CN209709758U - A kind of distribution transformer Integral digital intelligent terminal - Google Patents
A kind of distribution transformer Integral digital intelligent terminal Download PDFInfo
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- CN209709758U CN209709758U CN201920740678.1U CN201920740678U CN209709758U CN 209709758 U CN209709758 U CN 209709758U CN 201920740678 U CN201920740678 U CN 201920740678U CN 209709758 U CN209709758 U CN 209709758U
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Abstract
The utility model discloses a kind of distribution transformer Integral digital intelligent terminals, belong to electronic technology field, including power panel, master control borad and open into plate, the distribution transformer intelligent assembly of the utility model can be realized the low-pressure side electrical quantity and load measurement of distribution transformer, and the distribution transformer intelligent assembly of the utility model can be realized pressure inside distribution transformer and state of temperature amount is monitored.In conjunction with transformer load, transformer station high-voltage side bus health status is differentiated, realize the operating status assessment of transformer, to abnormal transformer emphasis check and evaluation, prevent the generation of transformer damage and power outage, the utility model is small in size, it is easy for installation, it is installed on the top of distribution transformer, is communicated using long distance wireless mode, without external additional wiring.
Description
Technical field
The utility model belongs to electronic technology field, in particular to a kind of distribution transformer Integral digital intelligence is eventually
End.
Background technique
In power distribution network, distribution transformer is one of important equipment, is sent out in the operational process of entire power distribution network
Wave very important effect.For at present, it is affected by various factors, distribution transformer is being run and is being managed
During there is also many distinct issues, since the position of distribution transformer is in more dispersed state, just
The status information for causing its current can not be got in time, and distribution transformer is chronically at again in the operation of overload, be added
The load type of distribution transformer is very numerous many and diverse, these all make the quality of distribution network electric energy receive strong influence.
When being powered for electricity consumption user, distribution transformer is exactly final link, for entire supply network
Reliability and security has highly important influence, the also raising to entire power supply reliability of the operating status of distribution transformer
There is conclusive effect, therefore just has to the operational management for accelerating to improve distribution transformer.
Problems and disadvantages of the existing technology
1. existing distribution transformer has only carried out data acquisition measurement to electrical quantity.
In this operating mode, when finding abnormal electrical quantity, protection act, distribution transformer has occurred that event
Barrier, causes unplanned loss of outage.
Traditional distribution transformer measurement scheme cannot carry out accurate measurements assessment, nothing to the working condition of distribution transformer
Method finds the distribution transformer of faulty risk in advance, prevents the generation of transformer fault and power outage.
2. the intelligent terminal signal that existing distribution transformer uses is from the number of winning the confidence outside transformer, there are stealing, individually
With stand-by power source, it is separately installed the problems such as.
Utility model content
The purpose of the utility model is to provide a kind of distribution transformer Integral digital intelligent terminals, solve to distribution
The technical issues of low-pressure side electrical quantities measurement of transformer.
To achieve the above object, the utility model uses following technical scheme:
A kind of distribution transformer Integral digital intelligent terminal, including power panel, master control borad and open into plate, power panel packet
Include power conversion module, three-phase electricity AM access module and frequency tracking module；
Power conversion module includes AC-DC module and boost module U1, the input terminal connection 220V power supply of AC-DC module,
Output end exports 5V power supply, and input terminal connection 5V power supply, the output end of boost module U7 exports 12V power supply；
Three-phase electricity AM access module includes A phase current voltage sampling circuit, B phase current voltage sampling circuit and B phase current electricity
Sample circuit is pressed, A phase current voltage sampling circuit includes voltage changer PT1 for being sampled to A phase voltage and is used for
Power pack CT1, B the phase current voltage sampling circuit sampled to A phase current includes for sampling to B phase voltage
Voltage changer PT2 and power pack CT2, C phase current voltage sampling circuit for being sampled to B phase current include
Voltage changer PT3 for being sampled to the C phase voltage and power pack CT3 for being sampled to C phase current；
Frequency tracking module includes resistance R9, resistance R12, resistance R13, resistance R10, amplifier UB, diode DA1, two poles
Pipe DA2, capacitor C17, comparator UA1A, resistance R8, resistance R11 and one shot inverter U4, the one end resistance R9 connect voltage and become
Output end, the other end of parallel operation PT1 connect the negative input end of amplifier UB, and the positive input terminal of amplifier UB passes through resistance R12 connection and transports
The output end of UB is put, the positive input terminal of amplifier UB also passes through resistance R13 connection ground wire, and the output end of amplifier UB passes through resistance R10
Connect the positive input terminal of comparator UA1A, the anode of the positive input terminal connection diode DA1 of comparator UA1A, diode DA1
Cathode by the output end of resistance R8 connection comparator UA1A, the positive input terminal of comparator UA1A is also connected with diode DA2's
Cathode, the anode of diode DA2 connect ground wire, and diode DA2 is in parallel more than capacitor C17, the negative input end connection of comparator UA1A
Ground wire, the output end of comparator UA1A pass through the I1 pin of resistance R11 connection one shot inverter U4, one shot inverter U4's
O pin is the output end of frequency tracking module；
Master control borad includes RS485 module, A/D module, MCU module, outputs interface and external memory modules, RS485 mould
Block, A/D module output interface and external memory modules are connect with MCU module；
It opens and includes pressure acquisition module, temperature collecting module, GPRS communication module into plate and open into module；
The connection of one input terminal of pressure acquisition module and A/D module, GPRS communication module connect MCU module；
Temperature collecting module includes programmable current source U6, temperature sensor PT1 and resistance R54, programmable current source U6
Input terminal connection 5V power supply, output end by one end of resistance R9 connection temperature sensor PT1, temperature sensor PT1's is another
By resistance R54 connection ground wire, resistance R9 connect an input of A/D module with the connecting node of temperature sensor PT1 for one end
End；
Opening into module includes boost module U5, capacitor C24, resistance R3, resistance R5, capacitor C1, capacitor C3, resistance R4, electricity
1 foot of R6, optocoupler U1, optocoupler U3, resistance R2 and resistance R7, optocoupler U1 are hindered by opening outside resistance R3 connection first into signal
For 1 foot of KIN1, optocoupler U3 by opening outside resistance R5 connection second into signal KIN2,2 feet of optocoupler U1 and 2 feet of optocoupler U3 are equal
Ground wire is connected, the ground wire also passes through capacitor C24 connection the earth；Capacitor C1 and capacitor R4 is connected in 1 foot and 2 of optocoupler U1 in parallel
Between foot, capacitor C3 and capacitor R6 are connected in parallel between 1 foot of optocoupler U3 and 2 feet, the 4 feet connection MCU module of optocoupler U1
One I/O port, an I/O port of the 4 feet connection MCU module of optocoupler U3, resistance R2 is the pull-up resistor of 4 feet of optocoupler U1, resistance
R7 is the pull-up resistor of 4 feet of optocoupler U3；
The input terminal of boost module U5 connects the 5V power supply, output end and provides 24V power supply for external equipment.
Preferably, the model MAX485ESA of the RS485 module, the model AD7606 of A/D module, MCU module
Model SIM32F407ZGT6, external memory modules include EEROM chip and RAM chip, the model of EEROM chip
CTA25256, the model IS61LV51216 of RAM chip.
Preferably, the A phase current voltage sampling circuit includes the voltage changer PT1, the power pack
CT1, capacitor C6, capacitor C8, resistance R3, resistance R2, capacitor C5 and capacitor C7, the voltage changer PT1 are for A phase voltage
It is sampled, capacitor C6, capacitor C8 and resistance R3 constitute the RC filter circuit of the voltage changer PT1 output end, described
For power pack CT1 for sampling to A phase current, resistance R2, capacitor C5 and capacitor C7 constitute the power pack
The RC filter circuit of the output end of CT1；
The B phase current voltage sampling circuit includes the voltage changer PT2, the power pack CT2, capacitor
C10, capacitor C12, resistance R5, resistance R4, capacitor C9 and capacitor C11, the voltage changer PT2 are for carrying out B phase voltage
Sampling, capacitor C10, capacitor C12 and resistance R5 constitute the RC filter circuit of the voltage changer PT2 output end, the electricity
For current converter CT2 for sampling to B phase current, resistance R4, capacitor C9 and capacitor C11 constitute the power pack
The RC filter circuit of the output end of CT2；
The C phase current voltage sampling circuit includes the voltage changer PT3, the power pack CT3, capacitor
C14, capacitor C16, resistance R7, resistance R6, capacitor C13 and capacitor C15, the voltage changer PT3 be used for C phase voltage into
Row sampling, capacitor C14, capacitor C16 and resistance R7 constitute the RC filter circuit of the voltage changer PT3 output end, described
For power pack CT3 for sampling to C phase current, resistance R6, capacitor C13 and capacitor C15 constitute the current transformation
The RC filter circuit of the output end of device CT3.
Preferably, the model of the voltage changer PT1, the voltage changer PT2 and the voltage changer PT3
It is TR1176-3C；The model of the power pack CT1, the power pack CT2 and the power pack CT3 are equal
For TR0176-4C.
Preferably, the model OP4177AR of the amplifier UB；The model LM393DR of the comparator UA1A；It is described
The model SN74LVC1G14DBV of one shot inverter U4, the model LD10-20B05 of the AC-DC module；The boosting
The model A0512S_1WR2 of module U7；The model LT3092 of the programmable current source U6, temperature sensor PT100；Institute
State the model F0524S-2WR2 of boost module U5.
Preferably, the model Air202 of the GPRS communication module；The model MD- of the pressure acquisition module
PSG010 pressure sensor.
The distribution of a kind of distribution transformer Integral digital intelligent terminal described in the utility model, the utility model becomes
Depressor intelligent assembly can be realized the low-pressure side electrical quantity and load measurement of distribution transformer.The distribution transformer of the utility model
Intelligent assembly can be realized pressure inside distribution transformer and state of temperature amount is monitored.The utility model is small in size, peace
Dress is convenient, is installed on the top of distribution transformer, is communicated using long distance wireless mode, without external additional wiring.
Detailed description of the invention
Fig. 1 is the principles of the present invention figure block diagram；
Fig. 2 is the wiring diagram of the utility model；
Fig. 3 is the circuit diagram of the power conversion module of the utility model；
Fig. 4 is the circuit diagram of the frequency tracking module of the utility model；
Fig. 5 is the circuit diagram of the three-phase electricity AM access module of the utility model；
Fig. 6 is the circuit diagram opened into module of the utility model；
Fig. 7 is the circuit diagram of the temperature collecting module of the utility model.
Specific embodiment
A kind of distribution transformer Integral digital intelligent terminal, including power panel, master control borad and open into plate, power panel packet
Include power conversion module, three-phase electricity AM access module and frequency tracking module；
Power conversion module includes AC-DC module and boost module U1, the input terminal connection 220V power supply of AC-DC module,
Output end exports 5V power supply, and input terminal connection 5V power supply, the output end of boost module U7 exports 12V power supply；
Three-phase electricity AM access module includes A phase current voltage sampling circuit, B phase current voltage sampling circuit and B phase current electricity
Sample circuit is pressed, A phase current voltage sampling circuit includes voltage changer PT1 for being sampled to A phase voltage and is used for
Power pack CT1, B the phase current voltage sampling circuit sampled to A phase current includes for sampling to B phase voltage
Voltage changer PT2 and power pack CT2, C phase current voltage sampling circuit for being sampled to B phase current include
Voltage changer PT3 for being sampled to the C phase voltage and power pack CT3 for being sampled to C phase current；
Frequency tracking module includes resistance R9, resistance R12, resistance R13, resistance R10, amplifier UB, diode DA1, two poles
Pipe DA2, capacitor C17, comparator UA1A, resistance R8, resistance R11 and one shot inverter U4, the one end resistance R9 connect voltage and become
Output end, the other end of parallel operation PT1 connect the negative input end of amplifier UB, and the positive input terminal of amplifier UB passes through resistance R12 connection and transports
The output end of UB is put, the positive input terminal of amplifier UB also passes through resistance R13 connection ground wire, and the output end of amplifier UB passes through resistance R10
Connect the positive input terminal of comparator UA1A, the anode of the positive input terminal connection diode DA1 of comparator UA1A, diode DA1
Cathode by the output end of resistance R8 connection comparator UA1A, the positive input terminal of comparator UA1A is also connected with diode DA2's
Cathode, the anode of diode DA2 connect ground wire, and diode DA2 is in parallel more than capacitor C17, the negative input end connection of comparator UA1A
Ground wire, the output end of comparator UA1A pass through the I1 pin of resistance R11 connection one shot inverter U4, one shot inverter U4's
O pin is the output end of frequency tracking module；
The present embodiment frequency tracking module tracks the frequency of A phase voltage, and A phase voltage passes through A phase current voltage sampling circuit
In voltage changer PT1 transformation after output voltage U1+, voltage U1+ is input in amplifier UB by resistance R9 and amplified, so
Afterwards after comparator LM393 and one shot inverter U4, export digital pulse signal, by digital pulse signal realize with
The frequency of track A phase voltage.
Master control borad includes RS485 module, A/D module, MCU module, outputs interface and external memory modules, RS485 mould
Block, A/D module output interface and external memory modules are connect with MCU module；
It opens and includes pressure acquisition module, temperature collecting module, GPRS communication module into plate and open into module；
The connection of one input terminal of pressure acquisition module and A/D module, GPRS communication module connect MCU module；
Temperature collecting module includes programmable current source U6, temperature sensor PT1 and resistance R54, programmable current source U6
Input terminal connection 5V power supply, output end by one end of resistance R9 connection temperature sensor PT1, temperature sensor PT1's is another
By resistance R54 connection ground wire, resistance R9 connect an input of A/D module with the connecting node of temperature sensor PT1 for one end
End；
The utility model uses programmable current source U6 for temperature sensor power supply, greatly improves temperature sensor
Stability, it is ensured that the acquisition of temperature signal is accurate.
Opening into module includes boost module U5, capacitor C24, resistance R3, resistance R5, capacitor C1, capacitor C3, resistance R4, electricity
1 foot of R6, optocoupler U1, optocoupler U3, resistance R2 and resistance R7, optocoupler U1 are hindered by opening outside resistance R3 connection first into signal
For 1 foot of KIN1, optocoupler U3 by opening outside resistance R5 connection second into signal KIN2,2 feet of optocoupler U1 and 2 feet of optocoupler U3 are equal
Ground wire is connected, the ground wire also passes through capacitor C24 connection the earth；Capacitor C1 and capacitor R4 is connected in 1 foot and 2 of optocoupler U1 in parallel
Between foot, capacitor C3 and capacitor R6 are connected in parallel between 1 foot of optocoupler U3 and 2 feet, the 4 feet connection MCU module of optocoupler U1
One I/O port, an I/O port of the 4 feet connection MCU module of optocoupler U3, resistance R2 is the pull-up resistor of 4 feet of optocoupler U1, resistance
R7 is the pull-up resistor of 4 feet of optocoupler U3；
In the present embodiment, by optocoupler U1 and optocoupler U3 it is split enter signal be isolated, greatly protect later period circuit
It is not opened into interference, the utility model also increases the capacitor C24 of access the earth in the input terminal of optocoupler U1 and optocoupler U3, prevents
Poor contact or electrostatic bring high voltage interference phenomenon.
The input terminal of boost module U5 connects the 5V power supply, output end and provides 24V power supply for external equipment.
Preferably, the model MAX485ESA of the RS485 module, the model AD7606 of A/D module, MCU module
Model SIM32F407ZGT6, external memory modules include EEROM chip and RAM chip, the model of EEROM chip
CTA25256, the model IS61LV51216 of RAM chip.
Preferably, the A phase current voltage sampling circuit includes the voltage changer PT1, the power pack
CT1, capacitor C6, capacitor C8, resistance R3, resistance R2, capacitor C5 and capacitor C7, the voltage changer PT1 are for A phase voltage
It is sampled, capacitor C6, capacitor C8 and resistance R3 constitute the RC filter circuit of the voltage changer PT1 output end, described
For power pack CT1 for sampling to A phase current, resistance R2, capacitor C5 and capacitor C7 constitute the power pack
The RC filter circuit of the output end of CT1；
The B phase current voltage sampling circuit includes the voltage changer PT2, the power pack CT2, capacitor
C10, capacitor C12, resistance R5, resistance R4, capacitor C9 and capacitor C11, the voltage changer PT2 are for carrying out B phase voltage
Sampling, capacitor C10, capacitor C12 and resistance R5 constitute the RC filter circuit of the voltage changer PT2 output end, the electricity
For current converter CT2 for sampling to B phase current, resistance R4, capacitor C9 and capacitor C11 constitute the power pack
The RC filter circuit of the output end of CT2；
The C phase current voltage sampling circuit includes the voltage changer PT3, the power pack CT3, capacitor
C14, capacitor C16, resistance R7, resistance R6, capacitor C13 and capacitor C15, the voltage changer PT3 be used for C phase voltage into
Row sampling, capacitor C14, capacitor C16 and resistance R7 constitute the RC filter circuit of the voltage changer PT3 output end, described
For power pack CT3 for sampling to C phase current, resistance R6, capacitor C13 and capacitor C15 constitute the current transformation
The RC filter circuit of the output end of device CT3.
Preferably, the model of the voltage changer PT1, the voltage changer PT2 and the voltage changer PT3
It is TR1176-3C；The model of the power pack CT1, the power pack CT2 and the power pack CT3 are equal
For TR0176-4C.
Preferably, the model OP4177AR of the amplifier UB；The model LM393DR of the comparator UA1A；It is described
The model SN74LVC1G14DBV of one shot inverter U4, the model LD10-20B05 of the AC-DC module；The boosting
The model A0512S_1WR2 of module U7；The model LT3092 of the programmable current source U6, temperature sensor PT100；Institute
State the model F0524S-2WR2 of boost module U5.
Preferably, the model Air202 of the GPRS communication module；The model MD- of the pressure acquisition module
PSG010 pressure sensor.
The utility model is based on advanced sensing technology, to the low-pressure side electrical quantity of transformer, internal pressure value, internal temperature
The quantity of states such as angle value are sampled.
The utility model is calculated using the technical grade arm processor of high-speed low-power-consumption sampled value and control assembly
Overall workflow and correspondence with foreign country.
The utility model is using the advanced Internet of Things communication technology to the prison of the utility model distribution transformer intelligent assembly
Measurement is sent to remote monitoring platform by remote radio communication mode.
Remote monitoring platform is current to the acquisition of distribution transformer and historical data is shown and to distribution transformer
Health status is analyzed and determined.
As shown in Fig. 2, the framework of the utility model is as follows:
A kind of distribution transformer Integral digital intelligent terminal is fixed on voltage and current on distribution transformer and acquires
Part is attached with low-pressure side bus and low-pressure side bus current transformer.The temperature and pressure sensing being mounted on terminal plate
The internal pressure of distribution transformer and state of temperature information are acquired by device.Mode will acquire information transmitting by wireless communication
Give power monitoring cloud platform.
The utility model provides a kind of distribution transformer intelligent Plan of low cost；It can be to the low of distribution transformer
Pressure side electrical quantity is acquired, can internal pressure to distribution transformer and state of temperature amount be acquired, the utility model
Teletransmission is carried out by acquisition data of the long distance wireless mode to distribution transformer.
The distribution of a kind of distribution transformer Integral digital intelligent terminal described in the utility model, the utility model becomes
Depressor intelligent assembly can be realized the low-pressure side electrical quantity and load measurement of distribution transformer.The distribution transformer of the utility model
Intelligent assembly can be realized pressure inside distribution transformer and state of temperature amount is monitored.In conjunction with transformer load, to change
Depressor operation health status is differentiated, realizes the operating status assessment of transformer, to abnormal transformer emphasis check and evaluation, in advance
The generation of anti-transformer damage and power outage, the utility model is small in size, easy for installation, is installed on the top of distribution transformer
Portion is communicated using long distance wireless mode, without external additional wiring.
Claims (6)
1. a kind of distribution transformer Integral digital intelligent terminal, it is characterised in that: including power panel, master control borad and open into
Plate, power panel include power conversion module, three-phase electricity AM access module and frequency tracking module；
Power conversion module includes AC-DC module and boost module U1, the input terminal connection 220V power supply of AC-DC module, output
End output 5V power supply, input terminal connection 5V power supply, the output end of boost module U7 export 12V power supply；
Three-phase electricity AM access module includes that A phase current voltage sampling circuit, B phase current voltage sampling circuit and C phase current voltage are adopted
Sample circuit, A phase current voltage sampling circuit include voltage changer PT1 for being sampled to A phase voltage and for A phase
Power pack CT1, B the phase current voltage sampling circuit that electric current is sampled includes the electricity for being sampled to B phase voltage
Buckling parallel operation PT2 and power pack CT2, C phase current voltage sampling circuit for being sampled to B phase current include being used for
The voltage changer PT3 that C phase voltage the is sampled and power pack CT3 for being sampled to C phase current；
Frequency tracking module includes resistance R9, resistance R12, resistance R13, resistance R10, amplifier UB, diode DA1, diode
DA2, capacitor C17, comparator UA1A, resistance R8, resistance R11 and one shot inverter U4, the one end resistance R9 connect voltage transformation
Output end, the other end of device PT1 connect the negative input end of amplifier UB, and the positive input terminal of amplifier UB passes through resistance R12 connection amplifier
The output end of UB, the positive input terminal of amplifier UB also pass through resistance R13 connection ground wire, and the output end of amplifier UB is connected by resistance R10
The positive input terminal of comparator UA1A is connect, the anode of the positive input terminal connection diode DA1 of comparator UA1A, diode DA1's is negative
Pole passes through the output end of resistance R8 connection comparator UA1A, and the positive input terminal of comparator UA1A is also connected with the cathode of diode DA2,
The anode connection ground wire of diode DA2, capacitor C17 is in parallel with diode DA2, and the negative input end of comparator UA1A connects ground wire,
The output end of comparator UA1A passes through the I1 pin of resistance R11 connection one shot inverter U4, the O pin of one shot inverter U4
For the output end of frequency tracking module；
Master control borad includes RS485 module, A/D module, MCU module, outputs interface and external memory modules, RS485 module, AD
Module outputs interface and external memory modules are connect with MCU module；
It opens and includes pressure acquisition module, temperature collecting module, GPRS communication module into plate and open into module；
The connection of one input terminal of pressure acquisition module and A/D module, GPRS communication module connect MCU module；
Temperature collecting module includes programmable current source U6, temperature sensor PT1 and resistance R54, and programmable current source U6's is defeated
Enter end connection 5V power supply, the one end of output end by resistance R9 connection temperature sensor PT1, the other end of temperature sensor PT1
By resistance R54 connection ground wire, resistance R9 connect an input terminal of A/D module with the connecting node of temperature sensor PT1；
Open into module include boost module U5, capacitor C24, resistance R3, resistance R5, capacitor C1, capacitor C3, resistance R4, resistance R6,
Optocoupler U1, optocoupler U3, resistance R2 and resistance R7,1 foot of optocoupler U1 outside resistance R3 connection first by opening into signal KIN1, light
For 1 foot of coupling U3 by opening outside resistance R5 connection second into signal KIN2,2 feet of optocoupler U1 and 2 feet of optocoupler U3 are all connected with ground
Line, the ground wire also pass through capacitor C24 connection the earth；Capacitor C1 and capacitor R4 be connected in parallel optocoupler U1 1 foot and 2 feet it
Between, capacitor C3 and capacitor R6 are connected in parallel between 1 foot of optocoupler U3 and 2 feet, and one of the 4 feet connection MCU module of optocoupler U1
I/O port, an I/O port of the 4 feet connection MCU module of optocoupler U3, resistance R2 is the pull-up resistor of 4 feet of optocoupler U1, and resistance R7 is
The pull-up resistor of 4 feet of optocoupler U3；
The input terminal of boost module U5 connects the 5V power supply, output end and provides 24V power supply for external equipment.
2. a kind of distribution transformer Integral digital intelligent terminal as described in claim 1, it is characterised in that: described
The model MAX485ESA of RS485 module, the model AD7606 of A/D module, the model SIM32F407ZGT6 of MCU module,
External memory modules include EEROM chip and RAM chip, the model CTA25256 of EEROM chip, the model of RAM chip
For IS61LV51216.
3. a kind of distribution transformer Integral digital intelligent terminal as described in claim 1, it is characterised in that: the A phase
Current-voltage sampling circuit include the voltage changer PT1, the power pack CT1, capacitor C6, capacitor C8, resistance R3,
Resistance R2, capacitor C5 and capacitor C7, the voltage changer PT1 for being sampled to A phase voltage, capacitor C6, capacitor C8 and
Resistance R3 constitutes the RC filter circuit of the voltage changer PT1 output end, and the power pack CT1 is used for A phase electricity
Stream is sampled, and resistance R2, capacitor C5 and capacitor C7 constitute the RC filter circuit of the output end of the power pack CT1；
The B phase current voltage sampling circuit includes the voltage changer PT2, the power pack CT2, capacitor C10, electricity
Hold C12, resistance R5, resistance R4, capacitor C9 and capacitor C11, the voltage changer PT2 is used to sample B phase voltage, electric
Hold C10, capacitor C12 and resistance R5 and constitutes the RC filter circuit of the voltage changer PT2 output end, the power pack
For CT2 for sampling to B phase current, resistance R4, capacitor C9 and capacitor C11 constitute the output of the power pack CT2
The RC filter circuit at end；
The C phase current voltage sampling circuit includes the voltage changer PT3, the power pack CT3, capacitor C14, electricity
Hold C16, resistance R7, resistance R6, capacitor C13 and capacitor C15, the voltage changer PT3 for being sampled to C phase voltage,
Capacitor C14, capacitor C16 and resistance R7 constitute the RC filter circuit of the voltage changer PT3 output end, the current transformation
For device CT3 for sampling to C phase current, resistance R6, capacitor C13 and capacitor C15 constitute the defeated of the power pack CT3
The RC filter circuit of outlet.
4. a kind of distribution transformer Integral digital intelligent terminal as claimed in claim 3, it is characterised in that: the voltage
The model of converter PT1, the voltage changer PT2 and the voltage changer PT3 are TR1176-3C；The electric current becomes
The model of parallel operation CT1, the power pack CT2 and the power pack CT3 are TR0176-4C.
5. a kind of distribution transformer Integral digital intelligent terminal as described in claim 1, it is characterised in that: the amplifier
The model OP4177AR of UB；The model LM393DR of the comparator UA1A；The model of the one shot inverter U4
SN74LVC1G14DBV, the model LD10-20B05 of the AC-DC module；The model A0512S_ of the boost module U7
1WR2；The model LT3092 of the programmable current source U6, temperature sensor PT100；The model of the boost module U5
F0524S-2WR2。
6. a kind of distribution transformer Integral digital intelligent terminal as described in claim 1, it is characterised in that: the GPRS
The model Air202 of communication module；The model MD-PSG010 pressure sensor of the pressure acquisition module.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920740678.1U CN209709758U (en) | 2019-05-22 | 2019-05-22 | A kind of distribution transformer Integral digital intelligent terminal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920740678.1U CN209709758U (en) | 2019-05-22 | 2019-05-22 | A kind of distribution transformer Integral digital intelligent terminal |
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| CN209709758U true CN209709758U (en) | 2019-11-29 |
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ID=68651224
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110022001A (en) * | 2019-05-22 | 2019-07-16 | 特变电工智能电气有限责任公司 | A kind of distribution transformer Integral digital intelligent terminal |
-
2019
- 2019-05-22 CN CN201920740678.1U patent/CN209709758U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110022001A (en) * | 2019-05-22 | 2019-07-16 | 特变电工智能电气有限责任公司 | A kind of distribution transformer Integral digital intelligent terminal |
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