CN105866522B - Open-type holography high-voltage wireless current transformer - Google Patents
Open-type holography high-voltage wireless current transformer Download PDFInfo
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- CN105866522B CN105866522B CN201610369384.3A CN201610369384A CN105866522B CN 105866522 B CN105866522 B CN 105866522B CN 201610369384 A CN201610369384 A CN 201610369384A CN 105866522 B CN105866522 B CN 105866522B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/16—Spectrum analysis; Fourier analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R25/00—Arrangements for measuring phase angle between a voltage and a current or between voltages or currents
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The present invention relates to a kind of open-type holography high-voltage wireless current transformers comprising：Information generating circuit, for generating induction information；And receiving converter, the induction information for handling information generating circuit generation, and be processed to, export.Open-type holography high-voltage wireless current transformer provided by the invention, it can be in the case of not applied voltage mutual inductor, while detection is tested high voltage transmission line size of current, easily detection electric current and voltage phase angle, current harmonics and line temperature, keep the regulation and control of high voltage transmission line more acurrate, post-processing is more efficient, conveniently.
Description
Technical field
The present invention relates to basic electronic circuit fields, and in particular to a kind of to identify size of current, electric current and voltage phase angle
（Not applied voltage mutual inductor）, current harmonics, line temperature etc. open-type holography high-voltage wireless current transformer.
Background technology
Currently, shared detection ultra-high-tension power transmission line current transformer is that primary side high current is converted into the small electricity of secondary side
Stream measures, and can only detect general size of current parameter, does not have identification electric current and voltage phase angle（In not applied voltage
In the case of mutual inductor）, current harmonics, the functions such as line temperature.But electric current and voltage phase angle, current harmonics, line temperature
Etc. parameters play an important role to the regulation and control of high voltage transmission line, be important referential data, general current transformer due to detection join
Several missings causes difficulty to follow-up regulation and control, be easy to cause error handle.
Invention content
In order to solve the problems existing in the prior art, size of current can not only be detected by providing one kind, while can also detect electric current
With voltage phase angle（Not applied voltage mutual inductor）, the parameters such as current harmonics and line temperature current transformer, the present invention carries
For a kind of open-type holography high-voltage wireless current transformer comprising：Information generating circuit, for generating induction information；And
Receiving converter, the induction information for handling information generating circuit generation, and be processed to, export；
Wherein, described information generation circuit includes：
Transformer iron core, for wrapping high voltage transmission line, to generate mutual inductance signal；
Current transformer is connect with transformer iron core, for generating current measurement signal；
Resistance is connect with current transformer, and voltage is measured for generating；
Comparator is connect with resistance, for generating square wave；
Microcontroller is connect with comparator and resistance, the signal transmitted for receiving resistance and comparator, and analyzes electricity
Stream and voltage phase angle and current harmonics；
Temperature sensor is connect with high voltage transmission line and microcontroller, to incude the temperature of high voltage transmission line, and is transmitted
To microcontroller.
Wherein, aforementioned information generation circuit further includes wireless transmitter module, is connect with the microcontroller, single for that will receive
Piece machine receives and modulation current measurement signal, electric current and the voltage phase angle of analysis, current harmonics and line temperature wireless transmission
To receiving converter.
Wherein, it is also associated with amplifier between aforementioned resistance and microcontroller, for being put to ohmically voltage signal
Greatly.
Wherein, aforementioned information generation circuit further includes rectifier bridge, is connect with the transformer iron core, for being generated for information
Circuit provides operating voltage.
Wherein, aforementioned rectifier bridge is by protection diode and capacitance connection, meanwhile, the rectifier bridge by electronic switch with
And oscillator is connect with voltage-stablizer.
Wherein, aforementioned receiving converter includes：
Wireless receiving module, modulation current measurement signal, electric current and voltage phase for receiving wireless transmitter module transmission
Angle, current harmonics and line temperature, and it is demodulated into digit pulse, wherein modulation current measurement signal is demodulated into electric current letter
Number；
Photoelectrical coupler is connect with transformer, generates voltage square wave signal；
Microcontroller is decoded, is connect with wireless receiving module and photoelectrical coupler, the electricity for being demodulated to wireless receiving module
The signals such as stream are decoded；
Controllable sine-wave generator is connect with decoding microcontroller；
Digital regulation resistance is connect with controllable sine-wave generator；
Power amplifier is connect with digital regulation resistance；
Coupled capacitor is connect with power amplifier；
Transformer is exported, is connect with coupled capacitor；
Current transformer is connect with output transformer and decoding microcontroller, to form closed loop adjusting.
Wherein, aforementioned decoding microcontroller is connected with output port simultaneously, can be with output current signal, electric current and voltage phase
Angle, current harmonics and line temperature.
Open-type holography high-voltage wireless current transformer provided by the invention, can be the not applied voltage mutual inductor the case where
Under, while detection is tested high voltage transmission line size of current, easily detect electric current and voltage phase angle, current harmonics and line
Road temperature keeps the regulation and control of high voltage transmission line more acurrate, and post-processing is more efficient, conveniently.
Description of the drawings
Fig. 1：The overall appearance figure of the information generating circuit of the present invention；
Fig. 2：The installation fitting figure of Fig. 1；
Fig. 3：The electronic-circuit diagram of the information generating circuit of the present invention；
Fig. 4：The electronic-circuit diagram of the receiving converter of the present invention.
Reference sign
Openable iron core on 1
2 times secured cores
3 iron core fixing bolts
4 securing bracket screws
5 equipotential lines
6 electronic control parts
7 antennas
8 indicator lights
9 left socle fixing bolts
10 right support fixing bolts
11 fastening semi-rings
12 times fixing brackets
13 high voltage transmission lines
14 transformer iron cores
15 current transformers
16 rectifier bridges
17 resistance
18 amplifiers
19 comparators
20 microcontrollers
21 wireless transmitter modules
22 protection diodes
23 electronic switches
24 capacitances
25 oscillators
26 temperature sensors
27 voltage-stablizers
28 wireless receiving modules
29 transformers
30 photoelectrical couplers
31 decoding microcontrollers
32 controllable sine-wave generators
33 digital regulation resistances
34 power amplifiers
35 coupled capacitors
36 output transformers
37 current transformers
38 output ports.
Specific implementation mode
In order to have further understanding to technical scheme of the present invention and advantageous effect, attached drawing is coordinated to be described in detail below
Technical scheme of the present invention and its advantageous effect of generation.
Fig. 1 is the overall appearance figure of the information generating circuit of the present invention, and Fig. 2 is the installation fitting figure of Fig. 1, such as Fig. 1 and Fig. 2
Shown, the present invention provides a kind of open-type holography high-voltage wireless current transformers comprising information generating circuit, described information
Generation circuit includes electronic control part 6, upper openable iron core 1 and lower secured core 2, the upper openable iron core 1
It is connected and fixed by iron core fixing bolt 3 with lower secured core 2, the electronic control part 6 passes through equipotential line 5 and fastening
Rack screw 4 connects, and the electronic control part 6 is connected with antenna 7 and indicator light 8 simultaneously, and the securing bracket screw 4 is under
Fixing bracket 12 connects, and the lower fixing bracket 12 passes through left socle fixing bolt 9 and right support fixing bolt 10 and fastening half
Ring 11 connects.
Fig. 3 be the present invention information generating circuit electronic circuitry namely the electronic control part 6 in Fig. 1 it is specific
Circuit structure diagram, as shown in figure 3, the present invention provides a kind of open-type holography high-voltage wireless current transformers comprising：Letter
Generation circuit is ceased, for generating induction information；And receiving converter, the induction letter for handling information generating circuit generation
Breath, and be processed to, export；
Specifically, described information generation circuit includes：
Transformer iron core 14, for wrapping high voltage transmission line 13, to generate mutual inductance signal；
Current transformer 15 is connect with transformer iron core 14, for generating current measurement signal；
Resistance 17 is connect with current transformer 15, measures voltage for generating, the electric current of the high voltage transmission line 13 is two
Secondary side induced current is generated on resistance 17 by current transformer 15 and measures voltage；
Comparator 19 is connect with resistance 17, for generating square wave, to facilitate microcontroller 20 to analyze electric current and voltage phase angle；
Microcontroller 20 is connect with comparator 19 and resistance 17, the signal transmitted for receiving resistance 17 and comparator 19,
And analyze and calculate electric current and voltage phase angle and current harmonics, preferably, it is also connected between the resistance 17 and microcontroller 20
There is amplifier 18, the voltage signal for being generated to resistance 17 is amplified；
Temperature sensor 26 is connect with high voltage transmission line 13 and microcontroller 20, to incude the temperature of high voltage transmission line 13, and
Pass it to microcontroller 20；
Wireless transmitter module 21 is connect with the microcontroller 20, is received, analyzes and is calculated for that will receive microcontroller 20
Modulation current measurement signal, electric current and voltage phase angle, current harmonics and line temperature be wirelessly sent to receiving converter, have
Body, the information received is sent to receiving converter by the wireless transmitter module 21 by data mode.
When it is implemented, information generating circuit further includes rectifier bridge 16, the rectifier bridge 16 and the transformer iron core 14
Connection, secondary current generate the operating voltage of information generating circuit by rectifier bridge 16, that is, are it during microcontroller 20 works
Power supply is provided.
The rectifier bridge 16 is connect by protection diode 22 with capacitance 24 simultaneously, and by electronic switch 23 and is shaken
It swings device 25 to connect with voltage-stablizer 27, the operating voltage that rectifier bridge 16 generates usually is storable in capacitance 24, and microcontroller 20 works
Period, rectifier bridge 16 are powered by 23 short circuit of electronic switch by capacitance 24, and the measurement of current transformer 15 can be improved in this structure setting
Precision；Preferably, the oscillator 25 may be configured as the low-power consumption " from the formula of race "（Microampere order）Oscillator, oscillator 25 are used for controlling
Work rhythm, meanwhile, control the operation of voltage-stablizer 27.
In the present invention, microcontroller 20 is analyzed by 12 A/D quick samplings and through Fourier space to generate current harmonics.
Fig. 4 is the electronic-circuit diagram of the receiving converter of the present invention, as shown in figure 4, the receiving converter of the present invention includes：
Wireless receiving module 28, modulation current measurement signal, electric current and voltage for receiving wireless transmitter module transmission
Phase angle, current harmonics and line temperature, and it is demodulated into digit pulse, wherein modulation current measurement signal is demodulated into electric current
Signal；
Photoelectrical coupler 30 is connect with transformer 29, for exporting square wave, wherein the transformer 29 is subsequent solution
Code microcontroller 31 and entire receiving converter provide power supply；
Microcontroller 31 is decoded, is connect with wireless receiving module 28 and photoelectrical coupler 30, for wireless receiving module 28
The square wave of current signal and photoelectrical coupler 30 output of transmission is decoded, and the decoder object of decoding microcontroller 31 is divided into two
Kind：One kind is size of current, and one kind is and photoelectrical coupler 30（Input comes from supply voltage）The phase that the square wave of output is formed
Number value, is used for locking the phase angle of controllable sine-wave generator 32；
Controllable sine-wave generator 32 is connect with decoding microcontroller 31；
Digital regulation resistance 33 is connect with controllable sine-wave generator 32；
Power amplifier 34 is connect with digital regulation resistance 33；
Coupled capacitor 35 is connect with power amplifier 34；
Transformer 36 is exported, is connect with coupled capacitor 35；
Current transformer 37 is connect with output transformer 36 and decoding microcontroller 31, to form closed loop adjusting.
In the present invention, the decoding microcontroller 31 simultaneously connect an output port 38, can with output current signal, electric current with
Voltage phase angle, current harmonics and line temperature.
In the present invention, there are two types of the external way of outputs for the 31 decoded parameter of decoding microcontroller：First way is
The analog output of 0-5A, flow are the input terminal that the output end through controllable sine-wave generator 32 enters digital regulation resistance 33,
Meanwhile the size for decoding the adjusting current value of microcontroller 31 is directly entered the input terminal of digital regulation resistance 33, digital regulation resistance 33
Output end is connect with the input terminal of power amplifier 34, and the coupled capacitance 35 of signal of the output of power amplifier 34 and output become
Depressor 36 generates the output current of ac 0-5A, and it is single that decoding is fed back to after the rectified filtering of low current that current transformer 37 generates
Piece machine 31 carries out A/D conversions, is adjusted to form closed loop, ensures the precision of output current；The second way is through output port
38 output current signals, electric current and voltage phase angle, current harmonics and line temperature.
When practical operation, the output port 38 can be set as RS-232 output ports.
To sum up, open-type holography high-voltage wireless current transformer provided by the invention can be mutual in not applied voltage for invention
In the case of sensor, while detection is tested high voltage transmission line size of current, electric current and voltage phase angle, electric current are easily detected
Harmonic wave and line temperature keep the regulation and control of high voltage transmission line more acurrate, and post-processing is more efficient, conveniently.
Although the present invention is illustrated using above-mentioned preferred embodiment, the protection model that however, it is not to limit the invention
It encloses, any those skilled in the art are not departing within the spirit and scope of the present invention, and opposite above-described embodiment carries out various changes
It is dynamic still to belong to the range that the present invention is protected with modification, therefore protection scope of the present invention is subject to what claims were defined.
Claims (5)
1. a kind of open-type holography high-voltage wireless current transformer, which is characterized in that including：Information generating circuit, for generating
Induction information；And receiving converter, the induction information for handling information generating circuit generation, and be processed to, export；
Wherein, described information generation circuit includes：
Transformer iron core, for wrapping high voltage transmission line, to generate mutual inductance signal；
First current transformer, connect with transformer iron core, for generating current measurement signal；
Resistance is connect with the first current transformer, and voltage is measured for generating；
Comparator is connect with resistance, for generating square wave；
First singlechip is connect with comparator and resistance, the signal transmitted for receiving resistance and comparator, and analyzes electricity
Stream and voltage phase angle and current harmonics；
Temperature sensor is connect with high voltage transmission line and first singlechip, to incude the temperature of high voltage transmission line, and is transmitted
To first singlechip；
The receiving converter includes：
Wireless receiving module, modulation current measurement signal, electric current and voltage phase angle, electricity for receiving wireless transmitter module transmission
Harmonic wave and line temperature are flowed, and is demodulated into digit pulse, wherein modulation current measurement signal is demodulated into current signal；
Photoelectrical coupler is connect with transformer, generates voltage square wave signal；
Microcontroller is decoded, is connect with wireless receiving module and photoelectrical coupler, the electric current for being demodulated to wireless receiving module is believed
It number is decoded；
Controllable sine-wave generator is connect with decoding microcontroller；
Digital regulation resistance is connect with controllable sine-wave generator；
Power amplifier is connect with digital regulation resistance；
Coupled capacitor is connect with power amplifier；
Transformer is exported, is connect with coupled capacitor；
Second current transformer is connect with output transformer and decoding microcontroller, to form closed loop adjusting；
The open-type holography high-voltage wireless current transformer further includes wireless transmitter module, is connect with the first singlechip,
Modulation current measurement signal, electric current and voltage phase angle, current harmonics and circuit for receiving and analyzing first singlechip
Temperature wireless is sent to receiving converter.
2. open-type holography high-voltage wireless current transformer as described in claim 1, it is characterised in that：The resistance and first
Amplifier is also associated between microcontroller, for being amplified to ohmically voltage signal.
3. open-type holography high-voltage wireless current transformer as described in claim 1, it is characterised in that：Further include rectifier bridge,
It is connect with the transformer iron core, for providing operating voltage for information generating circuit.
4. open-type holography high-voltage wireless current transformer as claimed in claim 3, it is characterised in that：The rectifier bridge passes through
Protection diode and capacitance connection, meanwhile, the rectifier bridge is connect by electronic switch and oscillator with voltage-stablizer.
5. open-type holography high-voltage wireless current transformer as described in claim 1, it is characterised in that：The decoding microcontroller
It is connected with output port simultaneously, it being capable of output current signal, electric current and voltage phase angle, current harmonics and line temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610369384.3A CN105866522B (en) | 2016-05-30 | 2016-05-30 | Open-type holography high-voltage wireless current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610369384.3A CN105866522B (en) | 2016-05-30 | 2016-05-30 | Open-type holography high-voltage wireless current transformer |
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| Publication Number | Publication Date |
|---|---|
| CN105866522A CN105866522A (en) | 2016-08-17 |
| CN105866522B true CN105866522B (en) | 2018-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610369384.3A Active CN105866522B (en) | 2016-05-30 | 2016-05-30 | Open-type holography high-voltage wireless current transformer |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108896815B (en) * | 2018-06-29 | 2020-09-08 | 合容电气股份有限公司 | Open-type wireless current transformer converter and signal conversion method |
| CN108680781A (en) * | 2018-07-09 | 2018-10-19 | 广东电网有限责任公司 | Current transformer and split-core type meter |
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| US8076923B2 (en) * | 2008-05-23 | 2011-12-13 | Consolidated Edison Company Of New York, Inc. | Dead-line phase identification system and method thereof |
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|---|---|---|---|---|
| CN2478115Y (en) * | 2001-04-12 | 2002-02-20 | 范振亭 | Self-feeding far infrared and radio current sensor |
| CN201364814Y (en) * | 2008-11-28 | 2009-12-16 | 北京新源绿网节能科技有限公司 | Passive high-voltage wireless current transformer |
| CN202631609U (en) * | 2012-05-17 | 2012-12-26 | 国网电力科学研究院 | Fully-open type sensing device and fuse |
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| CN105866522A (en) | 2016-08-17 |
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