CN106357009A - Self-powered supply unit used for electric power device state detection sensor - Google Patents
Self-powered supply unit used for electric power device state detection sensor Download PDFInfo
- Publication number
- CN106357009A CN106357009A CN201610928350.3A CN201610928350A CN106357009A CN 106357009 A CN106357009 A CN 106357009A CN 201610928350 A CN201610928350 A CN 201610928350A CN 106357009 A CN106357009 A CN 106357009A
- Authority
- CN
- China
- Prior art keywords
- energy
- voltage
- unit
- electric
- current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a self-powered supply unit used for an electric power device state detection sensor, comprising a voltage power acquisition unit, a current power acquisition unit, an energy storage unit and an energy storage control unit, wherein the voltage power acquisition unit and the current power acquisition unit respectively or simultaneously acquire energy of high voltage and low current from the electric device; through the energy storage unit, low voltage and high current are converted and electric energy is stored; when the electric power device state detection sensor requires electric energy to operate, the energy storage control unit controls the energy storage unit to provide electric energy to the electric power device state detection sensor; and when the electric quantity of the energy storage unit is insufficient, the energy storage control unit timely closes a discharge circuit, and the energy storage control unit continues to store energy. The self-powered supply unit in the invention is low in cost and long in service life, and can provide reliable energy supply to sensors.
Description
Technical field
The present invention relates to a kind of self-energizing supply unit for status of electric power detection sensor, belong to power equipment
State inspection field.
Background technology
State Grid Corporation of China proposes strong intelligent grid, that is, with extra-high voltage grid as bulk transmission grid, electric network coordination at different levels sends out
Based on the strong rack of exhibition, with communication information platform for supporting, there is informationization, automatization, interactive feature, comprise electric power
The generating of system, transmission of electricity, power transformation, distribution, electricity consumption and scheduling six big links, cover all electric pressures, realize " flow of power, letter
The very high integrity of breath stream, Business Stream " merges, and has strong reliable, economical and efficient, clean environment firendly, transparent opening and close friend mutual
The modern power network of dynamic intension.
The core of intelligent grid is that Internet communication technology and existing network system are interconnected to realize the intelligence of electrical network
Change, cover the collection of data, data transfer, information integration, optimize, represent 5 aspects, therefore, sensing coupling, communication, control
It is in the form not changing existing electrical network and Operation of Electric Systems pattern Deng new technique, also improving constantly and optimizing electrical network fortune
Row state and developing direction.
Sensor is the key element of intelligent grid.Need big quantity sensor to be installed in electrical network so that acquisition system state
Parameter and equipment " healthy " situation, and collected real time information and resource management, simulation and the process integration such as emulation, will
Valid data are delivered to control room, to improve operation and the efficiency of electrical network.
Sensor type is varied, apply in engineering more have following several: traditional electric power mutual-inductor takes station
Electricity consumption by high pressure, high current conversion become low pressure, small current, extract voltage, electric current, power, frequency, power factor (PF), phase angle,
The physical parameters such as harmonic wave；Another sensor relies on external cell directly to power and realizes the work of sensor, including equipment
Rfid label, gps alignment sensor, temperature sensor, Leakage Current sensor, vibrating sensor etc.；Fibre Optical Sensor utilizes
The good characteristic of optical fiber insulation characterisitic converts electrical signals to optical signal, is sent to low-pressure side by optical cable and carries out data acquisition
's；Also the principle irradiating photovoltaic cell generation electric energy using laser is had to supply energy for sensor.
Stand with power supply power supply mode, needing to lay special current supply circuit, and generally single take voltage or electric current is made
For energy source, power supply reliability is low.
Battery power supply mode is affected larger, according to China's standard, valve controlled sealed lead-acid accumulator electric discharge by extraneous factor
When, if temperature is not standard temperature (25 DEG C), need by actual measurement electricity be converted into standard actual electricity it may be assumed that
Ce=cr/ [1+k (t-25)]
In formula: the actual electricity of ce；
Battery discharge capacity under cr non-standard temperature；
The ambient temperature of t electric discharge；
K temperature coefficient；K=0.006/ DEG C during 10 hour rate capacity test, k=during 3 hour rate capacity test
0.008/ DEG C, k=0.0085/ DEG C during 2 hour rate capacity test, k=0.01/ DEG C during 1 hour rate capacity test.
Analysis can obtain valve controlled sealed lead-acid accumulator optimum working temperature and be 25 DEG C.Temperature more than 25 DEG C after capacity open again
Begin drastically to reduce.After 60 DEG C, the life-span of battery is greatly reduced.In addition under high current operating mode, device temperature is very high, this for
Sensor using battery is also very fatal, and high temperature can cause battery gently then to reduce service life, heavy then cause battery leakage very
To blast.Liquid in battery is good conductor, and leakage, blast all can cause high voltage equipment insulation to damage and cause short trouble.
Fibre Optical Sensor key link is the conversion sensor that physical quantity is converted to optical signal, the photoelectricity of most of physical quantity
Sensor is not also succeeded in developing, and the acquisition system cost of photoelectric conversion sensor is higher, and general equipment is difficult to big rule
Mould uses.What engineer applied was more has temperature grating sensor and vibration optical sensor.There is a method in which using traditional biography
Signal is collected in sense, then converts electrical signals to optical signal by optical-electrical converter, is sent to low-pressure side by optical fiber.But in height
Pressure side still needs power supply to support sensor and optical-electrical converter work.
Convert laser light into electric energy, for working sensor, principle is to change electricity by the high power laser pipe of low-pressure side
For laser beam, high-pressure side is sent to by optical fiber.There are LASER Discharge Tube and photovoltaic cell in high-pressure side, and laser is radiated at photovoltaic cell
On, battery converts light to unidirectional current and uses for relevant device, its power is less, is typically provided that 5v, 100ma both 500mw
Power.The subject matter that it exists is: one is that cost is high, and its purchase cost is often ten times even two of sensor purchase cost
Ten times, economic implications are had been out；Two is to install to be difficult, and from high-pressure side, optical fiber cloth is put into low-pressure side, quantities is very huge
Greatly, due to being laid in equipment appearance, easily damaged；Three is that power is low, and maximum can only provide the power of 5v, 100ma, less than big
The power requirement of operative sensor, may be only available for fraction sensor.
Content of the invention
In view of the shortcomings of the prior art, the present invention provide a kind of low cost, long working life for power equipment
The self-energizing supply unit of state detection sensor, provides reliable energy supply for sensor.
To achieve these goals, the present invention is to realize by the following technical solutions:
A kind of self-energizing supply unit for status of electric power detection sensor of the present invention, taking including voltage can be single
Unit (structure is one layer of aluminium foil film of insulation parcel, as coupled voltages pole plate, and conventional capacitance coupling plates indifference, thus
The voltage of the present invention take can unit repeat no more), current energy-taking unit, energy-storage units and energy storage control unit；Described voltage takes
Unit, current energy-taking unit separately or concurrently can obtain high voltage, low current energy from power equipment, by described energy-storage units
Realize low-voltage, high current conversion, and carry out power storage；When the operating of status of electric power detection sensor needs electric energy,
Described energy storage control unit controls energy-storage units to provide electric energy for status of electric power detection sensor；When described energy-storage units
During not enough power supply, described energy storage control unit stops electric discharge in time, and (discharge loop is exactly the connecting line of sensor and energy-storage units
Road, is exactly both threads in simple terms, and energy storage control unit has on-off action in itself, controls this circuit on-off, and then realizes electric discharge
The break-make in loop), described energy storage control unit proceeds energy storage.
Above-mentioned voltage takes the method that energy unit, current energy-taking unit separately or concurrently charge to energy-storage units as follows: described
Voltage takes energy unit and current energy-taking unit, after being coupled to alternating voltage and electric current, first carries out halfwave rectifier, then through stabilivolt
Adjust output voltage amplitude, finally respectively after diode-isolated, access described energy-storage units.
Above-mentioned energy-storage units include the one of stabilivolt, the filter capacitor being connected in parallel on described stabilivolt two ends and filter capacitor
Electric capacity that the inductance that the switching tube that individual pole plate is connected is in series with the switching tube other end is connected with the inductance other end, parallel connection
In the storage capacitor at electric capacity two ends, another pole plate of described electric capacity is connected with another pole plate of filter capacitor, described electricity
Sense forms lc circuit with electric capacity；Described switching tube is formed by the cascade of two-stage bidirectional high pressure diac, poor by both end voltage
Control conducting；Take the voltage of energy unit, the acquisition of current energy-taking unit by described voltage stabilizing tube steady voltage, and to described filtered electrical
Capacity charge, after described both ends of filter capacitor voltage reaches rated voltage, described switching tube conducting, subsequently pass through described lc circuit
Energy storage is carried out to storage capacitor.
The diversion belt that above-mentioned current energy-taking unit includes iron core and is spirally wrapped on iron core.
Above-mentioned iron core is the flexible ferromagnetic material being sintered into using nickel-manganese-zinc-ferrum；The length of iron core is 20cm, width is
2cm, thickness are 2mm；The width of described diversion belt is 4mm, thickness is 3mm, is wound around and is spaced apart 2mm.
Above-mentioned energy storage control unit include low pressure difference linear voltage regulator, voltage checking chip, the first diode d1～d3 and
Second diode d4；No. 1 pin of described low pressure difference linear voltage regulator is voltage input end, and No. 3 pins are voltage output end, 2
Number pin is to control foot, No. 4 pins ground connection；When No. 1 pin voltage of described voltage checking chip is more than setting value, No. 2 pipes
Foot exports high level, and when No. 1 pin voltage is less than setting value, No. 2 pins export low level, No. 3 pin ground connection；Described first
Diode d1～d3 is connected between No. 1 pin of low pressure difference linear voltage regulator and No. 1 pin of voltage checking chip, described low
No. 2 pins of pressure reduction linear voltage regulator are connected with No. 2 pins of voltage checking chip, and described second diode d4 is connected to low
Between No. 3 pins of pressure reduction linear voltage regulator and No. 1 pin of voltage checking chip.
Above-mentioned first diode d1～d3 specifically uses silicon diode, and the second diode d4 specifically uses germanium two
Pole pipe.
Electromagnetic field using high-tension electricity equipment itself obtains energy, has voltage, two sets of acquisitions of electric current of parallel running
The system of energy, both can be using isolated coupling electrode principle collection voltages energy under high-voltage case, can be in high current situation
Obtain energy according to electromagnetic induction principle from the high current that equipment flows through, two take and can unit work independently, and do not interfere with each other, from
And be that high pressure equipment sensor provides regulated power.Its core cell includes:
Voltage takes energy unit, current energy-taking unit, energy-storage units and energy storage control unit
First, voltage takes energy unit
The nucleus equipment that isolated coupling electrode obtains electric field energy from high voltage electric field is that isolated coupling electrode isolates coupling
Electrode, it can be exchanged into electric energy after getting space charge, and now obtain is high voltage, low current signal.
The conductor being in electric field obtains unit potential institute subfam. Spiraeoideae, the geometric properties (size and shape) of size and conductor
Relevant.If isolated coupling electrode carried charge is q, potential is v, and experiment proves q ∝ v, i.e. q=cv.C is electric capacity, unit farad, it
Represent that conductor obtains unit potential institute subfam. Spiraeoideae, size is relevant with the geometric properties (size and shape) of conductor.
Aluminum laminated films are laid in the flexible iron core surface of current energy-taking unit, and with insulation parcel it is ensured that aluminium foil film with
Electric insulation is realized between iron core, power equipment.This thin film is the isolated coupling electrode that voltage takes energy unit, will by wire
The electric energy being coupled on thin film is transferred to subsequent treatment module.
2nd, electric current acquiring unit has a following key link:
Using on conventional current transformer basis, the present invention has two technological break-throughs:
1st, flexible iron core
Engineer applied result proves, when this iron core thickness is 1mm, when the electric current in power equipment only needs 12a, iron core
It is rapidly saturated it is ensured that this unit can saturation rapidly in normal work, it is to avoid the abnormal heating under high current operating mode.
2nd, water conservancy diversion copper cash is encapsulated on iron core
Using printed circuit board process, the copper diversion belt for electromagnetic coupled is spirally wound around on iron core, this is led
Stream bandwidth 4mm, thick 3mm, are spaced 2mm, and are packaged.
Take above-mentioned measure so that this current energy-taking unit volume is little, perfect heat-dissipating, softness is similar with plastics,
Can easily be wrapped on equipment.
3rd, energy-storage units
1st, switching tube
Switching tube is one of the technology of the present invention core it is achieved that high-tension electricity, weak current are converted to low-voltage, high current.
The present invention to complete the effect of switching tube using two-stage bidirectional high pressure diac.When the voltage reserve of electric capacity reaches specified electricity
After pressure, high pressure diac turns on.Circuit carries out energy storage, blood pressure lowering by lc circuit to storage capacitor.Realize high voltage
(220v～3000v), weak current is converted to the DC source of direct current 10v, 200ma, thus reaching the effect of Switching Power Supply.
2nd, energy-storage travelling wave tube
Electricity is transported to energy-storage units by electric current power taking and voltage electricity getting device, and general circuit can consider chargeable lithium electricity
Pond or super capacitor or other electric capacity.
If device needs to be operated in 10kv electric pressure, from paster solid tantalum electric capacity as storage capacitor.Because 10kv
The power limited that electric pressure obtains, if selecting rechargeable battery or super capacitor, its Leakage Current is very big, when can cause energy storage
Between very long, the in addition restricted lifetime of rechargeable battery, if can affect service life of equipment from rechargeable battery.
It is to reveal very little, only 1ua from tantalum electric capacity one；Two is because tantalum electric capacity does not have electrolyte, so fault rate
Very low, the life-span is permanent.
4th, energy storage control unit
Voltage control valve is served as using low pressure difference linear voltage regulator (ldo, voltage control chip), that is, when voltage reserve is to relatively
During high level, open low pressure difference linear voltage regulator, allow load obtain power supply.Close low pressure difference linearity when storage element energy is not enough
Manostat, allows load lose power supply, so that energy-storage units is charged.
Purpose from voltage control chip is more preferable energy storage, improves tank voltage threshold.Such as equipment normal work
When 3.3v, voltage chips may require that ldo (low pressure difference linear voltage regulator) chip is just opened in energy storage after reaching 5.8v.When voltage is less than
After 3.3v, control chip should turn off ldo chip.So increased voltage feedback circuit in circuit.
The present invention is compared with traditional supply unit and possesses following advantage:
1. long working life.Lithium battery the most long-acting only has 5 years about service lifes.And the present invention can reach and once
The identical service life of equipment, provides reliable energy supply for related sensor, and power is high；
2. both energy can be obtained by voltage, also energy can be obtained by electric current.Simple energy taken using current transformer
Method is not it is impossible to have the operating mode of electric current in reply circuit, and the present invention can be with this problem of effectively solving；
3. it is operated in high pressure isoelectric level pattern, do not insulate hidden danger.It is arranged on high pressure equipment, do not destroy insulation and electric field
Distribution.Whole device volume is very compact, arbitrarily can be arranged according to equipment profile.Do not have high-low pressure to get in touch with, be operated in wait electric
Bit pattern, therefore do not insulate hidden danger, and is easily installed.
4. cheap, it is easy to promote.The present invention relates to components and parts all from ripe device, simply device is revealed
Electric current, working life have strict demand.So apparatus cost is cheap, its cost only has the one thousandth of laser energy taking device.
Brief description
Fig. 1 is high pressure equipment sensor self-energizing supply unit schematic diagram；
Fig. 2 obtains energy unit logic chart for voltage；
Fig. 3 is energy-storage units schematic diagram；
Fig. 4 is energy storage control unit schematic diagram (ldo is low pressure difference linear voltage regulator).
Specific embodiment
Technological means, creation characteristic, reached purpose and effect for making the present invention realize are easy to understand, with reference to
Specific embodiment, is expanded on further the present invention.
The present invention provides a kind of self-energizing supply unit for status of electric power detection sensor, and this device is using high
The electromagnetic field of voltage electrical equipment itself obtains energy, has voltage, the system of two sets of acquisition electric energy of electric current of parallel running, both may be used
Utilize coupled capacitor principle according to the voltage acquisition energy of equipment under high-voltage case, can be in high current situation according to electromagnetism sense
The electric current that principle flows through from equipment is answered to obtain energy, thus supplying energy for status of electric power detection sensor.
Energy-storage units are taken for voltage with energy storage control unit can unit and current energy-taking units shared unit.Energy-storage units will
Take the energy reserve that energy unit obtains to get up to use for sensor.When energy storage control unit needs energy when sensor operation,
Open control unit in time, energy-storage units will provide electric energy for sensor；When the not enough power supply of energy storage device, energy storage controls single
Unit's closing control unit in time, energy storage control unit proceeds energy storage.
The present invention comprehensively utilizes two sets of energy capturing systems, extends the power work life-span so that the work longevity of sensor
Life is more than equipment interruption maintenance gap periods, improves power supply reliability；And do not have high-low pressure to get in touch with, it is operated in isoelectric level mould
Formula, eliminates insulation hidden danger, cheap it is achieved that the economic, reliable of sensor electric energy is supplied, practical application is had good
Directive significance.
High pressure equipment asks for power supply schematic diagram as shown in figure 1, it will be seen from figure 1 that the present invention is by four part groups
Become it may be assumed that voltage takes energy unit, current energy-taking unit, energy-storage units and energy storage control unit.Separately below from aforementioned four part
Power supply that high pressure equipment sensor is asked for is introduced, although this device is to monitor for power system high pressure equipment to pass
Sensor proposes, but tool is general.
The core of the present invention is the voltage acquisition energy using coupled capacitor principle according to equipment, former according to electromagnetic induction
Reason, the electric current flowing through from equipment obtains energy.This device has voltage, the system parallel running of two sets of acquisition energy of electric current, that is,
Segregated capacitive principle can be utilized according to the voltage acquisition energy of equipment under high-voltage case, can be in high current situation according to electromagnetism
The electric current that principle of induction flows through from equipment obtains energy, referring to Fig. 1.
First, voltage takes energy unit
There is powerful high voltage electric field in high pressure equipment, obtain the core that energy is this programme from high voltage electric field.Popular
Say the means being exactly to rely on voltage to obtain energy.The nucleus equipment obtaining electric field energy is isolated coupling electrode.If coupled capacitor
Body carried charge is q, and potential is v, and experiment proves q ∝ v, i.e. q=cv.C is electric capacity, unit farad, and it represents that conductor obtains unit
Potential institute subfam. Spiraeoideae, size is relevant with the geometric properties (size and shape) of conductor.
Hypothesis coupling capacitor plates are spherical conductor, and radius is r, and with electricity q, then potential is:
Then electric capacity:
Coupled capacitor body can be exchanged into electric energy after getting electric charge, and now capacitance body obtains high voltage, weak current.Electricity
The residing electric pressure of volume itself is relevant with volume itself and radius, according to engineering experience, the orphan of a matchbox size
Vertical coupling electrode under 10kv electric pressure, voltage in 4kv, current value about 10ua, power is about 0.04w.If
It is 110kv, then about in 60kv, electric current is about 10ua to the voltage that capacitance body obtains, power is about 0.6w.
Traditional switching tube is pressure only 1000v, the most fatal is that power consumption is larger, and static leakage electric power is all in 1ma.
Side circuit but cannot be realized with common switching tube it is necessary to the circuit design using uniqueness is just permissible.
Energy-storage units are one of the technology of the present invention cores it is achieved that high-tension electricity, weak current are converted to low-voltage, greatly electricity
Stream.The present invention to complete the effect of switching tube using bidirectional high-pressure diac.When the voltage reserve of electric capacity reaches specified electricity
After pressure, high pressure diac turns on.Circuit carries out energy storage, blood pressure lowering by lc circuit to storage capacitor.Realize high voltage
(220v～3000v), weak current be converted to direct current 10v, 200ma about DC source, thus reaching the work of Switching Power Supply
With.
As shown in figure 3, in figure: 1, stabilivolt；2nd, filter capacitor；3rd, switching tube；4 inductance, 5 electric capacity composition lc circuit；6、
Storage capacitor (tantalum electric capacity).Wherein, switching tube is formed by the cascade of two-stage high pressure diac, is controlled by both end voltage difference and leads
Logical.
First pass through the voltage that stabilivolt 1 burning voltage takes energy unit, current energy-taking unit to obtain, and to filter capacitor 2
Charge.After filter capacitor 2 both end voltage reaches rated voltage, switching tube 3 turns on, and subsequently passes through lc circuit to storage capacitor 6
Carry out energy storage.By high voltage (220v～3000v), weak current be converted to direct current 5v, 20ma about DC source.Thus reaching
Effect to Switching Power Supply.
The energy-storage units scheme of the present invention possesses advantages below:
● power consumption is extremely low.Number of devices is few, and all from low power dissipation design.The oneself power consumption of device is extremely low.Static Electro
Stream almost 0, maximum is less than 1.4ua.
● reliability is high.Conventional electronics weakest link is Switching Power Supply, because the component number of Switching Power Supply
More, and be all operated in high current, high voltage, under altofrequency situation, be easiest to break down.The present invention is using simply double
Both constituted simple Switching Power Supply to high pressure diac cooperation electric capacity, inductance.Therefore reliability is high.Life-span is that tradition is opened
Close tens times of power supply；
● extremely low cost.Constitute device less, and be all common components and parts, therefore with low cost, possess good
Promotional value；
2nd, current energy-taking unit
Current energy-taking unit utilizes conventional current transformer principle, but has two prominent technological cores.Technological core
One be by traditional current transformer do very compact, technological core two be iron core should be able to saturation rapidly, and avoid high current
Generate heat under operating mode.
Processing technology unshakable in one's determination avoids that conventional current transformer is bulky, the problem of installation difficulty.The present invention is using becoming
Be divided into the ferromagnetic material of nickel-manganese-zinc-ferrum, make length be 20cm, width be 2cm, thickness be 2mm flexible iron core, its magnetic conduction
Rate be 1000 times of traditional silicon steel so that this unit volume is less, be same capacity conventional current transformer volume 1/100.
This material is flexible material, softness similar with plastics in that context it may be convenient to be wrapped on equipment；It is provided simultaneously with good magnetic flux
Characteristic, is 1000 times of traditional silicon steel it is also possible to be rapidly saturated.Engineering experience proves, the iron core thickness of this invention only has 2mm,
Electric current only needs 12a can be rapidly saturated.
After getting electric current, enter energy-storage units, this circuit and voltage induced partial common circuit after over commutation, all divide
Do not transmit its energy to energy-storage units.
3rd, energy-storage units, energy storage control unit
It is that voltage obtains and current conversion unit sharing unit that energy storage and energy storage control.Voltage obtains energy unit logic chart
As shown in Figure 2.Energy reserve after changing is got up and uses for sensor by energy-storage units；Energy storage control unit is similar to the lock of dam
Door, tricklet deposit is got up, starting gate when sensor needs, the timely closed shutter when energy storage device is not enough
Proceed energy storage.
1st, energy-storage units
Electric current obtains electric energy and voltage takes and electricity can be transported to unit energy-storage module, and general circuit can consider chargeable
Lithium battery or super capacitor or other electric capacity.If device needs to be operated in 10kv electric pressure it is proposed that energy-storage module is selected
Tantalum electric capacity.Because the power limited that 10kv electric pressure obtains, if selecting rechargeable battery or super capacitor, its Leakage Current is very
Greatly, energy storage time can be caused very long, in addition the restricted lifetime of rechargeable battery, if equipment can be affected from rechargeable battery use the longevity
Life.It is to reveal very little, only 1ua from first reason of tantalum electric capacity；Second reason is the institute because tantalum electric capacity does not have electrolyte
Very low with fault rate, the life-span is permanent.
2nd, energy storage control unit
The voltage of energy-storage travelling wave tube slowly rises to loaded work piece voltage from " zero " needs a longer time course.As
Fruit does not carry out voltage control and the hunting of load can be caused to work.The voltage causing energy-storage travelling wave tube fluctuates in standard value, and load is no
Method normal work.It is thus desirable to a control circuit obtains enough energy to guarantee to load.
Energy storage control unit schematic diagram as shown in figure 4, this control circuit control ldo chip (low pressure difference linear voltage regulator),
When voltage reserve is to high value, open ldo, allow load obtain power supply.Close ldo when storage element energy is not enough.
1) description to Fig. 4
● ldo is low-pressure linear manostat.1 pin is voltage input end.Allow input voltage range 3.3～9v；3 pins
For voltage output end.Output voltage is 3.3v；2 pins are to control foot.When input high level, ldo work, works as input low level
When ldo close.
● d1～d3 is silicon diode, and d4 is 0.3v for germanium diode pressure drop.
● ht2027 2.7v voltage checking chip.When 1 pin voltage is more than 2.7v, 2 pin output high level 2.7v,
When 1 pin voltage is less than 2.7v, 2 pin output low levels.
2) the specific operation principle of this circuit.
voutLoaded work piece voltage is 3.3v below.The operating voltage range of vin is 0～5.6v.If this controls electricity
Road, voutLoad will be unable to work below.The energy at vin end is very little, can only provide very faint electric energy.Faint electric energy
It is stored in electric capacity.The voltage that voltage lifting step by step can work to chip, chip is started working corresponding but without completing
Programmed logic, system voltage is drawn to collapse, the state that as little as chip cannot work.But now voltage is simply slightly lower than cleaning door
Sill voltage, so chip is started working quickly again.But the limited energy of electric capacity storage, and collapsed by drawing.So repeatedly.In order to solve
This this circuit of problem thus produces.Its core purpose is exactly to allow lay in some electric energy electric capacity more.When capacitance voltage is less than one
Energy supply loop is closed when setting value.
Due to there being storage capacitor, input voltage is stepped up at vin end, when reaching 4.8v (tri- diodes of ht70272.7v+
Pn saves 3*0.7=4.8v).Now ht7027 2 pins output high level ldo start working vout output 3.3v.Due to load
Capacitance voltage is caused to gradually reduce.The control foot high level of ldo after 4.8v, cannot be maintained by d1～d3, need
D4 diode is wanted to complete Voltage Feedback.Vout pressure drop after d4 is maintained to 3v.2 pins of ht7027 export height always
Level.Ldo continuous firing until vin be less than 3.3v after, ldo automatic cut-off.Now electric capacity starts energy storage.
Purpose from voltage control chip is more preferable energy storage in this circuit, improves tank voltage threshold.For example
3.3v during equipment normal work, voltage chips may require that energy storage just opens ldo chip after reaching 5.8v.When voltage is less than 3.3v
Afterwards, control chip should turn off ldo chip.So increased voltage feedback circuit in circuit.
Ldo has played the effect of voltage control valve, which obviates energy deficiency and causes equipment oscillatory work.For example energy storage is firm
Just reach equipment running voltage, equipment is started working, because energy reserve is not enough, running voltage is pulled low, less than equipment
Normal operational voltage value minimum, causes equipment to quit work.Device starts energy storage again, and energy storage just reaches running voltage, if
Standby start working again.Repeatedly so cause to vibrate.
The present invention is compared with traditional power technology and possesses following advantage:
1. long working life.Lithium battery the most long-acting only has 5 years about service lifes.And the present invention can reach and once
The identical service life of equipment.There is provided reliable energy supply for related sensor；
2. both energy can be obtained by voltage, also energy can be obtained by electric current.Current transformer takes can cannot tackle electricity
There is no the operating mode of electric current in road, and the present invention can be with this problem of effectively solving；
3. it is operated in high pressure isoelectric level pattern, do not insulate hidden danger.It is arranged on high pressure equipment, do not destroy insulation and electric field
Distribution.Whole device volume is very compact, arbitrarily can be arranged according to equipment profile.Do not have high-low pressure to get in touch with, be operated in wait electric
Bit pattern, therefore do not insulate hidden danger.
4. cheap, it is easy to promote.The present invention relates to components and parts all from ripe device, simply device is revealed
Electric current, working life have strict demand.So apparatus cost is cheap, its cost only has the one thousandth of laser energy taking device.
Ultimate principle and principal character and the advantages of the present invention of the present invention have been shown and described above.The technology of the industry
, it should be appreciated that the present invention is not restricted to the described embodiments, the simply explanation described in above-described embodiment and description is originally for personnel
The principle of invention, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, these changes
Change and improvement both falls within scope of the claimed invention.Claimed scope by appending claims and its
Equivalent thereof.
Claims (7)
1. a kind of self-energizing supply unit for status of electric power detection sensor takes energy it is characterised in that including voltage
Unit, current energy-taking unit, energy-storage units and energy storage control unit；
Described voltage takes and unit, current energy-taking unit separately or concurrently can obtain high voltage, low current energy from power equipment, leads to
Cross described energy-storage units and realize low-voltage, high current conversion, and carry out power storage；
When the operating of status of electric power detection sensor needs electric energy, it is electric power that described energy storage control unit controls energy-storage units
Condition Detection sensor provides electric energy；When the not enough power supply of described energy-storage units, described energy storage control unit is stopped in time
Only discharge, described energy storage control unit proceeds energy storage.
2. the self-energizing supply unit for status of electric power detection sensor according to claim 1, its feature exists
In described voltage takes the method that energy unit, current energy-taking unit separately or concurrently charge to energy-storage units as follows:
Described voltage takes energy unit and current energy-taking unit, after being coupled to alternating voltage and electric current, first carries out halfwave rectifier, then warp
Cross stabilivolt and adjust output voltage amplitude, finally respectively after diode-isolated, access described energy-storage units.
3. the self-energizing supply unit for status of electric power detection sensor according to claim 1, its feature exists
In described energy-storage units include a pole plate of stabilivolt, the filter capacitor being connected in parallel on described stabilivolt two ends and filter capacitor
Electric capacity that the inductance that the switching tube being connected is in series with the switching tube other end is connected with the inductance other end, it is connected in parallel on electric capacity
The storage capacitor at two ends, another pole plate of described electric capacity is connected with another pole plate of filter capacitor, described inductance with electricity
Hold composition lc circuit；
Described switching tube is formed by the cascade of two-stage bidirectional high pressure diac, controls conducting by both end voltage difference；
Take the voltage of energy unit, the acquisition of current energy-taking unit by described voltage stabilizing tube steady voltage, and fill to described filter capacitor
Electricity, after described both ends of filter capacitor voltage reaches rated voltage, described switching tube conducting, subsequently by described lc circuit to storage
Energy storage can be carried out by electric capacity.
4. the self-energizing supply unit for status of electric power detection sensor according to claim 1, its feature exists
In the diversion belt that described current energy-taking unit includes iron core and is spirally wrapped on iron core.
5. the self-energizing supply unit for status of electric power detection sensor according to claim 4, its feature exists
In described iron core is the flexible ferromagnetic material being sintered into using nickel-manganese-zinc-ferrum；The length of iron core is 20cm, and width is 2cm,
Thickness is 2mm；
The width of described diversion belt is 4mm, and thickness is 3mm；Winding is spaced apart 2mm.
6. the self-energizing supply unit for status of electric power detection sensor according to claim 1, its feature exists
In described energy storage control unit includes low pressure difference linear voltage regulator, voltage checking chip, the first diode d1～d3 and the two or two
Pole pipe d4；
No. 1 pin of described low pressure difference linear voltage regulator is voltage input end, and No. 3 pins are voltage output end, and No. 2 pins are control
Foot processed, No. 4 pin ground connection；
When No. 1 pin voltage of described voltage checking chip is more than setting value, No. 2 pins export high level, when No. 1 pin electricity
When pressure is less than setting value, No. 2 pins export low level, No. 3 pin ground connection；
Described first diode d1～d3 is connected on No. 1 pin of low pressure difference linear voltage regulator and No. 1 pipe of voltage checking chip
Between foot, No. 2 pins of described low pressure difference linear voltage regulator are connected with No. 2 pins of voltage checking chip, and the described 2nd 2
Pole pipe d4 is connected between No. 3 pins of low pressure difference linear voltage regulator and No. 1 pin of voltage checking chip.
7. the self-energizing supply unit for status of electric power detection sensor according to claim 6, its feature exists
In described first diode d1～d3 specifically uses silicon diode, and the second diode d4 specifically uses germanium diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610928350.3A CN106357009B (en) | 2016-10-31 | 2016-10-31 | A kind of self-energizing supply unit for status of electric power detection sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610928350.3A CN106357009B (en) | 2016-10-31 | 2016-10-31 | A kind of self-energizing supply unit for status of electric power detection sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106357009A true CN106357009A (en) | 2017-01-25 |
| CN106357009B CN106357009B (en) | 2018-10-12 |
Family
ID=57864809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610928350.3A Active CN106357009B (en) | 2016-10-31 | 2016-10-31 | A kind of self-energizing supply unit for status of electric power detection sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106357009B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107492942A (en) * | 2017-08-21 | 2017-12-19 | 广东电网有限责任公司云浮供电局 | A kind of device and application process that electric energy is obtained based on transmission line of electricity step voltage |
| CN107707206A (en) * | 2017-09-28 | 2018-02-16 | 广东欧珀移动通信有限公司 | Radio frequency front-end device, temprature control method and terminal |
| CN108039780A (en) * | 2018-01-30 | 2018-05-15 | 国网江苏省电力有限公司电力科学研究院 | A kind of laser power supply system for substation |
| CN109412212A (en) * | 2018-09-29 | 2019-03-01 | 国网电力科学研究院武汉南瑞有限责任公司 | A kind of tandem type high voltage electric field inductive power supply circuit of two-stage variation |
| CN109494886A (en) * | 2018-12-28 | 2019-03-19 | 国网山西省电力公司晋中供电公司 | A kind of wireless energy supply system based on electric field induction flat plate array |
| CN110726915A (en) * | 2019-08-28 | 2020-01-24 | 重庆大学 | Modular multilevel converter valve submodule IGBT fault detection system and method |
| CN114325029A (en) * | 2021-12-29 | 2022-04-12 | 国网上海市电力公司 | Full-electric current transformer self-energy-taking circuit and current transformer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200973131Y (en) * | 2006-10-26 | 2007-11-07 | 梁明 | Electromagnetic induction communication power supply device |
| EP2107663A1 (en) * | 2007-01-29 | 2009-10-07 | Panasonic Corporation | Power source system, power supply control method for the power source system, power supply control program for the power source system, and computer-readable recording medium with recorded power supply control program |
| CN104319910A (en) * | 2014-11-06 | 2015-01-28 | 国家电网公司 | Power source energy taking circuit based on high-voltage power transmission line |
| CN204290339U (en) * | 2014-12-05 | 2015-04-22 | 苏州银蕨电力科技有限公司 | A kind of self adaptation energy taking device |
| CN105071653A (en) * | 2015-02-11 | 2015-11-18 | 杜金昌 | High-efficiency electric field induction electricity taking device |
-
2016
- 2016-10-31 CN CN201610928350.3A patent/CN106357009B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200973131Y (en) * | 2006-10-26 | 2007-11-07 | 梁明 | Electromagnetic induction communication power supply device |
| EP2107663A1 (en) * | 2007-01-29 | 2009-10-07 | Panasonic Corporation | Power source system, power supply control method for the power source system, power supply control program for the power source system, and computer-readable recording medium with recorded power supply control program |
| CN104319910A (en) * | 2014-11-06 | 2015-01-28 | 国家电网公司 | Power source energy taking circuit based on high-voltage power transmission line |
| CN204290339U (en) * | 2014-12-05 | 2015-04-22 | 苏州银蕨电力科技有限公司 | A kind of self adaptation energy taking device |
| CN105071653A (en) * | 2015-02-11 | 2015-11-18 | 杜金昌 | High-efficiency electric field induction electricity taking device |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107492942A (en) * | 2017-08-21 | 2017-12-19 | 广东电网有限责任公司云浮供电局 | A kind of device and application process that electric energy is obtained based on transmission line of electricity step voltage |
| CN107707206A (en) * | 2017-09-28 | 2018-02-16 | 广东欧珀移动通信有限公司 | Radio frequency front-end device, temprature control method and terminal |
| CN108039780A (en) * | 2018-01-30 | 2018-05-15 | 国网江苏省电力有限公司电力科学研究院 | A kind of laser power supply system for substation |
| CN108039780B (en) * | 2018-01-30 | 2024-03-08 | 国网江苏省电力有限公司电力科学研究院 | Laser energy supply system for transformer substation |
| CN109412212A (en) * | 2018-09-29 | 2019-03-01 | 国网电力科学研究院武汉南瑞有限责任公司 | A kind of tandem type high voltage electric field inductive power supply circuit of two-stage variation |
| CN109412212B (en) * | 2018-09-29 | 2022-07-15 | 国网电力科学研究院武汉南瑞有限责任公司 | Two-stage-change cascade high-voltage electric field induction power supply circuit |
| CN109494886A (en) * | 2018-12-28 | 2019-03-19 | 国网山西省电力公司晋中供电公司 | A kind of wireless energy supply system based on electric field induction flat plate array |
| CN110726915A (en) * | 2019-08-28 | 2020-01-24 | 重庆大学 | Modular multilevel converter valve submodule IGBT fault detection system and method |
| CN114325029A (en) * | 2021-12-29 | 2022-04-12 | 国网上海市电力公司 | Full-electric current transformer self-energy-taking circuit and current transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106357009B (en) | 2018-10-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106357009B (en) | A kind of self-energizing supply unit for status of electric power detection sensor | |
| CN206135553U (en) | A from draw -out power supply device for power equipment condition detects sensor | |
| CN101216510B (en) | High voltage electric energy direct metered system and method | |
| CN202634316U (en) | Energy taking device based on capacitive voltage divider | |
| CN105093140B (en) | A kind of method and its device of the detection of transformer remanent magnetism and demagnetization | |
| CN201365196Y (en) | Device for collecting power from high-voltage cable | |
| CN101478183A (en) | Apparatus and method for obtaining electricity from high voltage electric cable | |
| CN101753037A (en) | High voltage generation device of medical high-frequency high voltage generator | |
| CN104682451A (en) | Inductive electricity obtaining device of high-voltage transmission line | |
| CN108957292A (en) | A kind of common type of power module testing circuit, system and test method | |
| Qian et al. | Power maximised and anti‐saturation power conditioning circuit for current transformer harvester on overhead lines | |
| Wang et al. | Optimisation design of real‐time wireless power supply system overhead high‐voltage power line | |
| CN106026177B (en) | The power grid"black-start" method of electricity generation system is stored up based on light | |
| CN209264817U (en) | Passive and wireless current sensor based on double-winding current mutual inductor | |
| CN106646271A (en) | Test system for shore power supply | |
| CN103543305B (en) | A kind of power equipment Partial Discharge Detection underdamping ac high voltage generator | |
| CN203911597U (en) | Double loop cable transformer power taking device | |
| CN102522831A (en) | Non-contact electric field type induction power access method and power access apparatus thereof | |
| CN206323149U (en) | A kind of multifunctional photovoltaic parallel DC-to-AC converter and self-built network system | |
| CN104901342A (en) | Capacitor voltage division-based high-voltage electricity taking device | |
| CN201263094Y (en) | Source-fetching device for I/P current | |
| CN203911596U (en) | High voltage cable external wireless power supply acquisition device | |
| CN102904337A (en) | Power supply device of online monitoring device for power transmission lines | |
| Qu et al. | Implementation of domino wireless power transfer technology for power grid online monitoring system | |
| CN111697708A (en) | Non-contact inductive power supply design method based on power control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |