CN206497142U - A kind of intelligent electric energy meter of detectable on off state - Google Patents
A kind of intelligent electric energy meter of detectable on off state Download PDFInfo
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- CN206497142U CN206497142U CN201720055298.5U CN201720055298U CN206497142U CN 206497142 U CN206497142 U CN 206497142U CN 201720055298 U CN201720055298 U CN 201720055298U CN 206497142 U CN206497142 U CN 206497142U
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Abstract
A kind of intelligent electric energy meter of detectable on off state, including first switch, first voltage sensor, the first current transformer, first resistor, second switch, second voltage sensor, the second current transformer, second resistance, A/D converter, DSP, control unit and display unit.The utility model, which is provided, provides a kind of intelligent electric energy meter of detectable on off state, the state of built-in relay switch can in real time be monitored, the state of automatic decision relay switch, then it is easy to find the failure of built-in relay switch in time, can be so switched by repairing or changing power transfer relay.
Description
Technical field
The utility model is related to a kind of intelligent electric energy meter of detectable on off state, category Electric Energy Metering Technology field.
Background technology
With the development of intelligent grid, intelligent electric energy meter is widely used in electricity as one of its important component
In net, measured and intelligent control to the electric energy used to electricity consumption user.Can electric energy meter internal or external setting after
Electric switch, electric energy meter consumes the collection and storage of electric energy to electricity consumption user institute bringing onto load, according to the electricity charge calculated, judges to use
Whether the electricity charge of electric user are paid up.If electricity consumption user does not have timely electricity payment, can by control relay switch-off,
So that power network stops to load supplying used in electricity consumption user；After electricity consumption user pays up the electricity charge, it can be switched by control relay
Closure so that load supplying used in power system restoration to electricity consumption user.
The frequent movement of relay switch can cause it easily to break down, and add the state of relay switch and can not monitor,
It can cause when electricity consumption subscriber arrearage, it is impossible to which the situation of normal turn-off relay switch occurs.Certainly, when electricity consumption user pays up expense
With rear, the situation that can not close relay switch also occurs, causes generation interests between electricity consumption user and electric company to be entangled
Confusingly.If electric energy meter can in real time be monitored to the state of built-in relay switch in itself, the shape of automatic decision relay switch
State, then be easy to find the failure of built-in relay switch in time, can so be switched by repairing or changing power transfer relay, it is to avoid
Above-mentioned the occurrence of.Lack the intelligent electric energy meter with this kind of function at present.
The content of the invention
The purpose of this utility model is that there is provided a kind of intelligence of detectable on off state in order to overcome the deficiencies in the prior art
Energy electric energy meter, the failure of built-in relay switch can be found in time, be easy to that power transfer relay switch is repaired and changed.
In order to solve the above-mentioned technical problem, the utility model is to be achieved through the following technical solutions：
A kind of intelligent electric energy meter of detectable on off state, including first switch, first voltage sensor, the first electric current are mutual
Sensor, first resistor, second switch, second voltage sensor, the second current transformer, second resistance, A/D converter, DSP,
Control unit and display unit.
The first switch is connected on phase line, and the end of input two of first voltage sensor and two ends of first switch connect
Connect, output end and A/D converter the input connection of first voltage sensor；One end of the first winding of first current transformer
It is connected with one end of first switch, a terminal of one end connection load of the first winding of the first current transformer；First electricity
The secondary winding and first resistor of current transformer are in parallel, and one end is connected with A/D converter input, other end ground connection；Second
Switch is connected on the neutral conductor, the end of input two of second voltage sensor and the two ends connection of second switch, second voltage sensing
Output end and A/D converter the input connection of device；One end of the first winding of second current transformer and the one of second switch
End connection；Another terminal of the other end connection load of the first winding of second current transformer；Second current transformer
Secondary winding and second resistance are in parallel, and one end is connected with A/D converter input, other end ground connection；The output of A/D converter
End and the connection of DSP inputs, DSP output ends and display connection, DSP another output end are connected with control unit output end,
Output end connection and first switch and the second switch of control unit.
First current transformer detects the electric current for flowing through first switch, and analog signal is changed into digital letter by A/D converter
DSP number is transferred to, analog signal is changed into number by the voltage at first voltage sensor detection first switch two end, A/D converters
Word signal is transferred to DSP；Second current transformer detects the electric current for flowing through second switch, and A/D converter converts analog signal
Into digital data transmission to DSP, the voltage at second voltage sensor detection second switch two end, A/D converters are by analog signal
Digital data transmission is changed into DSP；Data processing, calculating are obtained first switch and the resistance value of second switch, and root by DSP
Discriminatory analysis first switch and the state of second switch are carried out according to resistance value；Display unit can show that first switch and second is opened
The resistance value and its state of pass.
Compared with prior art, the beneficial effects of the utility model are：The utility model, which is provided, provides a kind of detectable
The intelligent electric energy meter of on off state, can in real time be monitored, automatic decision relay switch to the state of built-in relay switch
State, then be easy to find the failure of built-in relay switch in time, can so pass through maintenance or change power transfer relay and switch.
Brief description of the drawings
Fig. 1 is a kind of intelligent electric energy meter circuit structure diagram of detectable on off state of the utility model.
Embodiment
Embodiment of the present utility model is as shown in Figure 1.
A kind of intelligent electric energy meter of detectable on off state of the present embodiment, including first switch K1, first voltage sensor
1st, the first Current Transmit 1, first resistor R1, second switch K2, second voltage sensor 2, the second Current Transmit 2,
Second resistance R2, A/D converter, DSP, control unit and display unit.
The first switch K1 is connected on phase line N, the end of input two of first voltage sensor 1 and the two of first switch K1
End connection, output end and A/D converter the input connection of first voltage sensor 1；First Current Transmit 1 once around
One end of group is connected with first switch K1 one end, and the one of one end connection load of the first winding of the first Current Transmit 1
Individual terminal；The secondary winding and first resistor R1 of first Current Transmit 1 are in parallel, and one end connects with A/D converter input
Connect, other end ground connection；Second switch K2 is connected on neutral conductor L, the end of input two of second voltage sensor 2 and second switch K2
Two ends connection, second voltage sensor 2 output end and A/D converter input connection；The one of second Current Transmit 2
One end of secondary winding is connected with second switch K2 one end,；The other end connection of the first winding of second Current Transmit 2 is negative
Another terminal carried；The secondary winding and second resistance R2 of second Current Transmit 2 are in parallel, and one end and A/D converter
Input is connected, other end ground connection；Output end and DSP the inputs connection of A/D converter, DSP output ends and display connection,
DSP another output end is connected with control unit output end, and the output end connection of control unit is opened with first switch K1 and second
Close K2.
Second Current Transmit 2 detects the electric current I for flowing through second switch K22, A/D converter changes into analog signal
Digital data transmission is to DSP；The voltage V at the ends of the detection second switch of second voltage sensor 2 K2 bis-2, A/D converters, which will be simulated, to be believed
Number digital data transmission is changed into DSP；DSP is according to obtained data（Voltage V2 and electric current I2）, obtain second switch K2's
Resistance value（RC2=V2/I2）, DSP is according to obtained RC2Value is contrasted with preset value, is judged second switch K2 state and is passed through
Control unit control second switch K2 closure and shut-off；Second switch K2 resistance value RC2And its state can pass through display unit
Display.
Claims (2)
1. a kind of intelligent electric energy meter of detectable on off state, it is characterised in that the electric energy meter includes first switch, the first electricity
Pressure sensor, the first current transformer, first resistor, second switch, second voltage sensor, the second current transformer, second
Resistance, A/D converter, DSP, control unit and display unit；
The first switch is connected on phase line, the end of input two of first voltage sensor and the two ends connection of first switch；The
Output end and A/D converter the input connection of one voltage sensor；One end of the first winding of first current transformer and the
One end connection of one switch, a terminal of one end connection load of the first winding of the first current transformer；First electric current is mutual
The secondary winding and first resistor of sensor are in parallel, and one end is connected with A/D converter input, other end ground connection；Second switch
The neutral conductor, the end of input two of second voltage sensor and the two ends connection of second switch are connected on, second voltage sensor
Output end and the connection of A/D converter input；One end of the first winding of second current transformer and one end of second switch connect
Connect；Another terminal of the other end connection load of the first winding of second current transformer；Second current transformer it is secondary
Winding and second resistance are in parallel, and one end is connected with A/D converter input, other end ground connection；The output end of A/D converter and
DSP inputs are connected, and DSP output ends and display connection, DSP another output end are connected with control unit output end, controlled
Output end connection and first switch and the second switch of unit.
2. a kind of intelligent electric energy meter of detectable on off state according to claim 1, it is characterised in that first electricity
Current transformer, which is detected, flows through the electric current of first switch, the A/D converter by analog signal change into digital data transmission to
DSP；The voltage at first voltage sensor detection first switch two end；Analog signal is changed into number by the A/D converters
Word signal is transferred to DSP；The second current transformer detection flows through the electric current of second switch；The A/D converter will be simulated
Signal changes into digital data transmission to DSP；The voltage at second voltage sensor detection second switch two end, A/D converter will
Analog signal changes into digital data transmission to DSP；Data processing is calculated the electricity for obtaining first switch and second switch by DSP
Resistance, and discriminatory analysis first switch and the state of second switch are carried out according to resistance value；Display unit can show that first opens
Close the resistance value and its state with second switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720055298.5U CN206497142U (en) | 2017-01-18 | 2017-01-18 | A kind of intelligent electric energy meter of detectable on off state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720055298.5U CN206497142U (en) | 2017-01-18 | 2017-01-18 | A kind of intelligent electric energy meter of detectable on off state |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206497142U true CN206497142U (en) | 2017-09-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720055298.5U Expired - Fee Related CN206497142U (en) | 2017-01-18 | 2017-01-18 | A kind of intelligent electric energy meter of detectable on off state |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206497142U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2017
- 2017-01-18 CN CN201720055298.5U patent/CN206497142U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170915 Termination date: 20220118 |