CN207650309U - A kind of electric energy quality detection device - Google Patents
A kind of electric energy quality detection device Download PDFInfo
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- CN207650309U CN207650309U CN201721886258.1U CN201721886258U CN207650309U CN 207650309 U CN207650309 U CN 207650309U CN 201721886258 U CN201721886258 U CN 201721886258U CN 207650309 U CN207650309 U CN 207650309U
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- 230000005611 electricity Effects 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 4
- 230000007774 longterm Effects 0.000 abstract description 5
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- 238000010586 diagram Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
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- 238000011156 evaluation Methods 0.000 description 2
- 238000010921 in-depth analysis Methods 0.000 description 2
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- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 2
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- 238000005516 engineering process Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- 238000005070 sampling Methods 0.000 description 1
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Abstract
The utility model discloses a kind of electric energy quality detection devices, including power module, the current transformer and voltage transformer being arranged in power module, and the electric energy chip powered by power module, MCU, carrier module, reservoir, the current transformer, voltage transformer is all connected with electric energy chip, it is sent to electric energy chip for acquisition current signal and voltage signal, the electric energy chip obtains electrical energy parameter for being computed by current signal and voltage signal, the MCU is connected to read electrical energy parameter and identify corresponding power quality event with electric energy chip, the reservoir is connected data for storage with MCU, the carrier module is connected with MCU for conversion digital signal and carrier signal.The present apparatus not only has higher data-handling capacity, but also can detect the various indexs of power quality, contributes to the long-term follow, complete detection and deep assessment of power quality, while reducing cost.
Description
Technical field
The utility model is related to Power Quality Detection fields, are specifically related to a kind of electric energy quality detection device.
Background technology
Existing electric energy quality detection device is mainly based upon online electrical energy monitoring system, is examined using power quality
It surveys Module-embedding on other devices, and the basic electrical energy parameter of acquisition is passed into server, carried out by server a large amount of
The scheme of analysis, the processing of data.But there are apparent limitations for this scheme：Monitoring cycle is longer, and real-time is poor, generally requires
A large amount of manpower and materials measure and data statistics, and quantity amount is smaller, can not achieve and carries out tracking and testing to monitoring point,
It is difficult to cause the bad reason of power quality deeper into analysis.
Utility model content
In order to solve the above-mentioned technical problem, the purpose of this utility model be to provide it is a kind of can store local data, record it is more
Kind electrical energy parameter and electric energy event and the electric energy quality detection device of upload.
The technical solution adopted in the utility model is：
A kind of electric energy quality detection device, including power module, the current transformer and voltage that are arranged in power module
Mutual inductor and the electric energy chip powered by power module, MCU, carrier module, reservoir, the current transformer, voltage are mutual
Sensor is all connected with electric energy chip, and electric energy chip, the electric energy chip are sent to for acquisition current signal and voltage signal
Electrical energy parameter is obtained for being computed by current signal and voltage signal, and the MCU is connected to read with electric energy chip
Electrical energy parameter simultaneously identifies corresponding power quality event, and the reservoir is connected data for storage with MCU, the carrier wave mould
Block is connected with MCU for conversion digital signal and carrier signal.
Further, RC filter circuits are provided between the current transformer and electric energy chip for filtering.
Further, the MCU and reservoir are connected by power down protection module with power module, the power down protection
The stand-by power supply of a period of time is provided when module is used to power off.
Further, the power down protection module include charging circuit, super capacitor, booster circuit, power sensor detecting circuit,
The voltage comparator and control circuit that power supply is detected by power sensor detecting circuit；The charging circuit, booster circuit
One end connect with the power module, a diode is provided between the power module and MCU, reservoir；The charging
Circuit, booster circuit the other end be all connected with the super capacitor, the voltage comparator is connect with power sensor detecting circuit, described
Power sensor detecting circuit is connect with power module, the control circuit respectively with the power module, booster circuit, voltage comparator
Connection, for controlling the electric discharge of super capacitor.
Wherein, the control circuit includes resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance
R7, triode Q1, triode Q2, zener diode D4, capacitance C1 and common cathode double diode D3；The hair of the triode Q1
Emitter-base bandgap grading is connect with super capacitor, and the collector of triode Q1 is connect with resistance R4 and resistance R6 respectively, the resistance R4 and boosting
Circuit enables input terminal connection, and the resistance R6 connects signal ground；First sun of the base stage of triode Q1 and common cathode double diode D3
Pole 1 connects, and resistance R1 is parallel between the emitter and base stage of the triode Q1；The second sun of the common cathode double diode D3
Pole 2 is connect through resistance R2 with voltage comparator output end；The common cathode 3 of the common cathode double diode D3 is through resistance R3 and triode
The collector of Q2 connects, the emitter of triode Q2 be signally connected, the base stage of triode Q2 respectively with resistance R5, resistance
R7, capacitance C1 connections, the resistance R7, capacitance C1 are all connected with signal ground, and resistance R5 is through zener diode D4 and boosting electricity
Road output end is connected.
The beneficial effects of the utility model：
Embedded real time system and information network technique are introduced Power Quality Detection by the present apparatus, not only have higher number
According to processing capacity, but also the various indexs of power quality can be detected, store a large amount of statistical data and historical data, help
In the long-term follow of power quality, complete detection and deep assessment, while the Meteorological of equipment is reduced, is power quality
Event statistics, in-depth analysis, decision information and long-term evaluation provide strong support.
It is provided with power down protection module in the device, need to only be can be completed in device looses power by a super capacitor,
It is powered, avoids and occupy the high problem of the area inside equipment using conventional stand-by power supply circuit, while reducing into
This.
Description of the drawings
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings；
Fig. 1 is the functional block diagram of the utility model electric energy quality detection device；
Fig. 2 is the work flow diagram of the utility model electric energy chip；
Fig. 3 is the functional block diagram of the utility model power down protection module；
Fig. 4 is the circuit diagram of control circuit in the utility model power down protection module；
Fig. 5 is the structure chart of the utility model connecting terminal.
Specific implementation mode
It is as Figure 1-Figure 5 a kind of electric energy quality detection device of the utility model, including power module 1, setting exist
Current transformer 11 and voltage transformer 12 in power module 1 and the electric energy chip 2 powered by power module 1, MCU3,
Carrier module 4, reservoir 5, current transformer 11, voltage transformer 12 are connected with electric energy chip 2, for acquiring current signal
Be sent to electric energy chip 2 with voltage signal, wherein be provided between current transformer 11 and electric energy chip 2 RC filter circuits with
For filtering.
Then, electric energy chip 2 show that voltage, electric current, power etc. are electric for being computed by current signal and voltage signal
Energy parameter, MCU3 are connected for reading electrical energy parameter and to identify various power qualities in conjunction with built-in algorithm with electric energy chip 2
Event, reservoir 5 are connected data for storage with MCU3, it is preferred that flash reservoirs are used in the present embodiment, it can also
Using the storage facilities such as micro hard disk etc. of other media；Carrier module 4 is connected with MCU3 for conversion digital signal and load
Wave signal.
MCU3 and reservoir 5 are connected by power down protection module 6 with power module 1, and power down protection module 6 is for urgent
The stand-by power supply that a period of time is provided when power-off, avoiding data from having little time storage causes to lose.Power down protection module 6 includes charging
Circuit 61, super capacitor 62, booster circuit 63, power sensor detecting circuit 64, the voltage comparator 65 that power supply is detected and
Control circuit 66；Charging circuit 61, booster circuit 62 one end connect with power module 1, power module 1 and MCU3, storage
A diode is provided between device 5；Charging circuit 61, booster circuit 63 the other end be all connected with super capacitor 62, voltage compares
Device 65 is connect with power sensor detecting circuit 64, and power sensor detecting circuit 64 is connect with power module 1, control circuit 66 respectively with power supply mould
Block 1, booster circuit 63, voltage comparator 65 connect, for controlling the electric discharge of super capacitor 62.
As shown in figure 3, power module 1 is after the power is turned on, charging circuit 61 starts to charge up super capacitor 62；At the same time, electric
Source circuit for detecting 64 also begins to work, and the supply voltage result of detection is exported to voltage comparator 65, by voltage comparator
65 pairs of voltage values judge, when voltage declines and is less than a predetermined threshold value, power input is no longer that MCU3 and reservoir 5 supply
Electricity, but exported by super capacitor 62, it powers to MCU3 and reservoir 5 via booster circuit 63；Control circuit 66 is as anti-
Whether the ring being fed back in road, the constantly detection of control circuit 66 are vibrated to the supply voltage of MCU3 and reservoir 5, a detection
The power supply of booster circuit 63 is supplied to just shutdown super capacitor 62.Preferably, charging circuit 61 uses DC-DC voltage-releasing voltage stabilizers,
Booster circuit 63 uses DC-DC boost-voltage regulators.
Control circuit 66 includes resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, triode
Q1, triode Q2, zener diode D4, capacitance C1 and common cathode double diode D3；The emitter and super capacitor of triode Q1
62 connections, the collector of triode Q1 are connect with resistance R4 and resistance R6 respectively, and resistance R4 enables input terminal with booster circuit 63
Connection, resistance R6 connect signal ground；The base stage of triode Q1 is connect with the first anode of common cathode double diode D3, the hair of triode Q1
Resistance R1 is parallel between emitter-base bandgap grading and base stage；The second plate of common cathode double diode D3 is exported through resistance R2 and voltage comparator
End connection；The common cathode of common cathode double diode D3 is connect through resistance R3 with the collector of triode Q2, the emitter of triode Q2
Be signally connected, the base stage of triode Q2 is connect with resistance R5, resistance R7, capacitance C1 respectively, and resistance R7, capacitance C1 connect
Signal ground is connect, resistance R5 is connected through zener diode D4 with 63 output end of booster circuit.
Because as super capacitor discharges, super capacitor voltage itself can constantly decline, and be less than the minimum work of booster circuit
When voltage, booster circuit out-put supply can drop to the minimum operating voltage of mainboard hereinafter, mainboard is due to being stopped at this time, power consumption
Reduce, the electric current of super capacitor supply booster circuit can also be reduced, super due to the effect of the certain internal resistance of super capacitor itself
Capacitance voltage can go up, and when being more than the minimum operating voltage of booster circuit, booster circuit can work again, can so cause output electric
Pressure is gone up again, and mainboard is started to work again.It recycles repeatedly above, the supply voltage of mainboard is caused to form oscillation.
Therefore it as shown in figure 4, the control circuit 66 of the utility model just can solve above-mentioned technical problem, can be vibrated
Inhibition；The ends PC3 are 65 output end of voltage comparator, the output for the circuit being made of here voltage comparator 65；The ends+5.0V_C
For 62 output end of super capacitor；The ends+12.0V_OUT are 63 output end of booster circuit；The ends BPS_EN enable defeated for booster circuit 63
Enter end.When 63 output voltage of booster circuit is less than the BE junction voltages of zener diode D4 and triode Q2 (about 7.5V), three poles
Pipe Q2 cut-offs, cause triode Q1 to end, and the ends BPS_EN are low level, and 63 forbidden energy of booster circuit is stopped.Usually, work as 12V
When external power supply is higher than the minimum operating voltage of MCU3 and reservoir 5, it is high level, boosting electricity that voltage comparator 65, which exports PC3,
63 forbidden energy of road is also stopped.
Wherein, the effect of common cathode double diode D3 is that, when the ends PC3 are high level, triode Q1 can also end, BPS_
The ends EN export low level, and subsequent DC-DC booster circuit 63 does not work；
The advantages of above circuit is can to force to forbid stand-by power supply so that there are no just for MCU3 and reservoir 5 when powering on
Often running, is not required to not enable stand-by power supply when power down protection, reduces the charging time of super capacitor when powering on.
As shown in Fig. 2, the workflow of the utility model is：
First, current transformer 11 is filtered by centre path current mutual inductor, the secondary mutual inductance signal of generation by RC
The current signal as input chip is sent to electric energy chip 2 afterwards；Voltage transformer 12 is by the form of electric resistance partial pressure, by voltage
Data carry out proportional diminution, as can be with the voltage signal of inputing power chip 2.
Then, electric energy chip 2 can carry out linearly enhanced processing, then carry out AD numbers for input current voltage signal
According to sampling, analog quantity is converted to digital quantity, gain compensation then is carried out for digital quantity, basic electric current, electricity can be obtained
Press data.On the one hand, offset calibration is carried out, by low-pass filtering data processing, corresponding electric current, voltage ginseng can be obtained
Number, and parameter can be inserted in corresponding registers, be read by MCU3；On the other hand electric current, voltage data are calculated, and
The mode of integral is taken, the parameters such as power, power consumption can be obtained.
Finally, MCU3 reads the basic electrical energy parameter of electric energy chip 2, reality is calculated by formula by SPI communication
Electrical energy parameter value, in addition can also identify various power quality events in conjunction with various algorithms, power quality event include but
Be not limited to voltage deviation out-of-limit event, power system frequency deviation event, flickering event and voltage fluctuation event, voltage dip with
Short interruptions event etc., MCU3 store electrical energy parameter and power quality event into reservoir 5, can also pass through carrier module 4
It is uploaded to other equipment.
Embedded real time system and information network technique are introduced Power Quality Detection by the present apparatus, not only have higher number
According to processing capacity, but also the various indexs of power quality can be detected, store a large amount of statistical data and historical data, help
In the long-term follow of power quality, complete detection and deep assessment, while the Meteorological of equipment is reduced, is power quality
Event statistics, in-depth analysis, decision information and long-term evaluation provide strong support.
It is provided with power down protection module 6 in the device, need to only be can be completed in device looses power by a super capacitor,
It is powered, avoids and occupy the high problem of the area inside equipment using conventional stand-by power supply circuit, while reducing into
This.
Control circuit 66 can force to forbid stand-by power supply so that MCU3 and reservoir 5 are normally transported not yet when powering on
Make, is not required to not enable stand-by power supply when power down protection, reduces the charging time of super capacitor when powering on.
The foregoing is merely the preferred embodiments of the utility model, the utility model is not limited to above-mentioned embodiment party
Formula, if with essentially identical means realize the technical solution of the utility model aim belong to the scope of protection of the utility model it
It is interior.
Claims (5)
1. a kind of electric energy quality detection device, it is characterised in that:Including power module (1), the electricity being arranged in power module (1)
Current transformer (11) and voltage transformer (12) and the electric energy chip (2) powered by power module (1), MCU (3), carrier wave mould
Block (4), reservoir (5), the current transformer (11), voltage transformer (12) are all connected with electric energy chip (2), for adopting
Colleeting comb signal and voltage signal are sent to electric energy chip (2), and the electric energy chip (2) is used to believe by current signal and voltage
It number is computed and to obtain electrical energy parameter, the MCU (3) is connected to read electrical energy parameter and identify corresponding with electric energy chip (2)
Power quality event, the reservoir (5) is connected data for storage, the carrier module (4) and MCU with MCU (3)
(3) it is connected for conversion digital signal and carrier signal.
2. electric energy quality detection device according to claim 1, it is characterised in that：The current transformer (11) and electric energy
RC filter circuits are provided between chip (2) for filtering.
3. electric energy quality detection device according to claim 1, it is characterised in that：The MCU (3) and reservoir (5) are equal
It is connected with power module (1) by power down protection module (6), the power down protection module (6) is for providing one section when powering off when
Between stand-by power supply.
4. electric energy quality detection device according to claim 3, it is characterised in that：The power down protection module (6) includes
Charging circuit (61), booster circuit (63), power sensor detecting circuit (64), passes through power sensor detecting circuit (64) at super capacitor (62)
The voltage comparator (65) and control circuit (66) that power supply is detected；The charging circuit (61), booster circuit (63)
One end connect with the power module (1), the power module (1) and MCU (3), reservoir are provided with one or two poles between (5)
Pipe；The charging circuit (61), booster circuit (63) the other end be all connected with the super capacitor (62), the voltage comparator
(65) it is connect with power sensor detecting circuit (64), the power sensor detecting circuit (64) connect with power module (1), the control circuit
(66) it is connect respectively with the power module (1), booster circuit (63), voltage comparator (65), for controlling super capacitor
(62) electric discharge.
5. electric energy quality detection device according to claim 4, it is characterised in that：The control circuit (66) includes resistance
R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, triode Q1, triode Q2, zener diode D4,
Capacitance C1 and common cathode double diode D3；The emitter of the triode Q1 is connect with super capacitor (62), the collection of triode Q1
Electrode is connect with resistance R4 and resistance R6 respectively, and the resistance R4 enables input terminal with booster circuit (63) and connect, the resistance
R6 connects signal ground；The base stage of triode Q1 is connect with the first anode of common cathode double diode D3, the emitter of the triode Q1
Resistance R1 is parallel between base stage；The second plate of the common cathode double diode D3 is through resistance R2 and voltage comparator output end
Connection；The common cathode of the common cathode double diode D3 is connect through resistance R3 with the collector of triode Q2, the transmitting of triode Q2
Pole be signally connected, the base stage of triode Q2 is connect with resistance R5, resistance R7, capacitance C1 respectively, the resistance R7, capacitance C1
It is all connected with signal ground, resistance R5 is connected through zener diode D4 with the booster circuit (63) output end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721886258.1U CN207650309U (en) | 2017-12-27 | 2017-12-27 | A kind of electric energy quality detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721886258.1U CN207650309U (en) | 2017-12-27 | 2017-12-27 | A kind of electric energy quality detection device |
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| Publication Number | Publication Date |
|---|---|
| CN207650309U true CN207650309U (en) | 2018-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721886258.1U Expired - Fee Related CN207650309U (en) | 2017-12-27 | 2017-12-27 | A kind of electric energy quality detection device |
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| Country | Link |
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| CN (1) | CN207650309U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444523A (en) * | 2018-10-23 | 2019-03-08 | 广州汉光电气股份有限公司 | A kind of electric energy calculates display storage method and device |
| CN111426873A (en) * | 2020-05-13 | 2020-07-17 | 南京海兴电网技术有限公司 | Electronic AC sensor sampling and metering circuit |
-
2017
- 2017-12-27 CN CN201721886258.1U patent/CN207650309U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444523A (en) * | 2018-10-23 | 2019-03-08 | 广州汉光电气股份有限公司 | A kind of electric energy calculates display storage method and device |
| CN111426873A (en) * | 2020-05-13 | 2020-07-17 | 南京海兴电网技术有限公司 | Electronic AC sensor sampling and metering circuit |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180724 |