CN108375696A - Electric energy monitoring device and method and electric energy meter - Google Patents
Electric energy monitoring device and method and electric energy meter Download PDFInfo
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- CN108375696A CN108375696A CN201810252282.2A CN201810252282A CN108375696A CN 108375696 A CN108375696 A CN 108375696A CN 201810252282 A CN201810252282 A CN 201810252282A CN 108375696 A CN108375696 A CN 108375696A
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- 238000012806 monitoring device Methods 0.000 title abstract description 4
- 238000006243 chemical reaction Methods 0.000 claims abstract description 32
- 238000012544 monitoring process Methods 0.000 claims abstract description 27
- 238000001514 detection method Methods 0.000 claims abstract description 16
- 238000005070 sampling Methods 0.000 claims description 25
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- 230000008569 process Effects 0.000 claims description 7
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/10—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods using digital techniques
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Abstract
The disclosure provides an electric energy monitoring device and method and an electric energy meter. The electric energy monitoring device includes: a voltage input configured to input a voltage signal; a type detection circuit configured to detect a type of the input voltage signal; the signal switching circuit is configured to provide the sampled input voltage signal to the analog-to-digital conversion circuit under the condition that the input voltage signal is a direct-current voltage signal, so that the analog-to-digital conversion circuit performs analog-to-digital conversion on the received direct-current voltage signal and performs direct-current value monitoring by the second monitoring circuit; in the case where the input voltage signal is an alternating voltage signal, the sampled input voltage signal is supplied to the first monitoring circuit so that the first monitoring circuit performs alternating current magnitude monitoring. The electric energy meter has the advantages that the type of the input voltage signal is detected, and the alternating current voltage signal and the direct current voltage signal are respectively provided for the corresponding circuits to monitor the electric energy, so that the electric energy meter has compatibility.
Description
Technical field
This disclosure relates to energy monitor field, more particularly to a kind of Power Quality Monitor Device and method, electric energy meter.
Background technology
At present in energy monitor field, because power grid uses alternating current, energy monitor predominantly to exchange system
System detection.Individual producers are also proposed DC meter, but are only used applied to particular surroundings or Research experiment.With green
What the energy used widelys popularize, at the same the straight-flow systems such as photovoltaic have the characteristics that it is more more energy efficient than AC system, convenient, safe, because
The popularization of this straight-flow system is also trend of the times.
But used electric energy meter may be only available for triangular web at present, that is, may be only available for AC system or straight
Streaming system does not have compatibility, can not be suitable for AC system monitoring and straight-flow system simultaneously, therefore to energy monitor band
Inconvenience is carried out.
Invention content
Embodiment of the disclosure solve a technical problem be：It can not compatible with alternating system and direct current in energy monitor
System.
According to the one side of one or more other embodiments of the present disclosure, a kind of Power Quality Monitor Device is provided, including：
Voltage input end is configured as input to voltage signal；
Type detecting circuit, the voltage signal for being configured as detection input are d. c. voltage signal or alternating voltage letter
Number；
Signal switching circuit is configured as in the case where the voltage signal of input is d. c. voltage signal, will be sampled
Input voltage signal be supplied to analog to digital conversion circuit；It, will be through in the case where the voltage signal of input is ac voltage signal
The input voltage signal of sampling is supplied to the first observation circuit；
Analog to digital conversion circuit is configured as carrying out analog-to-digital conversion to the d. c. voltage signal received, transformation result is carried
Supply the second observation circuit；
First observation circuit is configured as carrying out alternating current angle value monitoring using the ac voltage signal received；
Second observation circuit is configured as carrying out direct current angle value monitoring using transformation result.
Optionally, the alternating current angle value that the first observation circuit is additionally configured to be monitored is reported to the second observation circuit.
Optionally, voltage input end includes：
Control source port is configured as input to first voltage signal.
Optionally, type detecting circuit includes：
First detection circuit, be configured as using the phase of voltage signal come detect first voltage signal be DC voltage believe
Number or ac voltage signal.
Optionally, signal switching circuit includes：
First switching circuit is configured as in the case where first voltage signal is d. c. voltage signal, by first voltage
Signal is supplied to DC voltage sample circuit；In the case where first voltage signal is ac voltage signal, first voltage is believed
Number it is supplied to alternating voltage sampling circuit；
DC voltage sample circuit is configured as sampling the d. c. voltage signal received, sampled result is carried
Supply analog to digital conversion circuit；
Alternating voltage sampling circuit is configured as sampling the ac voltage signal received, sampled result is carried
Supply the first observation circuit.
Optionally, further include ground terminal in control source port, using the sampled voltage as alternating voltage sampling circuit
Reference point.
Optionally, voltage input end further includes：
Current input terminal mouth, is configured as input to current signal；
Current signal sample circuit is configured as carrying out sampling and conversion process to current signal, sampled to obtain
Second voltage signal.
Optionally, type detecting circuit further includes：
Second detection circuit, be configured as using the phase of voltage signal come detect second voltage signal be DC voltage believe
Number or ac voltage signal.
Optionally, signal switching circuit further includes：
Second switching circuit is configured as in the case where second voltage signal is d. c. voltage signal, by second voltage
Signal is supplied to analog to digital conversion circuit；In the case where second voltage signal is ac voltage signal, second voltage signal is carried
Supply the first observation circuit.
According to the one side of one or more other embodiments of the present disclosure, a kind of electric energy meter is provided, including such as any of the above-described
The Power Quality Monitor Device that embodiment is related to.
According to the one side of one or more other embodiments of the present disclosure, a kind of energy monitor method is provided, including：
Input voltage signal；
Type detection is carried out to the voltage signal of input；
In the case where the voltage signal of input is ac voltage signal, sampled input voltage signal is supplied to the
One observation circuit, so that the first observation circuit carries out alternating current angle value monitoring using the ac voltage signal received；
In the case where the voltage signal of input is d. c. voltage signal, sampled input voltage signal is subjected to modulus
Conversion, the second observation circuit is supplied to by transformation result, so that the second observation circuit carries out direct current angle value using transformation result
Monitoring.
Optionally, energy monitor method further includes,
The alternating current angle value monitored is reported to the second observation circuit by the first observation circuit.
Optionally, input voltage signal includes：
Input current signal；
Sampling and conversion process are carried out to current signal, to obtain sampled input voltage signal.
By referring to the drawings to the detailed description of the exemplary embodiment of the disclosure, the other feature of the disclosure and its
Advantage will become apparent.
Description of the drawings
In order to illustrate more clearly of the embodiment of the present disclosure or technical solution in the prior art, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some disclosed embodiments without having to pay creative labor, may be used also for those of ordinary skill in the art
With obtain other attached drawings according to these attached drawings.
Fig. 1 is the exemplary block diagram of the Power Quality Monitor Device of an embodiment of the present disclosure.
Fig. 2 is the exemplary block diagram of the Power Quality Monitor Device of the disclosure another embodiment.
Fig. 3 is the exemplary block diagram of the Power Quality Monitor Device of the disclosure another embodiment.
Fig. 4 is the exemplary block diagram of the Power Quality Monitor Device of the disclosure another embodiment.
Fig. 5 is the exemplary block diagram of the kilowatt-hour meter of an embodiment of the present disclosure.
Fig. 6 is the exemplary process diagram of the energy monitor method of an embodiment of the present disclosure.
Specific implementation mode
Below in conjunction with the attached drawing in the embodiment of the present disclosure, the technical solution in the embodiment of the present disclosure is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only disclosure a part of the embodiment, instead of all the embodiments.Below
Description only actually at least one exemplary embodiment is illustrative, is never used as to the disclosure and its application or makes
Any restrictions.Based on the embodiment in the disclosure, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment belongs to the range of disclosure protection.
Unless specifically stated otherwise, positioned opposite, the digital table of the component and step that otherwise illustrate in these embodiments
Up to the unlimited the scope of the present disclosure processed of formula and numerical value.
Simultaneously, it should be appreciated that for ease of description, the size of attached various pieces shown in the drawings is not according to reality
Proportionate relationship draw.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as authorizing part of specification.
In shown here and discussion all examples, any occurrence should be construed as merely illustrative, without
It is as limitation.Therefore, the other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it need not be further discussed in subsequent attached drawing in a attached drawing.
Fig. 1 is the exemplary block diagram of the Power Quality Monitor Device of an embodiment of the present disclosure.As shown in Figure 1, energy monitor fills
It sets including voltage input end 1, type detecting circuit 2, signal switching circuit 3, analog to digital conversion circuit 4, the first observation circuit 5 and
Two observation circuits 6.
As shown in Figure 1, voltage input end 1 is configured as input to voltage signal.
Optionally, the voltage signal inputted can be d. c. voltage signal or ac voltage signal.
The voltage signal that type detecting circuit 2 is configured as detection input is d. c. voltage signal or alternating voltage letter
Number.
Optionally, type detecting circuit 2 can be sentenced the type of voltage signal according to the phase information of voltage signal
It is disconnected.Such as it can be judged by phase zero passage detection.
Signal switching circuit 3 is configured as in the case where the voltage signal of input is d. c. voltage signal, will be sampled
Input voltage signal be supplied to analog to digital conversion circuit 4；It, will be through in the case where the voltage signal of input is ac voltage signal
The input voltage signal of sampling is supplied to the first observation circuit 5.
Analog to digital conversion circuit 4 is configured as carrying out analog-to-digital conversion to the d. c. voltage signal received, and transformation result is carried
Supply the second observation circuit 6.
First observation circuit 5 is configured as carrying out alternating current angle value monitoring using the ac voltage signal received.
For example, the first observation circuit 5 can be energy monitoring special chip or other suitable circuits, so as to alternating current
Signal is pressed to carry out respective handling, to obtain corresponding electric degree value.
Second observation circuit 6 is configured as carrying out direct current angle value prison using the transformation result that analog to digital conversion circuit 4 provides
It surveys.
For example, the second observation circuit 6 can be MCU (Microcontroller Unit, micro-control unit) or other conjunctions
Suitable circuit or chip, to carry out respective handling to d. c. voltage signal, to obtain corresponding electric degree value.
Optionally, the alternating current angle value monitored can be also reported to the second observation circuit 6 by the first observation circuit 5, so as to
Second observation circuit 6 carries out corresponding electric degree value and summarizes.
In above-described embodiment of disclosure Power Quality Monitor Device, it is detected by the type to input voltage signal,
And ac voltage signal and d. c. voltage signal are respectively supplied to corresponding circuit and carry out energy monitor.To make electric energy meter have
Standby compatibility can be suitable for AC system monitoring and straight-flow system, facility is brought to energy monitor simultaneously.
Fig. 2 is the exemplary block diagram of the Power Quality Monitor Device of the disclosure another embodiment.With embodiment illustrated in fig. 1 phase
Than in the embodiment depicted in figure 2, voltage input end 1 includes control source port 11, so as to directly input voltage signal.
Optionally, control source port 11 meets three-phase four-wire system, and wherein terminal 111,112 and 113 can input AC
Voltage or DC voltage.
Further include ground terminal 110 in control source port 11, by joining ground terminal 110 and AC neutral line/direct current
It examines ground input terminal 7 to connect, so as to using zero curve as ground wire, in AC voltage/current signal sampling using the terminal as sampling
Voltage reference points.
As shown in Fig. 2, type detecting circuit 2 includes the first detection circuit 21, signal switching circuit 3 includes the first switching electricity
Road 31, DC voltage sample circuit 32 and alternating voltage sampling circuit 33.
First detection circuit 21 is believed using the phase of voltage signal to detect the first voltage of the input of control source port 11
Number it is d. c. voltage signal or ac voltage signal.
First switching circuit 31 provides first voltage signal in the case where first voltage signal is d. c. voltage signal
First voltage signal is provided in the case where first voltage signal is ac voltage signal to DC voltage sample circuit 32
To alternating voltage sampling electricity 33.
DC voltage sample circuit 32 samples the d. c. voltage signal received, and sampled result is supplied to modulus
Conversion circuit 4.So that analog to digital conversion circuit 4 carries out analog-to-digital conversion to the d. c. voltage signal received, transformation result is provided
Direct current angle value monitoring is carried out to the second observation circuit 6.
Alternating voltage sampling circuit 33 samples the ac voltage signal received, and sampled result is supplied to first
Observation circuit 5.So that the first observation circuit 5 carries out alternating current angle value monitoring using the ac voltage signal received.
For example, the sampled voltage reference point by ground terminal 110 as alternating voltage sampling circuit 33.
Fig. 3 is the exemplary block diagram of the Power Quality Monitor Device of the disclosure another embodiment.With embodiment illustrated in fig. 1 phase
Than in the embodiment shown in fig. 3, voltage input end 1 further includes current input terminal mouth 12 and current signal sample circuit 13.Electric current
Input port 12 is configured as input to current signal, and current signal sample circuit 13 carries out at sampling and conversion current signal
Reason, to obtain sampled second voltage signal.
For example, as shown in figure 3, A+ /+, B+ /+and C+ /+be current input terminal, A-/-, B-/- and C-/- be that electric current is defeated
Go out terminal.
Optionally, type detecting circuit 2 further includes the second detection circuit 22, be configured as using the phase of voltage signal come
It is d. c. voltage signal or ac voltage signal to detect second voltage signal.
Optionally, signal switching circuit 3 further includes the second switching circuit 34, is configured as in second voltage signal being direct current
In the case of voltage signal, second voltage signal is supplied to analog to digital conversion circuit 4, so that analog to digital conversion circuit 4 is to receiving
D. c. voltage signal carry out analog-to-digital conversion, by transformation result be supplied to the second observation circuit 6 carry out direct current angle value monitoring.
In the case where second voltage signal is ac voltage signal, the second switching circuit 34 provides second voltage signal
To the first observation circuit 5.So that the first observation circuit 5 carries out alternating current angle value monitoring using the ac voltage signal received.
Fig. 4 is the exemplary block diagram of the Power Quality Monitor Device of the disclosure another embodiment.As shown in figure 4, can be by Fig. 2 institutes
The Power Quality Monitor Device and Power Quality Monitor Device shown in Fig. 3 shown are integrated.To, can by a Power Quality Monitor Device,
Input voltage signal and current signal are monitored with carrying out corresponding electric degree value simultaneously.
Fig. 5 is the exemplary block diagram of the kilowatt-hour meter of an embodiment of the present disclosure.As shown in figure 5, kilowatt-hour meter 51 includes electricity
It can monitoring device 52.Optionally, Power Quality Monitor Device 52 can be the Power Quality Monitor Device that any embodiment is related in Fig. 1-Fig. 4.
Fig. 6 is the exemplary process diagram of the energy monitor method of an embodiment of the present disclosure.As shown in fig. 6, the present embodiment
Method and step include：
Step 601, input voltage signal.
Optionally, voltage signal can be directly inputted.
Optionally, can also input current signal, by current signal carry out sampling and conversion process, it is sampled to obtain
Input voltage signal.
Step 602, type detection is carried out to the voltage signal of input.
Step 603, judge whether the voltage signal of input is ac voltage signal.
If the voltage signal of input is ac voltage signal, 604 are thened follow the steps.If the voltage signal of input is direct current
Signal is pressed, thens follow the steps 605.
Step 604, sampled input voltage signal is supplied to the first observation circuit, so that the first observation circuit utilizes
The ac voltage signal received carries out alternating current angle value monitoring.
Step 605, sampled input voltage signal is subjected to analog-to-digital conversion, is supplied to the second monitoring electric transformation result
Road, so that the second observation circuit carries out direct current angle value monitoring using transformation result.
Optionally, the alternating current angle value monitored is reported to the second observation circuit by the first observation circuit.So as to the second prison
Slowdown monitoring circuit is summarized to monitoring result and analyzing processing.
Optionally, functional unit block described above can be implemented as executing function described by the disclosure
General processor, programmable logic controller (PLC) (Programmable LogicController, abbreviation：PLC), at digital signal
Manage device (Digital Signal Processor, abbreviation：DSP), application-specific integrated circuit (Application Specific
Integrated Circuit, referred to as：ASIC), field programmable gate array (Field-Programmable Gate Array,
Referred to as：FPGA) either other programmable logic device, discrete gate or transistor logic, discrete hardware components or its
It is arbitrary appropriately combined.
One of ordinary skill in the art will appreciate that realizing that all or part of step of above-described embodiment can pass through hardware
It completes, relevant hardware can also be instructed to complete by program, the program can be stored in a kind of computer-readable
In storage medium, storage medium mentioned above can be read-only memory, disk or CD etc..
The description of the disclosure provides for the sake of example and description, and is not exhaustively or by the disclosure
It is limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.It selects and retouches
It states embodiment and is to more preferably illustrate the principle and practical application of the disclosure, and those skilled in the art is enable to manage
Solve various embodiments with various modifications of the disclosure to design suitable for special-purpose.
Claims (13)
1. a kind of Power Quality Monitor Device, including：
Voltage input end (1), is configured as input to voltage signal；
Type detecting circuit (2), the voltage signal for being configured as detection input is d. c. voltage signal or ac voltage signal；
Signal switching circuit (3) is configured as in the case where the voltage signal of input is d. c. voltage signal, will be sampled
Input voltage signal is supplied to analog to digital conversion circuit (4)；It, will be through in the case where the voltage signal of input is ac voltage signal
The input voltage signal of sampling is supplied to the first observation circuit (5)；
Analog to digital conversion circuit (4) is configured as carrying out analog-to-digital conversion to the d. c. voltage signal received, transformation result is provided
Give the second observation circuit (6)；
First observation circuit (5) is configured as carrying out alternating current angle value monitoring using the ac voltage signal received；
Second observation circuit (6) is configured as carrying out direct current angle value monitoring using the transformation result.
2. Power Quality Monitor Device according to claim 1, wherein：
The alternating current angle value that first observation circuit (5) is additionally configured to be monitored is reported to second observation circuit
(6)。
3. Power Quality Monitor Device according to claim 1, the voltage input end (1) include：
Control source port (11), is configured as input to first voltage signal.
4. Power Quality Monitor Device according to claim 3, the type detecting circuit (2) include：
First detection circuit (21) is configured as detecting the first voltage signal using the phase of voltage signal being direct current
Press signal or ac voltage signal.
5. Power Quality Monitor Device according to claim 4, the signal switching circuit (3) include：
First switching circuit (31) is configured as in the case where the first voltage signal is d. c. voltage signal, will be described
First voltage signal is supplied to DC voltage sample circuit (32)；The case where the first voltage signal is ac voltage signal
Under, the first voltage signal is supplied to alternating voltage sampling circuit (33)；
DC voltage sample circuit (32) is configured as sampling the d. c. voltage signal received, sampled result is carried
Supply analog-digital conversion circuit as described (4)；
Alternating voltage sampling circuit (33) is configured as sampling the ac voltage signal received, sampled result is carried
Supply first observation circuit (5).
Further include ground terminal in the control source port (11) 6. Power Quality Monitor Device according to claim 5
(110), using the sampled voltage reference point as the alternating voltage sampling circuit (33).
7. according to the Power Quality Monitor Device described in any one of claim 1-6, the voltage input end (1) further includes：
Current input terminal mouth (12), is configured as input to current signal；
Current signal sample circuit (13) is configured as carrying out sampling and conversion process to the current signal, to obtain through adopting
The second voltage signal of sample.
8. Power Quality Monitor Device according to claim 7, the type detecting circuit (2) further include：
Second detection circuit (22) is configured as detecting the second voltage signal using the phase of voltage signal being direct current
Press signal or ac voltage signal.
9. Power Quality Monitor Device according to claim 8, the signal switching circuit (3) further include：
Second switching circuit (34) is configured as in the case where the second voltage signal is d. c. voltage signal, will be described
Second voltage signal is supplied to analog to digital conversion circuit (4)；It, will in the case where the second voltage signal is ac voltage signal
The second voltage signal is supplied to the first observation circuit (5).
10. a kind of electric energy meter includes the Power Quality Monitor Device as described in any one of claim 1-9.
11. a kind of energy monitor method, including：
Input voltage signal；
Type detection is carried out to the voltage signal of input；
In the case where the voltage signal of input is ac voltage signal, sampled input voltage signal is supplied to the first prison
Slowdown monitoring circuit, so that the first observation circuit carries out alternating current angle value monitoring using the ac voltage signal received；
In the case where the voltage signal of input is d. c. voltage signal, sampled input voltage signal is subjected to modulus and is turned
It changes, transformation result is supplied to the second observation circuit, so that the second observation circuit carries out direct current electric degree using the transformation result
Value monitoring.
12. energy monitor method according to claim 11, further includes,
The alternating current angle value monitored is reported to second observation circuit by first observation circuit.
13. energy monitor method according to claim 11 or 12, input voltage signal include：
Input current signal；
Sampling and conversion process are carried out to the current signal, to obtain sampled input voltage signal.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810252282.2A CN108375696A (en) | 2018-03-26 | 2018-03-26 | Electric energy monitoring device and method and electric energy meter |
| PCT/CN2018/120595 WO2019184454A1 (en) | 2018-03-26 | 2018-12-12 | Electric energy monitoring device and method, and electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810252282.2A CN108375696A (en) | 2018-03-26 | 2018-03-26 | Electric energy monitoring device and method and electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108375696A true CN108375696A (en) | 2018-08-07 |
Family
ID=63019196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810252282.2A Pending CN108375696A (en) | 2018-03-26 | 2018-03-26 | Electric energy monitoring device and method and electric energy meter |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108375696A (en) |
| WO (1) | WO2019184454A1 (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011069741A (en) * | 2009-09-25 | 2011-04-07 | Panasonic Electric Works Sunx Tatsuno Co Ltd | Ac/dc wattmeter |
| CN203811652U (en) * | 2014-04-21 | 2014-09-03 | 四川启明星蜀达电气有限公司 | Alternate current/direct current shunt sampling circuit of single-phase electric energy meter |
| CN204008847U (en) * | 2014-07-10 | 2014-12-10 | 南京国网电瑞电力科技有限责任公司 | A kind of lighning proof type three-phase intelligent distribution instrument |
| US20160013726A1 (en) * | 2014-07-09 | 2016-01-14 | Landis+Gyr, Inc. | Voltage booster for utility meter |
| CN106483398A (en) * | 2015-08-27 | 2017-03-08 | Ls产电株式会社 | The apparatus and method of measurement data in high-voltage direct current |
| CN106569447A (en) * | 2016-11-14 | 2017-04-19 | 江苏林洋能源股份有限公司 | Electric energy meter having AC/DC adaptive electric energy measurement function and electric energy measurement method |
| CN107677873A (en) * | 2017-08-01 | 2018-02-09 | 国网山东省电力公司电力科学研究院 | A kind of transmission line of electricity current sensing means |
-
2018
- 2018-03-26 CN CN201810252282.2A patent/CN108375696A/en active Pending
- 2018-12-12 WO PCT/CN2018/120595 patent/WO2019184454A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011069741A (en) * | 2009-09-25 | 2011-04-07 | Panasonic Electric Works Sunx Tatsuno Co Ltd | Ac/dc wattmeter |
| CN203811652U (en) * | 2014-04-21 | 2014-09-03 | 四川启明星蜀达电气有限公司 | Alternate current/direct current shunt sampling circuit of single-phase electric energy meter |
| US20160013726A1 (en) * | 2014-07-09 | 2016-01-14 | Landis+Gyr, Inc. | Voltage booster for utility meter |
| CN204008847U (en) * | 2014-07-10 | 2014-12-10 | 南京国网电瑞电力科技有限责任公司 | A kind of lighning proof type three-phase intelligent distribution instrument |
| CN106483398A (en) * | 2015-08-27 | 2017-03-08 | Ls产电株式会社 | The apparatus and method of measurement data in high-voltage direct current |
| CN106569447A (en) * | 2016-11-14 | 2017-04-19 | 江苏林洋能源股份有限公司 | Electric energy meter having AC/DC adaptive electric energy measurement function and electric energy measurement method |
| CN107677873A (en) * | 2017-08-01 | 2018-02-09 | 国网山东省电力公司电力科学研究院 | A kind of transmission line of electricity current sensing means |
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| Publication number | Publication date |
|---|---|
| WO2019184454A1 (en) | 2019-10-03 |
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Application publication date: 20180807 |