CN206649076U - A kind of loaded capacity-regulated control data acquisition circuit of middle pressure transformer - Google Patents
A kind of loaded capacity-regulated control data acquisition circuit of middle pressure transformer Download PDFInfo
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- CN206649076U CN206649076U CN201720415114.1U CN201720415114U CN206649076U CN 206649076 U CN206649076 U CN 206649076U CN 201720415114 U CN201720415114 U CN 201720415114U CN 206649076 U CN206649076 U CN 206649076U
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Abstract
The utility model discloses a kind of middle loaded capacity-regulated control data acquisition circuit of pressure transformer, including current signal Acquisition Circuit and voltage signal acquisition circuit, and first signal conditioning circuit and secondary signal modulate circuit, first signal conditioning circuit is made up of first voltage follower, the first filter circuit, first voltage biasing circuit and the first anti-phase scaling circuit being sequentially connected, and the output end of the first anti-phase scaling circuit and the input of microprocessor connect；Secondary signal modulate circuit is made up of second voltage follower, the second filter circuit, second voltage biasing circuit and the second anti-phase scaling circuit being sequentially connected, and the output end of the second anti-phase scaling circuit and the input of microprocessor connect.The utility model circuit structure is simple, reasonable in design, realizes that convenient and cost is low, and data acquisition is reliable and stable, and effective reliable data source can be provided for the loaded capacity-regulated control of pressure transformer in realization, practical, is easy to promote the use of.
Description
Technical field
The utility model belongs to loaded capacity-regulated transformer technical field, and in particular to a kind of middle loaded capacity-regulated control of pressure transformer
System data acquisition circuit.
Background technology
The wastage reducing and energy saving of power system is one of important component of constructing well-off society, particularly rural area
Distribution, have a large capacity and a wide range, its saving energy and decreasing loss problem, which had both been related to vast rural area huge numbers of families, provides high-quality electric energy.It is direct shadow again
Ring electric power enterprise economic benefit.The loss of transformer accounts for the major part of grid loss, its iron loss (open circuit loss) and copper loss
(load loss) changes with the change of the capacity of transformer.And in China's Rural Power Distribution Network, load changes over time ratio
It is larger, there is the characteristics of seasonal strong, electricity consumption is concentrated.When electricity consumption is concentrated, running overload easily occurs for transformer：And
In electricity consumption few season, some transformers almost in no-load running state, so prevent operating transformer from reaching specified
Power operation.So that almost no-load running increases open circuit loss to transformer, cause substantial amounts of electric energy loss.And select " mother and sons' change
Depressor " can increase substantial amounts of investment again.In the most of regions in China all using no-load capacitance-regulating transformer, but it is in switching capacity
When, it is necessary to cut off load.Through can just be powered after the completion of capacity transfer to load.This reduces the reliability of power supply.With skill
The development of art, loaded capacity-regulated transformer progressively use on a large scale in power network.
Loaded capacity-regulated transformer can switch between two fixed capacities are automatic.Gao Rong is switched in running overload
Amount state, low capacity state is switched in no-load running state.Such mode had both solved running overload and unloaded fortune
The problem of row, also improve the reliability and security of power supply.And reduce copper loss and sky when transformer overload is run
Iron loss during carrying row, improve the efficiency of electrical grid transmission.Electricity consumption be can apply to the big rural power grids of seasonal fluctuation and use
The similar region such as the market of electricity concentration and factory.
For the loaded capacity-regulated control of pressure transformer in realizing, it is necessary to the parameter of the load of centering pressure transformer secondary side
Measure, the data of measurement are transferred to processor and calculate capacity compared with capacity transfer definite value, can be controlled by processor
Capacitance switch closure on winding, disconnect or keep original state, so as in realizing pressure transformer it is loaded capacity-regulated, and to realize
Measurement, first has to realize the collection of data；But in the prior art, also lack that circuit structure is simple, reasonable in design, realization side
Just and cost is low, functional reliability is high, the practical loaded capacity-regulated control data acquisition circuit of middle pressure transformer.
Utility model content
Technical problem to be solved in the utility model is to be directed to above-mentioned deficiency of the prior art, there is provided is pressed in a kind of
The loaded capacity-regulated control data acquisition circuit of transformer, its circuit structure is simple, reasonable in design, realizes that convenient and cost is low, number
It is reliable and stable according to gathering, effective reliable data source can be provided for the loaded capacity-regulated control of pressure transformer in realization, it is practical
Property is strong, is easy to promote the use of.
In order to solve the above technical problems, the technical solution adopted in the utility model is：A kind of middle pressure transformer is loaded capacity-regulated
Control data acquisition circuit, it is characterised in that：Electric current including the load for centering pressure transformer secondary side carries out real-time
The voltage that the current signal Acquisition Circuit of collection and voltage for the load of centering pressure transformer secondary side are gathered in real time
Signal acquisition circuit, and the signal for being exported to current signal Acquisition Circuit are nursed one's health and are transferred to the of microprocessor
One signal conditioning circuit and for being nursed one's health the signal of voltage signal acquisition circuit output and being transferred to microprocessor
Binary signal modulate circuit, first signal conditioning circuit by be sequentially connected first voltage follower, the first filter circuit,
One voltage offset electric circuit and the first anti-phase scaling circuit composition, the output end of the current signal Acquisition Circuit and the first electricity
The input connection of follower is pressed, the output end of the first anti-phase scaling circuit and the input of microprocessor connect；
The secondary signal modulate circuit is by the second voltage follower, the second filter circuit, second voltage biasing circuit that are sequentially connected
With the second anti-phase scaling circuit composition, the output end of the voltage signal acquisition circuit and the input of second voltage follower
End connection, the output end of the second anti-phase scaling circuit and the input of microprocessor connect.
The loaded capacity-regulated control data acquisition circuit of above-mentioned middle pressure transformer, it is characterised in that：The current signal is adopted
Collector includes Current Transmit, resistance R1 and resistance RS1, the both ends of the first side winding of the Current Transmit with
The load side connection of middle pressure transformer, and the both ends with resistance R1 are connected respectively；The secondary side winding of the Current Transmit
One end be connected with resistance RS1 one end and for the output end of current signal Acquisition Circuit, the Current Transmit it is secondary
The other end of side winding is connected and is grounded with the resistance RS1 other end.
The loaded capacity-regulated control data acquisition circuit of above-mentioned middle pressure transformer, it is characterised in that：The current transformer
CT model WYCT21C.
The loaded capacity-regulated control data acquisition circuit of above-mentioned middle pressure transformer, it is characterised in that：The voltage signal is adopted
Collector includes voltage transformer pt, resistance R2 and resistance RS2, one end and the electricity of the first side winding of the voltage transformer pt
Hinder R2 one end connection, the other end of the first side winding of the voltage transformer pt and the resistance R2 other end with middle pressure
The load side connection of transformer；One end of the secondary side winding of the voltage transformer pt is connected with resistance RS2 one end and is
The output end of voltage signal acquisition circuit, the other end of the secondary side winding of the voltage transformer pt are another with resistance RS2's
End connection and ground connection.
The loaded capacity-regulated control data acquisition circuit of above-mentioned middle pressure transformer, it is characterised in that：The voltage transformer
PT model LCTV31CE-2mA/2mA.
The loaded capacity-regulated control data acquisition circuit of above-mentioned middle pressure transformer, it is characterised in that：The first voltage with
With the input that in-phase input end of the device including operational amplifier U1, the operational amplifier U1 is first voltage follower, institute
The inverting input for stating operational amplifier U1 is connected with output end, and the output end of the operational amplifier U1 follows for first voltage
The output end of device；First filter circuit includes operational amplifier U2, resistance R3, resistance R4, resistance R5, resistance R13, electric capacity
C1 and electric capacity C2, one end after the resistance R13 and resistance R3 connect is the input of the first filter circuit, the resistance R13
The other end after being connected with resistance R3 is connected with operational amplifier U2 in-phase input end, the company of the resistance R13 and resistance R3
Connect end to be connected with operational amplifier U2 output end by electric capacity C1, the in-phase input end of the operational amplifier U2 passes through electricity
Hold C2 ground connection, the inverting input of the operational amplifier U2 is grounded by resistance R4, and passes through resistance R5 and operational amplifier
U2 output end connection, the output end of the operational amplifier U2 are the output end of the first filter circuit；The first voltage is inclined
One end that circuits include operational amplifier U3, resistance R6, resistance R7, resistance R8 and resistance R9, the resistance R6 is the first electricity
The input of biasing circuit is pressed, the other end of the resistance R6 is connected with operational amplifier U3 inverting input, the computing
Amplifier U3 inverting input is connected by resistance R7 with+5V power supplys, and passes through resistance R9 and operational amplifier U3 output
End connection, the in-phase input end of the operational amplifier U3 are grounded by resistance R8, and the output end of the operational amplifier U3 is
The output end of first voltage biasing circuit；The first anti-phase scaling circuit includes operational amplifier U4, resistance R10, electricity
The one end for hindering R11 and resistance R12, the resistance R10 is the input of the first anti-phase scaling circuit, the resistance R10's
The other end is connected with operational amplifier U4 inverting input, and the inverting input of the operational amplifier U4 passes through resistance R11
It is connected with operational amplifier U4 output end, the in-phase input end of the operational amplifier U4 is grounded by resistance R12, the fortune
The output end for calculating amplifier U4 is the output end of the first anti-phase scaling circuit.
The loaded capacity-regulated control data acquisition circuit of above-mentioned middle pressure transformer, it is characterised in that：The second voltage with
With the input that in-phase input end of the device including operational amplifier U5, the operational amplifier U5 is second voltage follower, institute
The inverting input for stating operational amplifier U5 is connected with output end, and the output end of the operational amplifier U5 follows for second voltage
The output end of device；Second filter circuit include operational amplifier U6, resistance R14, resistance R15, resistance R16, resistance R17,
Electric capacity C3 and electric capacity C4, one end after the resistance R14 and resistance R15 connect is the input of the second filter circuit, the electricity
The other end after resistance R14 and resistance R15 series connection is connected with operational amplifier U6 in-phase input end, the resistance R14 and resistance
R15 connection end is connected by electric capacity C3 with operational amplifier U6 output end, the in-phase input end of the operational amplifier U6
Be grounded by electric capacity C4, the inverting input of the operational amplifier U6 is grounded by resistance R16, and by resistance R17 with
Operational amplifier U6 output end connection, the output end of the operational amplifier U6 are the output end of the second filter circuit；It is described
Second voltage biasing circuit includes operational amplifier U7, resistance R18, resistance R19, resistance R20 and resistance R21, the resistance R18
One end be second voltage biasing circuit input, the other end of the resistance R18 and operational amplifier U7 anti-phase input
End connection, the inverting input of the operational amplifier U7 are connected by resistance R19 with+5V power supplys, and pass through resistance R21 and fortune
Amplifier U7 output end connection is calculated, the in-phase input end of the operational amplifier U7 is grounded by resistance R20, and the computing is put
Big device U7 output end is the output end of second voltage biasing circuit；The second anti-phase scaling circuit includes operation amplifier
Device U8, resistance R22, the input that resistance R23 and resistance R24, the resistance R22 one end are the second anti-phase scaling circuit
End, the other end of the resistance R22 are connected with operational amplifier U8 inverting input, and the operational amplifier U8's is anti-phase defeated
Enter end to be connected with operational amplifier U8 output end by resistance R23, the in-phase input end of the operational amplifier U8 passes through electricity
R24 ground connection is hindered, the output end of the operational amplifier U8 is the output end of the second anti-phase scaling circuit.
The loaded capacity-regulated control data acquisition circuit of above-mentioned middle pressure transformer, it is characterised in that：The microprocessor is
DSP TMS320F2812, the output end of the first anti-phase scaling circuit and the second anti-phase ratio fortune
The output end for calculating circuit is connected with DSP TMS320F2812 P1.1 pins and P1.2 pins respectively.
The utility model has advantages below compared with prior art：
1st, circuit structure of the present utility model is simple, reasonable in design, realizes that convenient and cost is low.
2nd, data acquisition of the present utility model is reliable and stable, and functional reliability is high.
3rd, the utility model be capable of the load of centering pressure transformer secondary side electric current and voltage carry out in real time collection and it is right
After signal carries out voltage follow, filtering, biasing and the processing of anti-phase scale operation, microprocessor is transmitted further to, can be in realizing
The loaded capacity-regulated control of pressure transformer provides effectively reliable data source.
4th, of the present utility model practical, using effect is good, is easy to promote the use of.
In summary, circuit structure of the present utility model is simple, reasonable in design, realizes that convenient and cost is low, data acquisition
It is reliable and stable, effective reliable data source can be provided for the loaded capacity-regulated control of pressure transformer in realization, it is practical, just
In promoting the use of.
Below by drawings and examples, the technical solution of the utility model is described in further detail.
Brief description of the drawings
Fig. 1 is schematic block circuit diagram of the present utility model.
Fig. 2 is the circuit theory diagrams of the utility model current signal Acquisition Circuit.
Fig. 3 is the circuit theory diagrams of the utility model voltage signal acquisition circuit.
Fig. 4 is the circuit theory diagrams of the signal conditioning circuit of the utility model first.
Fig. 5 is the circuit theory diagrams of the utility model secondary signal modulate circuit.
Description of reference numerals:
1-current signal Acquisition Circuit；2-voltage signal acquisition circuit；3-the first signal conditioning circuit；
3-1-first voltage follower；The filter circuits of 3-2-first；3-3-first voltage biasing circuit；
The anti-phase scaling circuit of 3-4-the first；4-secondary signal modulate circuit；
4-1-second voltage follower；The filter circuits of 4-2-second；4-3-second voltage biasing circuit；
The anti-phase scaling circuit of 4-4-the second；5-microprocessor.
Embodiment
As shown in figure 1, the loaded capacity-regulated control data acquisition circuit of middle pressure transformer of the present utility model, including for pair
Current signal Acquisition Circuit 1 that the electric current of the load of middle pressure transformer secondary side is gathered in real time and for centering pressure transformer
The voltage signal acquisition circuit 2 that the voltage of the load of secondary side is gathered in real time, and for current signal Acquisition Circuit 1
The signal of output nursed one's health and be transferred to microprocessor 5 the first signal conditioning circuit 3 and for voltage signal acquisition electricity
The signal that road 2 exports is nursed one's health and is transferred to the secondary signal modulate circuit 4 of microprocessor 5, the first signal condition electricity
Road 3 is anti-by the first voltage follower 3-1, the first filter circuit 3-2, first voltage biasing circuit 3-3 and first being sequentially connected
Phase Proportion computing circuit 3-4 is formed, the output end of the current signal Acquisition Circuit 1 and first voltage follower 3-1 input
End connection, the output end of the first anti-phase scaling circuit 3-4 are connected with the input of microprocessor 5；Second letter
Number modulate circuit 4 is by the second voltage follower 4-1, the second filter circuit 4-2, second voltage biasing circuit 4-3 that are sequentially connected
With the second anti-phase scaling circuit 4-4 compositions, output end and the second voltage follower of the voltage signal acquisition circuit 2
4-1 input connection, the output end of the second anti-phase scaling circuit 4-4 are connected with the input of microprocessor 5.
In the present embodiment, as shown in Fig. 2 the current signal Acquisition Circuit 1 includes Current Transmit, resistance R1 and electricity
Hinder RS1, the both ends (CT-IN1 and CT-IN2 in Fig. 2) of the first side winding of the Current Transmit with middle buckling pressure
The load side connection of device, and the both ends with resistance R1 are connected respectively；One end of the secondary side winding of the Current Transmit with
Resistance RS1 one end connection and for current signal Acquisition Circuit 1 output end (CT-OUT in Fig. 2), the current transformer
The other end of CT secondary side winding is connected and is grounded with the resistance RS1 other end.
In the present embodiment, the model WYCT21C of the Current Transmit.
In the present embodiment, as shown in figure 3, the voltage signal acquisition circuit 2 include voltage transformer pt, resistance R2 and
Resistance RS2, one end of the first side winding of the voltage transformer pt are connected with resistance R2 one end, the voltage transformer
The other end (PT-IN2 in Fig. 3) of PT first side winding and the resistance R2 other end (PT-IN1 in Fig. 3) with middle pressure
The load side connection of transformer；One end of the secondary side winding of the voltage transformer pt is connected with resistance RS2 one end and is
The output end (PT-OUT in Fig. 3) of voltage signal acquisition circuit 2, the secondary side winding of the voltage transformer pt it is another
End is connected and is grounded with the resistance RS2 other end.
In the present embodiment, the model LCTV31CE-2mA/2mA of the voltage transformer pt.
In the present embodiment, as shown in figure 4, the first voltage follower 3-1 includes operational amplifier U1, the computing
Amplifier U1 in-phase input end be first voltage follower 3-1 input, the inverting input of the operational amplifier U1
It is connected with output end, the output end of the operational amplifier U1 is first voltage follower 3-1 output end；First filtering
Circuit 3-2 includes operational amplifier U2, resistance R3, resistance R4, resistance R5, resistance R13, electric capacity C1 and electric capacity C2, the resistance
The input that one end after R13 and resistance R3 series connection is the first filter circuit 3-2, after resistance R13 and resistance the R3 series connection
The other end is connected with operational amplifier U2 in-phase input end, the connection end of the resistance R13 and resistance R3 by electric capacity C1 with
Operational amplifier U2 output end connection, the in-phase input end of the operational amplifier U2 are grounded by electric capacity C2, the computing
Amplifier U2 inverting input is grounded by resistance R4, and is connected by resistance R5 with operational amplifier U2 output end, institute
The output end for stating operational amplifier U2 is the first filter circuit 3-2 output end；The first voltage biasing circuit 3-3 includes fortune
The one end for calculating amplifier U3, resistance R6, resistance R7, resistance R8 and resistance R9, the resistance R6 is first voltage biasing circuit 3-
3 input, the other end of the resistance R6 are connected with operational amplifier U3 inverting input, the operational amplifier U3
Inverting input be connected by resistance R7 with+5V power supplys, and be connected by resistance R9 with operational amplifier U3 output end, institute
The in-phase input end for stating operational amplifier U3 is grounded by resistance R8, and the output end of the operational amplifier U3 is inclined for first voltage
Circuits 3-3 output end；The first anti-phase scaling circuit 3-4 includes operational amplifier U4, resistance R10, resistance R11
With resistance R12, one end of the resistance R10 is the first anti-phase scaling circuit 3-4 input, and the resistance R10's is another
One end is connected with operational amplifier U4 inverting input, the inverting input of the operational amplifier U4 by resistance R11 with
Operational amplifier U4 output end connection, the in-phase input end of the operational amplifier U4 are grounded by resistance R12, the computing
Amplifier U4 output end is the first anti-phase scaling circuit 3-4 output end.
When it is implemented, the operational amplifier U1, operational amplifier U2, operational amplifier U3 and operational amplifier U4
Model LM324.
In the present embodiment, as shown in figure 5, the second voltage follower 4-1 includes operational amplifier U5, the computing
Amplifier U5 in-phase input end be second voltage follower 4-1 input, the inverting input of the operational amplifier U5
It is connected with output end, the output end of the operational amplifier U5 is second voltage follower 4-1 output end；Second filtering
Circuit 4-2 includes operational amplifier U6, resistance R14, resistance R15, resistance R16, resistance R17, electric capacity C3 and electric capacity C4, the electricity
Hinder the input that one end after R14 and resistance R15 series connection is the second filter circuit 4-2, resistance R14 and resistance the R15 series connection
The other end afterwards is connected with operational amplifier U6 in-phase input end, and the connection end of the resistance R14 and resistance R15 pass through electric capacity
C3 is connected with operational amplifier U6 output end, and the in-phase input end of the operational amplifier U6 is grounded by electric capacity C4, described
Operational amplifier U6 inverting input is grounded by resistance R16, and is connected by resistance R17 and operational amplifier U6 output end
Connect, the output end of the operational amplifier U6 is the second filter circuit 4-2 output end；The second voltage biasing circuit 4-3
One end including operational amplifier U7, resistance R18, resistance R19, resistance R20 and resistance R21, the resistance R18 is the second electricity
Biasing circuit 4-3 input is pressed, the other end of the resistance R18 is connected with operational amplifier U7 inverting input, described
Operational amplifier U7 inverting input is connected by resistance R19 with+5V power supplys, and passes through resistance R21 and operational amplifier U7
Output end connection, the in-phase input end of the operational amplifier U7 is grounded by resistance R20, and the operational amplifier U7's is defeated
Go out output end of the end for second voltage biasing circuit 4-3；The second anti-phase scaling circuit 4-4 includes operational amplifier
The input that U8, resistance R22, resistance R23 and resistance R24, the resistance R22 one end are the second anti-phase scaling circuit 4-4
End, the other end of the resistance R22 are connected with operational amplifier U8 inverting input, and the operational amplifier U8's is anti-phase defeated
Enter end to be connected with operational amplifier U8 output end by resistance R23, the in-phase input end of the operational amplifier U8 passes through electricity
R24 ground connection is hindered, the output end of the operational amplifier U8 is the second anti-phase scaling circuit 4-4 output end.
When it is implemented, the operational amplifier U5, operational amplifier U6, operational amplifier U7 and operational amplifier U8
Model LM324.
In the present embodiment, the microprocessor 5 is DSP TMS320F2812, the first anti-phase ratio
Example computing circuit 3-4 output end and the second anti-phase scaling circuit 4-4 output end respectively with DSP
TMS320F2812 P1.1 pins connect with P1.2 pins.
The utility model is in use, the electric current of the load of the centering pressure transformer secondary side of current signal Acquisition Circuit 1 is carried out
Collection in real time, the signal collected is successively by first voltage follower 3-1, the first filter circuit 3-2, first voltage biased electrical
After the anti-phase scaling circuit 3-4 of road 3-3 and first carry out voltage follow, filtering, biasing and the processing of anti-phase scale operation, obtain
5 acceptable voltage signal of microprocessor is simultaneously transferred to microprocessor 5；The centering pressure transformer two of voltage signal acquisition circuit 2
The voltage of the load of secondary side is gathered in real time, and the signal collected is successively by second voltage follower 4-1, the second filtering
The anti-phase scaling circuit 4-4 of circuit 4-2, second voltage biasing circuit 4-3 and second carry out voltage follow, filtering, biasing and
After anti-phase scale operation processing, obtain 5 acceptable voltage signal of microprocessor and be transferred to microprocessor 5；Microprocessor
5 gather its signal received respectively by P1.1 pins and P1.2 pins.
It is described above, only it is preferred embodiment of the present utility model, not the utility model is imposed any restrictions, every
Any simple modification, change and the equivalent structure change made according to the utility model technical spirit to above example, still
Belong in the protection domain of technical solutions of the utility model.
Claims (8)
- A kind of 1. loaded capacity-regulated control data acquisition circuit of middle pressure transformer, it is characterised in that：Including for centering buckling pressure Current signal Acquisition Circuit (1) that the electric current of the load of device secondary side is gathered in real time and for centering pressure transformer secondary side Load the voltage signal acquisition circuit (2) that is gathered in real time of voltage, and for defeated to current signal Acquisition Circuit (1) The signal gone out is nursed one's health and is transferred to the first signal conditioning circuit (3) of microprocessor (5) and for voltage signal acquisition The signal of circuit (2) output is nursed one's health and is transferred to the secondary signal modulate circuit (4) of microprocessor (5), first letter Number modulate circuit (3) is by the first voltage follower (3-1), the first filter circuit (3-2), first voltage biased electrical that are sequentially connected Road (3-3) and the first anti-phase scaling circuit (3-4) composition, the output end and first of the current signal Acquisition Circuit (1) The input connection of voltage follower (3-1), the output end and microprocessor of the first anti-phase scaling circuit (3-4) (5) input connection；The secondary signal modulate circuit (4) by be sequentially connected second voltage follower (4-1), second filter Wave circuit (4-2), second voltage biasing circuit (4-3) and the second anti-phase scaling circuit (4-4) composition, the voltage signal The output end of Acquisition Circuit (2) is connected with the input of second voltage follower (4-1), the second anti-phase scaling circuit The output end of (4-4) is connected with the input of microprocessor (5).
- 2. according to the loaded capacity-regulated control data acquisition circuit of middle pressure transformer described in claim 1, it is characterised in that：It is described Current signal Acquisition Circuit (1) includes Current Transmit, resistance R1 and resistance RS1, the primary side of the Current Transmit Load side of the both ends of winding with middle pressure transformer is connected, and the both ends with resistance R1 are connected respectively；The current transformer One end of CT secondary side winding is connected with resistance RS1 one end and for the output end of current signal Acquisition Circuit (1), the electricity The other end of current transformer CT secondary side winding is connected and is grounded with the resistance RS1 other end.
- 3. according to the loaded capacity-regulated control data acquisition circuit of middle pressure transformer described in claim 2, it is characterised in that：It is described The model WYCT21C of Current Transmit.
- 4. according to the loaded capacity-regulated control data acquisition circuit of middle pressure transformer described in claim 1, it is characterised in that：It is described Voltage signal acquisition circuit (2) includes voltage transformer pt, resistance R2 and resistance RS2, the primary side of the voltage transformer pt One end of winding is connected with resistance R2 one end, and the other end of the first side winding of the voltage transformer pt and resistance R2's is another Load side of the one end with middle pressure transformer is connected；One end of the secondary side winding of the voltage transformer pt is with resistance RS2's One end connect and for voltage signal acquisition circuit (2) output end, the other end of the secondary side winding of the voltage transformer pt It is connected and is grounded with the resistance RS2 other end.
- 5. according to the loaded capacity-regulated control data acquisition circuit of middle pressure transformer described in claim 4, it is characterised in that：It is described The model LCTV31CE-2mA/2mA of voltage transformer pt.
- 6. according to the loaded capacity-regulated control data acquisition circuit of middle pressure transformer described in claim 1, it is characterised in that：It is described The in-phase input end of first voltage follower (3-1) including operational amplifier U1, the operational amplifier U1 for first voltage with With device (3-1) input, the inverting input of the operational amplifier U1 is connected with output end, the operational amplifier U1's Output end is the output end of first voltage follower (3-1)；First filter circuit (3-2) includes operational amplifier U2, electricity R3, resistance R4, resistance R5, resistance R13, electric capacity C1 and electric capacity C2 are hindered, one end after resistance R13 and resistance the R3 series connection is the The input of one filter circuit (3-2), the same phase of the other end and operational amplifier U2 after resistance R13 and resistance the R3 series connection Input is connected, and the connection end of the resistance R13 and resistance R3 are connected by electric capacity C1 with operational amplifier U2 output end, institute The in-phase input end for stating operational amplifier U2 is grounded by electric capacity C2, and the inverting input of the operational amplifier U2 passes through resistance R4 is grounded, and is connected by resistance R5 with operational amplifier U2 output end, and the output end of the operational amplifier U2 is first The output end of filter circuit (3-2)；The first voltage biasing circuit (3-3) includes operational amplifier U3, resistance R6, resistance R7, resistance R8 and resistance R9, the resistance R6 one end be first voltage biasing circuit (3-3) input, the resistance R6 The other end be connected with operational amplifier U3 inverting input, the inverting input of the operational amplifier U3 passes through resistance R7 It is connected with+5V power supplys, and is connected by resistance R9 with operational amplifier U3 output end, the operational amplifier U3's is same mutually defeated Enter end to be grounded by resistance R8, the output end of the operational amplifier U3 is the output end of first voltage biasing circuit (3-3)；Institute Stating the first anti-phase scaling circuit (3-4) includes operational amplifier U4, resistance R10, resistance R11 and resistance R12, the resistance R10 one end be the first anti-phase scaling circuit (3-4) input, the other end and operational amplifier of the resistance R10 U4 inverting input connection, the inverting input of the operational amplifier U4 pass through the defeated of resistance R11 and operational amplifier U4 Go out end connection, the in-phase input end of the operational amplifier U4 is grounded by resistance R12, the output end of the operational amplifier U4 For the output end of the first anti-phase scaling circuit (3-4).
- 7. according to the loaded capacity-regulated control data acquisition circuit of middle pressure transformer described in claim 1, it is characterised in that：It is described The in-phase input end of second voltage follower (4-1) including operational amplifier U5, the operational amplifier U5 for second voltage with With device (4-1) input, the inverting input of the operational amplifier U5 is connected with output end, the operational amplifier U5's Output end is the output end of second voltage follower (4-1)；Second filter circuit (4-2) includes operational amplifier U6, electricity Hinder R14, resistance R15, resistance R16, resistance R17, electric capacity C3 and electric capacity C4, one end after resistance R14 and resistance the R15 series connection For the second filter circuit (4-2) input, the other end and operational amplifier U6 after resistance R14 and resistance the R15 series connection In-phase input end connection, the connection end of the resistance R14 and resistance R15 passes through electric capacity C3 and operational amplifier U6 output end Connection, the in-phase input end of the operational amplifier U6 are grounded by electric capacity C4, the inverting input of the operational amplifier U6 It is grounded by resistance R16, and is connected by resistance R17 with operational amplifier U6 output end, the operational amplifier U6's is defeated Go out output end of the end for the second filter circuit (4-2)；The second voltage biasing circuit (4-3) includes operational amplifier U7, electricity The one end for hindering R18, resistance R19, resistance R20 and resistance R21, the resistance R18 is the input of second voltage biasing circuit (4-3) End, the other end of the resistance R18 are connected with operational amplifier U7 inverting input, and the operational amplifier U7's is anti-phase defeated Enter end to be connected with+5V power supplys by resistance R19, and be connected by resistance R21 with operational amplifier U7 output end, the computing Amplifier U7 in-phase input end is grounded by resistance R20, and the output end of the operational amplifier U7 is second voltage biased electrical The output end on road (4-3)；The second anti-phase scaling circuit (4-4) includes operational amplifier U8, resistance R22, resistance R23 With resistance R24, one end of the resistance R22 is the input of the second anti-phase scaling circuit (4-4), the resistance R22's The other end is connected with operational amplifier U8 inverting input, and the inverting input of the operational amplifier U8 passes through resistance R23 It is connected with operational amplifier U8 output end, the in-phase input end of the operational amplifier U8 is grounded by resistance R24, the fortune The output end for calculating amplifier U8 is the output end of the second anti-phase scaling circuit (4-4).
- 8. according to the loaded capacity-regulated control data acquisition circuit of middle pressure transformer described in claim 1, it is characterised in that：It is described Microprocessor (5) is DSP TMS320F2812, the output of the first anti-phase scaling circuit (3-4) End and the output end P1.1 with DSP TMS320F2812 respectively of the second anti-phase scaling circuit (4-4) Pin connects with P1.2 pins.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720415114.1U CN206649076U (en) | 2017-04-19 | 2017-04-19 | A kind of loaded capacity-regulated control data acquisition circuit of middle pressure transformer |
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|---|---|---|---|
| CN201720415114.1U CN206649076U (en) | 2017-04-19 | 2017-04-19 | A kind of loaded capacity-regulated control data acquisition circuit of middle pressure transformer |
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| CN206649076U true CN206649076U (en) | 2017-11-17 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110361671A (en) * | 2018-04-08 | 2019-10-22 | 佛山科学技术学院 | A kind of sampling module for UPS |
| CN112867928A (en) * | 2018-07-17 | 2021-05-28 | 哈勃股份有限公司 | Voltage collector for power distribution system device |
| US12081013B2 (en) | 2023-04-10 | 2024-09-03 | Hubbell Incorporated | Voltage harvester for power distribution system devices |
-
2017
- 2017-04-19 CN CN201720415114.1U patent/CN206649076U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110361671A (en) * | 2018-04-08 | 2019-10-22 | 佛山科学技术学院 | A kind of sampling module for UPS |
| CN112867928A (en) * | 2018-07-17 | 2021-05-28 | 哈勃股份有限公司 | Voltage collector for power distribution system device |
| US12081013B2 (en) | 2023-04-10 | 2024-09-03 | Hubbell Incorporated | Voltage harvester for power distribution system devices |
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