CN206348433U - A kind of electric energy meter crosses Z-operation test system with on-load switch - Google Patents
A kind of electric energy meter crosses Z-operation test system with on-load switch Download PDFInfo
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- CN206348433U CN206348433U CN201621305311.XU CN201621305311U CN206348433U CN 206348433 U CN206348433 U CN 206348433U CN 201621305311 U CN201621305311 U CN 201621305311U CN 206348433 U CN206348433 U CN 206348433U
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- 238000012360 testing method Methods 0.000 title claims abstract description 21
- 238000001514 detection method Methods 0.000 claims abstract description 22
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims abstract description 21
- 239000004065 semiconductor Substances 0.000 claims description 23
- 239000003990 capacitor Substances 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 9
- 210000001367 artery Anatomy 0.000 claims description 5
- 210000003462 vein Anatomy 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 230000005622 photoelectricity Effects 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Abstract
The utility model crosses Z-operation test system with on-load switch there is provided a kind of electric energy meter, it is related to data processor circuit in electric energy meter on-load switch technical field of measurement and test, the system to be connected with MCU chip circuit, actual loading generation circuit and pulse signal generation circuit respectively；Alternating voltage zero-crossing detection circuit is connected with MCU chip circuit；Circuit occurs for actual loading and pulse signal generation circuit is also respectively connected with electric energy meter on-load switch；The system sends make pulse signal, to control the electric energy meter on-load switch closing of contact to electric energy meter in control make pulse output time when electric energy meter is off with on-load switch contact with on-load switch；When electric energy meter is in closure state with on-load switch contact, disjunction pulse signal is sent with on-load switch to electric energy meter in control disjunction pulse output time, to control the contact disjunction of electric energy meter on-load switch.
Description
Technical field
The utility model is related to electric energy meter on-load switch technical field of measurement and test, more particularly to a kind of electric energy meter is opened with load
Closed Z-operation test system.
Background technology
At present, State Grid Corporation of China carries forward vigorously intelligent electric energy meter popularization and application, and the end of the year 2014 built up power information collection
System, and the function of realization " full collection, all standing, control in full " comprehensively in 2015.End in by the end of May, 2014, national grid
Intelligent electric energy meter 2.0 hundred million has been installed by company, and every intelligent electric energy meter has corresponded to an on-load switch.Electric energy meter on-load switch
It can cut off and recover user load, be the Important Components for realizing remote bill control.At present, for electric energy meter on-load switch
It is that electric energy meter should send power-off signal, and control load is opened when the amount of money of overdrawing is less than the overdraw thresholding amount of money set to take prosecutor formula
Close interruption of power supply.Which does not consider user's actual loading situation only using demand charge situation as tripping operation foundation.If in load
Peak value moment tripping on-load switch, may cause switch contact gap to produce electric arc and occur ablation, circuit will be caused when serious
Burn and then burn electric energy meter, trigger fire, had a strong impact on user security electricity consumption.
Using the characteristics of every half of the cycle of 50Hz voltages, electric current all has zero-acrross ing moment is exchanged, control on-load switch disconnects
When just near current zero-crossing point, and when closing just near voltage over zero, can effectively reduce on-load switch contact electricity
Arc, so as to reduce pitting of contact.But crossing the performance boost effect of Z-operation needs to be verified by testing.But existing detection is set
It is standby to be tested mainly for electric energy meter with fundamental performance parameter of the on-load switch in random disjunction, closing course.Due to intelligence
Energy electric energy meter is receiving breaker tripping and closing action permission signal, performs breaker tripping and closing action command and sends control pulse, until bearing
The action moment that lotus switch contact begins breaking or closed, there is certain time interval.Therefore, traditional detection device in order to
Realize that control electric energy meter on-load switch, in the disjunction of AC load current zero-crossing point, in AC load voltage over zero closure, is needed
To apply DC load first, operation of recording pulse sends moment, on-load switch armature movement moment respectively by timer, then
Calculate time interval between the two.But because electric energy meter is with on-load switch actuation time is fast, action interval time is short, and zero passage is grasped
Make high for control time required precision, therefore traditional detection device and zero passage method of controlling operation thereof were difficult to ensure that Z-operation
The degree of accuracy.
Utility model content
Embodiment of the present utility model provides a kind of electric energy meter and Z-operation test system is crossed with on-load switch, to solve tradition
Detection device and zero passage method of controlling operation thereof the problem of be difficult to ensure that the degree of accuracy of Z-operation.
To reach above-mentioned purpose, the utility model is adopted the following technical scheme that：
A kind of electric energy meter crosses Z-operation test system, including data processor circuit, alternating voltage zero-crossing with on-load switch
Detect that circuit, pulse signal generation circuit occur for circuit, MCU chip circuit, actual loading；The data processor circuit respectively with
Circuit and pulse signal generation circuit connection occur for MCU chip circuit, actual loading；The alternating voltage zero-crossing detection circuit and institute
State the connection of MCU chip circuit；Circuit occurs for the actual loading and pulse signal generation circuit is also respectively connected with electric energy meter load
Switch；
The data processor circuit, for when electric energy meter is off with on-load switch contact, being closed in control
Close pulse output time and send control close commands to pulse signal generation circuit；Or, use on-load switch contact in electric energy meter
During in closure state, control disjunction order is sent to pulse signal generation circuit in control disjunction pulse output time；
The pulse signal generation circuit, for when receiving control close commands, being sent out to electric energy meter with on-load switch
Make pulse signal is sent, to control the electric energy meter on-load switch closing of contact；Or, when receiving control disjunction order, to
Electric energy meter sends disjunction pulse signal with on-load switch, to control the contact disjunction of electric energy meter on-load switch.
Further, the electric energy meter is crossed Z-operation test system with on-load switch and also included：Actuating mechanism driving power supply,
Voltage oscilloscope and current oscilloscope；The actuating mechanism driving power supply detects circuit and arteries and veins with the alternating voltage zero-crossing respectively
Signal generating circuit connection is rushed, to be powered；The voltage oscilloscope and current oscilloscope with data processor circuit and
Electric energy meter is connected with on-load switch；The voltage oscilloscope is used for the real-time ripple of load voltage for monitoring electric energy meter on-load switch
Shape；The current oscilloscope is used for the load current real-time waveform and the real-time ripple of coil current for monitoring electric energy meter on-load switch
Shape.
Specifically, the alternating voltage zero-crossing detection circuit, including：Zero line side, zero line, the first current-limiting resistance, second
Current-limiting resistance, the 3rd current-limiting resistance, the 4th current-limiting resistance, the first semiconductor diode, the second semiconductor diode, photoelectric coupling
Device, load resistance, filter capacitor；The zero line is loaded after the two-phase for exchanging input electricity with zero line side, respectively with the first current limliting
One end of resistance and the connection of one end of the 3rd current-limiting resistance；The other end of first current-limiting resistance and the 3rd current-limiting resistance it is another
One end connects one end of the second current-limiting resistance and one end of the 4th current-limiting resistance respectively；The other end of second current-limiting resistance and first
The positive pole connection of semiconductor diode；The other end of 4th current-limiting resistance is connected with the positive pole of the second semiconductor diode；First
The negative pole of the negative pole of semiconductor diode and the second semiconductor diode is all connected with the anode of photoelectrical coupler；Described the second half lead
The positive pole of body diode is also connected with the negative electrode of photoelectrical coupler；The colelctor electrode of photoelectrical coupler is loaded with positive 5 volts of voltage；Photoelectricity
The emitter stage of coupler is connected to one end of AC half wave signals output end, one end of load resistance and filter capacitor；
The AC half wave signals output end is used for the input interface for connecting MCU chip circuit；The other end of the load resistance and
The other end of filter capacitor links together, and is grounded.
A kind of electric energy meter that the utility model embodiment is provided crosses Z-operation test system with on-load switch, and the system includes
Data processor circuit, alternating voltage zero-crossing detection circuit, MCU chip circuit, actual loading occur circuit, pulse signal and occur electricity
Road；The data processor circuit occurs circuit with MCU chip circuit, actual loading respectively and pulse signal generation circuit is connected；
The alternating voltage zero-crossing detection circuit is connected with the MCU chip circuit；Circuit and pulse signal hair occur for the actual loading
Raw circuit is also respectively connected with electric energy meter on-load switch；The utility model embodiment can be at electric energy meter on-load switch contact
When off-state, make pulse signal is sent with on-load switch to electric energy meter in control make pulse output time, to control
The electric energy meter on-load switch closing of contact；When electric energy meter is in closure state with on-load switch contact, in control disjunction pulse
Output time sends disjunction pulse signal to electric energy meter with on-load switch, to control the contact disjunction of electric energy meter on-load switch.By
This is visible, and the utility model can accurately control electric energy meter on-load switch, and complete electric energy meter on-load switch crosses Z-operation,
Traditional detection device can be solved and the problem of zero passage method of controlling operation thereof was difficult to ensure that the degree of accuracy of Z-operation.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, before creative labor is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 crosses the structure of Z-operation test system for a kind of electric energy meter that the utility model embodiment is provided with on-load switch
Schematic diagram one；
Fig. 2 crosses the structure of Z-operation test system for a kind of electric energy meter that the utility model embodiment is provided with on-load switch
Schematic diagram two；
Fig. 3 detects the structural representation of circuit for the alternating voltage zero-crossing in the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belongs to the scope of the utility model protection.
As shown in figure 1, the utility model embodiment, which provides a kind of electric energy meter, crosses Z-operation test system 10 with on-load switch,
Occur circuit 14, arteries and veins including data processor circuit 11, alternating voltage zero-crossing detection circuit 12, MCU chip circuit 13, actual loading
Rush signal generating circuit 15.With MCU chip circuit 13, actual loading circuit 14 and arteries and veins occur for the data processor circuit 11 respectively
Signal generating circuit 15 is rushed to connect.Alternating voltage zero-crossing detection circuit 12 is connected with the MCU chip circuit 13；The actual loading is sent out
Raw circuit 14 and pulse signal generation circuit 15 are also respectively connected with electric energy meter on-load switch 16.
Circuit 14 occurs for the actual loading, can send load for testing voltage and test to electric energy meter on-load switch 16
With load current, and adjust the power-factor of load of electric energy meter on-load switch 16.
The data processor circuit 11, for according to action message of the electric energy meter with the electromagnetic mechanism of on-load switch 16,
Predefine electric energy meter on-load switch disjunction and touch duration and electric energy meter on-load switch closure shake-up duration.
The alternating voltage zero-crossing detection circuit 12 and the MCU chip circuit 13, for determining that electric energy meter is opened with load
The alternating voltage zero-crossing moment of pass.
The data processor circuit 11, the power-factor of load for obtaining electric energy meter on-load switch 16；According to institute
State the alternating voltage zero-crossing moment and the power-factor of load determines the alternating current zero-acrross ing moment of electric energy meter on-load switch；Root
Closed according to electric energy meter with contacts status, the electric energy meter of on-load switch with on-load switch disjunction shake-up duration and electric energy meter with on-load switch
Shake-up duration is closed to determine control disjunction pulse output delay duration and control make pulse output delay duration；Used in electric energy meter
When on-load switch contact is off, according to the alternating voltage zero-crossing moment and control make pulse output delay duration
It is determined that control make pulse output time, and send control to pulse signal generation circuit 15 in control make pulse output time
Close commands；Or, when electric energy meter is in closure state with on-load switch contact, according to the alternating current zero-acrross ing moment and
Control disjunction pulse output delay duration determines control disjunction pulse output time, and is controlling disjunction pulse output time to arteries and veins
Rush signal generating circuit 15 and send control disjunction order.
The pulse signal generation circuit 15, for when receiving control close commands, to electric energy meter on-load switch
Make pulse signal is sent, to control the electric energy meter on-load switch closing of contact；Or, when receiving control disjunction order,
Disjunction pulse signal is sent with on-load switch to electric energy meter, to control the contact disjunction of electric energy meter on-load switch.
Further, as shown in Fig. 2 the electric energy meter crosses Z-operation test system 10 with on-load switch also includes：Action
Mechanism driving power supply 17, voltage oscilloscope 18 and current oscilloscope 19.The actuating mechanism driving power supply 17 is handed over described respectively
Stream voltage zero-crossing detection circuit 12 and pulse signal generation circuit 15 are connected, to be powered.The voltage oscilloscope 18 and electricity
Stream oscillograph 19 is connected with data processor circuit 11 and electric energy meter on-load switch 16.The voltage oscilloscope 18 is used to supervise
Survey the load voltage real-time waveform of electric energy meter on-load switch 16；The current oscilloscope 19 is opened for monitoring electric energy meter with load
The load current real-time waveform and coil current real-time waveform of pass.
Specifically, as shown in figure 3, alternating voltage zero-crossing detection circuit 12, can include：Zero line side (N-terminal) 121,
The current-limiting resistance 123 of zero line (L ends) 122, first, the second current-limiting resistance 124, the 3rd current-limiting resistance 125, the 4th current-limiting resistance
126th, the first semiconductor diode 127, the second semiconductor diode 128, photoelectrical coupler 129, load resistance 130, filtered electrical
Hold 131；The zero line 122 is loaded with zero line side 121 after the two-phase for exchanging input electricity (can be 220 volts), respectively with first
One end of current-limiting resistance 123 and the connection of one end of the 3rd current-limiting resistance 125；The other end of first current-limiting resistance 123 and
The other end of three current-limiting resistances 125 connects one end of the second current-limiting resistance 124 and one end of the 4th current-limiting resistance 126 respectively；The
The other end of two current-limiting resistances 124 is connected with the positive pole of the first semiconductor diode 127；The other end of 4th current-limiting resistance 126
It is connected with the positive pole of the second semiconductor diode 128；The negative pole and the second semiconductor diode of first semiconductor diode 127
128 negative pole is all connected with the anode of photoelectrical coupler 129；The positive pole of second semiconductor diode 128 also with photoelectric coupling
The negative electrode connection of device 129.The colelctor electrode of photoelectrical coupler 129 is loaded with positive 5 volts of voltage；The emitter stage of photoelectrical coupler 129 point
One end of AC half wave signals output end 132, one end of load resistance 130 and filter capacitor 131 is not connected with；The exchange
Half-wave voltage signal output end 132 is used for the input interface for connecting MCU chip circuit 13；The other end of the load resistance 130 and
The other end of filter capacitor 131 links together, and is grounded.
By the structure described in above-mentioned Fig. 3, four current-limiting resistances can realize the current limliting of AC signal sampling input；First
Semiconductor diode can play halfwave rectifier effect；And the second semiconductor diode can protect the anode of photoelectrical coupler defeated
Enter end by the reverse damage of the first semiconductor diode；The photoelectrical coupler is used to isolate AC signal, and is transferred to weakness side
Give MCU chip circuit；Filter capacitor is used for the influence for avoiding noise signal.
Specifically, the data processor circuit 11 determine control make pulse output time to be pressed through for the alternating current
The sum of zero moment and control make pulse output delay duration；The control disjunction pulse that the data processor circuit 11 is determined is defeated
Go out the sum constantly for the alternating current zero-acrross ing moment and control disjunction pulse output delay duration.
A kind of electric energy meter that the utility model embodiment is provided crosses Z-operation test system with on-load switch, and the system includes
Data processor circuit, alternating voltage zero-crossing detection circuit, MCU chip circuit, actual loading occur circuit, pulse signal and occur electricity
Road；The data processor circuit occurs circuit with MCU chip circuit, actual loading respectively and pulse signal generation circuit is connected；
The alternating voltage zero-crossing detection circuit is connected with the MCU chip circuit；Circuit and pulse signal hair occur for the actual loading
Raw circuit is also respectively connected with electric energy meter on-load switch；The utility model embodiment can be at electric energy meter on-load switch contact
When off-state, make pulse signal is sent with on-load switch to electric energy meter in control make pulse output time, to control
The electric energy meter on-load switch closing of contact；When electric energy meter is in closure state with on-load switch contact, in control disjunction pulse
Output time sends disjunction pulse signal to electric energy meter with on-load switch, to control the contact disjunction of electric energy meter on-load switch.By
This is visible, and the utility model can accurately control electric energy meter on-load switch, and complete electric energy meter on-load switch crosses Z-operation,
Traditional detection device can be solved and the problem of zero passage method of controlling operation thereof was difficult to ensure that the degree of accuracy of Z-operation.
Specific embodiment is applied in the utility model to be set forth principle of the present utility model and embodiment, with
The explanation of upper embodiment is only intended to help and understands method of the present utility model and its core concept；Simultaneously for this area
Those skilled in the art, according to thought of the present utility model, will change in specific embodiments and applications, comprehensive
Upper described, this specification content should not be construed as to limitation of the present utility model.
Claims (3)
1. a kind of electric energy meter crosses Z-operation test system with on-load switch, it is characterised in that including data processor circuit, exchange
Circuit, pulse signal generation circuit occur for voltage zero-crossing detection circuit, MCU chip circuit, actual loading；The data processor electricity
Road occurs circuit with MCU chip circuit, actual loading respectively and pulse signal generation circuit is connected；The alternating voltage zero-crossing detection
Circuit is connected with the MCU chip circuit；Circuit occurs for the actual loading and pulse signal generation circuit is also respectively connected with electric energy
Table on-load switch；
The data processor circuit, for when electric energy meter is off with on-load switch contact, arteries and veins to be closed in control
Rush output time and send control close commands to pulse signal generation circuit；Or, it is in electric energy meter with on-load switch contact
During closure state, control disjunction order is sent to pulse signal generation circuit in control disjunction pulse output time；
The pulse signal generation circuit, for when receiving control close commands, sending and closing to electric energy meter on-load switch
Pulse signal is closed, to control the electric energy meter on-load switch closing of contact；Or, when receiving control disjunction order, to electric energy
Table sends disjunction pulse signal with on-load switch, to control the contact disjunction of electric energy meter on-load switch.
2. electric energy meter according to claim 1 crosses Z-operation test system with on-load switch, it is characterised in that also include：
Actuating mechanism driving power supply, voltage oscilloscope and current oscilloscope；The actuating mechanism driving power supply respectively with the alternating current
Zero cross detection circuit and pulse signal generation circuit connection are pressed, to be powered；The voltage oscilloscope and current oscilloscope are equal
It is connected with data processor circuit and electric energy meter with on-load switch；The voltage oscilloscope is used to monitor electric energy meter on-load switch
Load voltage real-time waveform；The current oscilloscope be used for monitor electric energy meter on-load switch load current real-time waveform and
Coil current real-time waveform.
3. electric energy meter according to claim 2 crosses Z-operation test system with on-load switch, it is characterised in that the exchange
Voltage zero-crossing detection circuit, including：Zero line side, zero line, the first current-limiting resistance, the second current-limiting resistance, the 3rd current-limiting resistance,
Four current-limiting resistances, the first semiconductor diode, the second semiconductor diode, photoelectrical coupler, load resistance, filter capacitor；Institute
State zero line to load after the two-phase for exchanging input electricity with zero line side, respectively one end with the first current-limiting resistance and the 3rd current-limiting resistance
One end connection；The other end of first current-limiting resistance and the other end of the 3rd current-limiting resistance connect the second current-limiting resistance respectively
One end and the 4th current-limiting resistance one end；The other end of second current-limiting resistance is connected with the positive pole of the first semiconductor diode；
The other end of 4th current-limiting resistance is connected with the positive pole of the second semiconductor diode；The negative pole of first semiconductor diode and second
The negative pole of semiconductor diode is all connected with the anode of photoelectrical coupler；The positive pole of second semiconductor diode also with photoelectricity coupling
The negative electrode connection of clutch；The colelctor electrode of photoelectrical coupler is loaded with positive 5 volts of voltage；The emitter stage of photoelectrical coupler is connected to
One end of AC half wave signals output end, one end of load resistance and filter capacitor；The AC half wave signals output end is used
In the input interface of connection MCU chip circuit；The other end of the load resistance and the other end of filter capacitor are connected to one
Rise, and be grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621305311.XU CN206348433U (en) | 2016-12-01 | 2016-12-01 | A kind of electric energy meter crosses Z-operation test system with on-load switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621305311.XU CN206348433U (en) | 2016-12-01 | 2016-12-01 | A kind of electric energy meter crosses Z-operation test system with on-load switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206348433U true CN206348433U (en) | 2017-07-21 |
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ID=59322305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621305311.XU Active CN206348433U (en) | 2016-12-01 | 2016-12-01 | A kind of electric energy meter crosses Z-operation test system with on-load switch |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108333506A (en) * | 2018-04-08 | 2018-07-27 | 杭州欣美成套电器制造有限公司 | A kind of nearly zero-signal extraction and alternating-current switch position detecting circuit |
-
2016
- 2016-12-01 CN CN201621305311.XU patent/CN206348433U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108333506A (en) * | 2018-04-08 | 2018-07-27 | 杭州欣美成套电器制造有限公司 | A kind of nearly zero-signal extraction and alternating-current switch position detecting circuit |
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