CN201638439U - Full-metering simulation device - Google Patents
Full-metering simulation device Download PDFInfo
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- CN201638439U CN201638439U CN2010201593209U CN201020159320U CN201638439U CN 201638439 U CN201638439 U CN 201638439U CN 2010201593209 U CN2010201593209 U CN 2010201593209U CN 201020159320 U CN201020159320 U CN 201020159320U CN 201638439 U CN201638439 U CN 201638439U
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Abstract
The utility model provides a full-metering simulation device used for simulating various wiring errors in an electric energy metering secondary loop, secondary loop load metering experiments and secondary loop pressure drop metering experiments. The device comprises two parts, wherein one part comprises a wiring switch module at the mutual inductor end of the device, a three-phase programmable control power supply, a current fictitious load and a voltage fictitious load, and the other part comprises a tail wiring switch module, a current fictitious load and a voltage fictitious load. Both parts and a PC are electrically connected with a signal transmission and control module, and the tail wiring switch module is also electrically connected with the meter. By adopting the current fictitious load and the voltage fictitious load, the secondary loop load and the secondary loop pressure drop of the electric energy metering loop are simulated; and by adopting the wiring switch module at the mutual inductor end and the tail wiring switch module, the possible 100 thousand wiring errors of the electric energy metering secondary loop are set, so that the device can provide more comprehensive training.
Description
Technical field
The utility model relates to a kind of full metering analogue means, the device of especially a kind of various wiring errors of energy comprehensive simulated electric energy metering secondary and secondary circuit load measurement, secondary circuit voltage drop experiment with measuring.
Background technology
In influencing electric energy metrical accuracy every, electric energy meter, mutual inductor, secondary circuit load, secondary circuit voltage drop, the correct wiring of secondary circuit all play crucial effects.The accuracy of electric energy meter, mutual inductor can be measured in testing laboratory.All the other every can only detections at the scene.The electric-power metering personnel should grasp the on-the-spot technical ability that detects secondary circuit load, secondary circuit voltage drop, secondary circuit wiring.At the demand that the electric-power metering personnel sharpen one's skills, the device of some training usefulness has appearred on the market.These devices are primarily aimed at false wiring: some is by manual toggle switch wiring error to be set, and some is to realize that by program control technology more than 1,000 kind of predetermined wiring error automaticallyes switch.But the wiring error of electric-power metering secondary circuit reality has kind more than 100,000, and existing false wiring device can't embody actual false wiring situation comprehensively.And never detect the device that gives training at secondary circuit load, secondary circuit voltage drop.
Summary of the invention
For solving the deficiencies in the prior art, the utility model provides a kind of full metering analogue means, the contingent wiring error that surpasses 100,000 kinds of electric-power metering secondary circuit can be set, and can give training at load detection, the voltage drop detection of secondary circuit.
Technical solution of the present utility model is finished like this, measures analogue means entirely and comprises:
The three-phase programmable power supply generates controlled interchange three-phase voltage, exchanges three-phase current, and its output terminal is connected to mutual inductor terminated line handover module.
The virtual load of electric current is connected between mutual inductor terminated line handover module and the table tail end wiring handover module, adjusts output current according to required resistance value.
The virtual load of voltage is connected between mutual inductor terminated line handover module and the table tail end wiring handover module, adjusts output voltage according to required admittance value.
Mutual inductor terminated line handover module is connected to three-phase programmable power supply, the virtual load of electric current, the virtual load of voltage, realizes the various wiring error simulations of mutual inductor end.
Table tail wiring handover module is connected to the virtual load of electric current, the virtual load of voltage, table meter, realizes the various wiring error simulations of table tail end.
Information transmission and control module are connected to three-phase programmable power supply, the virtual load of electric current, the virtual load of voltage, mutual inductor terminated line handover module, table tail wiring handover module, PC, realize the level and the format conversion of communication between PC and each module.
The table meter is connected to table tail wiring handover module, is used for simulated field metering table meter.
PC is connected to information transmission and control module, and be used for sending, receive instruction, data, and the state of processing, display device.
Above-mentioned electric current virtual negative pocket is drawn together current transformer, rising current transformer, modular converter, the orthogonal processing module, DA modular converter 1, DA modular converter 2, the CPU module, totalizer, power amplifier, wherein, the input end of current transformer connects current input terminal, output terminal connects modular converter, modular converter connects the orthogonal processing module, DA modular converter 2, the orthogonal processing module connects DA modular converter 1, the CPU module connects DA modular converter 1, DA modular converter 2, totalizer connects DA modular converter 1, DA modular converter 2, power amplifier, power amplifier connects rising current transformer, rising current transformer connects current output terminal, exports the electric current corresponding with various resistance values.
Above-mentioned voltage virtual negative pocket is drawn together voltage transformer (VT), resistance, modular converter, the orthogonal processing module, the CPU module, DA modular converter 1, DA modular converter 2, totalizer, power amplifier, transformer, wherein, the voltage transformer (VT) input end connects voltage input end, output terminal connects modular converter, handover module connects the orthogonal processing module, DA modular converter 2, the orthogonal processing module connects DA modular converter 1, the CPU module connects DA modular converter 1, DA modular converter 2, totalizer connects DA modular converter 1, DA modular converter 2 and power amplifier, power amplifier connects transformer, transformer connects resistance, and resistance connects voltage output end, exports the voltage corresponding with various admittance values.
Above-mentioned mutual inductor terminated line handover module comprises mutual inductor end current switching module, mutual inductor terminal voltage handover module.
Wherein, mutual inductor end current switching module contains A phase arranged side by side, B phase, C three groups of identical circuit mutually, and its A comprises mutually:
Relay J 1, have two groups often open, normally closed contact, two groups of normally opened contacts connect the input of A phase current IA1, IA2 respectively, two groups of normally closed contacts are unsettled, two groups of common connect the common of relay J 2 respectively, are used to switch this phase current and open circuit.
Relay J 2, have two groups often open, normally closed contact, first group of normally opened contact and second group of normally closed contact are parallel-connected to this phase current output IA10, first group of normally closed contact and second group of normally opened contact are parallel-connected to this phase current output IA20, it is anti-to be used to switch this phase current mutual inductor end polarity, and electric current output IA10, IA20 are connected to the virtual load of electric current.
Relay J 3, normally opened contact connects ground wire GND, and normally closed contact is unsettled, and common connects electric current output IA20, is used to switch this phase current ground connection.
Mutual inductor terminal voltage handover module contains A phase arranged side by side, B phase, C three groups of identical circuit mutually, and A comprises mutually:
Relay J 11, normally opened contact connect the input of this phase 57.7V voltage, and normally closed contact connects the input of this phase 200V voltage, and common connects the normally opened contact of relay J 12, are used to switch this phase voltage input gear.
Relay J 12, normally closed contact connect the input of this phase 100V voltage, and common connects 13 first groups of normally closed contacts of relay J, are used to switch this phase voltage input gear.
Relay J 13, have two groups often open, normally closed contact, second group of normally closed contact connects voltage ground wire UA_N, two groups of common connect two groups of common of relay J 14 respectively, are used to switch this phase voltage and open circuit.
Relay J 14, have two groups often open, normally closed contact, first group of normally closed contact and second group of normally opened contact are parallel-connected to this phase voltage output UA10, first group of normally opened contact and second group of normally closed contact are parallel-connected to this phase voltage output UA20, it is anti-to be used to switch this phase voltage polarity, and voltage output UA10, UA20 are connected to the virtual load of voltage.
Relay J 15, normally opened contact connects ground wire GND, and normally closed contact is unsettled, and common connects voltage output UA20, is used to switch this phase voltage ground connection.
Above-mentioned table tail wiring handover module comprises table tail current handover module, table tail voltage handover module.
Wherein, table tail current handover module comprises:
Relay J 21, normally opened contact connect A phase current A+, and normally closed contact connects C phase current C+, and common connects the normally opened contact of relay J 24.
Relay J 22, normally opened contact connect B phase current B+, and normally closed contact connects A phase current A+, and common connects the normally opened contact of relay J 25.
Relay J 23, normally opened contact connect C phase current C+, and normally closed contact connects B phase current B+, and common connects the normally opened contact of relay J 26.
Relay J 24, normally closed contact connect B phase current B+.
Relay J 25, normally closed contact connect C phase current C+.
Relay J 26, normally closed contact connect A phase current A+.
Relay J 21, J22, J23, J24, J25, J26 finish the three-phase current phase sequence jointly and switch.
Relay J 27, have two groups often open, normally closed contact, first group of normally closed contact and second group of normally opened contact are parallel-connected to the common of relay J 24, two groups of common are connected respectively to electric current output I1+, I1-.
Relay J 28, have two groups often open, normally closed contact, first group of normally closed contact and second group of normally opened contact are parallel-connected to the common of relay J 25, two groups of common are connected respectively to electric current output I2+, I2-.
Relay J 29, have two groups often open, normally closed contact, first group of normally closed contact and second group of normally opened contact are parallel-connected to the common of relay J 26, two groups of common are connected respectively to electric current output I3+, I3-.
First group of normally opened contact of relay J 27, J28, J29 and second group of normally closed contact are parallel-connected to A-, B-, the C-end of three-phase current together, and three relays are finished the table tail polarity anti-switching of three-phase current respectively.
Table tail voltage handover module comprises:
Relay J 31, normally opened contact connect A phase voltage UA+, and normally closed contact connects C phase voltage UC+, and common connects the normally opened contact of relay J 34.
Relay J 32, normally opened contact connect B phase voltage UB+, and normally closed contact connects A phase voltage UA+, and common connects the normally opened contact of relay J 35.
Relay J 33, normally opened contact connect C phase voltage UC+, and normally closed contact connects B phase voltage UB+, and common connects the normally opened contact of relay J 36.
Relay J 34, normally closed contact connect B phase voltage UB+, and common connects voltage output U10.
Relay J 35, normally closed contact connect C phase voltage UC+, and common connects voltage output U20.
Relay J 36, normally closed contact connect A phase voltage UA+, and common connects voltage output U30.
Relay J 31, J32, J33, J34, J35, J36 finish the three-phase voltage phase sequence jointly and switch.
The neutral line UN of three-phase voltage input directly is connected to output by this circuit.
Technique scheme, owing to adopted the virtual load of electric current, the virtual load of voltage, can simulate secondary circuit load, the secondary circuit voltage drop of electric energy measurement loop, realized more fully electric energy metrical training, and, improved the comprehensive of training set owing to adopted mutual inductor terminated line handover module, table tail wiring handover module to realize being provided with that the electric-power metering secondary circuit is contingent surpasses 100,000 kinds of wiring errors.
Description of drawings
The utility model has accompanying drawing:
Fig. 1 is an entire block diagram of the present utility model.
Fig. 2 is the virtual load theory diagram of electric current of the present utility model.
Fig. 3 is the virtual load theory diagram of voltage of the present utility model.
Fig. 4 is the current switching module principle figure of mutual inductor terminated line handover module of the present utility model.
Fig. 5 is the voltage handover module schematic diagram of mutual inductor terminated line handover module of the present utility model.
Fig. 6 is the current switching module principle figure of table tail wiring handover module of the present utility model.
Fig. 7 is the voltage handover module schematic diagram of table tail wiring handover module of the present utility model.
Embodiment
Embodiment 1:
With reference to accompanying drawing 1 to Fig. 7 is an embodiment of the present utility model, a kind of full metering analogue means, be used to simulate the various wiring errors of electric energy metering secondary and the test of secondary circuit load measurement, secondary circuit voltage drop experiment with measuring, this device comprises that three-phase programmable power supply, the virtual load of electric current, the virtual load of voltage, mutual inductor terminated line handover module, table tail wiring handover module, information transmission are counted with control module, table, PC.Wherein:
The three-phase programmable power supply generates controlled interchange three-phase voltage, exchanges three-phase current, and its output terminal is connected to mutual inductor terminated line handover module.
The virtual load of electric current is connected between mutual inductor terminated line handover module and the table tail end wiring handover module, adjusts output current according to required resistance value.
The virtual load of voltage is connected between mutual inductor terminated line handover module and the table tail end wiring handover module, adjusts output voltage according to required admittance value.
Mutual inductor terminated line handover module is connected to three-phase programmable power supply, the virtual load of electric current, the virtual load of voltage, realizes the various wiring error simulations of mutual inductor end.
Table tail wiring handover module is connected to the virtual load of electric current, the virtual load of voltage, table meter, realizes the various wiring error simulations of table tail end.
Information transmission and control module are connected to three-phase programmable power supply, the virtual load of electric current, the virtual load of voltage, mutual inductor terminated line handover module, table tail wiring handover module, PC, realize the level and the format conversion of communication between PC and each module.
The table meter is connected to table tail wiring handover module, is used for simulated field metering table meter.
PC is connected to information transmission and control module, and be used for sending, receive instruction, data, and the state of processing, display device.
Draw together current transformer by electric current virtual negative pocket shown in Figure 2, rising current transformer, modular converter, the orthogonal processing module, DA modular converter 1, DA modular converter 2, the CPU module, totalizer, power amplifier, wherein, the input end of current transformer connects current input terminal, output terminal connects modular converter, modular converter connects the orthogonal processing module, DA modular converter 2, the orthogonal processing module connects DA modular converter 1, the CPU module connects DA modular converter 1, DA modular converter 2, totalizer connects DA modular converter 1, DA modular converter 2, power amplifier, power amplifier connects rising current transformer, rising current transformer connects current output terminal, exports the electric current corresponding with various resistance values.
Wherein modular converter is the 1K Ohmage, and current signal is converted to voltage signal.It is the amplifier chip of OP07 that the orthogonal processing module adopts model, forms integrating circuit, with input signal phase shift 90 degree.DA modular converter 1, DA modular converter 2 circuit are identical, adopt the DA conversion chip to adopt the MAX7541 chip.Adder circuit adopts 0P37 amplifier chip, also comprises precision resistance R1, R2, R3, R4, and physical circuit as shown in Figure 8.Power amplifier module is 100 watts of power amplifiers.
Draw together voltage transformer (VT) by voltage virtual negative pocket shown in Figure 3, resistance, modular converter, the orthogonal processing module, the CPU module, DA modular converter 1, DA modular converter 2, totalizer, power amplifier, transformer, wherein, the voltage transformer (VT) input end connects voltage input end, output terminal connects modular converter, handover module connects the orthogonal processing module, DA modular converter 2, the orthogonal processing module connects DA modular converter 1, the CPU module connects DA modular converter 1, DA modular converter 2, totalizer connects DA modular converter 1, DA modular converter 2 and power amplifier, power amplifier connects transformer, transformer connects resistance, resistance connects voltage output end, exports the voltage corresponding with various admittance values.
Wherein modular converter is the follow circuit of being made up of amplifier LM311.It is the amplifier chip of OP07 that the orthogonal processing module adopts model, forms integrating circuit, with input signal phase shift 90 degree.DA modular converter 1, DA modular converter 2 circuit are identical, all adopt the DA conversion chip to adopt the MAX7541 chip.Adder circuit adopts 0P37 amplifier chip, also comprises precision resistance R1, R2, R3, R4, and physical circuit as shown in Figure 8.Power amplifier module is 100 watts of power amplifiers.
By mutual inductor end current switching module shown in Figure 4, contain A phase arranged side by side, B phase, C three groups of identical circuit mutually, its A comprises mutually:
Relay J 1, have two groups often open, normally closed contact, two groups of normally opened contacts connect the input of A phase current IA1, IA2 respectively, two groups of normally closed contacts are unsettled, two groups of common connect the common of relay J 2 respectively, are used to switch this phase current and open circuit.
Relay J 2, have two groups often open, normally closed contact, first group of normally opened contact and second group of normally closed contact are parallel-connected to this phase current output IA10, first group of normally closed contact and second group of normally opened contact are parallel-connected to this phase current output IA20, it is anti-to be used to switch this phase current mutual inductor end polarity, and electric current output IA10, IA20 are connected to the virtual load of electric current.
Relay J 3, normally opened contact connects ground wire GND, and normally closed contact is unsettled, and common connects electric current output IA20, is used to switch this phase current ground connection.
By mutual inductor terminal voltage handover module shown in Figure 5, contain A phase arranged side by side, B phase, C three groups of identical circuit mutually, A comprises mutually:
Relay J 11, normally opened contact connect the input of this phase 57.7V voltage, and normally closed contact connects the input of this phase 200V voltage, and common connects the normally opened contact of relay J 12, are used to switch this phase voltage input gear.
Relay J 12, normally closed contact connect the input of this phase 100V voltage, and common connects 13 first groups of normally closed contacts of relay J, are used to switch this phase voltage input gear.
Relay J 13, have two groups often open, normally closed contact, second group of normally closed contact connects voltage ground wire UA_N, two groups of common connect two groups of common of relay J 14 respectively, are used to switch this phase voltage and open circuit.
Relay J 14, have two groups often open, normally closed contact, first group of normally closed contact and second group of normally opened contact are parallel-connected to this phase voltage output UA10, first group of normally opened contact and second group of normally closed contact are parallel-connected to this phase voltage output UA20, it is anti-to be used to switch this phase voltage polarity, and voltage output UA10, UA20 are connected to the virtual load of voltage.
Relay J 15, normally opened contact connects ground wire GND, and normally closed contact is unsettled, and common connects voltage output UA20, is used to switch this phase voltage ground connection.
Table tail current handover module by shown in Figure 6 comprises:
Relay J 21, normally opened contact connect A phase current A+, and normally closed contact connects C phase current C+, and common connects the normally opened contact of relay J 24.
Relay J 22, normally opened contact connect B phase current B+, and normally closed contact connects A phase current A+, and common connects the normally opened contact of relay J 25.
Relay J 23, normally opened contact connect C phase current C+, and normally closed contact connects B phase current B+, and common connects the normally opened contact of relay J 26.
Relay J 24, normally closed contact connect B phase current B+.
Relay J 25, normally closed contact connect C phase current C+.
Relay J 26, normally closed contact connect A phase current A+.
Relay J 21, J22, J23, J24, J25, J26 finish the three-phase current phase sequence jointly and switch.
Relay J 27, have two groups often open, normally closed contact, first group of normally closed contact and second group of normally opened contact are parallel-connected to the common of relay J 24, two groups of common are connected respectively to electric current output I1+, I1-.
Relay J 28, have two groups often open, normally closed contact, first group of normally closed contact and second group of normally opened contact are parallel-connected to the common of relay J 25, two groups of common are connected respectively to electric current output I2+, I2-.
Relay J 29, have two groups often open, normally closed contact, first group of normally closed contact and second group of normally opened contact are parallel-connected to the common of relay J 26, two groups of common are connected respectively to electric current output I3+, I3-.
First group of normally opened contact of relay J 27, J28, J29 and second group of normally closed contact are parallel-connected to A-, B-, the C-end of three-phase current together, and three relays are finished the table tail polarity anti-switching of three-phase current respectively.
Table tail voltage handover module by shown in Figure 7 comprises:
Relay J 31, normally opened contact connect A phase voltage UA+, and normally closed contact connects C phase voltage UC+, and common connects the normally opened contact of relay J 34.
Relay J 32, normally opened contact connect B phase voltage UB+, and normally closed contact connects A phase voltage UA+, and common connects the normally opened contact of relay J 35.
Relay J 33, normally opened contact connect C phase voltage UC+, and normally closed contact connects B phase voltage UB+, and common connects the normally opened contact of relay J 36.
Relay J 34, normally closed contact connect B phase voltage UB+, and common connects voltage output U10.
Relay J 35, normally closed contact connect C phase voltage UC+, and common connects voltage output U20.
Relay J 36, normally closed contact connect A phase voltage UA+, and common connects voltage output U30.
Relay J 31, J32, J33, J34, J35, J36 finish the three-phase voltage phase sequence jointly and switch.
The neutral line UN of three-phase voltage input directly is connected to output by this circuit.
Claims (5)
1. a full metering analogue means is characterized in that this device comprises three-phase programmable power supply, the virtual load of electric current, the virtual load of voltage, mutual inductor terminated line handover module, table tail wiring handover module, information transmission and control module, table meter, PC, wherein:
The three-phase programmable power supply generates controlled interchange three-phase voltage, exchanges three-phase current, and its output terminal is connected to mutual inductor terminated line handover module;
The virtual load of electric current is connected between mutual inductor terminated line handover module and the table tail end wiring handover module, adjusts output current according to required resistance value;
The virtual load of voltage is connected between mutual inductor terminated line handover module and the table tail end wiring handover module, adjusts output voltage according to required admittance value;
Mutual inductor terminated line handover module is connected to three-phase programmable power supply, the virtual load of electric current, the virtual load of voltage, realizes the various wiring error simulations of mutual inductor end;
Table tail wiring handover module is connected to the virtual load of electric current, the virtual load of voltage, table meter, realizes the various wiring error simulations of table tail end;
Information transmission and control module are connected to three-phase programmable power supply, the virtual load of electric current, the virtual load of voltage, mutual inductor terminated line handover module, table tail wiring handover module, PC, realize the level and the format conversion of communication between PC and each module;
The table meter is connected to table tail wiring handover module, is used for simulated field metering table meter;
PC is connected to information transmission and control module, and be used for sending, receive instruction, data, and the state of processing, display device.
2. full metering analogue means according to claim 1, it is characterized in that described electric current virtual negative pocket draws together current transformer, rising current transformer, modular converter, the orthogonal processing module, DA modular converter 1, DA modular converter 2, the CPU module, totalizer, power amplifier, wherein, the input end of current transformer connects current input terminal, output terminal connects modular converter, modular converter connects the orthogonal processing module, DA modular converter 2, the orthogonal processing module connects DA modular converter 1, the CPU module connects DA modular converter 1, DA modular converter 2, totalizer connects DA modular converter 1, DA modular converter 2, power amplifier, power amplifier connects rising current transformer, rising current transformer connects current output terminal, exports the electric current corresponding with various resistance values.
3. full metering analogue means according to claim 1, it is characterized in that described voltage virtual negative pocket draws together voltage transformer (VT), resistance, modular converter, the orthogonal processing module, the CPU module, DA modular converter 1, DA modular converter 2, totalizer, power amplifier, transformer, wherein, the voltage transformer (VT) input end connects voltage input end, output terminal connects modular converter, handover module connects the orthogonal processing module, DA modular converter 2, the orthogonal processing module connects DA modular converter 1, the CPU module connects DA modular converter 1, DA modular converter 2, totalizer connects DA modular converter 1, DA modular converter 2 and power amplifier, power amplifier connects transformer, transformer connects resistance, resistance connects voltage output end, exports the voltage corresponding with various admittance values.
4. full metering analogue means according to claim 1 is characterized in that described mutual inductor terminated line handover module comprises mutual inductor end current switching module, mutual inductor terminal voltage handover module;
Described mutual inductor end current switching module contains A phase arranged side by side, B phase, C three groups of identical circuit mutually, and its A comprises mutually:
Relay J 1, have two groups often open, normally closed contact, two groups of normally opened contacts connect the input of A phase current IA1, IA2 respectively, two groups of normally closed contacts are unsettled, two groups of common connect the common of relay J 2 respectively, are used to switch this phase current and open circuit;
Relay J 2, have two groups often open, normally closed contact, first group of normally opened contact and second group of normally closed contact are parallel-connected to this phase current output IA10, first group of normally closed contact and second group of normally opened contact are parallel-connected to this phase current output IA20, it is anti-to be used to switch this phase current mutual inductor end polarity, and electric current output IA10, IA20 are connected to the virtual load of electric current;
Relay J 3, normally opened contact connects ground wire GND, and normally closed contact is unsettled, and common connects electric current output IA20, is used to switch this phase current ground connection;
Described mutual inductor terminal voltage handover module contains A phase arranged side by side, B phase, C three groups of identical circuit mutually, and A comprises mutually:
Relay J 11, normally opened contact connect the input of this phase 57.7V voltage, and normally closed contact connects the input of this phase 200V voltage, and common connects the normally opened contact of relay J 12, are used to switch this phase voltage input gear;
Relay J 12, normally closed contact connect the input of this phase 100V voltage, and common connects 13 first groups of normally closed contacts of relay J, are used to switch this phase voltage input gear;
Relay J 13, have two groups often open, normally closed contact, second group of normally closed contact connects voltage ground wire UA_N, two groups of common connect two groups of common of relay J 14 respectively, are used to switch this phase voltage and open circuit;
Relay J 14, have two groups often open, normally closed contact, first group of normally closed contact and second group of normally opened contact are parallel-connected to this phase voltage output UA10, first group of normally opened contact and second group of normally closed contact are parallel-connected to this phase voltage output UA20, it is anti-to be used to switch this phase voltage polarity, and voltage output UA10, UA20 are connected to the virtual load of voltage;
Relay J 15, normally opened contact connects ground wire GND, and normally closed contact is unsettled, and common connects voltage output UA20, is used to switch this phase voltage ground connection;
5. full metering analogue means according to claim 1 is characterized in that described table tail wiring handover module comprises table tail current handover module, table tail voltage handover module;
Described table tail current handover module comprises:
Relay J 21, normally opened contact connect A phase current A+, and normally closed contact connects C phase current C+, and common connects the normally opened contact of relay J 24;
Relay J 22, normally opened contact connect B phase current B+, and normally closed contact connects A phase current A+, and common connects the normally opened contact of relay J 25;
Relay J 23, normally opened contact connect C phase current C+, and normally closed contact connects B phase current B+, and common connects the normally opened contact of relay J 26;
Relay J 24, normally closed contact connect B phase current B+;
Relay J 25, normally closed contact connect C phase current C+;
Relay J 26, normally closed contact connect A phase current A+;
Relay J 21, J22, J23, J24, J25, J26 finish the three-phase current phase sequence jointly and switch;
Relay J 27, have two groups often open, normally closed contact, first group of normally closed contact and second group of normally opened contact are parallel-connected to the common of relay J 24, two groups of common are connected respectively to electric current output I1+, I1-;
Relay J 28, have two groups often open, normally closed contact, first group of normally closed contact and second group of normally opened contact are parallel-connected to the common of relay J 25, two groups of common are connected respectively to electric current output I2+, I2-;
Relay J 29, have two groups often open, normally closed contact, first group of normally closed contact and second group of normally opened contact are parallel-connected to the common of relay J 26, two groups of common are connected respectively to electric current output I3+, I3-;
First group of normally opened contact of relay J 27, J28, J29 and second group of normally closed contact are parallel-connected to A-, B-, the C-end of three-phase current together, and three relays are finished the table tail polarity anti-switching of three-phase current respectively;
Described table tail voltage handover module comprises:
Relay J 31, normally opened contact connect A phase voltage UA+, and normally closed contact connects C phase voltage UC+, and common connects the normally opened contact of relay J 34;
Relay J 32, normally opened contact connect B phase voltage UB+, and normally closed contact connects A phase voltage UA+, and common connects the normally opened contact of relay J 35;
Relay J 33, normally opened contact connect C phase voltage UC+, and normally closed contact connects B phase voltage UB+, and common connects the normally opened contact of relay J 36;
Relay J 34, normally closed contact connect B phase voltage UB+, and common connects voltage output U10;
Relay J 35, normally closed contact connect C phase voltage UC+, and common connects voltage output U20;
Relay J 36, normally closed contact connect A phase voltage UA+, and common connects voltage output U30;
Relay J 31, J32, J33, J34, J35, J36 finish the three-phase voltage phase sequence jointly and switch;
The neutral line UN of three-phase voltage input directly is connected to output by this circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201593209U CN201638439U (en) | 2010-04-15 | 2010-04-15 | Full-metering simulation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201593209U CN201638439U (en) | 2010-04-15 | 2010-04-15 | Full-metering simulation device |
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| CN201638439U true CN201638439U (en) | 2010-11-17 |
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| CN2010201593209U Expired - Fee Related CN201638439U (en) | 2010-04-15 | 2010-04-15 | Full-metering simulation device |
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| CN103778829A (en) * | 2014-01-09 | 2014-05-07 | 广西电网公司电力科学研究院 | Electric energy metering transformer secondary voltage drop and load test training system |
| CN103777165A (en) * | 2014-01-09 | 2014-05-07 | 广西电网公司电力科学研究院 | Voltage load box simulator |
| CN103778831A (en) * | 2014-01-09 | 2014-05-07 | 广西电网公司电力科学研究院 | Standard current transformer simulator |
| CN103778828A (en) * | 2014-01-09 | 2014-05-07 | 广西电网公司电力科学研究院 | Transformer calibrator simulator |
| CN103777166A (en) * | 2014-01-09 | 2014-05-07 | 广西电网公司电力科学研究院 | Standard voltage transformer simulator |
| CN103778830A (en) * | 2014-01-09 | 2014-05-07 | 广西电网公司电力科学研究院 | Current load box simulator |
| CN103969540A (en) * | 2013-01-30 | 2014-08-06 | 江苏省电力公司常州供电公司 | Method for testing wiring of secondary circuits of four-star voltage transformers |
| CN105022016A (en) * | 2015-06-23 | 2015-11-04 | 国网辽宁省电力有限公司检修分公司 | Quick zero-flux current transformer test wiring device and use method |
| CN106501761A (en) * | 2016-12-26 | 2017-03-15 | 烟台东方威思顿电气股份有限公司 | Three-phase intelligent electric-energy meter simulation detection system |
-
2010
- 2010-04-15 CN CN2010201593209U patent/CN201638439U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103969540A (en) * | 2013-01-30 | 2014-08-06 | 江苏省电力公司常州供电公司 | Method for testing wiring of secondary circuits of four-star voltage transformers |
| CN103969540B (en) * | 2013-01-30 | 2016-06-22 | 江苏省电力公司常州供电公司 | The method of testing of four wye voltage transformer secondary circuit wiring |
| CN103778829A (en) * | 2014-01-09 | 2014-05-07 | 广西电网公司电力科学研究院 | Electric energy metering transformer secondary voltage drop and load test training system |
| CN103777165A (en) * | 2014-01-09 | 2014-05-07 | 广西电网公司电力科学研究院 | Voltage load box simulator |
| CN103778831A (en) * | 2014-01-09 | 2014-05-07 | 广西电网公司电力科学研究院 | Standard current transformer simulator |
| CN103778828A (en) * | 2014-01-09 | 2014-05-07 | 广西电网公司电力科学研究院 | Transformer calibrator simulator |
| CN103777166A (en) * | 2014-01-09 | 2014-05-07 | 广西电网公司电力科学研究院 | Standard voltage transformer simulator |
| CN103778830A (en) * | 2014-01-09 | 2014-05-07 | 广西电网公司电力科学研究院 | Current load box simulator |
| CN105022016A (en) * | 2015-06-23 | 2015-11-04 | 国网辽宁省电力有限公司检修分公司 | Quick zero-flux current transformer test wiring device and use method |
| CN106501761A (en) * | 2016-12-26 | 2017-03-15 | 烟台东方威思顿电气股份有限公司 | Three-phase intelligent electric-energy meter simulation detection system |
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