CN106160182A - A kind of be applicable to taking of overhead type indicating fault location terminal can circuit - Google Patents
A kind of be applicable to taking of overhead type indicating fault location terminal can circuit Download PDFInfo
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- CN106160182A CN106160182A CN201610547587.7A CN201610547587A CN106160182A CN 106160182 A CN106160182 A CN 106160182A CN 201610547587 A CN201610547587 A CN 201610547587A CN 106160182 A CN106160182 A CN 106160182A
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- Prior art keywords
- power
- circuit
- outfan
- input
- ldo
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/02—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which an auxiliary distribution system and its associated lamps are brought into service
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/50—Energy storage in industry with an added climate change mitigation effect
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a kind of be applicable to overhead type indicating fault location terminal take can circuit, including solar energy power-supply circuit, CT power-supply circuit, LDO, battery, analog switch and power monitoring chip；The outfan of solar energy power-supply circuit is connected with the input of LDO by the first low pressure drop diode, the outfan of CT power-supply circuit is connected with the input of LDO by the second low pressure drop diode, the outfan of LDO is connected with analog switch input, the outfan of battery is connected with another input of analog switch, the output of analog switch is as the working power of overhead type indicating fault location terminal, the input of power monitoring chip is connected with the outfan of LDO, and the outfan of power monitoring chip is connected with the control input of analog switch.The present invention utilizes CT power taking, solar energy power taking simultaneously, and power three kinds of mutual supplement with each other's advantages method of supplying power to of battery organically combine, it is ensured that terminal power supply reliability under various environmental conditions.
Description
Technical field
The present invention relates to a kind of be applicable to overhead type indicating fault location terminal take can circuit, distribution network automated technology
Field.
Background technology
Overhead type indicating fault location terminal is that one is arranged on overhead distribution, for detection and locating rack ceases to be busy
Road ground connection and the device of short circuit trouble point.After line failure, line walking staff sends according to indicating fault location terminal
Alarm indicator information, determine rapidly fault section and find trouble point, have communication function indicating fault location terminal also
The place that the running status of detection circuit that can be real-time and fault occur, and fault message is sent in power distribution network operational management
The heart, operations staff handles it the most timely and effectively, substantially increases the satisfaction of power supply reliability and user.
Along with the progress of technology, overhead type indicating fault location terminal from initial can only judge on the spot short with circuit
The simulated failure indicator of road fault, has had evolved to have remote signalling, " three is distant " type digitized intelligence of remote measurement and remote regulating function
Can position terminal by fault detector, its function is more and more perfect, monitors in real time including line current, line electricity field measurement, line
Road temperature survey, remote parameter configures, and ground connection and short trouble judge and information remote transmitting etc..Increasing function also results in end
The increase of the power consumption of end.In order to tackle this problem, on the one hand all big enterprises reduce the power consumption of terminal by software and hardware technology, another
Aspect seeks convenient and reliable electricity-fetching method.
Overhead distribution is provided with special overhead type indicating fault location terminal at present, for coordinating this kind of system
Insulation characterisitic, terminal is not electrically connected with system equipment, is attached without optical fiber, but uses wireless communication technology transmission
Operation information, this kind of system cannot provide continual mains supply.Using the power supply of traditional indicating fault location terminal more
Non-rechargeabel lithium battery is as the energy source of terminal, and once electric quantity of lithium battery exhausts or because environmental factors is damaged, then terminal
Life cycle i.e. terminate.Along with the function of fault location terminal is more and more perfect, power consumption is more and more higher, and reliability requirement is also
More and more higher.Stability and the reliability of power supply are more and more important.Some producer is by the card line in indicating fault location terminal
Increase by one group in structure and take energy coil, by the part electric energy supply in Electromagnetically induced absorption circuit self in running
Circuits System consumes, and this method causes the increase of terminal volume, weight and cost.Utilizing increases on card wire structure that take can be around
Group also has, from the method for overhead transmission line power taking, the defect affected by line load, when line load is too low, owing to CT senses
Voltage inadequate, take and can cannot start in loop, when line load is excessive, secondary side inductive energy is excessive, may damage that take can electricity
Road.Owing to taking the shunting action of energy winding, take the precision that also can affect current measurement to a certain extent.Ye You producer uses
Solar energy way to take power is powered for built on stilts indicating fault location terminal, solar energy power-supply circuit have employed special take can chip,
Relatively costly.The method of solar energy power taking is affected relatively big by weather, run into continuous print rainy weather then solar energy power taking loop without
Method works.In order to ensure that overhead type indicating fault positions terminal steady operation reliably and with long-term, need a kind of reliable, convenient, by ring
Taking that border impact is little can circuit.
Summary of the invention
In order to solve above-mentioned technical problem, the invention provides a kind of overhead type indicating fault that is applicable to and position taking of terminal
Can circuit.
In order to achieve the above object, the technical solution adopted in the present invention is:
A kind of be applicable to overhead type indicating fault location terminal take can circuit, including solar energy power-supply circuit, CT power-supply circuit,
LDO, battery, analog switch and power monitoring chip；
The outfan of described solar energy power-supply circuit is connected with the input of LDO by the first low pressure drop diode, and described CT takes
The outfan of electricity circuit is connected with the input of LDO by the second low pressure drop diode, the outfan of described LDO and analog switch
Input connect, the outfan of described battery is connected with another input of analog switch, described analog switch
Export the working power as overhead type indicating fault location terminal, the input of described power monitoring chip and the output of LDO
End connects, and the outfan of described power monitoring chip is connected with the control input of analog switch.
Described CT power-supply circuit includes that the power taking CT, control switching circuit, current rectifying and wave filtering circuit and the voltage stabilizing that are sequentially connected with are anti-
Protection circuit.
Described power taking CT positions the measurement same winding of CT time-sharing multiplex of terminal with overhead type indicating fault.
Described solar energy power-supply circuit includes solar panel, the 3rd low pressure drop diode, super capacitor and liter piezoelectricity
Road；
Described solar panel, the 3rd low pressure drop diode and booster circuit are sequentially connected with, one end of described super capacitor with
The outfan of the 3rd low pressure drop diode connects, the other end ground connection of described super capacitor.
The beneficial effect that the present invention is reached: 1, the present invention utilizes CT power taking, solar energy power taking simultaneously, battery powers three kinds
Mutual supplement with each other's advantages method of supplying power to organically combines, it is ensured that terminal power supply reliability under various environmental conditions；2, solar energy power-supply circuit
Simple in construction, little from power consumption, super capacitor is directly charged by solar panels by the 3rd low pressure drop diode, and charging rate is fast,
Solar energy power taking efficiency is high；3, power taking CT and the measurement same winding of CT time-sharing multiplex, can reduce volume, simplify structure, fall
Low cost, is avoided that certainty of measurement is brought impact by power taking simultaneously；4, according to a payload, control power taking and sampling point
Shi Fuyong dutycycle a, it is ensured that during Smaller load, power-supply circuit can get enough energy, take during the biggest load can circuit not by
Excessive power is damaged；5, CT power taking combines as main power source with solar energy power taking, and battery, can be to greatest extent as stand-by power supply
Ground reduce environment on take can impact, reduce battery power consumption, extend product service life；6, three kinds of power supplys are controlled without CPU
System is capable of automatic seamless switching, it is ensured that indicating fault location terminal runs without interruption for a long time.
Accompanying drawing explanation
Fig. 1 is the circuit block diagram of the present invention.
Fig. 2 is the physical circuit figure of CT power-supply circuit.
Fig. 3 is the physical circuit figure of solar energy power-supply circuit.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings.Following example are only used for clearly illustrating the present invention
Technical scheme, and can not limit the scope of the invention with this.
As it is shown in figure 1, a kind of be applicable to overhead type indicating fault location terminal take can circuit, including solar energy power taking electricity
Road, CT power-supply circuit, LDO, battery, analog switch and power monitoring chip.
The outfan of solar energy power-supply circuit is connected by the input of the first low pressure drop diode D6 with LDO, CT power taking
The outfan of circuit is connected by the input of the second low pressure drop diode D4 with LDO, the outfan of LDO and the one of analog switch
Individual input connects, and the outfan of battery is connected with another input of analog switch, and the output of analog switch is as built on stilts
The working power of type indicating fault location terminal, the input of power monitoring chip is connected with the outfan of LDO, power monitoring core
The outfan of sheet is connected with the control input of analog switch.
CT power-supply circuit includes power taking CT, control switching circuit, current rectifying and wave filtering circuit and the voltage stabilizing protection electricity being sequentially connected with
Road.Physical circuit is as in figure 2 it is shown, CT in power taking CT(i.e. figure) two ends be connected to varistor S1 and high frequency differential mode electric capacity C1,
Varistor S1 and high frequency differential mode electric capacity C1 absorbs surge current and High-frequency Interference, protects as the first order, prevents through the first order
An ac input end of full-wave rectification bridge D1 is accessed in the power taking CT one end protected, and accesses after the other end one sampling resistor R1 of series connection
Another ac input end of full-wave rectification bridge D1, two ac input ends of full-wave rectification bridge D1 respectively by two metal-oxide-semiconductor Q2,
Q3(uses high-current low-voltage fall N-channel MOS pipe) ground connection, produce control signal, switching power taking and sampling timesharing by CPU and enter
OK；I.e. when control signal SWAP is high level, two metal-oxide-semiconductors are both turned on, by full-wave rectification bridge D1 short circuit, now power-supply circuit
Do not work, one end ground connection of sampling resistor R1, power taking CT secondary current completely by sampling resistor R1, non-at sampling resistor R1
Earth terminal produces a sinusoidal AC voltage signal I_mesure, as the sampled signal of electric current；When control signal SWAP is low
During level, two metal-oxide-semiconductor cut-offs, power taking CT electric current is converted into the DC voltage of change through full-wave rectification bridge D1, through filtering
Wave circuit is converted to relatively galvanic current pressure.Filter circuit is made up of inductance L1, electric capacity C2 and electric capacity C3.At full-wave rectification bridge
Add protection TVS pipe D2 in the second level between D1 and filter circuit, play restriction surge voltage, the effect of protection late-class circuit.Whole
The DC voltage input voltage stabilizing protection circuit of stream filter circuit output, protects as the third level.Voltage stabilizing protection circuit is by passive device
Part is constituted, and constitutes including current-limiting resistance R2, stabilivolt D3 and triode Q1, and current-limiting resistance R2 flows through triode Q1's for control
Base current, according to the Current amplifier characteristic of triode Q1, controls to flow through the electric current of triode Q1 colelctor electrode, and stabilivolt D3 is used for
Rectified DC voltage amplitude being limited in allowed limits, CT power-supply circuit exports a range of DC voltage Vct.
Above-mentioned power taking CT and the measurement same winding of CT time-sharing multiplex of overhead type indicating fault location terminal, can reduce
Volume, simplifies structure, reduces cost, by selecting suitable umber of turn, is meeting the precision of current measurement and the linearity
Under the conditions of, by increasing the number of turn, thus increase secondary output voltage, reduce the one-shot electric current required for power-supply circuit, protect
Take and can also can work by circuit during Smaller load electric current of card, produce control signal by CPU, control the break-make of two metal-oxide-semiconductors, cut
Exchange electricity for and sampling timesharing is carried out, not power taking during measurement, it is ensured that certainty of measurement can not be affected by taking；When a load is excessive
Time, the dutycycle that can be switched by control, is reduced the power taking accounting time, thus protects power-supply circuit not damaged by too much energy
Bad.
Solar energy power-supply circuit includes solar panel, the 3rd low pressure drop diode D5, super capacitor SCAP1 and boosting
Circuit；Solar panel, the 3rd low pressure drop diode D5 and booster circuit are sequentially connected with, one end of super capacitor SCAP1 with
The outfan of the 3rd low pressure drop diode D5 connects, the other end ground connection of super capacitor SCAP1.The letter of solar energy power-supply circuit structure
Single, little from power consumption, super capacitor SCAP1 is directly charged by solar panels by the 3rd low pressure drop diode D5, and charging rate is fast,
Solar energy power taking efficiency is high.Physical circuit is as it is shown on figure 3, solar panel can need to select one or more according to power
Connection in series-parallel, solar panel is through the 3rd low pressure drop diode D5 to super capacitor SCAP1 charging energy-storing, and booster circuit will be super
The voltage of level electric capacity SCAP1 rises a height of galvanic current pressure Vsolar.Booster circuit by boost chip U1 and peripheral resistance R3,
R4 and electric capacity C5, C6, C7 composition.
CT power-supply circuit and solar energy power-supply circuit realize automatic seamless by low pressure drop diodes in parallel and switch, and voltage is high
Person preferentially powers；I.e. higher when the energy of solar energy power taking, and CT power taking due to the less output voltage of load relatively low time, solar energy
Preferential power supply；When a load is relatively big, and CT power taking output voltage is higher, and when solar energy power taking is relatively low, CT power taking is preferentially powered,
Being achieved in that the automatic seamless switching of CT power taking and solar energy power taking, the method simple in construction, switch speed is fast.
CT power taking combines as main power source with solar energy power taking, and battery is as stand-by power supply, main power source and stand-by power supply
Accessing two inputs of analog switch, the output of analog switch is as working power.Default situations Imitating switch selects main
Power supply exports, and is monitored the voltage of main power source by monitoring voltage chip, when the voltage of main power source is less than the threshold of monitoring voltage chip
During value, monitoring voltage chip produces low level reset signal control analog switch and selects stand-by power supply to power, can be to greatest extent
Reduce environment on take can impact, reduce battery power consumption, extend product service life.
Foregoing circuit utilizes CT power taking, solar energy power taking simultaneously, and battery is powered three kinds of organic knots of mutual supplement with each other's advantages method of supplying power to
Closing, it is ensured that terminal power supply reliability under various environmental conditions, three kinds of power supplys control to be capable of automatic seamless without CPU and cut
Change, it is ensured that indicating fault location terminal runs without interruption for a long time.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For Yuan, on the premise of without departing from the technology of the present invention principle, it is also possible to make some improvement and deformation, these improve and deformation
Also should be regarded as protection scope of the present invention.
Claims (4)
1. one kind be applicable to taking of overhead type indicating fault location terminal can circuit, it is characterised in that: include solar energy power taking electricity
Road, CT power-supply circuit, LDO, battery, analog switch and power monitoring chip；
The outfan of described solar energy power-supply circuit is connected with the input of LDO by the first low pressure drop diode, and described CT takes
The outfan of electricity circuit is connected with the input of LDO by the second low pressure drop diode, the outfan of described LDO and analog switch
Input connect, the outfan of described battery is connected with another input of analog switch, described analog switch
Export the working power as overhead type indicating fault location terminal, the input of described power monitoring chip and the output of LDO
End connects, and the outfan of described power monitoring chip is connected with the control input of analog switch.
The most according to claim 1 a kind of be applicable to overhead type indicating fault location terminal take can circuit, its feature exists
In: described CT power-supply circuit includes power taking CT, control switching circuit, current rectifying and wave filtering circuit and the voltage stabilizing protection electricity being sequentially connected with
Road.
The most according to claim 2 a kind of be applicable to overhead type indicating fault location terminal take can circuit, its feature exists
In: described power taking CT positions the measurement same winding of CT time-sharing multiplex of terminal with overhead type indicating fault.
The most according to claim 1 a kind of be applicable to overhead type indicating fault location terminal take can circuit, its feature exists
In: described solar energy power-supply circuit includes solar panel, the 3rd low pressure drop diode, super capacitor and booster circuit；
Described solar panel, the 3rd low pressure drop diode and booster circuit are sequentially connected with, one end of described super capacitor with
The outfan of the 3rd low pressure drop diode connects, the other end ground connection of described super capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610547587.7A CN106160182A (en) | 2016-07-12 | 2016-07-12 | A kind of be applicable to taking of overhead type indicating fault location terminal can circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610547587.7A CN106160182A (en) | 2016-07-12 | 2016-07-12 | A kind of be applicable to taking of overhead type indicating fault location terminal can circuit |
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| CN106160182A true CN106160182A (en) | 2016-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610547587.7A Pending CN106160182A (en) | 2016-07-12 | 2016-07-12 | A kind of be applicable to taking of overhead type indicating fault location terminal can circuit |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109546730A (en) * | 2019-01-23 | 2019-03-29 | 无锡圣普电力科技有限公司 | A kind of transient state recording type fault detector and its method of supplying power to |
| CN110212742A (en) * | 2019-06-20 | 2019-09-06 | 北京元六鸿远电子科技股份有限公司 | A kind of DC wave filter not generating great start-up current |
| CN112394219A (en) * | 2020-11-03 | 2021-02-23 | 南方电网数字电网研究院有限公司 | Current measuring device |
| CN112600307A (en) * | 2020-12-31 | 2021-04-02 | 广西电网有限责任公司百色供电局 | Power transmission line multi-energy complementary power supply system and power supply method thereof |
| CN114696361A (en) * | 2022-04-21 | 2022-07-01 | 北京国电通网络技术有限公司 | Intelligent power supply |
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| CN202957648U (en) * | 2012-12-13 | 2013-05-29 | 辽宁省电力有限公司锦州供电公司 | Power supply module for fault indicator |
| CN204316107U (en) * | 2014-10-15 | 2015-05-06 | 李卉 | A kind of collapsible replaceable lithium battery solar energy mobile charger |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109546730A (en) * | 2019-01-23 | 2019-03-29 | 无锡圣普电力科技有限公司 | A kind of transient state recording type fault detector and its method of supplying power to |
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| CN110212742A (en) * | 2019-06-20 | 2019-09-06 | 北京元六鸿远电子科技股份有限公司 | A kind of DC wave filter not generating great start-up current |
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| CN112600307A (en) * | 2020-12-31 | 2021-04-02 | 广西电网有限责任公司百色供电局 | Power transmission line multi-energy complementary power supply system and power supply method thereof |
| CN114696361A (en) * | 2022-04-21 | 2022-07-01 | 北京国电通网络技术有限公司 | Intelligent power supply |
| CN114696361B (en) * | 2022-04-21 | 2023-01-24 | 北京国电通网络技术有限公司 | Intelligent power supply |
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Application publication date: 20161123 |
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