CN108120951A - A kind of achievable built-in switch fault detect takes control intelligent electric energy meter - Google Patents
A kind of achievable built-in switch fault detect takes control intelligent electric energy meter Download PDFInfo
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- CN108120951A CN108120951A CN201810101911.1A CN201810101911A CN108120951A CN 108120951 A CN108120951 A CN 108120951A CN 201810101911 A CN201810101911 A CN 201810101911A CN 108120951 A CN108120951 A CN 108120951A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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Abstract
A kind of achievable built-in switch fault detect takes control intelligent electric energy meter, including the first current transformer, the second current transformer, first switch, second switch, third switch, first resistor, second resistance, first voltage collecting unit, second voltage collecting unit, tertiary voltage collecting unit, the 4th voltage acquisition unit, DSP, A/D converter, temperature sensor, control unit and display.The intelligent electric energy meter can obtain accurate resistance value, realize the automatic detection of built-in switch failure by detecting built-in switch in the fluctuation of two terminal voltages at different moments and the electric current flowed through.The present invention reliably takes control according to the electricity charge balance amount information of electricity consumption user by the shut-off and closure, realization of DSP three built-in switch of control；Built-in switch is detected in the fluctuation of two terminal voltages at different moments and the electric current flowed through, and the penalty coefficient of each voltage acquisition unit of real time modifying, accurate resistance value is obtained, realizes the automatic detection of built-in switch failure.
Description
Technical field
Take control intelligent electric energy meter the present invention relates to a kind of achievable built-in switch fault detect, belong to intelligent electric energy meter technology
Field.
Background technology
Intelligent electric energy meter is the important component of intelligent grid, by measuring unit, data processing unit, communication unit etc.
Composition has the function of electrical energy metering, data processing, monitors, automatically controls in real time, information exchange etc..According to electricity consumption user's
Electricity charge balance amount information, expense control intelligent electric energy meter can be realized and electricity consumption user stopped by controlling shut-off and the closure of built-in switch
Telegram in reply.Frequent switching easily causes switching damage, so as to cause the unreliable action taken when controlling.By detecting two end of built-in switch
Voltage and the electric current flowed through can obtain its resistance value.When resistance value increases suddenly and is more than threshold values, you can judge built-in switch
It has been damaged that, and then it is replaced or is repaired.The resistance value of built-in switch is smaller, secondly terminal voltage is generally millivolt level, because
This is difficult the accurate measurement realized in electric energy meter to the voltage.
The content of the invention
The object of the present invention is in order to solve the problems, such as the breakdown judge of expense control intelligent electric energy meter built-in switch, propose a kind of
Built-in switch fault detect can be achieved takes control intelligent electric energy meter.
Realize that technical scheme is as follows, a kind of achievable built-in switch fault detect takes control intelligent electric energy meter,
The intelligent electric energy meter can be by detecting built-in switch in the fluctuation of two terminal voltages at different moments and the electric current flowed through, and it is accurate to obtain
Resistance value, realize built-in switch failure automatic detection；The built-in switch includes first switch, second switch and the 3rd is opened
It closes.
A kind of achievable built-in switch fault detect of the present invention takes control intelligent electric energy meter, including the first current transformer,
Second current transformer, first switch, second switch, third switch, first resistor, second resistance, first voltage collecting unit,
Second voltage collecting unit, tertiary voltage collecting unit, the 4th voltage acquisition unit, DSP, A/D converter, temperature sensor,
Control unit and display.
One end of first switch is connected with the neutral conductor, and one end of the other end and the first current transformer first side winding connects
It connects；The other end of first current transformer first side winding is connected with load；First Current Transformer Secondary side winding and first
The input terminal connection of resistor coupled in parallel, one end and converter, other end ground connection；It is opened with first one end of first voltage collecting unit
The input terminal of one end connection of pass, the other end and converter connects；One end of second voltage collecting unit and first switch
The other end connects, and the input terminal of the other end and converter connects；Second switch and the 3rd switch in parallel；One end of second switch
It is connected with phase line, the other end is connected with one end of the second current transformer first side winding；Second current transformer primary side around
The other end of group is connected with load；Second Current Transformer Secondary side winding is in parallel with second resistance, one end and converter
Input terminal connects, other end ground connection；One end of tertiary voltage collecting unit and one end of second switch connect, tertiary voltage acquisition
The other end of unit and the input terminal of converter connect；One end of 4th voltage acquisition unit and the other end of second switch connect
It connects, the other end of the 4th voltage acquisition unit and the input terminal of converter connect；The input of the output terminal and DSP of converter
End connection；The output terminal of DSP is connected with the output terminal of display and control unit；Control unit respectively with first switch, second
The control terminal connection of switch and the 3rd switch；The output of temperature sensor is interconnected with the input terminal of DSP.
The detection method of the first switch resistance value is as follows：
Certain moment t1；The voltage V of first voltage sampling unit acquisition first switch K1 one end11, second voltage sampling unit
Gather the voltage V of the first switch K1 other ends21, the electric current for flowing through first switch K1 that the first Current Transmit 1 measures is
I11；Certain moment t2, the voltage V of first voltage sampling unit acquisition first switch K1 one end12, second voltage sampling unit acquisition the
The voltage V of the one switch K1 other ends22, the electric current for flowing through first switch K1 that the first Current Transmit 1 measures is I12；First
Voltage sampling unit temperature compensation coefficient is C1；Second voltage sampling unit temperature compensation coefficient is C2；If current fluctuation limit value is
If, work as satisfaction | I11-I12|≥IfWhen, the resistance R of first switch K1K1It can be obtained by following formula：
C1And C2, the data that DSP is transferred to according to temperature sensor are determined.
The detection method of the second switch resistance value is as follows：
When determining the state of second switch K2, second switch K2 need to be closed, disconnects the 3rd switch K3；Certain moment t1, the 3rd
The voltage V of voltage sampling unit acquisition second switch K2 one end31, the 4th voltage sampling unit acquisition second switch K2 other ends
Voltage V41, the electric current for flowing through second switch K2 that the second Current Transmit 2 measures is I21；Certain moment t2, tertiary voltage sampling
The voltage V of unit acquisition second switch K2 one end32, the voltage V of the 4th voltage sampling unit acquisition second switch K2 other ends42,
The electric current for flowing through second switch K2 that second Current Transmit 2 measures is I22；C3For tertiary voltage sampling unit temperature-compensating
Coefficient, C4For the 4th voltage sampling unit temperature compensation coefficient；Work as satisfaction | I21-I22|≥IfWhen, the resistance R of second switch K2K2
It can be obtained by following formula：
C3And C4The data that DSP is transferred to according to temperature sensor are determined.
The detection method of the second switch resistance value is as follows：
When determining the state of the 3rd switch K3, the 3rd switch K3 need to be closed, disconnects second switch K2, at this time the 3rd switch K3
Resistance RK3The resistance R of computational methods and second switch K2K2It is identical.
The intelligent electric energy meter to take control step as follows：
(1) when electricity consumption demand charge remaining sum is enough, DSP outputs signal to control unit, and control first switch K1 is closed, the
Three switch K3 are disconnected, and second switch K2 is closed, normally to electricity consumption customer power supply；
(2) for electricity consumption demand charge when Sorry, your ticket has not enough value, DSP outputs signal to control unit, and control first switch K1 is closed, the
Three switch K3 are disconnected, and second switch K2 is disconnected, and is stopped to electricity consumption customer power supply；
(3) should restore electricity after electricity consumption user pays arrears the owed electricity charge, DSP outputs signal to control unit, control first
It switchs K1 to be closed, the 3rd switch K3 is disconnected, and second switch K2 is closed；
(4) electricity consumption demand charge is when Sorry, your ticket has not enough value, if second switch K2 breaks down and leads to not turn off, DSP outputs
Signal is disconnected to control unit, control first switch K1, and the 3rd switch K3 is disconnected, and is stopped to electricity consumption customer power supply；Electricity consumption user
It should restore electricity after the owed electricity charge are paid arrears, if second switch K2 breaks down and leads to not be closed, DSP is outputed signal to
Control unit, control first switch K1 are closed, and the 3rd switch K3 is closed；The switches of second switch K2 and the 3rd K3 should design interlocking,
It avoids being closed at causing short trouble.
The definite method of the first voltage sampling unit penalty coefficient C1：
The voltage signal of standard voltage source outputting standard, first voltage sampling unit are in parallel with standard voltmeter；Using as
The first voltage sampling unit of tested product is placed in high-low temperature chamber, setting reference temperature T0It is and single by comparing first voltage sampling
Value between member and standard voltmeter, obtains relative error；By controlling the temperature of high-low temperature chamber, it is single to change first voltage sampling
Environment temperature residing for member simultaneously obtains corresponding relative error；The relation table between temperature change and relative error is ultimately formed,
Obtain corresponding penalty coefficient；The temperature of the first sampling unit is detected by temperature sensor in electric energy meter, is obtained corresponding
Penalty coefficient C1.
After the same method, second voltage sampling unit C2, tertiary voltage sampling unit C3 and the 4th voltage be can obtain
Penalty coefficient C2, C3 and C4 of sampling unit C4.
The invention has the advantages that electricity charge balance amount information of the present invention according to electricity consumption user, is controlled by DSP in three
Switch-off and closure are put, realization reliably takes control；Detection built-in switch in the fluctuation of two terminal voltages at different moments and flows through
Electric current, and data transmitted according to electric energy meter inner sensor to DSP, the penalty coefficient of each voltage acquisition unit of real time modifying,
Accurate resistance value is obtained, realizes the automatic detection of built-in switch failure.
Description of the drawings
Fig. 1 is the principle of the present invention schematic diagram；
Fig. 2 is the expense control flow chart of the present invention；
Fig. 3 is the method flow diagram of present invention measurement switch K1 resistance；
Fig. 4 is to determine the penalty coefficient C of first voltage sampling unit1Method schematic.
Specific embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings：
It is the principle of the present invention schematic diagram shown in Fig. 1.
A kind of achievable built-in switch fault detect of the present embodiment takes control intelligent electric energy meter, including the first Current Mutual Inductance
Device, the second current transformer, first switch, second switch, third switch, first resistor, second resistance, first voltage acquisition are single
Member, second voltage collecting unit, tertiary voltage collecting unit, the 4th voltage acquisition unit, DSP, A/D converter, temperature sensing
Device, control unit and display.
One end of first switch K1 is connected with the neutral conductor, and the one of 1 first side winding of the other end and the first Current Transmit
End connection；The other end of first Current Transmit, 1 first side winding is connected with load；First Current Transmit, 1 secondary side
Winding is in parallel with first resistor R1, the input terminal connection of one end and converter, other end ground connection；First voltage collecting unit
One end is connected with one end of first switch K1, the input terminal connection of the other end and converter；The one of second voltage collecting unit
End is connected with the other end of first switch K1, the input terminal connection of the other end and converter；The switches of second switch K2 and the 3rd
K3 is in parallel；One end of second switch K2 is connected with phase line, and one end of 2 first side winding of the other end and the second Current Transmit connects
It connects；The other end of second current transformer first side winding is connected with load；Second Current Transmit, 2 secondary side winding and the
Two resistance R2 are in parallel, and the input terminal of one end and converter connects, other end ground connection；One end of tertiary voltage collecting unit and the
The input terminal of one end connection of two switch K2, the other end and converter connects；One end and second of 4th voltage acquisition unit
Switch the other end connection of K2, the input terminal connection of the other end and converter；The output terminal of converter and the input terminal of DSP
Connection；The output terminal of DSP is connected with the output terminal of display and control unit；Control unit respectively with first switch K1, second
Switch the control terminal connection of the switches of K2 and the 3rd K3；The output of temperature sensor is connected with the input terminal of DSP.
Fig. 2 show the expense control flow chart of the present invention.
A kind of specific steps for taking control intelligent electric energy meter expense flow control journey of achievable built-in switch fault detect of the present embodiment
It is as follows：
Step 1：When electricity consumption demand charge remaining sum is enough, DSP outputs signal to control unit, and control first switch K1 is closed
It closes, the 3rd switch K3 is disconnected, and second switch K2 is closed, normally to electricity consumption customer power supply；
Step 2：For electricity consumption demand charge when Sorry, your ticket has not enough value, DSP outputs signal to control unit, and control first switch K1 is closed
It closes, the 3rd switch K3 is disconnected, and second switch K2 is disconnected, and is stopped to electricity consumption customer power supply；
Step 3：Electricity consumption user should restore electricity after the owed electricity charge are paid arrears, and DSP outputs signal to control unit, control the
One switch K1 is closed, and the 3rd switch K3 is disconnected, and second switch K2 is closed；
Step 4：For electricity consumption demand charge when Sorry, your ticket has not enough value, if second switch K2 breaks down and leads to not turn off, DSP is defeated
Go out signal to control unit, control first switch K1 is disconnected, and the 3rd switch K3 is disconnected, and is stopped to electricity consumption customer power supply；Electricity consumption is used
Family should restore electricity after the owed electricity charge are paid arrears, if second switch K2 breaks down and leads to not be closed, DSP output signals
To control unit, control first switch K1 is closed, and the 3rd switch K3 is closed；The switches of second switch K2 and the 3rd K3 should be designed mutually
Lock, avoids being closed at causing short trouble.
Fig. 3 is the method flow diagram of present invention measurement first switch K1 resistance, is as follows：
Step 1：Certain moment t1, the voltage V of first voltage sampling unit acquisition first switch K1 one end11, second voltage adopts
Sample unit gathers the voltage V of the first switch K1 other ends21, the electricity for flowing through first switch K1 that the first Current Transmit 1 measures
It flows for I11；
Step 2：Certain moment t2, the voltage V of first voltage sampling unit acquisition first switch K1 one end12, second voltage adopts
Sample unit gathers the voltage V of the first switch K1 other ends22, the electricity for flowing through first switch K1 that the first Current Transmit 1 measures
It flows for I12；
Step 3：If current fluctuation limit value is If, judge whether to meet | I11-I12|≥If；No satisfaction, enters step 4；If
It is unsatisfactory for, enters step 6；
Step 4：The temperature compensation coefficient of first voltage sampling unit and second voltage sampling unit is respectively C1And C2, can
The data that DSP is transferred to according to temperature sensor are determined, the resistance R of first switch K1K1It can be obtained by following formula：
Step 5：Preserve the resistance R of first switch K1K1；
Step 6：Constant duration Δ t, and return to step 1.
When determining the state of second switch K2, second switch K2 need to be closed, disconnects the 3rd switch K3, at this time second switch K2
Resistance calculations method and first switch K1 resistance RK1It is identical；When determining the state of the 3rd switch K3, the 3rd switch need to be closed
K3 disconnects second switch K2, at this time the resistance R of the resistance calculations method of the 3rd switch K3 and first switch K1K1It is identical.
Fig. 4 is to determine the method schematic of first voltage sampling unit penalty coefficient C1, to determine each voltage sampling unit
Penalty coefficient, the voltage signal of standard voltage source outputting standard, first voltage sampling unit is in parallel with standard voltmeter；It will make
First voltage sampling unit to be tested product is placed in high-low temperature chamber, setting reference temperature T0And it is sampled by comparing first voltage
Value between unit and standard voltmeter, obtains relative error；By controlling the temperature of high-low temperature chamber, change first voltage sampling
Environment temperature residing for unit simultaneously obtains corresponding relative error；Ultimately form the relation between temperature change and relative error
Table obtains corresponding penalty coefficient；The temperature of the first sampling unit is detected by temperature sensor in electric energy meter, is corresponded to
Penalty coefficient C1.
After the same method, second voltage sampling unit C2, tertiary voltage sampling unit C3 and the 4th voltage be can obtain
Penalty coefficient C2, C3 and C4 of sampling unit C4.
Undeclared part involved in the present invention is same as the prior art or is realized using the prior art.
Claims (7)
1. a kind of achievable built-in switch fault detect takes control intelligent electric energy meter, which is characterized in that the intelligent electric energy meter energy
By detecting built-in switch in the fluctuation of two terminal voltages at different moments and the electric current flowed through, accurate resistance value is obtained, in realization
Put the automatic detection of switch fault；The built-in switch includes first switch, second switch and the 3rd switch.
2. a kind of achievable built-in switch fault detect according to claim 1 takes control intelligent electric energy meter, feature exists
In the Intelligent current table is opened including the first current transformer, the second current transformer, first switch, second switch, the 3rd
Pass, first resistor, second resistance, first voltage collecting unit, second voltage collecting unit, tertiary voltage collecting unit, the 4th
Voltage acquisition unit, DSP, A/D converter, temperature sensor, control unit and display；
One end of first switch is connected with the neutral conductor, and the other end is connected with one end of the first current transformer first side winding；The
The other end of one current transformer first side winding is connected with load；First Current Transformer Secondary side winding and first resistor are simultaneously
The input terminal of connection, one end and converter connects, other end ground connection；One end of first voltage collecting unit and the one of first switch
The input terminal of end connection, the other end and converter connects；One end of second voltage collecting unit and the other end of first switch
The input terminal of connection, the other end and converter connects；Second switch and the 3rd switch in parallel；One end of second switch and phase line
Connection, the other end are connected with one end of the second current transformer first side winding；Second current transformer first side winding it is another
One end is connected with load；Second Current Transformer Secondary side winding is in parallel with second resistance, the input terminal of one end and converter
Connection, other end ground connection；One end of tertiary voltage collecting unit and one end of second switch connect, tertiary voltage collecting unit
The input terminal of the other end and converter connects；One end of 4th voltage acquisition unit and the other end of second switch connect, the
The other end of four voltage acquisition units and the input terminal of converter connect；The output terminal of converter and the input terminal of DSP connect
It connects；The output terminal of DSP is connected with the output terminal of display and control unit；Control unit respectively with first switch, second switch
And the 3rd switch control terminal connection；The output of temperature sensor is interconnected with the input terminal of DSP.
3. a kind of achievable built-in switch fault detect according to claim 1 takes control intelligent electric energy meter, feature exists
In the detection method of the first switch resistance value is as follows：
Certain moment t1；The voltage V of first voltage sampling unit acquisition first switch K1 one end11, the acquisition of second voltage sampling unit
The voltage V of the first switch K1 other ends21, the electric current for flowing through first switch K1 that the first Current Transmit 1 measures is I11；Certain
Moment t2, the voltage V of first voltage sampling unit acquisition first switch K1 one end12, the acquisition of second voltage sampling unit first opens
Close the voltage V of the K1 other ends22, the electric current for flowing through first switch K1 that the first Current Transmit 1 measures is I12；First voltage
Sampling unit temperature compensation coefficient is C1；Second voltage sampling unit temperature compensation coefficient is C2；If current fluctuation limit value is If,
Work as satisfaction | I11-I12|≥IfWhen, the resistance R of first switch K1K1It can be obtained by following formula：
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C1And C2, the data that DSP is transferred to according to temperature sensor are determined.
4. a kind of achievable built-in switch fault detect according to claim 1 takes control intelligent electric energy meter, feature exists
In the detection method of the second switch resistance value is as follows：
When determining the state of second switch K2, second switch K2 need to be closed, disconnects the 3rd switch K3；Certain moment t1, tertiary voltage adopts
The voltage V of sample unit acquisition second switch K2 one end31, the voltage of the 4th voltage sampling unit acquisition second switch K2 other ends
V41, the electric current for flowing through second switch K2 that the second Current Transmit 2 measures is I21；Certain moment t2, tertiary voltage sampling unit
Gather the voltage V of second switch K2 one end32, the voltage V of the 4th voltage sampling unit acquisition second switch K2 other ends42, second
What Current Transmit 2 measured flows through the electric current of second switch K2 for I22；C3For tertiary voltage sampling unit temperature compensation coefficient,
C4For the 4th voltage sampling unit temperature compensation coefficient；Work as satisfaction | I21-I22|≥IfWhen, the resistance R of second switch K2K2It can pass through
Following formula obtains：
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C3And C4The data that DSP is transferred to according to temperature sensor are determined.
5. a kind of achievable built-in switch fault detect according to claim 1 takes control intelligent electric energy meter, feature exists
In the detection method of the second switch resistance value is as follows：
When determining the state of the 3rd switch K3, the 3rd switch K3 need to be closed, disconnects second switch K2, at this time the electricity of the 3rd switch K3
Hinder RK3The resistance R of computational methods and second switch K2K2It is identical.
6. a kind of achievable built-in switch fault detect according to claim 1 takes control intelligent electric energy meter, feature exists
In, the intelligent electric energy meter to take control step as follows：
(1) when electricity consumption demand charge remaining sum is enough, DSP outputs signal to control unit, and control first switch K1 is closed, and the 3rd opens
It closes K3 to disconnect, second switch K2 is closed, normally to electricity consumption customer power supply；
(2) for electricity consumption demand charge when Sorry, your ticket has not enough value, DSP outputs signal to control unit, and control first switch K1 is closed, and the 3rd opens
It closes K3 to disconnect, second switch K2 is disconnected, and is stopped to electricity consumption customer power supply；
(3) should restore electricity after electricity consumption user pays arrears the owed electricity charge, DSP outputs signal to control unit, controls first switch
K1 is closed, and the 3rd switch K3 is disconnected, and second switch K2 is closed；
(4) electricity consumption demand charge is when Sorry, your ticket has not enough value, if second switch K2 breaks down and leads to not turn off, DSP output signals
To control unit, control first switch K1 is disconnected, and the 3rd switch K3 is disconnected, and is stopped to electricity consumption customer power supply；Electricity consumption user is by institute
The deficient electricity charge should restore electricity after paying arrears, if second switch K2 breaks down and leads to not be closed, DSP outputs signal to control
Unit, control first switch K1 are closed, and the 3rd switch K3 is closed；The switches of second switch K2 and the 3rd K3 should design interlocking, avoid
It is closed at causing short trouble.
7. a kind of achievable built-in switch fault detect according to claim 3 takes control intelligent electric energy meter, feature exists
In the definite method of the first voltage sampling unit penalty coefficient C1：
The voltage signal of standard voltage source outputting standard, first voltage sampling unit are in parallel with standard voltmeter；It will be used as tested
The first voltage sampling unit of product is placed in high-low temperature chamber, setting reference temperature T0And by comparing first voltage sampling unit with
Value between standard voltmeter, obtains relative error；By controlling the temperature of high-low temperature chamber, change first voltage sampling unit institute
The environment temperature at place simultaneously obtains corresponding relative error；The relation table between temperature change and relative error is ultimately formed, is obtained
Corresponding penalty coefficient；The temperature of the first sampling unit is detected by temperature sensor in electric energy meter, obtains corresponding compensation
Coefficient C1.
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| CN201810101911.1A CN108120951B (en) | 2018-02-01 | 2018-02-01 | Cost control intelligent electric energy meter capable of realizing built-in switch fault detection |
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| CN201810101911.1A CN108120951B (en) | 2018-02-01 | 2018-02-01 | Cost control intelligent electric energy meter capable of realizing built-in switch fault detection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110927657A (en) * | 2019-12-20 | 2020-03-27 | 深圳供电局有限公司 | Electric energy meter error correction method, device and equipment |
Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090014902A (en) * | 2007-08-07 | 2009-02-11 | 엘에스산전 주식회사 | Electricity meter with a function for detecting failure of current transformer |
| CN201689166U (en) * | 2009-11-14 | 2010-12-29 | 甘肃电力科学研究院 | Device for calibrating MOA leakage current online testing instrument |
| CN101980042A (en) * | 2010-10-20 | 2011-02-23 | 河南大学 | Design scheme for on-spot calibration instrument of small-sized single-phase electric energy meter |
| CN201846132U (en) * | 2009-12-29 | 2011-05-25 | 陈家斌 | Intelligent power supply device for building |
| CN202383770U (en) * | 2011-12-27 | 2012-08-15 | 江西景德镇供电公司 | Intelligent electric meter fee control device |
| CN202455083U (en) * | 2012-02-02 | 2012-09-26 | 贵州电力试验研究院 | Low-voltage load unbalance adjusting and intelligent reactive dynamic compensation device |
| CN102830255A (en) * | 2012-08-23 | 2012-12-19 | 王金泽 | Smart electricity meter with function of monitoring and protecting power failure |
| US20140015456A1 (en) * | 2011-03-29 | 2014-01-16 | Panasonic Corporation | Vehicle power supply device |
| CN103618381A (en) * | 2013-11-13 | 2014-03-05 | 国家电网公司 | Protecting and measuring integrated comprehensive distribution box |
| CN103913719A (en) * | 2014-04-18 | 2014-07-09 | 国家电网公司 | Method for judging mistaken powering-down fault causes of single-phase carrier intelligent electric meter |
| CN104283307A (en) * | 2014-10-29 | 2015-01-14 | 国家电网公司 | Intelligent operation and power distribution integrated high-voltage switch |
| US20160238646A1 (en) * | 2015-02-17 | 2016-08-18 | Commissariat â l'Energie Atomique et aux Energies | Device for measuring an electric field in a conducting medium and method of calibrating such a device |
| CN106338704A (en) * | 2015-07-14 | 2017-01-18 | 重庆龙源科技产业发展有限公司 | Real-time detection device suitable for failure and electricity larceny prevention of metering current transformer |
| CN106410946A (en) * | 2016-12-01 | 2017-02-15 | 威胜电气有限公司 | Power supply circuit applied to distribution line fault location device and power supply method thereof |
| CN106771431A (en) * | 2017-01-18 | 2017-05-31 | 国网江西省电力公司电力科学研究院 | A kind of intelligent electric energy meter of detectable on off state |
| CN206411255U (en) * | 2017-01-24 | 2017-08-15 | 江西科晨高新技术发展有限公司 | A kind of electric energy meter impulse current test device |
| CN107528388A (en) * | 2017-09-19 | 2017-12-29 | 中国计量大学 | Lump type smart home electricity consumption management in details system |
| CN107561478A (en) * | 2016-06-30 | 2018-01-09 | 湖南东瑞智能仪表有限公司 | A kind of electric energy meter complete machine hardware fault automatic detection device and its detection method |
| CN208013402U (en) * | 2018-02-01 | 2018-10-26 | 国网江西省电力有限公司电力科学研究院 | A kind of achievable built-in switch fault detect takes control intelligent electric energy meter |
-
2018
- 2018-02-01 CN CN201810101911.1A patent/CN108120951B/en active Active
Patent Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090014902A (en) * | 2007-08-07 | 2009-02-11 | 엘에스산전 주식회사 | Electricity meter with a function for detecting failure of current transformer |
| CN201689166U (en) * | 2009-11-14 | 2010-12-29 | 甘肃电力科学研究院 | Device for calibrating MOA leakage current online testing instrument |
| CN201846132U (en) * | 2009-12-29 | 2011-05-25 | 陈家斌 | Intelligent power supply device for building |
| CN101980042A (en) * | 2010-10-20 | 2011-02-23 | 河南大学 | Design scheme for on-spot calibration instrument of small-sized single-phase electric energy meter |
| US20140015456A1 (en) * | 2011-03-29 | 2014-01-16 | Panasonic Corporation | Vehicle power supply device |
| CN202383770U (en) * | 2011-12-27 | 2012-08-15 | 江西景德镇供电公司 | Intelligent electric meter fee control device |
| CN202455083U (en) * | 2012-02-02 | 2012-09-26 | 贵州电力试验研究院 | Low-voltage load unbalance adjusting and intelligent reactive dynamic compensation device |
| CN102830255A (en) * | 2012-08-23 | 2012-12-19 | 王金泽 | Smart electricity meter with function of monitoring and protecting power failure |
| CN103618381A (en) * | 2013-11-13 | 2014-03-05 | 国家电网公司 | Protecting and measuring integrated comprehensive distribution box |
| CN103913719A (en) * | 2014-04-18 | 2014-07-09 | 国家电网公司 | Method for judging mistaken powering-down fault causes of single-phase carrier intelligent electric meter |
| CN104283307A (en) * | 2014-10-29 | 2015-01-14 | 国家电网公司 | Intelligent operation and power distribution integrated high-voltage switch |
| US20160238646A1 (en) * | 2015-02-17 | 2016-08-18 | Commissariat â l'Energie Atomique et aux Energies | Device for measuring an electric field in a conducting medium and method of calibrating such a device |
| CN106338704A (en) * | 2015-07-14 | 2017-01-18 | 重庆龙源科技产业发展有限公司 | Real-time detection device suitable for failure and electricity larceny prevention of metering current transformer |
| CN107561478A (en) * | 2016-06-30 | 2018-01-09 | 湖南东瑞智能仪表有限公司 | A kind of electric energy meter complete machine hardware fault automatic detection device and its detection method |
| CN106410946A (en) * | 2016-12-01 | 2017-02-15 | 威胜电气有限公司 | Power supply circuit applied to distribution line fault location device and power supply method thereof |
| CN106771431A (en) * | 2017-01-18 | 2017-05-31 | 国网江西省电力公司电力科学研究院 | A kind of intelligent electric energy meter of detectable on off state |
| CN206411255U (en) * | 2017-01-24 | 2017-08-15 | 江西科晨高新技术发展有限公司 | A kind of electric energy meter impulse current test device |
| CN107528388A (en) * | 2017-09-19 | 2017-12-29 | 中国计量大学 | Lump type smart home electricity consumption management in details system |
| CN208013402U (en) * | 2018-02-01 | 2018-10-26 | 国网江西省电力有限公司电力科学研究院 | A kind of achievable built-in switch fault detect takes control intelligent electric energy meter |
Non-Patent Citations (2)
| Title |
|---|
| 匡洪海;张曙云;曾丽琼;李圣清;周志伟;: "基于GPRS和GPS的农村智能配电网远程监控***设计", 电工电能新技术, no. 04 * |
| 沈鑫;赵丹妮;曹敏;: "基于物联网技术的电能计量装置远程在线监测及分析平台研究", 电测与仪表, no. 1 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110927657A (en) * | 2019-12-20 | 2020-03-27 | 深圳供电局有限公司 | Electric energy meter error correction method, device and equipment |
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