CN206650043U - For driving the electronic installation of electrical apparatus release - Google Patents
For driving the electronic installation of electrical apparatus release Download PDFInfo
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- CN206650043U CN206650043U CN201720374781.XU CN201720374781U CN206650043U CN 206650043 U CN206650043 U CN 206650043U CN 201720374781 U CN201720374781 U CN 201720374781U CN 206650043 U CN206650043 U CN 206650043U
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Abstract
The utility model relates generally to the electronic installation for driving electrical apparatus release, is exactly mainly to provide a kind of electronic installation for being used to drive electrical apparatus release to perform shut-off action or execution ON Action.Including for providing storage capacitor of the driving voltage to electrical apparatus release, wherein there is an electric pressure converter to be used to charge to storage capacitor, one group of output end for being respectively coupled to storage capacitor both ends corresponds to electrical apparatus release offer voltage, first switch is connected between one end of storage capacitor and an output end, is connected in parallel on the both ends of storage capacitor after load and second switch series connection again.The higher current density for flowing through tripping coil can be provided to turn off electrical apparatus release in time, script cost can be used lower the exigent driver of storage capacitor and the less demanding conventional capacitive scheme of energy density, and the normal operation of whole power system is ensured with this.
Description
Technical field
The utility model is mainly concerned with power system, exactly, is mainly to provide a kind of for driving electrical apparatus release to hold
Row shut-off acts or performed the electronic installation of ON Action, can provide the higher current density for flowing through tripping coil and come in time
Turn off electrical apparatus release, based in the electronic installation, cost being used lower the exigent driver of storage capacitor originally and
The less demanding conventional capacitive scheme of energy density, the normal operation of whole power system is ensured with this.
Background technology
In power electronic system, the event that various incidents cause voltage to fall rapidly, power train often occurs
The power failure of system or obvious significantly decompression belong to this kind of event, typically may require that now based on various considerations to being protected
The power network line of shield is powered off, if potential unsafe factor may be caused without power-off, for example after power loss again
The equipment on circuit and staff protected during recovery to breaker may cause unexpected injury.Based on other such as people
Dynamic maintenance or maintenance power equipment, may be also required to cut off power network.The major defect of currently existing technology is：Do not have after power-off
There is the tripping coil that suitable reserve battery is breaker to add defined voltage, especially as such as photovoltaic combiner box
Reserve battery is more a lack of in electrical equipment, this leads to not turn off shielded power network line rapidly in the instantaneous of power-off.
Tripping coil is wrapped on magnetic core in breaker, is acted free tripping mechanism once tripping coil produces magnetic force, can be forced master
Contact disconnects the circuit by breaker protection, but the tripping coil of breaker only has the voltage applied in a short period of time
Reaching could cause magnetic core moment to produce enough absorption affinities when to a certain degree, if applied to the undertension on tripping coil
Then it is difficult to which driving breaker to perform trip action realizes separating brake.It is worth noting that, the breaker involved by the application is this
The common electrical switching device in field, such as patent application US9013852 of U.S. Publication etc. have in detail to the function of breaker
Description, therefore the application regards breaker as known technology.In addition, breaker or release apparatus here can be with
Substituted by the electric switch of the relay with coil windings etc, shielded power network line is carried out as long as disclosure satisfy that
The electric switch for repeating open or closed operation is regarded as the object that the application can use.Repeated in routinely driving electrical apparatus release disconnected
The driver of road or connection is usually to provide driving energy by electric capacity, and the energy density of electric capacity requires of a relatively high, causes electric capacity
Cost remain high, the electrology characteristic of electric capacity gradually reduces with aging, causes integrity problem.
In the industry cycle it is, in general, that the mechanical either electronic electromagnetic electrical apparatus release of traditional bimetal leaf and dropout Machinery Ministry
Complete overall structure is grouped into, intelligent electrical apparatus release does not include mechanical trip part then at present, only accuses that making sheet can be regarded as
The built-in controller of breaker.For electrical apparatus release with earth leakage protective device, effect is passed through when circuit has electric leakage or the person gets an electric shock
For the vector sum of the electric current of zero sequence current mutual inductor not close to zero, the primary side winding of transformer secondary coil can produce voltage,
And amplify through integrated circuit, it is tactile so as to play by leakage tripping device in about 0.1 second internal cutting off power supply when reaching setting valve
Electricity and leakage protection.Electrical apparatus release has overload, open circuit, electric leakage, under-voltage, over-pressed, uneven, under-frequency, overfrequency, inverse probability or phase
The defencive functions such as sequence；Also load monitoring, in real time measurement, requirement measurement, harmonic measure, measuring instrumentss set and maintenance, communicate,
The functions such as LCD interface displays.Generally magnetictrip only provide magnetic protection, that is, short-circuit protection its be actually a magnetic
Property return power apparatus, it is sufficiently large when electric current caused by magnetic field force overcome reaction spring adhesive armature strike draw bar so as to motivation
Structure action cut-out circuit.Pyromagnetic release provides magnetic protection and Thermal protection, Thermal protection, that is, overload protection.Thermal protection：Electricity
Thermal element generates heat when stream passes through electrical apparatus release, bimetal leaf temperature distortion, and when being deformed into a certain degree, strike draw bar is so as to band
Dynamic mechanism action cut-out circuit.In general, in circuit all with Pyromagnetic release come provide short circuit and overload protection, only one
A little special occasions provide short-circuit protection with magnetictrip, and provide overload protection by other elements such as electrothermal relay.Electronics
Electrical apparatus release can have all of above function, and can easily be adjusted.Electronic trip unit is exactly to be formed with electronic component
Circuit, main circuit current is detected, amplification, promotes tripping mechanism.The shortcomings that magnetictrip is can only to provide short-circuit protection, and its is excellent
Point is exactly that cost is low, long lifespan and affected by environment small.The shortcomings that Pyromagnetic release is can only to provide two sections of protections；Working value misses
Difference is bigger, it is not possible to adjusts, present so-called breaker of new generation can be with mechanical adjustment, but amplitude of accommodation very little, and error
It is quite big, it is affected by environment larger；Its advantage is exactly that cost is low, and stable performance, reliability is of a relatively high, not by voltage pulsation shadow
Ring, long lifespan, some models can pour line into.The advantages of electronic trip unit is that it can provide three sections of even four sections of protections, spirit
Sensitivity is high, and working value is more accurate, can adjust；It can also be connected after installing communication module additional with host computer, carry out remote control；
Substantially it is not influenced by ambient temperature；Other shortcomings are exactly that cost is too high and most of electrical apparatus release is usually that cannot pour line into.
The content of the invention
A kind of electronic installation for being used to drive electrical apparatus release is provided in the utility model, including for providing driving voltage
To electrical apparatus release REL storage capacitor C, wherein：
One electric pressure converter DC/DC is used to charge to storage capacitor C；
One group of output end N1-N2 for being respectively coupled to storage capacitor C both ends corresponds to electrical apparatus release offer voltage；
One first switch S1 is connected between storage capacitor C one end and an output end, such as first switch S1 connects
It is connected between storage capacitor C first end and output end N1, or first switch S1 is connected to storage capacitor C the second end and defeated
Go out to hold between N2；
Storage capacitor C both ends are connected in parallel on after dummy-LOAD and second switch S2 series connection of one load again.
The above-mentioned electronic installation for being used to drive electrical apparatus release, in addition to a processor unit 112, for the driving electricity
Pressure converter DC/DC will be exported after the direct current VIN progress voltage conversions of reception and be given storage capacitor C.
The above-mentioned electronic installation for being used to drive electrical apparatus release, in addition to a processor unit 112, for driving first to open
Pass turns on and off with second switch S1-S2's.
The above-mentioned electronic installation for being used to drive electrical apparatus release, in the period for not driving electrical apparatus release REL to be turned off, the place
Reason device unit 112 controls first switch S1 to enter off state, such as storage capacitor C voltage can be avoided to be coupled to electrical apparatus release
REL tripping coil 130；Only in the period of electronic installation driving electrical apparatus release REL shut-offs, the ability of processor unit 112
First switch S1 is controlled to connect, now electrical apparatus release REL tripping coil 130 is powered, and may result in and is released coil 130 and is wrapped in
Internal magnetic core produces magnetic adsorptive power, and then guides some tripping mechanisms to produce mechanical action by magnetic force, and is further driven to
The trip switch S being connected on power network lineTRISwitch to off state.
The above-mentioned electronic installation for being used to drive electrical apparatus release, the electronic installation are controlling first switch S1 in an ON state
Be intended to before driving electrical apparatus release REL shut-off, first by the processor unit 112 control second switch S2 enter on-state thereby by
The electric pressure converter DC/DC is load dummy-LOAD power supplies, and at the same time also same by the electric pressure converter DC/DC
Walk and charged to storage capacitor C.
The above-mentioned electronic installation for being used to drive electrical apparatus release, in the period for not driving electrical apparatus release REL to turn off, the processor
Unit 112 controls second switch S2 to enter off state, can effectively avoid loading dummy-LOAD consumption power；But can also
The larger load dummy-LOAD of selection resistance, such power consumption are smaller.
The above-mentioned electronic installation for being used to drive electrical apparatus release, storage capacitor is electrochemical capacitor electrolytic
capacitor。
The above-mentioned electronic installation for being used to drive electrical apparatus release, one optional but non-limiting embodiment in, it is and upper
The embodiment of text is slightly different：In the period that first switch S1 is turned off without driving electrical apparatus release REL shut-offs, described processor
Voltage of the unit 112 periodically on the described storage capacitor C of detection, voltage on the storage capacitor C power-down to less than
Preset value VTHRESHOLDWhen can control second switch S2 connect, so as to maintain the voltage on the storage capacitor C preset value with
On.It is load dummy-LOAD power supplies by electric pressure converter DC/DC in the embodiment, and also by the electric pressure converter DC/
DC is synchronous to charge to storage capacitor C, thus the voltage on storage capacitor C substantially can it is constant in relatively stable voltage level and at any time
Await orders, as long as intending to drive electrical apparatus release REL shut-offs, processor unit 112 controls first switch S1 to connect and provides for according with once
Close the driving voltage of desired driving electrical apparatus release REL actions.
The above-mentioned electronic installation for being used to drive electrical apparatus release, the electric pressure converter be BUCK circuits or BOOST circuits or
Person is BUCK-BOOST converters.
The above-mentioned electronic installation for being used to drive electrical apparatus release, the load dummy-LOAD can be resistor, here
Load is regarded as an illusory load substantially, and basic effect is that the work of voltage conversion is operated in electric pressure converter DC/DC
Make to avoid DC/DC zero loads or excessively underloading during state.
Brief description of the drawings
Read it is described further below and with reference to the following drawings after, feature and advantage of the present utility model will be evident：
Fig. 1 is the example schematic for the electronic installation that illusory load is not provided in the utility model.
Fig. 2 is the example schematic for the electronic installation that illusory load is additionally provided in the utility model.
Embodiment
Below in conjunction with each embodiment, the technical scheme disclosed the utility model is clearly completely illustrated, but institute
The embodiment of description is only the utility model embodiment not all with the embodiment being described herein used in explanation, based on such
On the basis of embodiment, it will be appreciated by those skilled in the art that being obtained on the premise of creative work is not made
Any scheme belong to the scope of protection of the utility model.
It is the on-off control system that can turn off power network in time involved by teachings herein, specifically referring to Fig. 1
It is to be related to the electronic installation for driving electrical apparatus release.Electronic installation at least include power module or electric pressure converter DC/DC and
Processor unit 112, in addition to a first capacitor C, wherein electric pressure converter DC/DC can use the common straight of this area
Dc voltage changer is flowed to, its main effect is for carrying out conventional boosting or decompression or buck to distribution VIN
Voltage conversion.Specifically, supply line is conveyed to its voltage source VIN and is converted to stable voltage and carries by electric pressure converter
Operating voltage of the processor 112 as the latter is supplied, voltage source VIN is also converted into being stored in the first electricity by electric pressure converter in addition
Backup voltage or redundancy voltage V on container C.That is, electric pressure converter is at least needed for processor unit 112 and first
Capacitor C powers.
Referring to Fig. 1, in addition it is assumed that the power network line fragment between the node T1 and T2 of similar bus is to be protected
Object, namely power system have a power failure or it is obvious be significantly depressured when, it is desirable to power network line carries out open circuit, and otherwise power supply loses
Unexpected injury may be caused to the equipment on shielded power network line and staff when recovering again after electricity.According to industry
Safety requirements needs to set electric switch on power network line, and the optional species of electric switch is many but it belongs to this area
Prior art, therefore it will not go into details by the application, its main effect can exactly be switched on or switched off power network line.It is assumed that electrically open
Pass has tripping coil 130, and tripping coil 130 in the industry cycle has following function：Tripping coil 130 is by superfluous on capacitor C
Remaining voltage V excitation, being primarily referred to as tripping coil 130 here needs to rely on redundancy voltage V as driving source to be powered, and applies
Virtual voltage to tripping coil 130 could trigger switching electrical switches into off state when must not be less than a threshold voltage,
Power network line is further cut off with this, if the too low electricity for causing to flow through tripping coil 130 of redundancy voltage V actual voltage value
Current density deficiency, electric switch are possible without producing shut-off action.Electric switch is threaded off by taking the common breaker of industry as an example
Coil 130 is wrapped on a magnetic core, and magnetic core is may result in when tripping coil 130 is powered and produces magnetic adsorptive power, Jin Eryou
Magnetic force guides some tripping mechanisms to produce mechanical action, and is further driven to be connected to the trip switch S of power network lineTRISwitching
Into off state.For electric switch by taking common relay as an example, tripping coil 130 causes magnetic-adsorption caused by magnetic core when being powered
The armature shell fragment of relay makes its position change, and armature shell fragment can also drive trip switch STRIContact change-over into shut-off
State.Breaker or relay or other similar electric-controlled switch belong to the electric switch element that the application can use.
Referring to Fig. 1, it is worth mentioning at this point that, if power down occurs for the distribution in supply line, even if we are in power loss event
Moment be intended to turn off electric switch, very unfortunately, it is possible to can because electric capacity C provide voltage source V dead electricity and nothing
Method is that tripping coil 130 provides suitable power supply mechanism, so that but can not be it is anticipated that completing electricity like that in face of power loss event
The shut-off of air cock.In order to solve the doubt, the conventional period of power loss event, usual power module DC/ do not occur in voltage source V
DC continues voltage source VIN carrying out voltage conversion and is stored on the first capacitor C.In a Fig. 1 optional example, design
First capacitor C has positioned at the first end of upper end and positioned at the second end of lower end, then power module or electric pressure converter DC/
DC one group of output end will correspondingly be respectively coupled to the first capacitor C first end and the second end, and power module DC/DC is by electricity
Pressure VIN carries out voltage conversion and is stored on the first capacitor C.Electronic installation also has be respectively coupled to storage capacitor C the
One end and one group of output end N1-N2 at the second end, such as output end N1 are coupled to storage capacitor C first end, output end N2 couplings
Storage capacitor C the second end is closed, is used to drive one group of output end N1-N2 of electronic installation of electrical apparatus release to be just to provide correspondingly here
Voltage is provided for electrical apparatus release REL.It is assumed that electric switch or electrical apparatus release REL have tripping coil 130, one end of tripping coil 130
N3 is connected to output end N1 and the opposite other end N3 of tripping coil 130 is connected to output end N2.First switch S1 is connected to storage
Between energy electric capacity C first end and output end N1, or first switch S1 is connected to storage capacitor C the second end and output end N2
Between, if first switch S1 is turned off, just there is no voltage naturally between one group of output end N1-N2, whereas if being the
Voltage is had between switch S1 has been switched on then one group of output end N1-N2.Tripping coil 130 needs to rely on redundancy voltage V
It is powered as driving source, and could trigger when the virtual voltage for being applied to tripping coil 130 must not be less than a threshold voltage
Switching electrical switches cut off power network line into off state, with this, cause to flow if redundancy voltage V actual voltage value is too low
Current density deficiency through tripping coil 130, electrical apparatus release REL may not produce shut-off action.Electric switch is common with industry
Electrical apparatus release REL exemplified by, tripping coil 130 is wrapped on magnetic core, may result in when tripping coil 130 is powered magnetic core produce magnetic
Property absorption affinity, and then guide some tripping mechanisms to produce mechanical action by magnetic force, and be further driven to be connected to power network line
Trip switch STRISwitch to off state.Even if first switch S1 be switched on possible situation be one group of output end N1-N2 it
Between existing voltage level be not enough to promote electrical apparatus release REL shut-off.
Referring to Fig. 2, processor 112 possess detection electric capacity voltage V whether the function of power down, detection means this belong to existing
Technology, such as voltage V are transferred to a voltage detecting port of processor 112, processor unit by divider offer partial pressure
Reception is used to characterize the magnitudes of voltage of voltage V sizes compared with default reference voltage by 112, and the magnitude of voltage for representing V is less than base
Quasi- voltage then thinks that there occurs real power loss event.It must be noted that processor unit 112 is only detecting voltage V
More than one preset value of actual power down amplitude, just think real power down be present, and voltage V it is slight up and down fluctuation can't
The malfunction of electric switch is caused, as voltage source V power down to which kind of amplitude or degree effective power loss event at last, tune can be passed through
Save and realized come reference voltage value compared with the magnitude of voltage for representing V.It is above-mentioned to be used to drive the electronics of electrical apparatus release to fill
Put, at one optionally but in non-limiting embodiment, be turned off in first switch S1 without driving electrical apparatus release REL shut-offs
Period, the periodicity periodically of processor unit 112 voltage detected on storage capacitor C, the electricity on storage capacitor C
Pressure is power-down to less than preset value VTHRESHOLDWhen can control second switch S2 connect, now by electric pressure converter DC/DC for load
Dummy-LOAD powers, and is also charged from described electric pressure converter DC/DC is synchronous to storage capacitor C, so as to remain described
Voltage on storage capacitor C is more than the preset value.In the embodiment, because being to be periodically detected voltage, storage capacitor C
On voltage constant can be stood ready substantially in relatively stable voltage level, as long as intending to drive electrical apparatus release REL shut-offs, processing
As long as device unit 112 controls first switch S1 to connect, the excitation of satisfactory driving electrical apparatus release REL actions is provided at once
Voltage.
Referring to Fig. 2, although the first capacitor C can provide redundancy voltage V lures magnetic core into trigger the energization of tripping coil 130
Enough magnetic force is produced to promote electric switch to disconnect, once but voltage source V power down the first capacitor C is lost power supply so
Its electric charge is not lasted for a long time typically, it is likely that occur its electricity be reduced within the extremely short time be not enough to promote electrically open
Turn off the situation opened.In order to overcome this thorny problem, Fig. 2 also uses electric pressure converter DC/DC, once the processor unit
112 are intending to control first switch S1 in an ON state, namely processor unit 112 be intended to be powered to tripping coil 130 and
Before driving electrical apparatus release REL shut-offs, first control second switch S2 to enter on-state by processor unit 112, thereby turned by voltage
Parallel operation DC/DC is load dummy-LOAD power supplies, and at the same time also synchronous to storage capacitor C from electric pressure converter DC/DC
Charging, now storage capacitor C can reach desired preset value V because of being electrically chargedTHRESHOLD, then processor unit 112 control again
First switch S1 processed in an ON state when, the storage capacitor C after charging is supplied between output end N1-N2 to tripping coil 130
Electricity causes electrical apparatus release REL tripping coil 130 to be powered, and may result in and is released the magnetic core generation magnetic that coil 130 is wrapped in inside
Property absorption affinity, and then guide some tripping mechanisms to produce mechanical action, and the trip switch S being further driven to by magnetic forceTRISwitching
Into off state.
Referring to Fig. 2, a kind of electronic installation for being used to drive electrical apparatus release is provided in the utility model, including for providing
Storage capacitor C of the driving voltage to electrical apparatus release REL, wherein：One electric pressure converter DC/DC is used to charge to storage capacitor C；Point
The output end N1-N2 for not being coupled to storage capacitor C both ends corresponds to electrical apparatus release REL offer voltages；One first switch S1 connection
Between storage capacitor C one end and an output end, such as first switch S1 is connected to storage capacitor C first end and output
Between holding N1, or first switch S1 is connected between storage capacitor C the second end and output end N2；One load dummy-
Storage capacitor C both ends are connected in parallel on after both LOAD and second switch S2 series connection again.Also include processor unit 112, for driving
The direct current VIN of reception export after voltage conversion giving storage capacitor C by dynamic electric pressure converter DC/DC, can use decompression or
The mode of boosting or buck carries out voltage conversion.
Referring to Fig. 2, processor unit 112 is used to drive turning on and off for first switch S1 and second switch S2.One
In individual optional embodiment, processor unit 112 is controlled in the period for not driving electrical apparatus release REL to be turned off, processor unit 112
First switch S1 processed enters shut-off OFF state, such as storage capacitor C voltage can be avoided to be directly coupled to the de- of electrical apparatus release REL
Fastening wire circle 130.In an optional embodiment, the period only in electronic installation driving electrical apparatus release REL shut-offs, processor
Unit 112 just controls first switch S1 to connect, and now electrical apparatus release REL tripping coil 130 is powered due to the power supply of electric capacity, is led
Cause is released coil 130 and is wrapped in the magnetic core generation magnetic adsorptive power of inside, and then guides some tripping mechanisms to produce by magnetic force
Mechanical action, and drive the trip switch S being connected on power network lineTRISwitch to off state.In one embodiment, locate
For reason device unit 112 in the period for not driving electrical apparatus release REL to turn off, processor unit 112 controls second switch S2 to enter shut-off shape
State, it can avoid loading dummy-LOAD consumption power；But in another embodiment, the larger load of resistance can also be selected
Dummy-LOAD, even if processor unit 112 controls second switch S2 to enter on-state, the power consumption so loaded is also relatively
It is small.In one embodiment, storage capacitor is electrochemical capacitor electrolytic capacitor or super capacitor ultra-
capacitor.In one embodiment, electric pressure converter is the either BUCK-BOOST conversions of BUCK circuits or BOOST circuits
Device.In one embodiment, load dummy-LOAD can be resistor, and load is regarded as an illusory load substantially,
Basic effect is when electric pressure converter DC/DC operates on the working condition of voltage conversion to avoid DC/DC unloaded or excessively light
Carry, can also be that electric capacity C charges while the load of electric pressure converter is presented as.
Referring to Fig. 2, when falling amplitude and exceeding default range value of electric capacity C voltage V, processor unit 112 judges hair
Give birth to power loss event and processor 112 transient state can produce command signal to indicate that second switch S2 is connected therewith.Tripping coil 130
Between being connected on electric capacity C the first and second ends with first switch S1, meaning when first switch S1 is connected can be by redundancy
Voltage V is applied to tripping coil 130, so redundancy voltage V is substantially equivalent to produce herein an excitation of drop-away current
Amount.As long as once tripping coil 130 be powered and be applied to tripping coil 130 voltage namely redundancy voltage V actual value not
On the premise of less than one threshold voltage, the current density to be circulated in tripping coil 130 can allow magnetic core to produce sufficiently strong magnetic
Power promotes electric switch or the electrical apparatus release REL to perform shut-off action.Conversely else if redundancy voltage V actual value is too low（Than
Threshold voltage is also low）Then successfully electric switch can not be promoted to turn off, because now the current density of tripping coil 130 does not reach
It is required that.
Referring to Fig. 2, it is contemplated that voltage V may potentially drop into zero, without any in an optional embodiment
Extra reserce cell, power module DC/DC can use the common DC-to-DC voltage converter of this area, it main
Effect is to carry out conventional DC/DC voltage conversions to redundancy voltage V at VIN, and is supplied to processor 112 as work electricity
Pressure.In one embodiment, processor unit 112 and the not periodically voltage on periodically detection storage capacitor,
So now nor the voltage on storage capacitor C is power-down to less than preset value VTHRESHOLDWhen just control second switch S2 connect
Logical, mechanism now is：The processor unit 112 is intending to control first switch S1 to be intended to driving in an ON state and thread off
Before device REL shut-offs, first second switch S2 is controlled to enter on-state thereby by the electric pressure converter by processor unit 112
DC/DC is load dummy-LOAD power supplies, at the same time, is also charged from electric pressure converter DC/DC is synchronous to storage capacitor C, because
Once this control first switch S1 to be intended to shut-off driving electrical apparatus release REL into on-state by processor unit 112, then energy storage electricity
Holding C abundant charging, that the current density to circulate can be allowed in tripping coil 130 to promote magnetic core to produce sufficiently strong magnetic force is de- to promote
Detain device REL and perform shut-off action.In another embodiment, the periodicity periodically of processor unit 112 detection storage
Voltage on energy electric capacity, the voltage on storage capacitor C is power-down to less than preset value VTHRESHOLDWhen second switch S2 can be controlled to connect
It is logical, it is load dummy-LOAD power supplies by electric pressure converter DC/DC, is also filled from electric pressure converter DC/DC is synchronous to storage capacitor C
Electricity, so as to maintain the voltage on the storage capacitor C more than the preset value, once control first to open by processor unit 112
Close S1 and enter on-state and be intended to shut-off and drives electrical apparatus release REL, then storage capacitor C abundant charging can allow in tripping coil 130
The current density of circulation promotes magnetic core to produce sufficiently strong magnetic force to promote electrical apparatus release REL to perform shut-off action.
Referring to Fig. 2, the first capacitor C capacitance characteristic can reduce the energy of electric capacity relative to the scheme of prior art
Density requirements, need not because above scheme can provide the ability that sparks of enough voltage tolerances and more high speed
The exigent energy density as prior art, and capacitance characteristic of the prior art has relative to the first capacitor C
The energy density and power density of requirements at the higher level.In some optional embodiments, although what the first capacitor can be quickly is rapid
Power down lotus, but the first capacitor C charge compensation mechanism determine it electric charge maintenance degree it is longer or say electricity supplement speed
Spend quickly, so also unimportant using cheap electric capacity.
The application scenario such as photovoltaic combiner box, DC cabinet, telecommunications room, communication base station in electric power industry, it is necessary to supervise in real time
Each branch current in straight-flow system is surveyed, and detects in DC circuit whether harmful electric arc produces in real time, once it there are
Electric arc is done harm to, it is necessary to send the trip gear on alarm signal driving breaker at once, disengagement failure loop, effectively prevents electric arc from drawing
The potential safety hazards such as the fire risen.The electronic installation that the application refers to is adapted to these typical occasions.
Above by explanation and accompanying drawing, the exemplary embodiments of the specific structure of embodiment, above-mentioned practicality are given
It is new to propose existing preferred embodiment, but these contents are not intended as limiting to.For a person skilled in the art, read
After reading described above, various changes and modifications undoubtedly will be evident.Therefore, appended claims, which should be regarded as, covers this
The true intention of utility model and whole variations and modifications of scope.Any and all model of equal value in Claims scope
Enclose and content, be all considered as still belonging in intention and scope of the present utility model.
Claims (10)
1. a kind of electronic installation for being used to drive electrical apparatus release, it is characterised in that including for providing driving voltage to electrical apparatus release
Storage capacitor, wherein：
One electric pressure converter is used to charge to storage capacitor；
One group of output end for being respectively coupled to storage capacitor both ends corresponds to electrical apparatus release offer voltage；
One first switch is connected between one end of storage capacitor and an output end；
The both ends of storage capacitor are connected in parallel on after one load and a second switch series connection again.
2. the electronic installation according to claim 1 for being used to drive electrical apparatus release, it is characterised in that also including a processor
Unit, exported after the direct current of reception is carried out into voltage conversion for driving voltage converter to storage capacitor.
3. the electronic installation according to claim 1 for being used to drive electrical apparatus release, it is characterised in that also including a processor
Unit, for driving turning on and off for the first and second switches.
4. the electronic installation according to claim 3 for being used to drive electrical apparatus release, it is characterised in that do not driving electrical apparatus release to close
Disconnected period, the processor unit control first switch enter off state；Only closed in electronic installation driving electrical apparatus release
Disconnected period, the processor unit just control first switch to connect.
5. the electronic installation according to claim 3 for being used to drive electrical apparatus release, it is characterised in that the electronic installation is controlling
First switch is intended to before driving electrical apparatus release shut-off in an ON state, is first entered by processor unit control second switch and connect
Logical state is thereby charged for load supplying and from the electric pressure converter to storage capacitor simultaneously.
6. the electronic installation according to claim 5 for being used to drive electrical apparatus release, it is characterised in that do not driving electrical apparatus release to close
Disconnected period, the processor unit control second switch enter off state.
7. the electronic installation according to claim 1 for being used to drive electrical apparatus release, it is characterised in that the storage capacitor is electricity
Solve electric capacity.
8. the electronic installation according to claim 1 for being used to drive electrical apparatus release, it is characterised in that be turned off in first switch
The period for not driving electrical apparatus release to turn off, processor unit are periodically detected the voltage on the storage capacitor, in energy storage electricity
Second switch can be controlled to connect when voltage is power-down to less than preset value in appearance, so as to maintain the voltage on the storage capacitor pre-
If more than value.
9. according to claim 1 be used to drive the electronic installation of electrical apparatus release, it is characterised in that the electric pressure converter is
BUCK or BOOST or BUCK-BOOST converters.
10. the electronic installation according to claim 1 for being used to drive electrical apparatus release, it is characterised in that the load is resistance
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720374781.XU CN206650043U (en) | 2017-04-11 | 2017-04-11 | For driving the electronic installation of electrical apparatus release |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720374781.XU CN206650043U (en) | 2017-04-11 | 2017-04-11 | For driving the electronic installation of electrical apparatus release |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206650043U true CN206650043U (en) | 2017-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720374781.XU Active CN206650043U (en) | 2017-04-11 | 2017-04-11 | For driving the electronic installation of electrical apparatus release |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108206504A (en) * | 2018-02-06 | 2018-06-26 | 浙江辉弘光能股份有限公司 | Distributed photovoltaic power generation station earth leakage protective device |
| CN110277282A (en) * | 2019-06-28 | 2019-09-24 | 张爱华 | A kind of open frame circuit breaker of the scale segmentation protection based on Pyromagnetic release armature |
-
2017
- 2017-04-11 CN CN201720374781.XU patent/CN206650043U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108206504A (en) * | 2018-02-06 | 2018-06-26 | 浙江辉弘光能股份有限公司 | Distributed photovoltaic power generation station earth leakage protective device |
| CN110277282A (en) * | 2019-06-28 | 2019-09-24 | 张爱华 | A kind of open frame circuit breaker of the scale segmentation protection based on Pyromagnetic release armature |
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