CN206638708U - A kind of three-phase power parameter real time monitoring system - Google Patents
A kind of three-phase power parameter real time monitoring system Download PDFInfo
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- CN206638708U CN206638708U CN201720348170.8U CN201720348170U CN206638708U CN 206638708 U CN206638708 U CN 206638708U CN 201720348170 U CN201720348170 U CN 201720348170U CN 206638708 U CN206638708 U CN 206638708U
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- real time
- monitoring system
- power parameter
- time monitoring
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Abstract
The utility model discloses a kind of three-phase power parameter real time monitoring system, it includes three-phase voltage signal modulate circuit, three-phase current signal modulate circuit, three-phase electrical energy computation chip, single-chip microcomputer, button, LCD display and relay, the signal output part of the three-phase voltage signal modulate circuit and three-phase current signal modulate circuit is connected with the signal input part of three-phase electrical energy computation chip respectively, the three-phase electrical energy computation chip is connected with single-chip microcomputer both-way communication, the output end of the button is connected with the input of the single-chip microcomputer, the LCD display and relay are connected with the output end of single-chip microcomputer respectively.The utility model has powerful data acquisition and processing (DAP) function, and multifunction, intellectuality and network monitoring three-phase power parameter can be achieved, and with simple in construction, it is easy to accomplish, the advantages that cost is low, precision is high.
Description
Technical field
The utility model is to be related to a kind of three-phase power parameter real time monitoring system, belongs to electric data monitoring technology neck
Domain.
Background technology
Three-phase alternating current is a kind of transporting pattern of electric energy, and its purposes is very extensive, at present China production, dispatching be all
Three-phase alternating current.With the development of modern social economy, all trades and professions to the demand and degree of dependence more and more higher of power supply, how
Ensure power supply it is safe, continuous, be stably particularly important for power supply enterprise.Especially, with Power Electronic Technique
Fast development, a large amount of non-linear equipments come into operation, and make the quality of power supply worsening, on the other hand with industrial technology water
Flat high speed development, many equipment have very harsh requirement to the quality of power supply, and many household electrical appliance are also wanted to the quality of power supply
Seek also more and more higher.Just because of this, improve the power network quality of power supply into everybody pay close attention to the problem of, and monitor in real time three-phase power ginseng
Number is the direct way for obtaining quality of power supply information, to fast and accurately searching the source of trouble and finding that it is important that potential faults have
Meaning.
Realize at present and two classes are roughly divided into the instrument of three-phase power supplemental characteristic monitoring, the first kind is the pointer-type at initial stage
Instrument, such as the ammeter and voltmeter simulated, wherein foundation has electromagnetic principle, principle of induction or electrostatic principle, this kind of instrument
Though there is principle simple, structure durable, production cost is low, is readily produced, because itself structure limits, machinery
Structure and electromagnetic structure, which have the reason for unstable and error is larger, causes its use to receive limitation；Second class is digital measurement
Instrument, this kind of instrument are that measured analog signal is converted into data signal and by calculating display on a display screen mostly.
Although relative to pointer instrument, the precision of digital measuring instrument, which has, to be greatly improved, and can intuitively read data, but still
So many deficiencies also be present, such as：Can not be adaptive for specific environment and requirement, device linearityization is seriously unfavorable for calibrating,
Function is more single, it is impossible to which real-time online detects and transmitted data etc..Therefore, researching and developing one kind can high precision collecting and transmission three-phase
The real-time monitoring system of parameters of electric power, will be significant to improving the power network quality of power supply.
Utility model content
In view of the above-mentioned problems existing in the prior art and demand, the purpose of this utility model is to provide one kind can be right in high precision
The system that three-phase power parameter is monitored in real time, to improve, the power network quality of power supply provides foundation and Electrical Safety provides safeguard.
To achieve the above object, the technical solution adopted in the utility model is as follows：
A kind of three-phase power parameter real time monitoring system, including three-phase voltage signal modulate circuit, three-phase current signal are adjusted
Manage circuit, three-phase electrical energy computation chip, single-chip microcomputer, button, LCD display and relay, the three-phase voltage signal conditioning electricity
Signal input part of the signal output part of road and three-phase current signal modulate circuit respectively with three-phase electrical energy computation chip is connected,
The three-phase electrical energy computation chip is connected with single-chip microcomputer both-way communication, the output end of the button and the input of the single-chip microcomputer
It is connected, the LCD display and relay are connected with the output end of single-chip microcomputer respectively.
A kind of preferred scheme, the model ADE7758 of the three-phase electrical energy computation chip.
A kind of preferred scheme, the model STM32 of the single-chip microcomputer.
A kind of preferred scheme, the three-phase electrical energy computation chip are connected with single-chip microcomputer by SPI interface both-way communication.
A kind of embodiment, the three-phase voltage signal modulate circuit are by AC voltage transformer, divider resistance, pressure regulation
Resistance and voltage signal filter circuit composition, the divider resistance are connected on the input of AC voltage transformer, the pressure regulation
Resistance is connected in parallel on the output end of AC voltage transformer with voltage signal filter circuit.
A kind of preferred scheme, the AC voltage transformer select TV1013 type voltage transformers.
A kind of preferred scheme, the voltage signal filter circuit are in series by a 1k resistance and a 33nF electric capacity.
A kind of embodiment, the three-phase current signal modulate circuit are by AC current transformer, adjust leakage resistance and electricity
Flow signal filter circuit composition, the output for adjusting leakage resistance to be connected in parallel on AC current transformer with current signal filter circuit
End.
A kind of preferred scheme, the AC current transformer select TVA1421 type current transformers.
A kind of preferred scheme, the current signal filter circuit are in series by 2 1k resistance and 2 33nF electric capacity.
Compared to prior art, the utility model has following advantageous effects：
System described in the utility model can monitor three-phase power parameter during high-precision real, have powerful data acquisition and place
Function is managed, the functions such as data communication and remote control can be achieved, the conventional parameters of electric power such as voltage, electric current, Neng Gouyu can be measured
Other smart machines carry out data exchange, and multifunction, intellectuality and network monitoring three-phase power parameter, and institute can be achieved
System is stated also with simple in construction, it is easy to accomplish, low cost and other advantages, foundation can be provided to improve the power network quality of power supply, strengthened
The management of power use to electric power facility, electrical equipment, reduce the Electrical Safety caused by electric power facility, electrical equipment malfunction operation
Risk, there is obvious practicality.
Brief description of the drawings
Fig. 1 is a kind of theory structure block diagram of three-phase power parameter real time monitoring system provided by the utility model；
Fig. 2 is a kind of structural representation for three-phase voltage signal modulate circuit that the utility model embodiment provides；
Fig. 3 is a kind of structural representation for three-phase current signal modulate circuit that the utility model embodiment provides；
Fig. 4 is the connection circuit diagram of the three-phase electrical energy computation chip that the utility model embodiment provides and single-chip microcomputer.
Embodiment
The technical solution of the utility model is described in further detail below in conjunction with drawings and examples.
Embodiment
As shown in Figure 1：A kind of three-phase power parameter real time monitoring system provided by the utility model, including three-phase voltage letter
Number modulate circuit, three-phase current signal modulate circuit, three-phase electrical energy computation chip, single-chip microcomputer, button, LCD display and relay
Device, the signal output part of the three-phase voltage signal modulate circuit and three-phase current signal modulate circuit respectively with three-phase electric energy meter
The signal input part of amount chip is connected, and the three-phase electrical energy computation chip is connected with single-chip microcomputer both-way communication, the button
Output end is connected with the input of the single-chip microcomputer, the LCD display and relay the output end phase with single-chip microcomputer respectively
Connection.
A kind of three-phase power parameter real time monitoring system provided by the utility model at work, believe by three-phase voltage and electric current
Number respectively by three-phase voltage signal modulate circuit, three-phase current signal modulate circuit collection and conditioning after be conveyed to three-phase electricity
Energy computation chip, transmitted to single-chip microcomputer after analog-to-digital conversion and range are corresponding by three-phase electrical energy computation chip, delayed by single-chip microcomputer
LCD display is conveyed to be shown to onsite user after depositing processing, meanwhile, the basis that single-chip microcomputer is set by reading in EEPROM
Information and alarm limit value, and the voltage with currently gathering, current value are compared, once exception occurs, will be defeated to relay
Go out cut-off signal；In addition, also gamma correction operation and basis manually can be carried out to the voltage and current signal of collection by button
Information and alarm limit value carry out setting operation.
Preferably：
The three-phase electrical energy computation chip selects model ADE7758 electric energy computation chips, because the chip measuring accuracy
It is high, carry two-way pulse output function and a SPI serial line interface, be integrated with second order Σ-D analog-digital converters, digital integrator,
The multiple functions such as reference circuit, temperature sensor, virtual value offset calibration, phase alignment, the calibration of power.
The single-chip microcomputer selects model STM32 chips, the chip have it is low in energy consumption, reapply programing function and be embedded with
Flash memories and RAM memory, flash storage therein may act as EEPROM uses.
The three-phase electrical energy computation chip is connected with single-chip microcomputer by SPI interface both-way communication, and the communication interface has association
The advantages that view is simple, and transmitted data rates are high.
As shown in Figure 2：The three-phase voltage signal modulate circuit can be by AC voltage transformer PT1, divider resistance R2, tune
Piezoresistance R3 and voltage signal filter circuit composition, the divider resistance R2 are connected on the input of AC voltage transformer, institute
State regulating resistor R3 and be connected in parallel on the output end of AC voltage transformer with voltage signal filter circuit.The AC voltage transformer
From TV1013 type voltage transformers, the voltage signal filter circuit is connected structure by a 1k resistance with a 33nF electric capacity
Into.Divider resistance R2 effect is that three-phase piezoelectric voltage is adjusted to suitable AC voltage transformer PT1 input voltage, pressure regulation electricity
The effect for hindering R3 is that AC voltage transformer PT1 output voltage is adjusted to the voltage range needed for three-phase electrical energy computation chip
It is interior.It is each phase voltage of three-phase electricity between UA and UN in figure, UAP ends are the voltage after the processing of overvoltage signal filter circuit
Signal, the voltage measurement port of three-phase electrical energy computation chip can be transferred directly to.
As shown in Figure 3：The three-phase current signal modulate circuit is by AC current transformer CT1, adjusts leakage resistance R and electricity
Signal filter circuit composition is flowed, the tune leakage resistance R is connected in parallel on the output of AC current transformer with current signal filter circuit
End.The AC current transformer CT1 selects TVA1421 type current transformers.The current signal filter circuit is by 2 1k
Resistance and 2 33nF electric capacity are in series.The effect for adjusting leakage resistance R is by AC current transformer CT1 output current adjustment
Into the scope needed for three-phase electrical energy computation chip.IA in figure is by low-tension current caused by AC current transformer CT1
Signal, IAP, IAN correspond to IAP, IAN current signal input on three-phase electrical energy computation chip, filtered through overcurrent signal respectively
Current signal after circuit conditioning is transferred directly to IAP, IAN electric current port on three-phase electrical energy computation chip.
As shown in Figure 4：To make three-phase electrical energy computation chip with microcontroller communication, it is necessary to configure chip periphery circuit.
ADE7758 three-phase electrical energy computation chips are attached with STM32 single-chip microcomputers by SPI communication interface, and SPI serial line interfaces include
4 signals of SCLK, DIN, DOUT and CS, wherein SCLK is clock signal, and when SCLK is trailing edge, single-chip microcomputer passes through DIN
Port writes ADE7758 data；When SCLK is rising edge, data that single-chip microcomputer passes through DOUT signal-obtainings ADE7758.
CS is the chip selection signal of chip, when CS is low level, chooses chip operation, carries out data transmission.Due to STM32 single-chip microcomputers
Operating voltage is 3.3V, and ADE7758 chip voltages are 5V, so also needing to add 5V pull-up resistors in SPI communication port.
It is last it is necessarily pointed out that：It the foregoing is only the preferable embodiment of the utility model, but this
The protection domain of utility model is not limited thereto, and any one skilled in the art discloses in the utility model
In technical scope, the change or replacement that can readily occur in should all be covered within the scope of protection of the utility model.
Claims (10)
- A kind of 1. three-phase power parameter real time monitoring system, it is characterised in that：Including three-phase voltage signal modulate circuit, three-phase electricity Flow signal conditioning circuit, three-phase electrical energy computation chip, single-chip microcomputer, button, LCD display and relay, the three-phase voltage letter The signal output part of number modulate circuit and three-phase current signal modulate circuit inputs with the signal of three-phase electrical energy computation chip respectively End is connected, and the three-phase electrical energy computation chip is connected with single-chip microcomputer both-way communication, the output end of the button and the monolithic The input of machine is connected, and the LCD display and relay are connected with the output end of single-chip microcomputer respectively.
- 2. three-phase power parameter real time monitoring system according to claim 1, it is characterised in that：The three-phase electric energy metering The model ADE7758 of chip.
- 3. three-phase power parameter real time monitoring system according to claim 1, it is characterised in that：The model of the single-chip microcomputer For STM32.
- 4. three-phase power parameter real time monitoring system according to claim 1, it is characterised in that：The three-phase electric energy metering Chip is connected with single-chip microcomputer by SPI interface both-way communication.
- 5. three-phase power parameter real time monitoring system according to claim 1, it is characterised in that：The three-phase voltage signal Modulate circuit is made up of AC voltage transformer, divider resistance, regulating resistor and voltage signal filter circuit, the partial pressure electricity Resistance is connected on the input of AC voltage transformer, and it is mutual that the regulating resistor with voltage signal filter circuit is connected in parallel on alternating voltage The output end of sensor.
- 6. three-phase power parameter real time monitoring system according to claim 5, it is characterised in that：The alternating voltage mutual inductance Device selects TV1013 type voltage transformers.
- 7. three-phase power parameter real time monitoring system according to claim 5, it is characterised in that：The voltage signal filtering Circuit is in series by a 1k resistance and a 33nF electric capacity.
- 8. three-phase power parameter real time monitoring system according to claim 1, it is characterised in that：The three-phase current signal Modulate circuit is made up of AC current transformer, tune leakage resistance and current signal filter circuit, the tune leakage resistance and electric current Signal filter circuit is connected in parallel on the output end of AC current transformer.
- 9. three-phase power parameter real time monitoring system according to claim 8, it is characterised in that：The alternating current mutual inductance Device selects TVA1421 type current transformers.
- 10. three-phase power parameter real time monitoring system according to claim 8, it is characterised in that：The current signal filter Wave circuit is in series by 2 1k resistance and 2 33nF electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720348170.8U CN206638708U (en) | 2017-04-05 | 2017-04-05 | A kind of three-phase power parameter real time monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720348170.8U CN206638708U (en) | 2017-04-05 | 2017-04-05 | A kind of three-phase power parameter real time monitoring system |
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| Publication Number | Publication Date |
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| CN206638708U true CN206638708U (en) | 2017-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720348170.8U Expired - Fee Related CN206638708U (en) | 2017-04-05 | 2017-04-05 | A kind of three-phase power parameter real time monitoring system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110910618A (en) * | 2019-11-27 | 2020-03-24 | 河南省中原智能电气科技有限公司 | Data acquisition module of electrical system |
| CN114624489A (en) * | 2020-12-10 | 2022-06-14 | 武威电建实业有限公司 | High-voltage charge control high-power supply low-voltage control device |
-
2017
- 2017-04-05 CN CN201720348170.8U patent/CN206638708U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110910618A (en) * | 2019-11-27 | 2020-03-24 | 河南省中原智能电气科技有限公司 | Data acquisition module of electrical system |
| CN114624489A (en) * | 2020-12-10 | 2022-06-14 | 武威电建实业有限公司 | High-voltage charge control high-power supply low-voltage control device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171114 |
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| CF01 | Termination of patent right due to non-payment of annual fee |