CN206673853U - A kind of adaptive power input regulation circuit - Google Patents
A kind of adaptive power input regulation circuit Download PDFInfo
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- CN206673853U CN206673853U CN201720306135.XU CN201720306135U CN206673853U CN 206673853 U CN206673853 U CN 206673853U CN 201720306135 U CN201720306135 U CN 201720306135U CN 206673853 U CN206673853 U CN 206673853U
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Abstract
The utility model discloses a kind of adaptive power input to adjust circuit, it includes the first transformer inputs and the second transformer inputs are connected in parallel to power input, first transformer output end is connected with the first full-wave rectification bridge B1 inputs, the positive pole of first full-wave rectification bridge B1 output ends is connected with one-way SCR V1 inputs, resistance R1 is connected between one-way SCR V1 inputs and control terminal, control relay K2 normally opened contact is connected between being connected between one-way SCR V1 output ends and control terminal；Second transformer output end is connected with the second full-wave rectification bridge B2 inputs, and the positive pole of the second full-wave rectification bridge B2 output ends is connected with one-way SCR V1 output ends；Voltage comparator D4 inputs are connected with one-way SCR V1 output ends, and voltage comparator D4 output ends are connected with control relay K2 control coils；Solve the technical problems such as the earth wire of power transmission line coupling power stability of a system and poor reliability.
Description
Technical field
The utility model belongs to power technology, more particularly to a kind of adaptive power input regulation circuit.
Background technology
The power supply of domestic on-line monitoring device for transmission line mainly uses following several power supplys at present：Luminous energy power supply system
System, powered by wind energy system, lithium battery power supply system, high pressure coupling electric power system.Wherein luminous energy electric power system also has using at most
Part uses powered by wind energy system.Both systems are required for using rechargeable battery, with regard to system from the point of view of current service condition by
It is very undesirable that external environment influences big effect.Lithium battery power supply system is mainly used in low-power consumption intermittence monitoring unit, Wu Fashi
For powerful live main frame.High pressure coupling electric power system reliability and sustainability be far longer than it is above several, still
Because it is arranged on high-tension line, power can not export use, and its use range is restricted, and be used only for needing in high pressure
The place that side is monitored.It is affected by environment that the successful exploitation of earth wire of power transmission line coupling power system had both avoided luminous energy wind energy
The problem of big, the defects of high pressure coupling electricity getting system power can not export is overcome again, is carried for on-line monitoring device for transmission line
A kind of not only convenient but also reliable high stability power supply is supplied.
The operation principle of earth wire of power transmission line coupling power system is that energy is taken from transmission line of electricity lightning protection ground wire, and power transmission line
Space magnetic field is produced when energy on the lightning protection ground wire of road is by passing through alternating current on transmission line of electricity bus to change, and this change
Magnetic field intercepts lightning protection ground wire so as to producing secondary induced-current and voltage on lightning protection ground wire.Therefore in transmission line of electricity lightning proof ground
Caused electric current and voltage are much lower relative to the electric current on transmission line of electricity bus and voltage on line, and with bus current
Change, induced-current and voltage on lightning protection ground wire can also occur bigger change, pass through actual test, its voltage transformation
Scope is exchange 3V to 65V or so, and it is transmission of electricity how electric energy that is this faint and fluctuating effectively to be taken out and is used
The key of line grounding wire coupling power system energy reliability service.And the mu balanced circuit of prior art or the input range of pwm circuit
Above-mentioned so wide scope is extremely difficult to, causes the earth wire of power transmission line coupling power stability of a system and poor reliability.
Utility model content：
The technical problems to be solved in the utility model：A kind of adaptive power input regulation circuit is provided, it is existing to solve
There are the mu balanced circuit of technology or pwm circuit input voltage range to meet earth wire of power transmission line coupling power system, it is caused
The technical problem such as the earth wire of power transmission line coupling power stability of a system and poor reliability.
Technical solutions of the utility model：
A kind of adaptive power input regulation circuit, it includes the first transformer and the second transformer, the first transformer
Input and the second transformer inputs are connected in parallel to power input, the first transformer output end and the first full-wave rectification bridge B1
Input is connected, and the positive pole of the first full-wave rectification bridge B1 output ends is connected with one-way SCR V1 inputs, one-way SCR V1
Resistance R1 is connected between input and control terminal, is connected between being connected between one-way SCR V1 output ends and control terminal
Control relay K2 normally opened contact；Second transformer output end is connected with the second full-wave rectification bridge B2 inputs, the second all-wave
The positive pole of rectifier bridge B2 output ends is connected with one-way SCR V1 output ends；Voltage comparator D4 inputs and one-way SCR V1
Output end is connected, and voltage comparator D4 output ends are connected with control relay K2 control coils.
Second full-wave rectification bridge B2 output ends are connected to filter capacitor C1 with one-way SCR V1 output end tie points.
First transformer input and output turn ratio is 1:4.
Second transformer input and output turn ratio is 1:1.
The utility model beneficial effect：
The utility model is mainly used in alternating current circuit input voltage fluctuation scope in 3VAC ~ 65VAC power-supply system,
Its major function is that the fluctuation voltage of above-mentioned wide scope is nursed one's health, can meet input voltage range for 13VDC ~
The need of work of 65VDC pwm circuit；The utility model input power is inputted using dual transformer, and one group of transformer input is defeated
Go out turn ratio for 1:1, another group of transformer input and output turn ratio is 1:4；Two groups of transformer outputs are all connected to full-wave rectification bridge
Circuit, when input coil voltage is less than 12VAC, the input of subsequent power is provided by the first transformer and its rectifier circuit,
When input coil voltage is more than 13VAC, the input of subsequent power is provided by the second transformer and its rectifier circuit.Utilize this
Utility model circuit can be realized easily when input voltage is too low, boosted using step-up transformer, and when input electricity
Pressure raises can use 1 again after 13VAC:1 input, so as to avoid producing overvoltage in secondary circuit, so as to realize electricity
Source system reliably working in wider input voltage range；Mu balanced circuit or the pwm circuit voltage for solving prior art are defeated
Earth wire of power transmission line coupling power system can not be met by entering scope, the caused earth wire of power transmission line coupling power stability of a system and
The technical problems such as poor reliability.
Brief description of the drawings：
Fig. 1 is the utility model structure diagram.
Embodiment：
A kind of adaptive power input regulation circuit, it includes the first transformer and the second transformer, the first transformer
Input and the second transformer inputs are connected in parallel to power input, the first transformer output end and the first full-wave rectification bridge B1
Input is connected, and the positive pole of the first full-wave rectification bridge B1 output ends is connected with one-way SCR V1 inputs, one-way SCR V1
Resistance R1 is connected between input and control terminal, is connected between being connected between one-way SCR V1 output ends and control terminal
Control relay K2 normally opened contact；Second transformer output end is connected with the second full-wave rectification bridge B2 inputs, the second all-wave
The positive pole of rectifier bridge B2 output ends is connected with one-way SCR V1 output ends；Voltage comparator D4 inputs and one-way SCR V1
Output end is connected, and voltage comparator D4 output ends are connected with control relay K2 control coils.
Second full-wave rectification bridge B2 output ends are connected to filter capacitor C1 with one-way SCR V1 output end tie points.
First transformer input and output turn ratio is 1:4.
Second transformer input and output turn ratio is 1:1.
First transformer is made up of input coil L1, annular core T1, output winding L2.
Second transformer is made up of input coil L4, annular core T2, output winding L3.
The output voltage of first transformer and the second transformer ratio is 1:4 and 1:1, when the voltage of A points is less than direct current 13V
When, circuit provides power supply using the first transformer boost for subsequent conditioning circuit, and when A points voltage is more than 52V, circuit is switched to second
Transformer provides power supply for subsequent conditioning circuit, and now the voltage of A points is 13V, and when A point voltages drop to below 13V, circuit is again automatic
It is switched to the first transformer and provides power supply for subsequent conditioning circuit.Pass through such operation, it is ensured that input voltage for exchange 3V ~
In the range of 65V, always it is more than direct current 13V in the voltage of circuit A points and is less than 65V.
When the input voltage of the second transformer is less than 12VAC, the output that the first transformer passes through the first rectifier bridge B1 is electric
Press the output voltage for passing through the second rectifier bridge B2 for the second transformer 4 times, now one-way SCR V1 is in the conduction state, by
Output inside the one the second rectifier bridge B1, B2 is two diodes, and using the reverse barrier principle of diode, circuit is only
It can be exported from the first rectifier bridge B1, so as to reach the purpose that 4 times of boostings have been carried out to low-voltage.
When the input voltage for inputting the first transformer is more than 13VAC, now the voltage of A points has reached 52VDC, voltage ratio
Output compared with device D4 is overturn, and controllable silicon V1 is disconnected by relay K2, so as to cut off the first rectifier bridge B1 output,
Now A points voltage is then determined by the second rectifier bridge B2 output.So as to input voltage the cutting from high voltage to low-voltage realized
Change.
By one-way SCR V1, the closed loop circuit that resistance R1 is formed realizes one-way SCR V1 leading in system electrification
Logical control.
Claims (4)
1. a kind of adaptive power input regulation circuit, it includes the first transformer and the second transformer, it is characterised in that：The
One transformer inputs and the second transformer inputs are connected in parallel to power input, the first transformer output end and the first all-wave
Rectifier bridge B1 inputs are connected, and the positive pole of the first full-wave rectification bridge B1 output ends is connected with one-way SCR V1 inputs, unidirectionally
Resistance R1 is connected between controllable silicon V1 inputs and control terminal, it is connected between one-way SCR V1 output ends and control terminal
Between be connected with control relay K2 normally opened contact；Second transformer output end is connected with the second full-wave rectification bridge B2 inputs,
The positive pole of second full-wave rectification bridge B2 output ends is connected with one-way SCR V1 output ends；Voltage comparator D4 inputs with it is unidirectional
Controllable silicon V1 output ends are connected, and voltage comparator D4 output ends are connected with control relay K2 control coils.
A kind of 2. adaptive power input regulation circuit according to claim 1, it is characterised in that：Second full-wave rectification
Bridge B2 output ends are connected to filter capacitor C1 with one-way SCR V1 output end tie points.
A kind of 3. adaptive power input regulation circuit according to claim 1, it is characterised in that：First transformer is defeated
Enter to export turn ratio for 1:4.
A kind of 4. adaptive power input regulation circuit according to claim 1, it is characterised in that：Second transformer is defeated
Enter to export turn ratio for 1:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720306135.XU CN206673853U (en) | 2017-03-27 | 2017-03-27 | A kind of adaptive power input regulation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720306135.XU CN206673853U (en) | 2017-03-27 | 2017-03-27 | A kind of adaptive power input regulation circuit |
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| Publication Number | Publication Date |
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| CN206673853U true CN206673853U (en) | 2017-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720306135.XU Active CN206673853U (en) | 2017-03-27 | 2017-03-27 | A kind of adaptive power input regulation circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849712A (en) * | 2017-03-27 | 2017-06-13 | 贵州电网有限责任公司电力科学研究院 | Power input regulation circuit and the adjusting method of a kind of self adaptation |
-
2017
- 2017-03-27 CN CN201720306135.XU patent/CN206673853U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849712A (en) * | 2017-03-27 | 2017-06-13 | 贵州电网有限责任公司电力科学研究院 | Power input regulation circuit and the adjusting method of a kind of self adaptation |
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