CN103675407A - Strut-type current collection device for power transmission lines - Google Patents
Strut-type current collection device for power transmission lines Download PDFInfo
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- CN103675407A CN103675407A CN201310641325.3A CN201310641325A CN103675407A CN 103675407 A CN103675407 A CN 103675407A CN 201310641325 A CN201310641325 A CN 201310641325A CN 103675407 A CN103675407 A CN 103675407A
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- mutual inductor
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- power transmission
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Abstract
The invention provides a strut-type current collection device for power transmission lines, belongs to the technical field of power equipment and solves the technical problems that the extra power, high voltage isolation and the like are needed in the prior art. The strut-type current collection device comprises a housing and a conductive strut penetrating the housing. One end of the conductive strut is fixedly connected with a screw. The other end of the conductive strut is fixedly connected with a nut. Both the screw and the nut are disposed outside the housing. A signal collector, a controller, a wireless signal transmitting module and a power unit are disposed inside the housing. The signal collector is used for collecting changes in current of power transmission lines and outputting digital signals. The controller is used for receiving digital signals output by the signal collector and calculating and outputting the digital signals. The power unit powers an electronic circuit.
Description
Technical field
The invention belongs to electrical equipment technical field, relate to the column support type current collecting device on a kind of electric power transmission line.
Background technology
In power transmission and distribution link, in order to realize automatic management, need to measure the operational factor of power circuit, particularly the measurement of line current.
Its electronic unit of measurement mechanism needs power supply, and at present the measurement mechanism on mesohigh circuit generally adopts the modes such as PT power supply, auxiliary low pressure Power supply, solar powered and optical fiber power supply.First two mode all needs to consider High-Voltage Insulation in device design, so device volume is all larger, and installs inconvenient; The solar powered cost that exists is high, and complicated problem is installed; Optical fiber power supply needs fiber plant, the shorter requirement that cannot meet long-time running of optical device life-span simultaneously.
Along with the development of electronic technology, the working current of a lot of metering circuits only needs several milliamperes, can adopt electric current inductive power supply completely.The occasion that only need to measure electric current at some is used electric current inductive power supply just need not consider voltage insulation problem, has greatly simplified design, reduces device volume.
Summary of the invention
The object of the invention is the problems referred to above that exist for existing technology, column support type on a kind of electric power transmission line current collecting device is provided, its technical matters to be solved is: realize this harvester and be directly connected on power transformer, thereby save mounting bracket.
Object of the present invention can realize by following technical proposal:
Column support type current collecting device on a kind of electric power transmission line, it is characterized in that, this harvester comprises housing, conductive pillar, this conductive pillar is located in housing, one end of this conductive pillar is fixed with screw rod, the other end of this conductive pillar is fixed with nut, described screw rod and nut are all positioned at the outside of housing, in described housing, be provided with signal picker, controller and power supply unit, described signal picker is for gathering curent change the outside output digit signals on target power transmission line of electricity, described controller calculates and outside output current numerical value for receiving the digital signal of signal picker output, described power supply unit is controller power supply.
Its principle is as follows: the signal picker of this harvester is used for gathering current changing signal, the end due to conductive pillar of this harvester has screw rod and nut, screw rod can with transmission line of electricity on cable screw element be fastened, nut can be fastened with the screw element of transformer connecting terminal, electric current directly passes through from conductive pillar, saved existing in ubiquitous mounting bracket, make the connection of this harvester and target part more brief.
In column support type current collecting device on above-mentioned a kind of electric power transmission line, described signal picker comprises sampling mutual inductor and analog to digital converter, described controller comprises single-chip microcomputer and internal storage, and described power supply unit comprises that power taking mutual inductor and power supply arrange unit.Power taking secondary output winding on described power taking mutual inductor arranges the mutually electric connection in unit with described power supply; described power supply arranges unit can carry out rectification, voltage stabilizing and overvoltage protection to the electric current of described power taking secondary output winding output, and described power supply arranges unit the electric current after arranging is flowed to single-chip microcomputer and internal storage.The variation of the electric current of described sampling mutual inductor on can induction power transmission line of electricity is also carried simulating signal to analog to digital conversion circuit, analog to digital conversion circuit is digital signal by analog-signal transitions and sends single-chip microcomputer to, single-chip microcomputer receiving digital signals carries out logical calculated and to internal storage output current numerical value, internal storage received current numerical value also stores.Power taking mutual inductor can connection mutually electric with the transmission line of electricity of free voltage specification; by the curent change on induction transmission line of electricity, on power taking secondary output winding, produce output current; the electric current that power taking secondary output winding produces arranges unit by power supply to carry out after rectification, voltage stabilizing and overvoltage protection; what become can be utilized by electronic components such as single-chip microcomputer and internal storages; thereby realized this harvester and directly from transmission line of electricity, obtained faradic function, saved extra low-voltage dc power supply.The height of the voltage on transmission line of electricity all can not affect the work of harvester, has realized the function of ignoring high-low pressure.
In column support type current collecting device on above-mentioned a kind of electric power transmission line, described harvester also comprises a wireless signal transmitting module, described wireless signal transmitting module arranges the mutually electric connection in unit with power supply and realizes power supply, this wireless signal transmitting module is also connected with single-chip microcomputer, by single-chip microcomputer read internal storage and by the outside wireless transmit of the current values of its storage to remote object.Be designed with after wireless signal transmitting module, can realize long-range control, improve the automaticity of system.
In column support type current collecting device on above-mentioned a kind of electric power transmission line; described power supply arranges unit and comprises overvoltage crowbar, rectification circuit and mu balanced circuit; described overvoltage crowbar carries out overvoltage protection to single-chip microcomputer, internal storage; described rectification circuit carries out rectification to the electric current of power taking secondary output winding output, and described mu balanced circuit carries out voltage stabilizing to the electric current of power taking secondary output winding output.The induction current of exporting on power taking secondary output winding is unstable and changes, must after overcommutation and voltage stabilizing, could be utilized by electronic component.
In column support type current collecting device on above-mentioned a kind of electric power transmission line, between analog-digital conversion circuit as described and single-chip microcomputer, by digital communication interface, connect, described interior magazine is connected by digital communication interface with single-chip microcomputer and wireless signal transmission mould.Interface for digital communication is different with common electric connection, and this interface can transmit the digital signal of more complicated.
In column support type current collecting device on above-mentioned a kind of electric power transmission line, described power taking mutual inductor and sampling mutual inductor are separate, electric power transmission line is through power taking mutual inductor and sampling mutual inductor and as a winding of coil, power taking mutual inductor and sampling mutual inductor separately induction power transmission line of electricity electric current the Secondary Winding output current signal by separately and by the circuit of follow-up connection, utilized, be designed with to be like this beneficial to and keep the job stability of phase connection circuit separately, avoid phase mutual interference.
In column support type current collecting device on above-mentioned a kind of electric power transmission line; in described housing, be also provided with a radome; analog-digital conversion circuit as described, overvoltage crowbar, rectification circuit, mu balanced circuit, interior magazine and single-chip microcomputer are all arranged in radome; described radome is isolated the above-mentioned electronic component of inside and power taking mutual inductor and the mutual inductor of sampling mutually, and described conductive pillar passes from the centre of power taking mutual inductor, sampling mutual inductor and radome.Radome protects inner electronic component not to be subject to the interference of electric current induced field, improves the stability of work; One end of the conductive pillar of this harvester is connected with transformer connecting terminal, the other end is connected with the terminals of transmission line of electricity, in addition there is not any connection with other objects, under this mode, harvester and line voltage distribution are in equipotential state, therefore the electronic component of harvester do not need with transmission line of electricity in high voltage isolate, after having saved high pressure isolation processing, not only reduced volume and weight, reduce costs, the obstacle of simultaneously having avoided insulation to cause, has improved equipment dependability.
In column support type current collecting device on above-mentioned a kind of electric power transmission line, described outside has some annular grooves along conductive pillar axial distribution.Annular groove is designed with and is beneficial to the physical strength that improves equal thickness situation lower house.
Compared with prior art, advantage of the present invention is as follows:
1, the signal picker of this harvester is used for gathering current changing signal, the end due to conductive pillar of this harvester has screw rod and nut, screw rod can with transmission line of electricity on circuit screw element be fastened, nut can be fastened with the screw element of transformer connecting terminal, electric current directly passes through from conductive pillar, saved existing in ubiquitous mounting bracket, make the connection of this harvester and target part more brief.
2, one end of the conductive pillar of this harvester is connected with transformer connecting terminal, the other end is connected with the terminals of transmission line of electricity, in addition there is not any connection with other objects, under this mode, harvester and line voltage distribution are in equipotential state, therefore the electronic component of harvester do not need with transmission line of electricity in high voltage isolate, after having saved high pressure isolation processing, not only reduced volume and weight, reduce costs, the obstacle of simultaneously having avoided insulation to cause, has improved equipment dependability.
Accompanying drawing explanation
Fig. 1 is the circuit schematic flow sheet of this harvester.
Fig. 2 is the structural representation of this harvester.
In figure, 1 housing; 2 conductive pillars; 3 screw rods; 4 nuts; 5 sampling mutual inductors; 6 analog to digital converters; 7 single-chip microcomputers; 8 internal storages; 9 power taking mutual inductors; 10 power supplys arrange unit; 11 power taking secondary output windings; 12 wireless signal transmitting module; 13 overvoltage crowbars; 14 rectification circuits; 15 mu balanced circuits; 16 radomes; 17 annular grooves; 18 sampling secondary output windings.
Embodiment
Be below specific embodiments of the invention by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiment.
As depicted in figs. 1 and 2, this harvester comprises housing 1, conductive pillar 2, this conductive pillar 2 is located in housing 1, one end of this conductive pillar 2 is fixed with screw rod 3, the other end of this conductive pillar 2 is fixed with nut 4, screw rod 3 and nut 4 are all positioned at the outside of housing 1, in housing 1, be provided with signal picker, controller and power supply unit, signal picker is for gathering curent change the outside output digit signals on target power transmission line of electricity, controller calculates and outside output current numerical value for receiving the digital signal of signal picker output, power supply unit is controller power supply.
Signal picker comprises sampling mutual inductor 5 and analog to digital converter 6, controller comprises single-chip microcomputer 7 and internal storage 8, power supply unit comprises that power taking mutual inductor 9 and power supply arrange unit 10, power taking mutual inductor 9 and sampling mutual inductor 5 are separate, power taking secondary output winding 11 on power taking mutual inductor 9 arranges the mutually electric connection in unit 10 with power supply, power supply arranges unit 10 can carry out rectification to the electric current of power taking secondary output winding 11 outputs, voltage stabilizing and overvoltage protection, power supply arranges unit 10 electric current after arranging is flowed to single-chip microcomputer 7 and internal storage 8, the variation of the electric current of sampling mutual inductor 5 on can induction power transmission line of electricity is also carried simulating signal to analog to digital conversion circuit, analog to digital conversion circuit is digital signal by analog-signal transitions and sends single-chip microcomputer 7 to, single-chip microcomputer 7 receiving digital signals carry out logical calculated and to internal storage 8 output current numerical value, internal storage 8 received current numerical value also store.Power taking secondary output winding 11 power taking mutual inductors 9 can connection mutually electric with the transmission line of electricity of free voltage specification; by the curent change on induction transmission line of electricity, on power taking secondary output winding 11, produce output current; the electric current that power taking secondary output winding 11 produces arranges unit 10 by power supply to carry out after rectification, voltage stabilizing and overvoltage protection; what become can be utilized by electronic components such as single-chip microcomputer 7 and internal storages 8; thereby realized this harvester and directly from transmission line of electricity, obtained faradic function, saved extra low-voltage dc power supply.The height of the voltage on transmission line of electricity all can not affect the work of harvester, has realized the function of ignoring high-low pressure.Harvester also comprises a wireless signal transmitting module 12, wireless signal transmitting module 12 arranges the mutually electric connection in unit 10 with power supply and realizes power supply, this wireless signal transmitting module 12 also and single-chip microcomputer 7 be connected, by single-chip microcomputer 7 read internal storage 8 and by the outside wireless transmit of the current values of its storage to remote object.Be designed with after wireless signal transmitting module 12, can realize long-range control, improve the automaticity of system.Power supply arranges unit 10 and comprises overvoltage crowbar 13, rectification circuit 14 and mu balanced circuit 15; 13 pairs of rectification circuits 14 of overvoltage crowbar and mu balanced circuit 15 carry out overvoltage protection; the electric current of 14 pairs of power taking secondary output windings of rectification circuit, 11 outputs carries out rectification, and the electric current of 15 pairs of power taking secondary output windings of mu balanced circuit, 11 outputs carries out voltage stabilizing.On power taking secondary output winding 11, the induction current of output is unstable and changes, and must after overcommutation and voltage stabilizing, could be utilized by electronic component.
In housing 1, be also provided with a radome 16, housing 1 outside has some annular grooves 17 along conductive pillar 2 axial distribution.Annular groove 17 is designed with and is beneficial to the physical strength that improves equal thickness situation lower house 1.Analog to digital conversion circuit 6, overvoltage crowbar 13, rectification circuit 14, mu balanced circuit 15, interior magazine 8 and single-chip microcomputer 7 are all arranged in radome 16; radome 16 is isolated the above-mentioned electronic component of inside and power taking mutual inductor 9 and the mutual inductor 5 of sampling mutually, and conductive pillar 2 passes from the centre of power taking mutual inductor 9, sampling mutual inductor 5 and radome 16.The inner electronic component of radome 16 protection is not subject to the interference of electric current induced field, improves the stability of work; One end of the conductive pillar 2 of this harvester is connected with transformer connecting terminal, the other end is connected with the terminals of transmission line of electricity, in addition there is not any connection with other objects, under this mode, harvester and line voltage distribution are in equipotential state, therefore the electronic component of harvester do not need with transmission line of electricity in high voltage isolate, after having saved high pressure isolation processing, not only reduced volume and weight, reduce costs, the obstacle of simultaneously having avoided insulation to cause, has improved equipment dependability.
Described power taking mutual inductor 9 and sampling mutual inductor 5 are separate, electric power transmission line is through power taking mutual inductor 9 and sampling mutual inductor 5 and as a winding of coil, power taking mutual inductor 9 and sampling mutual inductor 5 separately induction power transmission line of electricity electric current the Secondary Winding output current signal by separately and by the circuit of follow-up connection, utilized, be designed with to be like this beneficial to and keep the job stability of phase connection circuit separately, avoid phase mutual interference.Sampling mutual inductor 5 has sampling secondary output winding 18.
Between analog to digital conversion circuit 6 and single-chip microcomputer 7, by digital communication interface, connect, interior magazine 8 is connected by digital communication interface with single-chip microcomputer 7 and wireless signal transmission mould.Interface for digital communication is different with common electric connection, and this interface can transmit the digital signal of more complicated.
The signal picker of this harvester is used for gathering current changing signal, the end due to conductive pillar 2 of this harvester has screw rod 3 and nut 4, screw rod 3 can with transmission line of electricity on cable screw element be fastened, nut 4 can be fastened with the screw element of transformer connecting terminal, electric current directly passes through from conductive pillar 2, saved existing in ubiquitous mounting bracket, make the connection of this harvester and target part more brief.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various modifications or supplement or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Claims (8)
1. the column support type current collecting device on an electric power transmission line, it is characterized in that, this harvester comprises housing (1), conductive pillar (2), this conductive pillar (2) is located in housing (1), one end of this conductive pillar (2) is fixed with screw rod (3), the other end of this conductive pillar (2) is fixed with nut (4), described screw rod (3) and nut (4) are all positioned at the outside of housing (1), described housing is provided with signal picker in (1), controller, wireless signal transmitting module (12) and power supply unit, described signal picker is for gathering curent change the outside output digit signals on target power transmission line of electricity, described controller calculates and outside output current numerical value for receiving the digital signal of signal picker output, described power supply unit is signal picker, controller and wireless signal transmitting module (12) power supply.
2. the column support type current collecting device on a kind of electric power transmission line according to claim 1, it is characterized in that, described signal picker comprises sampling mutual inductor (5) and analog to digital converter (6), described controller comprises single-chip microcomputer (7) and internal storage (8), described power supply unit comprises that power taking mutual inductor (9) and power supply arrange unit (10), described power taking mutual inductor (9) and sampling mutual inductor (5) are separate, power taking secondary output winding (11) on described power taking mutual inductor (9) arranges the mutually electric connection in unit (10) with described power supply, described power supply arranges unit (10) can carry out rectification to the electric current of described power taking secondary output winding (11) output, voltage stabilizing and overvoltage protection, described power supply arranges unit (10) electric current after arranging is flowed to single-chip microcomputer (7) and internal storage (8), the variation of the electric current of described sampling mutual inductor (5) on can induction power transmission line of electricity is also carried simulating signal to analog to digital conversion circuit, analog to digital conversion circuit is digital signal by analog-signal transitions and sends single-chip microcomputer (7) to, single-chip microcomputer (7) receiving digital signals carries out logical calculated and to internal storage (8) output current numerical value, internal storage (8) received current numerical value also stores.
3. the column support type current collecting device on a kind of electric power transmission line according to claim 2, it is characterized in that, described wireless signal transmitting module (12) arranges the mutually electric connection in unit (10) with power supply and realizes power supply, this wireless signal transmitting module (12) also and single-chip microcomputer (7) be connected, by single-chip microcomputer (7) read internal storage 8 and by the outside wireless transmit of the current values of its storage to remote object.
4. according to the column support type current collecting device on a kind of electric power transmission line described in claim 2 or 3; it is characterized in that; described power supply arranges unit (10) and comprises overvoltage crowbar (13), rectification circuit (14) and mu balanced circuit (15); described overvoltage crowbar (13) carries out overvoltage protection to rectification circuit (14) and mu balanced circuit (15); described rectification circuit (14) carries out rectification to the electric current of power taking secondary output winding (11) output, and described mu balanced circuit (15) carries out voltage stabilizing to the electric current of power taking secondary output winding (11) output.
5. the column support type current collecting device on a kind of electric power transmission line according to claim 4, it is characterized in that, between analog-digital conversion circuit as described (6) and single-chip microcomputer (7), by digital communication interface, connect, described interior magazine (8) is connected by digital communication interface with single-chip microcomputer (7) and wireless signal transmission mould.
6. the column support type current collecting device on a kind of electric power transmission line according to claim 4, it is characterized in that, described power taking mutual inductor (9) and sampling mutual inductor (5) are separate, electric power transmission line is through power taking mutual inductor (9) and the mutual inductor (5) as a winding of coil of sampling, sampling mutual inductor (5) has the secondary of sampling output winding (18), and power taking mutual inductor (9) and sampling mutual inductor (5) the separately electric current of induction power transmission line of electricity are also exported winding output current signal by secondary separately.
7. the column support type current collecting device on a kind of electric power transmission line according to claim 4, it is characterized in that, in described housing (1), be also provided with a radome (16), analog-digital conversion circuit as described, overvoltage crowbar (13), rectification circuit (14), mu balanced circuit (15), interior magazine and single-chip microcomputer (7) are all arranged in radome (16), described radome (16) is isolated the above-mentioned electronic component of inside and power taking mutual inductor (9) and the mutual inductor (5) of sampling mutually, described conductive pillar (2) is from power taking mutual inductor (9), the centre of sampling mutual inductor (5) and radome (16) is passed.
8. according to the column support type current collecting device on a kind of electric power transmission line described in claim 1 or 2 or 3, it is characterized in that, described housing (1) outside has some annular grooves (17) along conductive pillar (2) axial distribution.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310641325.3A CN103675407A (en) | 2013-12-03 | 2013-12-03 | Strut-type current collection device for power transmission lines |
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| CN201310641325.3A CN103675407A (en) | 2013-12-03 | 2013-12-03 | Strut-type current collection device for power transmission lines |
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| CN201310641325.3A Pending CN103675407A (en) | 2013-12-03 | 2013-12-03 | Strut-type current collection device for power transmission lines |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105193541A (en) * | 2015-10-19 | 2015-12-30 | 国家电网公司 | Multifunctional live-working goggles |
| CN106572863A (en) * | 2014-04-29 | 2017-04-19 | 米松尼克斯股份有限公司 | Ultrasonic surgical instrument assembly, related accessory, and associated surgical method |
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