CN114530926A - Power supply equipment and method capable of automatically switching power supply mode - Google Patents
Power supply equipment and method capable of automatically switching power supply mode Download PDFInfo
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- CN114530926A CN114530926A CN202111673041.3A CN202111673041A CN114530926A CN 114530926 A CN114530926 A CN 114530926A CN 202111673041 A CN202111673041 A CN 202111673041A CN 114530926 A CN114530926 A CN 114530926A
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000012780 transparent material Substances 0.000 claims abstract description 6
- 238000012806 monitoring device Methods 0.000 claims description 32
- 230000005484 gravity Effects 0.000 claims description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 230000009471 action Effects 0.000 claims description 14
- 229910052742 iron Inorganic materials 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 230000008901 benefit Effects 0.000 description 7
- 230000005611 electricity Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 230000009194 climbing Effects 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 238000013024 troubleshooting Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
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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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
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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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/466—Scheduling the operation of the generators, e.g. connecting or disconnecting generators to meet a given demand
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
- H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
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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
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
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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
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/28—The renewable source being wind energy
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- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a power supply device and a method capable of automatically switching power supply modes, wherein the device comprises a device shell, solar panels are covered on the upper part and the side surface of the device shell, a wind driven generator is arranged on the upper part of the device shell, an electric energy output port and a CT power supply access port are also arranged on the side surface of the power supply device, the CT power supply access port is connected with a high-voltage cable, the electric energy output port is connected with a fault indicator, and the device shell at the bottom of the power supply device is made of transparent materials. The invention comprises two power supply modes for supplying power to the fault indicator, and when the electric quantity of the storage battery is insufficient or the fault occurs, the CT power supply is automatically switched, so that the working stability of the fault indicator is improved; the bottom of the device is made of transparent materials, so that workers can conveniently observe the light emitting condition of the indicator lamp in the power supply device on the ground, the working efficiency of the workers is improved, and the working risk of the workers is reduced.
Description
Technical Field
The invention relates to the technical field of power supply of fault indicators, in particular to a power supply device and a power supply method capable of automatically switching power supply modes.
Background
The fault indicator is an electromagnetic induction device which can reflect the passing of short-circuit current and show a fault sign board. The fault indicator is generally arranged on an overhead line, an overhead cable or an underground cable and a switch cabinet busbar, and cannot be directly supplied with power from a grounding side, and the power supply problem of the fault indicator is important guarantee for normal operation of the fault indicator. The current fault indicator generally adopts the mode of getting electricity nearby and current transformer, and the work load is great for getting the electric circuit to lay nearby, and the cost is higher and the security is not good, and current transformer gets electricity and can reduce the volume, reduce cost, but when getting electric circuit load and being less than getting electric CT starting current, fault indicator can unable normal operating to when getting electric circuit to break down and not in time discovering, fault indicator can be because the unable normal operating of power supply inadequacy, can not provide help when troubleshooting.
At present, the prior art generally optimizes and improves the power supply stability of a fault indicator and the size of a device, for example, a power supply device applied to a fault indicator of a power transmission line disclosed in the Chinese patent document with the publication number of CN210092949U, the device comprises an energy-taking coil, an induction power-taking module, a super-capacitor energy storage module, a dry battery module and a fault indicator power supply system; the energy taking coil is arranged on the high-voltage transmission line and is connected with the voltage input interface of the induction power taking module, the direct current stabilized voltage output interface of the induction electricity taking module is connected with the direct current voltage input interface of the super capacitor energy storage module, the capacitance voltage output interface of the super-capacitance energy storage module and the voltage output interface of the dry battery module form a parallel connection mode and then are connected with the voltage input interface of the power supply system of the fault indicator, the voltage output interface of the fault indicator power supply system is connected with each functional module of the fault indicator system, the novel device has the characteristics of low carbonization, light weight, compact structure, convenient installation, strong environmental adaptability and the like, is suitable for the occasions of monitoring the running state of the power transmission line in real time, but the problems that the power supply mode of the power supply equipment is single and whether the power supply equipment works normally or not cannot be judged are not solved.
Disclosure of Invention
The invention provides a power supply device and a method capable of automatically switching power supply modes, aiming at overcoming the problem that the power supply mode of the fault indicator power supply device in the prior art is single.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a but power supply unit of automatic switch-over power supply mode, includes the equipment shell, the top and the side of equipment shell cover have solar panel, the top of equipment shell still is equipped with a aerogenerator, power supply unit's side still is equipped with electric energy output port and CT power supply access port, CT power supply access port links to each other with high tension cable, electric energy output port is connected with the fault indicator, power supply unit's bottom equipment shell is made for transparent material. The invention is provided with a solar panel and a wind driven generator, the solar panel and the wind driven generator are connected with a storage battery to charge the storage battery, and a CT power supply access port is also arranged, the CT power supply access port is connected with a high-voltage cable, two power supply modes of the storage battery and the CT power supply are included to supply power for a fault indicator, the electric energy in the storage battery is used to supply power for the fault indicator at ordinary times, when the storage battery has no electric energy or the power supply part of the storage battery has a fault, the electric energy is converted into the CT power supply, the two power supply modes ensure the stability of the power supply of the equipment and the working stability of the fault indicator, the fault indicator is often arranged on an overhead line and an overhead cable, the position is usually very high, the shell of the bottom equipment of the power supply equipment is arranged to be transparent, the staff can conveniently observe the light-emitting condition of an indicator lamp in the power supply equipment on the ground without climbing to the high altitude to check the equipment, the working efficiency of the staff is improved, and the working risk of the staff is also reduced.
As a preferable scheme of the invention, a low-voltage circuit board is arranged in the power supply equipment, the low-voltage circuit board is respectively connected with a solar panel, a wind driven generator and a storage battery, the storage battery is respectively connected with an electromagnet and an indicator light L1, the indicator light L1 is connected with the S1 end of the single-pole double-throw switch, a high-voltage circuit board is also arranged in the power supply equipment, the high-voltage circuit board is respectively connected with an indicator light L2 and a CT power supply access port, the indicator light L2 is connected with the S2 end of the single-pole double-throw switch, and a movable contact of the single-pole double-throw switch is connected with an electric energy output port. The low-voltage circuit board and the high-voltage circuit board process input current to ensure the stability and the applicability of electric energy, the electromagnet is used for controlling the connection mode of the single-pole double-throw switch, when the storage battery is electrified, the electromagnet generates a magnetic field to attract the movable contact of the single-pole double-throw switch to be connected with the S1 end, the fault indicator is powered by the storage battery, when the storage battery is not electrified or the power supply circuit of the storage battery fails, the electromagnet is not electrified, the magnetic field disappears, the movable contact of the single-pole double-throw switch falls downwards under the action of gravity to enable the movable contact of the single-pole double-throw switch to be connected with the S2 end, and the CT is used for supplying electric energy to the fault indicator.
In a preferred embodiment of the present invention, the movable contact is composed of an iron block and a copper block. When the accumulator is charged, the electromagnet connected with the accumulator can generate a magnetic field, the magnetic field has an attraction force on the iron block on the movable contact, so that the movable contact slides upwards to be connected with the S1 end of the single-pole double-throw switch, the circuit is conducted, when the accumulator is insufficient in electric quantity or has a fault, the movable contact slides downwards under the action of gravity to be connected with the S2 end of the single-pole double-throw switch to become a CT (current transformer) for supplying power, and the copper block ensures that the movable contact has good conductivity.
As a preferable scheme of the invention, the storage battery is connected with an electric quantity monitoring device, a controllable switch is arranged between the storage battery and the electromagnet, and the electric quantity monitoring device is connected with the controllable switch. The electric quantity monitoring device monitors the electric quantity of battery, according to the on-off state of the controllable switch of electric quantity control of battery, and then the operating condition of control electro-magnet, the advantage of using the connection state of the effect control single-pole double-throw switch of the suction and the gravity of electro-magnet is: no matter the battery electric quantity is not enough or breaks down, or the electric quantity monitoring device breaks down, or the controllable switch breaks down, can both guarantee finally that power supply unit can supply power to the fault indicator, and the reliability is high.
A method capable of automatically switching power supply modes comprises the following steps: q1: the electric quantity of the storage battery is sufficient, the controllable switch is in a closed state, the electromagnet normally works, the movable contact of the single-pole double-throw switch is connected with the end S1, and the fault indicator is powered by the storage battery at the moment; q2: when the electric quantity monitoring device monitors that the electric quantity of the storage battery is less than A%, the electric quantity monitoring device controls the controllable switch to be disconnected, the electromagnet stops working, the movable contact of the single-pole double-throw switch is disconnected with the end S1 and connected with the end S2, and the fault indicator is powered by the CT; q3: when the electric quantity monitoring device monitors that the electric quantity of the storage battery is larger than B%, the electric quantity monitoring device controls the controllable switch to be switched on, the electromagnet starts to work, the movable contact of the single-pole double-throw switch is disconnected with the S2 end and is connected with the S1 end, and the fault indicator is powered by the storage battery at the moment. The method for automatically switching the power supply mode can realize automatic switching to CT power supply when the electric quantity of the storage battery is insufficient, and switching to storage battery power supply when the electric quantity of the storage battery is sufficient, so that the stability of power supply of the fault indicator can be ensured to a great extent, and the fault indicator can be ensured to work normally.
As a preferable scheme of the present invention, the disconnection of the movable contact of the single-pole double-throw switch in the Q2 from the S1 end and the connection with the S2 end is specifically: after the electromagnet stops working, the magnetic field disappears, the attraction of the electromagnet to the movable contact of the single-pole double-throw switch disappears, the movable contact of the single-pole double-throw switch is naturally disconnected with the end S1 under the action of gravity, and the movable contact falls downwards, is in contact with the end S2 and is conducted and electrified. The invention uses the action of the attraction force and the gravity force of the electromagnet to control the connection state of the single-pole double-throw switch, and the control has the advantages that: no matter the battery electric quantity is not enough or breaks down, or the electric quantity monitoring device breaks down, or the controllable switch breaks down, can both guarantee finally that power supply unit can supply power to the fault indicator, and the reliability is high.
As a preferred scheme of the present invention, the movable contact of the single-pole double-throw switch in Q3, which is disconnected from the end S2 and connected to the end S1, is specifically: the electromagnet starts to work to generate a magnetic field, the electromagnet generates suction force on the movable contact of the single-pole double-throw switch, so that the movable contact of the single-pole double-throw switch is disconnected with the end S2, the movable contact moves upwards and is in contact with the end S1, and the electromagnet is conducted and electrified. The invention uses the action of the attraction force and the gravity force of the electromagnet to control the connection state of the single-pole double-throw switch, and the control has the advantages that: no matter the battery electric quantity is not enough or breaks down, or the electric quantity monitoring device breaks down, or the controllable switch breaks down, can both guarantee finally that power supply unit can supply power to the fault indicator, and the reliability is high.
In a preferred embodiment of the present invention, the a% and the B% are set by themselves according to the capacity of the battery. If the capacity of the battery is large, the values of a and B may be set to be small, and if the capacity of the battery is small, the values of a and B need to be large, but the value of B is ensured to be equal to or larger than the value of a.
Therefore, the invention has the following beneficial effects: 1. the fault indicator comprises a storage battery power supply mode and a CT power supply mode, wherein the storage battery power supply mode and the CT power supply mode are used for supplying power to the fault indicator, when the storage battery is insufficient in electric quantity or has a fault, the CT power supply mode is automatically switched, the fault indicator cannot stop working, and the working stability of the fault indicator is improved; 2. the bottom of the device is made of transparent materials, so that workers can conveniently observe the light emitting condition of the indicator lamp in the power supply equipment on the ground without climbing to the high altitude to check the device, the working efficiency of the workers is improved, and the working risk of the workers is reduced; 3. the invention uses the action of the attraction force and the gravity force of the electromagnet to control the connection state of the single-pole double-throw switch, and the control has the advantages that: no matter the battery electric quantity is not enough or breaks down, or the electric quantity monitoring device breaks down, or the controllable switch breaks down, can both guarantee finally that power supply unit can supply power to the fault indicator, and the reliability is high.
Drawings
FIG. 1 is a schematic diagram of the structure of the apparatus of the present invention;
FIG. 2 is a schematic diagram of the structure of the movable contact of the single pole, double throw switch of the present invention;
FIG. 3 is a flow chart of a method of the present invention;
in the figure: 1. an equipment housing; 2. a solar panel; 3. a wind power generator; 4. an electric energy output port; 5. a movable contact; 6. a CT power supply access port; 501. an iron block; 502. a copper block; 7. an electric quantity monitoring device; 8. a controllable switch.
Detailed Description
The invention is further described with reference to the following detailed description and accompanying drawings.
As shown in fig. 1, a power supply device capable of automatically switching power supply modes comprises a device shell 1, a solar panel 2, a wind driven generator 3, an electric energy output port 4, a movable contact 5, a CT power supply access port 6, an electric quantity monitoring device 7 and a controllable switch 8, wherein the solar panel 2 covers the upper part and the side surface of the device shell 1, the wind driven generator 3 is arranged above the device, the electric energy output port 4 and the CT power supply access port 6 are arranged on the side surface of the power supply device, the CT power supply access port 6 is connected with a high-voltage cable, and the electric energy output port 4 is connected with a fault indicator. The solar energy power supply device is provided with a solar panel 2 and a wind driven generator 3, wherein the solar panel 2 and the wind driven generator 3 are connected with a storage battery through a low-voltage circuit board to charge the storage battery, and the CT power supply access port 6 is also connected with a high-voltage cable, two power supply modes including the storage battery and the CT power supply are used for supplying power to a fault indicator, the electric energy in the storage battery is used for supplying power to the fault indicator at ordinary times, and when the storage battery has no electric energy or the power supply part of the storage battery fails, the electric energy is converted into the CT power supply.
As shown in fig. 1, a low-voltage circuit board is arranged inside the power supply device, the low-voltage circuit board is respectively connected with the solar panel 2, the wind driven generator 3 and the storage battery, the storage battery is respectively connected with an electromagnet and an indicator light L1, the indicator light L1 is connected with the S1 end of the single-pole double-throw switch, a high-voltage circuit board is further arranged inside the power supply device, the high-voltage circuit board is respectively connected with an indicator light L2 and a CT power supply access port 6, the indicator light L2 is connected with the S2 end of the single-pole double-throw switch, and the movable contact 5 of the single-pole double-throw switch is connected with the electric energy output port 4. The low-voltage circuit board and the high-voltage circuit board process input current to ensure the stability and the applicability of electric energy, the electromagnet is used for controlling the connection mode of the single-pole double-throw switch, when the storage battery is electrified, the electromagnet generates a magnetic field to attract the movable contact 5 of the single-pole double-throw switch to be connected with the S1 end, the fault indicator is powered by the storage battery, when the storage battery is not electrified or the storage battery power supply circuit fails, the electromagnet is not electrified, the magnetic field disappears, the movable contact 5 of the single-pole double-throw switch falls downwards under the action of gravity, so that the movable contact 5 of the single-pole double-throw switch is connected with the S2 end, and the CT is used for supplying the electric energy to the fault indicator.
As shown in fig. 1, the power supply device of the present invention further includes an indicator light L1 and an indicator light L2, and the indicator light L1 and the indicator light L2 are two indicator lights with different colors. When the accumulator is electrified, the electromagnet generates a magnetic field to attract the movable contact 5 of the single-pole double-throw switch to be connected with the end S1, the fault indicator is powered by the accumulator, the indicator lamp L1 emits light, when the electric quantity of the accumulator is insufficient or the power supply circuit of the accumulator is in fault, the electromagnet is not electrified, the magnetic field disappears, the movable contact 5 of the single-pole double-throw switch falls downwards under the action of gravity, so that the movable contact 5 of the single-pole double-throw switch is connected with the end S2, the CT supplies power to provide electric energy for the fault indicator, the indicator lamp L2 emits light, the power supply mode can be judged to be supplied to the fault indicator by opening a device according to the color of light, when the indicator lamp L2 emits light for a long time, the accumulator can possibly have fault, the operator is informed to carry out maintenance operation as soon as possible, and when the indicator lamp L1 and the indicator lamp L2 do not emit light, the power can be judged that the power supply equipment or the fault indicator has fault, staff needs to be notified to troubleshoot and repair the power supply equipment and the fault indicator. The invention is provided with the indicating lamps with different light-emitting colors, can judge the power supply mode according to the light-emitting condition and can also carry out fault troubleshooting on the power supply equipment and the fault indicator.
As shown in fig. 2, the movable contact 5 includes an iron block 501 and a copper block 502. When the electric quantity of the storage battery is sufficient, the electromagnet connected with the storage battery can generate a magnetic field, the magnetic field has an attraction force on the iron block 501 on the movable contact 5, so that the movable contact 5 slides upwards to be connected with the S1 end of the single-pole double-throw switch, the circuit of the storage battery is conducted, when the electric quantity of the storage battery is insufficient or the storage battery fails, the electromagnet stops working, the magnetic field disappears, the movable contact 5 slides downwards under the action of gravity, the movable contact is disconnected with the S1 end of the single-pole double-throw switch and connected with the S2 end to become a CT power supply, and the copper block 502 ensures that the movable contact 5 has good conductivity.
The power supply equipment of the invention has a plurality of power output ports, which can supply power to a single fault indicator and can also supply power to a plurality of fault indicators simultaneously, because a plurality of high-voltage cables in a power grid are usually required, a plurality of fault indicators are required to monitor the high-voltage cables, three or even more fault indicators on the high-voltage cables can be often seen to be arranged on the high-voltage cables side by side, under the condition, the distance between the fault indicators is very close, the same power supply equipment can be completely used for supplying power to the fault indicators, the convenience and the cost are saved, the storage battery in the equipment is provided with the solar panel 2 and the wind driven generator 3, the storage battery is charged almost all the time, and the CT power supply is taken as a guarantee, so that the problem of insufficient power caused by the connection of the fault indicators is avoided.
The high-voltage circuit board comprises a voltage reduction module, a voltage stabilizing module, a rectifying module and a filtering module, and the low-voltage circuit board comprises the voltage stabilizing module, the rectifying module and the filtering module. The electric energy that CT got the electricity is through the processing of high voltage circuit board, guarantees that the CT power supply accords with fault indicator's power consumption standard, and the electric energy that solar panel 2 and aerogenerator 3 provided can not cause the damage to the battery when guaranteeing to charge the battery through the processing of low voltage circuit board, guarantees the working life of battery.
The bottom equipment shell 1 of the power supply equipment is made of transparent materials. Fault indicator often installs on overhead line, aerial cable, and the position is very high usually, sets up power supply unit's bottom equipment shell 1 to transparent, makes things convenient for the staff to observe the luminous condition of pilot lamp in power supply unit on ground, needn't climb to go up to inspect the operating condition that can know equipment to equipment on the high altitude, has improved staff's work efficiency, has also reduced the work risk.
The battery is connected with electric quantity monitoring devices 7, is equipped with controllable switch 8 between battery and the electro-magnet, and electric quantity monitoring devices 7 links to each other with controllable switch 8. The electric quantity monitoring device 7 monitors the electric quantity of battery, according to the on-off state of the controllable switch 8 of electric quantity control of battery, and then the state of control electro-magnet, the advantage of the connection state of the effect control single-pole double-throw switch of the suction and the gravity that use the electro-magnet is: no matter the battery electric quantity is not enough or breaks down, or the electric quantity monitoring device 7 breaks down, or the controllable switch 8 breaks down, finally, the power supply equipment can be guaranteed to supply power to the fault indicator, and the reliability is extremely high.
As shown in fig. 3, a method capable of automatically switching power supply modes includes the following steps: q1: the electric quantity of the storage battery is sufficient, the controllable switch 8 is in a closed state, the electromagnet normally works, the movable contact of the single-pole double-throw switch is connected with the end S1, and the fault indicator is powered by the storage battery at the moment; q2: when the electric quantity monitoring device 7 monitors that the electric quantity of the storage battery is less than A%, the electric quantity monitoring device 7 controls the controllable switch 8 to be disconnected, the electromagnet stops working, the movable contact of the single-pole double-throw switch is disconnected with the S1 end and connected with the S2 end, and the fault indicator is powered by the CT; q3: when the electric quantity monitoring device 7 monitors that the electric quantity of the storage battery is greater than B%, the electric quantity monitoring device 7 controls the controllable switch 8 to be closed, the electromagnet starts to work, the movable contact of the single-pole double-throw switch is disconnected with the end S2 and connected with the end S1, and the fault indicator is powered by the storage battery at the moment. The method for automatically switching the power supply mode can realize automatic switching to CT power supply when the electric quantity of the storage battery is insufficient, and switching to storage battery power supply when the electric quantity of the storage battery is sufficient, so that the stability of power supply of the fault indicator can be ensured to a great extent, and the fault indicator can be ensured to work normally.
The disconnection of the movable contact of the single-pole double-throw switch in the Q2 from the end S1 and the connection with the end S2 is as follows: after the electromagnet stops working, the magnetic field disappears, the attraction of the electromagnet to the movable contact of the single-pole double-throw switch disappears, the movable contact of the single-pole double-throw switch is naturally disconnected with the end S1 under the action of gravity, and the movable contact falls downwards, is in contact with the end S2 and is conducted and electrified. The invention uses the action of the attraction force and the gravity force of the electromagnet to control the connection state of the single-pole double-throw switch, and the control has the advantages that: no matter the battery electric quantity is not enough or breaks down, or the electric quantity monitoring device 7 breaks down, or the controllable switch 8 breaks down, finally, the power supply equipment can be guaranteed to supply power to the fault indicator, and the reliability is extremely high.
The disconnection of the movable contact of the single-pole double-throw switch in the Q3 from the end S2 and the connection with the end S1 is as follows: the electromagnet starts to work to generate a magnetic field, the electromagnet generates suction force on the movable contact of the single-pole double-throw switch, so that the movable contact of the single-pole double-throw switch is disconnected with the end S2, the movable contact moves upwards and is in contact with the end S1, and the electromagnet is conducted and electrified. The invention uses the action of the attraction force and the gravity force of the electromagnet to control the connection state of the single-pole double-throw switch, and the control has the advantages that: no matter the battery electric quantity is not enough or breaks down, or the electric quantity monitoring device 7 breaks down, or the controllable switch 8 breaks down, finally, the power supply equipment can be guaranteed to supply power to the fault indicator, and the reliability is extremely high.
A% and B% are set by the battery capacity. If the capacity of the storage battery is large, the value of A and B can be set to be small, if the capacity of the storage battery is small, the value of A and B needs to be large, and ammunition guarantees that the value of B is larger than or equal to the value of A
When the device supplies power to the fault indicator, the storage battery is firstly used for supplying power to the fault indicator, when the electric quantity monitoring device monitors that the electric quantity of the storage battery is less than 2 percent, the electric quantity monitoring device controls the controllable switch to be switched off, or the circuit of the storage battery breaks down, the electromagnet is not electrified any more, the magnetic field generated by the electromagnet disappears, due to the action of gravity, the movable contact of the single-pole double-throw switch falls downwards, and is automatically disconnected with the end S1, and is connected with the end S2, so that the CT electricity-taking circuit is switched on, the fault indicator becomes the CT power supply, when the solar panel and/or the wind driven generator charge the storage battery and reaches 20 percent, the electric quantity monitoring device controls the controllable switch to be switched on, the electromagnet is electrified again, the magnetic field is generated again, the magnetic field has a suction force on the iron block on the movable contact of the single-pole double-throw switch, so that the movable contact slides upwards and is disconnected with the end S2, and the terminal S1 is connected, so that the storage battery is connected to the power supply circuit, and the storage battery supplies power to the fault indicator again.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention.
Claims (8)
1. The utility model provides a but power supply unit of automatic switch-over power supply mode, characterized by, includes the shell, the top and the side cover of shell have solar panel, the top of shell still is equipped with a aerogenerator, power supply unit's side still is equipped with delivery outlet and CT input port, the CT input port links to each other with high tension cable, the delivery outlet is connected with the fault indicator, power supply unit's bottom shell is made for transparent material.
2. The power supply equipment capable of automatically switching power supply modes according to claim 1, wherein a low-voltage circuit board is arranged inside the power supply equipment, the low-voltage circuit board is respectively connected with a solar panel, a wind driven generator and a storage battery, the storage battery is respectively connected with an electromagnet and an indicator lamp L1, the indicator lamp L1 is connected with an S1 end of the single-pole double-throw switch, a high-voltage circuit board is further arranged inside the power supply equipment, the high-voltage circuit board is respectively connected with an indicator lamp L2 and a CT input port, the indicator lamp L2 is connected with an S2 end of the single-pole double-throw switch, and a movable contact of the single-pole double-throw switch is connected with an output port.
3. A power supply apparatus capable of automatically switching a power supply mode according to claim 2, wherein said movable contact is composed of an iron block and a copper block.
4. The power supply equipment capable of automatically switching power supply modes according to claim 2, wherein the storage battery is connected with a power monitoring device, a controllable switch is arranged between the storage battery and the electromagnet, and the power monitoring device is connected with the controllable switch.
5. An automatic switching power supply method applied to the power supply equipment capable of automatically switching the power supply mode according to claim 4, characterized by comprising the following steps:
q1: the electric quantity of the storage battery is sufficient, the controllable switch is in a closed state, the electromagnet normally works, the movable contact of the single-pole double-throw switch is connected with the S1 end, and the fault indicator is powered by the storage battery at the moment;
q2: when the electric quantity monitoring device monitors that the electric quantity of the storage battery is less than A%, the electric quantity monitoring device controls the controllable switch to be disconnected, the electromagnet stops working, the movable contact of the single-pole double-throw switch is disconnected with the end S1 and connected with the end S2, and the fault indicator is powered by the CT;
q3: when the electric quantity monitoring device monitors that the electric quantity of the storage battery is larger than B%, the electric quantity monitoring device controls the controllable switch to be closed, the electromagnet starts to work, the movable contact of the single-pole double-throw switch is disconnected with the S2 end and is connected with the S1 end, and the fault indicator is powered by the storage battery at the moment.
6. The method as claimed in claim 5, wherein the step of disconnecting the movable contact of the single-pole double-throw switch from the terminal S1 and connecting the movable contact to the terminal S2 in the Q2 is as follows: after the electromagnet stops working, the magnetic field disappears, the attraction of the electromagnet to the movable contact of the single-pole double-throw switch disappears, the movable contact of the single-pole double-throw switch is naturally disconnected with the end S1 under the action of gravity, and the movable contact falls downwards, is in contact with the end S2 and is conducted and electrified.
7. The method as claimed in claim 1, wherein the step of disconnecting the movable contact of the single-pole double-throw switch from the S2 terminal and connecting the movable contact of the Q3 to the S1 terminal is as follows: the electromagnet starts to work to generate a magnetic field, the electromagnet generates suction force on the movable contact of the single-pole double-throw switch, so that the movable contact of the single-pole double-throw switch is disconnected with the end S2, the movable contact moves upwards and is in contact with the end S1, and the electromagnet is conducted and electrified.
8. The method as claimed in claim 1, wherein the A% and B% are set by the battery capacity.
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| CN2021113420769 | 2021-11-12 | ||
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