided simultaneously with the function of electric energy quality monitoring and failure wave-recording, improves electricity
The reliability of energy quality-monitoring, and reduce equipment manufacturing costs.
The above is preferred embodiments of the present invention, it is noted that for the ordinary skill of the art
For personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these are improved and profit
Decorations are also considered as the protection scope of the utility model.
Claims (10)
1. a kind of electric energy quality on-line monitoring device, which is characterized in that including M analog board, N number of switch template, monitor board,
Backboard and display board, the M analog board, N number of switch template, monitor board and display board are connected to backboard；
The M analog board is used to acquire the electric signal of power grid, and sends out after collected electric signal is converted to digital signal
It send to backboard；
Collected intake signal is sent to backboard for acquiring intake signal by N number of switch template；
The monitor board is used to obtain the digital signal and the intake signal from backboard, and to the digital signal and institute
It states intake signal progress analytical calculation and obtains power quality parameter and recording start-up parameter, and according to the recording start-up parameter
Start recording and power quality parameter is sent to backboard；
It is described display panel used in obtaining the power quality parameter from backboard, and the power quality parameter is shown.
2. electric energy quality on-line monitoring device as described in claim 1, which is characterized in that the analog board includes for adopting
Collect signal acquisition module, analog signal processing module, AD acquisition module and the programmable logic device of the electric signal of power grid；
The signal acquisition module is connect with the analog signal processing module, and the analog signal processing module is adopted with the AD
Collect module connection, the AD acquisition module is connect with the programmable logic device, and the programmable logic device is connected to back
Plate.
3. electric energy quality on-line monitoring device as claimed in claim 2, which is characterized in that the programmable logic device uses
FPGA。
4. electric energy quality on-line monitoring device as claimed in claim 2, which is characterized in that the signal acquisition module includes using
In 4 voltage transformers of the voltage signal of acquisition power grid and 4 current transformers of the current signal for acquiring power grid.
5. electric energy quality on-line monitoring device as described in claim 1, which is characterized in that the monitor board includes for from back
Plate obtains the first control processing module of the digital signal and the intake signal, for the digital signal and described
Intake signal carries out the second control processing module of analytical calculation, the first memory module and the second memory module；
The first control processing module is connect with first memory module, the second control processing module and described second
Memory module connection, the first control processing module and the second control processing module communication connection.
6. electric energy quality on-line monitoring device as claimed in claim 5, which is characterized in that the monitor board further include with it is external
Usb interface module, ethernet interface module and the RS485 interface module of communication connection, the usb interface module, the ether
Network interface module and the RS485 interface module are connect with the second control processing module.
7. electric energy quality on-line monitoring device as claimed in claim 5, which is characterized in that described first, which controls processing module, is
FPGA, the second control processing module are arm processor, and first memory module is dual port RAM, the second storage mould
Block is SD CARD.
8. electric energy quality on-line monitoring device as claimed in claim 5, which is characterized in that the monitor board further includes display
Interface module, the display interface device module are connect with the second control processing module, and the display interface device module also connects
It is connected to backboard；
The display board includes display, and the display is connected to backboard.
9. electric energy quality on-line monitoring device as described in claim 1, which is characterized in that the display board includes LED module,
The LED module is connected to backboard；
The display board further includes USB interface or RS485 interface, and the USB interface or the RS485 interface are connected to backboard.
10. electric energy quality on-line monitoring device as described in claim 1, which is characterized in that the switch template includes first
Connection terminal, is opened into optocoupler, outputs optocoupler, relay driving module, relay and programmable logic device second connection end
Part；
First connection terminal is connect with described open into optocoupler, and described open connect into optocoupler with the programmable logic device,
The programmable logic device is connect with the backboard, and the programmable logic device is also connect with the optocoupler of outputing, described
It outputs optocoupler to connect with the relay driving module, the relay driving module is connect with the relay, the relay
Device is connect with second connection end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821195501.XU CN208421108U (en) | 2018-07-26 | 2018-07-26 | A kind of electric energy quality on-line monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821195501.XU CN208421108U (en) | 2018-07-26 | 2018-07-26 | A kind of electric energy quality on-line monitoring device |
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| CN208421108U true CN208421108U (en) | 2019-01-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108680812A (en) * | 2018-07-26 | 2018-10-19 | 珠海英泰利电力技术有限公司 | A kind of electric energy quality on-line monitoring device |
-
2018
- 2018-07-26 CN CN201821195501.XU patent/CN208421108U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108680812A (en) * | 2018-07-26 | 2018-10-19 | 珠海英泰利电力技术有限公司 | A kind of electric energy quality on-line monitoring device |
| CN108680812B (en) * | 2018-07-26 | 2025-02-14 | 珠海英泰利电力技术有限公司 | A device for online monitoring of power quality |
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