CN203589825U - Supercapacitor based inductive energy taking power supply device of high voltage measuring system - Google Patents
Supercapacitor based inductive energy taking power supply device of high voltage measuring system Download PDFInfo
- Publication number
- CN203589825U CN203589825U CN201320739460.7U CN201320739460U CN203589825U CN 203589825 U CN203589825 U CN 203589825U CN 201320739460 U CN201320739460 U CN 201320739460U CN 203589825 U CN203589825 U CN 203589825U
- Authority
- CN
- China
- Prior art keywords
- super capacitor
- module
- supercapacitor
- power supply
- circuit
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to a supercapacitor based inductive energy taking power supply device of a high voltage measuring system. The supercapacitor based inductive energy taking power supply device comprises a current transformer, a rectification and filtering circuit, a DC/DC module, a lithium battery and a power supply management unit, wherein the current transformer takes energy from a high-voltage cable in an inductive mode, and outputs stable voltage after passing through the rectification and filtering circuit and the DC/DC module. The supercapacitor based inductive energy taking power supply device further comprises a supercapacitor. The power supply management unit comprises a supercapacitor charging control circuit and a lithium battery charging control circuit. The DC/DC module charges the supercapacitor through the supercapacitor charging control circuit, and the supercapacitor provides power for a load. Meanwhile, the DC/DC module charges the lithium battery through the lithium battery charging control circuit, and the lithium battery provides power for the load. The supercapacitor based inductive energy taking power supply device provided by the utility model adopts the supercapacitor as an energy storage device, and solves problems that a power supply device used by an existing looped network cabinet is small in the number of recycling use, great in maintenance load and large in sizes, transformation of the existing looped network cabinet requires the power interruption, and the like.
Description
Technical field
The utility model relates to a kind of power technology, relates in particular to a kind of based on Transmission System for High Voltage Measurements induction energy fetching supply unit.
Background technology
The powerup issue of Transmission System for High Voltage Measurements is a difficult point of current engineering application, and research power supply stable, reliable, low-power consumption has important engineering use value.
Conventional supply power mode has solar energy, storage battery, laser function, bus induction energy fetching etc. at present.Because solar panel is bulky, be unfavorable for installing, and be subject to climatic influences, under the rainy foggy weather conditions in south, be not suitable for online equipment; Voltage transformer requires high to insulating properties, be subject to the impact of the many factors such as temperature, stray capacitance and electromagnetic interference.Although can carry out by changing the size of capacitor C the output of Modulating Power, large selecting of electric capacity may produce harmonic wave, causes dividing potential drop unstable, affects subsequent conditioning circuit; Laser function is subject to geographical conditions restriction, and equipment complexity causes high cost and power efficiency all very low; The most promising supply power mode is to extract electric energy from transmission line, and on wire, suit is got and can be induced alternating voltage by coil, and then the reliable direct current of stable output after over commutation, filtering, voltage stabilizing, realizes isolated power supply.
At present power system high tension power line on-line monitoring system much adopts GSM/GPRS data transfer mode, and GSM/GPRS module is high-power in data transmit-receive moment, and electric current can be up to hundreds of milliampere, and under ideal case, operating current is only 10～20 mA.Adopt induction energy fetching output power of power supply under little current conditions very little, deficiency provides enough high-power powers while thinking data transmit-receive transmission.Get and can coil coordinate lithium ion battery floating charge mode, have lithium ion cell charging complex management, the shortcoming such as charging temperature is restricted.In the design of this power circuit, added ultracapacitor, solved this difficult point of high-power power supply of moment, circuit is simply easy to safeguard.
Summary of the invention
Technical problem to be solved in the utility model is the deficiency for above-mentioned background technology, a kind of Transmission System for High Voltage Measurements induction energy fetching supply unit based on super capacitor is provided, adopt super capacitor as energy storage device, the characteristic of special current transformer (TA) and lithium battery lithium battery energy instrument, equipment, carries out the maintenance of instrument, equipment.Test complete two-way get can, what solve existing ring main unit on-line monitoring system supply unit used recycles that number of times is few, maintenance is large, the large and problems such as the existing ring main unit of transformation that need to have a power failure of volume.
technical scheme
For achieving the above object, the technical scheme the utility model proposes is as follows:
Transmission System for High Voltage Measurements induction energy fetching supply unit based on super capacitor, comprise current transformer, current rectifying and wave filtering circuit, DC/DC module, lithium battery and Power Management Unit, by current transformer from high-tension cable induction energy fetching, through current rectifying and wave filtering circuit, alternating current is transformed to direct current, pass through again the voltage of DC/DC module stable output, also comprise super capacitor, described Power Management Unit comprises super capacitor charging control circuit and lithium cell charging control circuit, DC/DC module is charged to super capacitor by super capacitor charging control circuit, super capacitor is load supplying, DC/DC module is passed through lithium cell charging control circuit to lithium cell charging simultaneously, lithium battery is load supplying.
As further prioritization scheme of the present utility model, described current transformer comprises iron core and around the coil on iron core, and described coil is single-ended or both-end is opened the coil of air gap.
As further prioritization scheme of the present utility model, also comprise impact protection circuit, described coil output is connected to impact protection circuit, and described impact protection circuit is connected to the input of current rectifying and wave filtering circuit.
As further prioritization scheme of the present utility model; also comprise overvoltage crowbar; the input of overvoltage crowbar is connected to the output of current rectifying and wave filtering circuit, and overvoltage crowbar Yi road output is connected to the charging end of lithium battery, and another road output is connected to DC/DC module input.
As further prioritization scheme of the present utility model, described super capacitor comprises first, second ultracapacitor, described DC/DC module is described the first ultracapacitor charging, and the first ultracapacitor is the second ultracapacitor charging, and the second ultracapacitor is load supplying.
beneficial effect
(1) compare with storage battery, this method online power taking, also for super capacitor charging, does not need to change battery;
(2) compare with solar cell, the energy density of this method is large, and energy conversion rate is high, can reliable power supply under various weathers;
(3) get and can add Combined storage battery method and compare with bus, the function that this method super capacitor can part substituting battery, and discharging and recharging number of times and on useful life, be better than battery.In addition,, when monitoring system has data remote transmitting device, the instantaneous high power discharge characteristic of super capacitor can meet the transmission data high-power demand of moment well, and can not cause significantly pressure drop.
Accompanying drawing explanation
Fig. 1 is the theory diagram of getting energy power supply;
Fig. 2 (a) is the structure chart of conventional coil;
Fig. 2 (b) is the structure chart that improves coil;
Magnetization curve comparison diagram before and after Fig. 3 iron core improves;
Fig. 4 is overvoltage crowbar circuit theory diagrams;
Fig. 5 is super capacitor charging control circuit figure;
Fig. 6 is Power Management Unit circuit theory diagrams.
Embodiment
As shown in Figure 1; the utility model discloses a kind of Transmission System for High Voltage Measurements induction energy fetching supply unit based on super capacitor, comprises current transformer, impact protection circuit, current rectifying and wave filtering circuit, overvoltage crowbar, DC/DC module, two ultracapacitors, lithium battery and Power Management Unit.Special TA is enclosed within on high-tension cable; utilize electromagnetic induction principle by current transformer from high-tension cable induction energy fetching; through current rectifying and wave filtering circuit, alternating current is transformed to direct current; process overvoltage crowbar is on the one hand by unnecessary Power supply lithium battery; pass through on the other hand high efficiency DC/DC module; the voltage of stable output is Transmission System for High Voltage Measurements energy supply.Described Power Management Unit comprises super capacitor charging control circuit and lithium cell charging control circuit; when voltage is excessive; start overvoltage crowbar; part energy by DC/DC module powering load, (charge to super capacitor by super capacitor charging control circuit by DC/DC module; super capacitor is load supplying); unnecessary energy is passed through to lithium cell charging control circuit to lithium cell charging, lithium battery is load supplying simultaneously.This circuit, by super capacitor charging control unit and lithium cell charging control unit, efficiently solves power supply flying power and output voltage stability problem.
(1) current transformer
As shown in Figure 2 (a) shows, be the current transformer of prior art.Current transformer 1 comprises iron core and becomes circle around the coil on iron core.
During due to iron core magnetic saturation, secondary side voltage is very unstable, and when the degree of depth is saturated, induction voltage waveform distorts, and becomes pointed peaky pulse ripple.Because rear end electronic component withstand voltage is not high, when increasing, peak value reaches several hectovolts, the serious consequence such as may cause that chip burns.Long-term work makes iron loss high in degree of depth saturation condition, and coil temperature rise is too high, likely causes that dither even burns out coil.Therefore should prevent that iron core is operated in saturation condition as far as possible, avoid long-term work in degree of depth saturation condition.
As Fig. 2 (b) is depicted as the utility model current transformer, described coil is single-ended or both-end is opened the coil of air gap, by introducing the way of air gap delta 1 and δ 2, increases the magnetic resistance of magnetic circuit, reduces relativepermeabilityμr, postpones iron core H value while reaching capacity.
As shown in Figure 3, the magnetization curve comparison diagram after iron core improvement.So select, use the silicon steel sheet of low magnetic permeability, high saturated magnetic induction as core material, structure is open-close type.
(2) impact protection circuit
Burn power circuit when preventing lightning impulse current and the large electric current of transient fault, used transition twin zener dioder (TVS) (being impact protection circuit) before rectifier bridge, TVS has limited the surge voltage of induction coil output.Described current transformer output is connected to the input of impact protection circuit, and the output of described impact protection circuit is connected to the input of current rectifying and wave filtering circuit.
(3) current rectifying and wave filtering circuit
Rectification adopts bridge rectifier, the conventional π type LC filtering that filtering adopts.
(4) overvoltage crowbar
The input of overvoltage crowbar is connected to the output of current rectifying and wave filtering circuit, and overvoltage crowbar one road output is connected to the charging end of lithium battery, and another road output is connected to DC/DC module input.As shown in Figure 4, the left side is the output that connects current rectifying and wave filtering circuit, and one tunnel, the right connects the input of DC/DC module, and another road, the right connects the input of charging chip.When the voltage at R3 two ends is less than the operation voltage of relay, relay gating " 1 " end, after filtering, all voltage is added to DC/DC module two ends, and all power offers load; When the voltage of R3 is greater than actuating of relay voltage, relay gating " 2 " end, R1 is cut, the input of R2 and R3 voltage access DC/DC module, supply load; R1 voltage access lithium cell charging chip input, for battery charging provides energy.
(5) voltage stabilizing circuit
Select a kind of efficient, high-conversion rate, voltage-dropping type Voltage stabilizing module, have high-conversion rate and wide input range, high-conversion rate is conducive to further reduce starting current, and the primary current scope that wide input range can be worked power supply is larger.
(6) super capacitor charging control circuit
As shown in Figure 5, because high pressure power taking is different from other form power supplys, its power output is subject to the impact of load very large, in the certain situation of bus current, as long as load exceeds certain limit, power output will be not enough, because voltage stabilizing chip has certain voltage input lower limit, in limited time chip cannot normally start voltage lower than lower, no-output or export unstable.For reduce bus current dead band as far as possible, in the situation that using two electric capacity, to C1 charging conduct buffering, then with interrupted form, supply with C2, export to again equivalent load RL, load voltage can fluctuate in the reasonable scope, thereby reduces electric current dead band, when power output is slightly not enough, can make electrical equipment normally work.When RL both end voltage higher than D1 operation voltage under in limited time, D1 export high level, VT1 disconnects, DC/DC module is that C1 charges; When RL both end voltage is during lower than D1 lower voltage limit, D1 output low level, VT1 conducting, when DC/DC is C1 charging, C1 is C2 charging.
(7) Power Management Unit
as shown in Figure 6, the output of DC/DC module is given the first ultracapacitor charging, the output of the second comparator D2 is connected to the control end of the 4th switching circuit, the 4th switching circuit series connection DC/DC module output protection resistance R p, described be in series the 4th switching circuit and protective resistance Rp two ends are connected in parallel to two outputs of DC/DC module, the positive output end of DC/DC module is connected to the input of the first switching circuit, the control end of the first switching circuit is connected to the first comparator D1 output, the negative input end of the first comparator D1 is connected to load positive pole, the output of the first switching circuit is connected to the input of second switch circuit, the output of second switch circuit is connected to the output of the 3rd switching circuit, lithium battery electric discharge output is connected to the input of the 3rd switching circuit, the output of second switch circuit is connected to the positive pole of load through diode.The base stage of second switch circuit and the 3rd switching circuit interconnects, and the Enable Pin of lithium cell charging control circuit is connected to the output of the 3rd comparator D3, and the negative input end of the 3rd comparator D3 is connected to the positive pole of load.Super capacitor comprises first, second ultracapacitor, and described DC/DC module is described the first ultracapacitor charging, and the first ultracapacitor is the second ultracapacitor charging, and the second ultracapacitor is load supplying.
In Power Management Unit, the output of voltage protection circuit is taken on the left side.First, second comparator is respectively single supply hysteresis comparator, wherein the first comparator D1, the second comparator D2 and the anti-phase use of the 3rd comparator D3, and the 3rd comparator D3 is general comparator; The first switching circuit VT1, second switch circuit VT2, the 3rd switching circuit VT3 and the 4th switching circuit VT4 are respectively the pipe into MOSFET, as selector switch, use; Diode VD1 is used for preventing the current reflux in the second ultracapacitor C2 to enter the first ultracapacitor C1 and lithium battery, and (article one is by C2 → VD1 → VT3 → voltage stabilizing chip → charge controlling chip.Second is by VD1 → VT2 → VT1 → C1), cause circuit normally to work; Because every joint lithium battery is pressed in 4.2 V left and right, so the design uses 2 joint lithium batteries to power, obtain+5V of pressurizer output is selected in rear end; DC/DC module output protection resistance R p is the output protection resistance of DC/DC module.Charging and discharging lithium battery is controlled function and is realized by the 3rd comparator D3.In the design, DC/DC output module is also given lithium cell charging when being load supplying as shown in Figure 1.When the terminal voltage of load RL is during higher than 4.8V, the Enable Pin S/S input high level of LT1512 starts normal work, for lithium battery charges and the first ultracapacitor C1 charging; When the terminal voltage of load RL is during lower than 4.8 V, S/S holds input low level, battery charging stops, when now DC/DC output module is the first ultracapacitor C1 charging, the first ultracapacitor C1 is also the second ultracapacitor C2 charging, and then the second ultracapacitor C2 powers to load.Power supply is selected and DC/DC module output protecting function is realized by second switch circuit VT2, the 3rd switching circuit VT3, the 4th switching circuit VT4 and the second comparator D2.Second switch circuit VT2, the 3rd switching circuit VT3 adopt to connect back-to-back to realize and select the output of DC/DC module or lithium battery to load supplying.When proof load RL normally works, make the action lower limit of the second comparator D2 lower than 4.8V, make the 3rd comparator D3 move prior to the second comparator D2 simultaneously, thereby realize and when DC/DC module emergent power is not enough, first suspend lithium cell charging, if load voltage continues to drop to the second comparator D2 action lower limit, while showing a bringing onto load RL, DC/DC module power output is still not enough, can judge that DC/DC module cannot maintain load RL and normally work, the second comparator D2 action output low level, (will be that load RL powers by voltage stabilizing chip by charge controlling chip) the 3rd switching circuit VT3 conducting, second switch circuit VT2 closes, load RL is powered by lithium battery.The in the situation that of DC/DC module power output abundance, the second comparator D2 output high level, second switch circuit VT2 conducting, the 3rd switching circuit VT3 closes, and now DC/DC module is load RL power supply.The 4th switching circuit VT4 action is controlled by the second comparator D2, because secondary side can not be opened a way, otherwise there will be large voltage to cause damage to DC/DC module itself and circuit, so added protective resistance Rp in design.When load RL selects lithium battery power supply; the second comparator D2 output low level; the 4th switching circuit VT4 conducting, the equivalent load using protective resistance Rp access in parallel the first ultracapacitor C1 two ends as load RL, its resistance value can be configured according to the normal working load size cases of reality.
Claims (5)
1. the Transmission System for High Voltage Measurements induction energy fetching supply unit based on super capacitor, comprise current transformer, current rectifying and wave filtering circuit, DC/DC module, lithium battery and Power Management Unit, by current transformer from high-tension cable induction energy fetching, through current rectifying and wave filtering circuit, alternating current is transformed to direct current, pass through again the voltage of DC/DC module stable output, it is characterized in that: also comprise super capacitor, described Power Management Unit comprises super capacitor charging control circuit and lithium cell charging control circuit, DC/DC module is charged to super capacitor by super capacitor charging control circuit, super capacitor is load supplying, DC/DC module is passed through lithium cell charging control circuit to lithium cell charging simultaneously, lithium battery is load supplying.
2. the Transmission System for High Voltage Measurements induction energy fetching supply unit based on super capacitor according to claim 1, is characterized in that: described current transformer comprises iron core and around the coil on iron core, and described coil is single-ended or both-end is opened the coil of air gap.
3. the Transmission System for High Voltage Measurements induction energy fetching supply unit based on super capacitor according to claim 2; it is characterized in that: also comprise impact protection circuit; described coil output is connected to impact protection circuit, and described impact protection circuit is connected to the input of current rectifying and wave filtering circuit.
4. the Transmission System for High Voltage Measurements induction energy fetching supply unit based on super capacitor according to claim 1 and 2; it is characterized in that: also comprise overvoltage crowbar; the input of overvoltage crowbar is connected to the output of current rectifying and wave filtering circuit; overvoltage crowbar Yi road output is connected to the charging end of lithium battery, and another road output is connected to DC/DC module input.
5. the Transmission System for High Voltage Measurements induction energy fetching supply unit based on super capacitor according to claim 1 and 2, it is characterized in that: described super capacitor comprises first, second ultracapacitor, described DC/DC module is described the first ultracapacitor charging, the first ultracapacitor is the second ultracapacitor charging, and the second ultracapacitor is load supplying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320739460.7U CN203589825U (en) | 2013-11-22 | 2013-11-22 | Supercapacitor based inductive energy taking power supply device of high voltage measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320739460.7U CN203589825U (en) | 2013-11-22 | 2013-11-22 | Supercapacitor based inductive energy taking power supply device of high voltage measuring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203589825U true CN203589825U (en) | 2014-05-07 |
Family
ID=50587675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320739460.7U Expired - Fee Related CN203589825U (en) | 2013-11-22 | 2013-11-22 | Supercapacitor based inductive energy taking power supply device of high voltage measuring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203589825U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103683455A (en) * | 2013-11-22 | 2014-03-26 | 南京信息工程大学 | Supercapacitor based inductive energy-extracting power supply device of high-voltage measurement system |
| CN105024460A (en) * | 2015-07-27 | 2015-11-04 | 东南大学 | Design method for 110 kV high-voltage line wireless power supply system used online induction energy-obtaining device |
| CN108702027A (en) * | 2016-02-12 | 2018-10-23 | 莱基动力公司 | Devices, systems, and methods for power extraction |
| CN110940895A (en) * | 2019-12-17 | 2020-03-31 | 四川赛康智能科技股份有限公司 | Cable joint explosion-proof fire-extinguishing and temperature, partial discharge comprehensive on-line monitoring device |
| CN112751395A (en) * | 2020-12-15 | 2021-05-04 | 中国电力科学研究院有限公司 | Power management circuit and power management method for obtaining electricity through coil electromagnetic induction |
| CN113406416A (en) * | 2021-06-11 | 2021-09-17 | 国网江苏省电力有限公司电力科学研究院 | Performance detection system of micro-power current power taking device for power transmission and transformation equipment |
-
2013
- 2013-11-22 CN CN201320739460.7U patent/CN203589825U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103683455A (en) * | 2013-11-22 | 2014-03-26 | 南京信息工程大学 | Supercapacitor based inductive energy-extracting power supply device of high-voltage measurement system |
| CN105024460A (en) * | 2015-07-27 | 2015-11-04 | 东南大学 | Design method for 110 kV high-voltage line wireless power supply system used online induction energy-obtaining device |
| CN105024460B (en) * | 2015-07-27 | 2017-05-03 | 东南大学 | Design method for 110 kV high-voltage wireless power supply system induction energy-obtaining device |
| CN108702027A (en) * | 2016-02-12 | 2018-10-23 | 莱基动力公司 | Devices, systems, and methods for power extraction |
| CN110940895A (en) * | 2019-12-17 | 2020-03-31 | 四川赛康智能科技股份有限公司 | Cable joint explosion-proof fire-extinguishing and temperature, partial discharge comprehensive on-line monitoring device |
| CN112751395A (en) * | 2020-12-15 | 2021-05-04 | 中国电力科学研究院有限公司 | Power management circuit and power management method for obtaining electricity through coil electromagnetic induction |
| CN113406416A (en) * | 2021-06-11 | 2021-09-17 | 国网江苏省电力有限公司电力科学研究院 | Performance detection system of micro-power current power taking device for power transmission and transformation equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103683455A (en) | Supercapacitor based inductive energy-extracting power supply device of high-voltage measurement system | |
| CN105914868B (en) | Super capacitor energy-storage uninterruptible power supply and its method of supplying power to based on current transformer | |
| CN201185355Y (en) | High voltage line induction electricity-taking apparatus | |
| CN203589825U (en) | Supercapacitor based inductive energy taking power supply device of high voltage measuring system | |
| CN205622303U (en) | Utilize super capacitor to realize that current transformer of uninterrupted power supply gets electric power supply circuit | |
| CN101888121B (en) | Energy acquisition and power supply management device of current transformer of overhead line | |
| CN101860084B (en) | Power supply source of high-voltage side measuring system | |
| CN202206195U (en) | Power source for power cable grounding circulation monitoring device | |
| CN102118067B (en) | Non-contact high-voltage power obtaining method | |
| CN202634061U (en) | High-voltage switch monitoring system power supply for transformer station | |
| CN101969221B (en) | Storage battery charger and charging control method thereof | |
| CN203056660U (en) | Intelligent charger for electric car | |
| CN202150743U (en) | Coupling energy taking power supply system for high voltage transmission line fault monitoring | |
| CN105245020A (en) | Power supply source for 3G wireless network video monitoring device | |
| CN103474987B (en) | Electric transmission line on-line monitoring device energy obtaining system based on ground wire induction | |
| CN109687540A (en) | A kind of electric wire magnetic field energy acquisition power supply | |
| CN106877415A (en) | A kind of transmission line online monitoring system power supply | |
| CN204334130U (en) | Chargeable intelligent cable CT electricity getting device | |
| CN101982921B (en) | Universal high-voltage capacitor energy storage module | |
| CN103094976A (en) | Device of overhead line captive test (CT) taking energy power supply | |
| CN104319910A (en) | Power source energy taking circuit based on high-voltage power transmission line | |
| CN204597597U (en) | A kind of domestic solar electric power system | |
| CN201813191U (en) | Accumulator charger | |
| CN203734382U (en) | High voltage CT self-power hardware platform | |
| CN202334336U (en) | Active electronic type transformer power supply |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140507 Termination date: 20151122 |