CN106877415A - A kind of transmission line online monitoring system power supply - Google Patents
A kind of transmission line online monitoring system power supply Download PDFInfo
- Publication number
- CN106877415A CN106877415A CN201510914963.7A CN201510914963A CN106877415A CN 106877415 A CN106877415 A CN 106877415A CN 201510914963 A CN201510914963 A CN 201510914963A CN 106877415 A CN106877415 A CN 106877415A
- Authority
- CN
- China
- Prior art keywords
- transmission line
- power supply
- monitoring system
- super capacitor
- online monitoring
- 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.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 22
- 238000012544 monitoring process Methods 0.000 title claims abstract description 18
- 239000003990 capacitor Substances 0.000 claims abstract description 30
- 230000004224 protection Effects 0.000 claims abstract description 12
- 238000007599 discharging Methods 0.000 claims abstract description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 9
- 229910052744 lithium Inorganic materials 0.000 claims description 9
- 230000008859 change Effects 0.000 claims description 7
- 230000005674 electromagnetic induction Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000004146 energy storage Methods 0.000 abstract description 4
- 230000000087 stabilizing effect Effects 0.000 description 6
- 238000001914 filtration Methods 0.000 description 4
- 238000007726 management method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000012806 monitoring device Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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- H02J7/025—
-
- 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
A kind of transmission line online monitoring system power supply discloses a kind of transmission line online monitoring system power supply, including current transformer, overvoltage protection, four parts of super capacitor charge control and power management.The present invention uses current transformer power taking, and Large Copacity energy storage and fast charging and discharging characteristic using super capacitor are exported and powered to monitoring system through energy storage super capacitor and electric discharge super capacitor.Power supply changes according to load terminal voltage, by controlling the break-make of storage capacitor and discharge capacity, using storage capacitor for discharge capacity charges, finally by discharge capacity supplying power for outside.Unstable for bus current, overpressure protection dtex does not devise energy and recycles circuit.
Description
Art
The present invention relates to a kind of on-line monitoring system, more particularly to a kind of transmission line online monitoring system power supply.
Background technology
Transmission line online monitoring system power supply mode is a lot, remote transfer signal relay in monitoring system may be mounted at shaft tower bottom or the shorter position of surrounding, so general all can select the larger batteries of relatively large cell panel and capacity using solar powered.But the power supply of the sensor of monitoring device for being suspended on high voltage transmission line, the solar panels volume of relatively high power is excessive and is influenceed by weather；Independent battery can not provide enough power；Laser power supply is easily limited by geographical conditions, and equipment complexity causes high cost and power and efficiency are all very low；Voltage transformer is higher to the requirement insulated, and is easily influenceed by periphery electromagnetic environment；Although microwave and ultrasound is powered has been achieved with certain progress, and power is also higher, but still immature, need to further further investigate, and has been obtained for application in military field at present.
Current transformer（TA）Power taking has been widely used in power industry, but major part is used in the monitoring device of power very little, such as TA carries out current sample with 2 groups of coils and takes energy respectively in fault location system, and power only has tens milliwatts, but it is equipped with battery, it is sufficient to provide corresponding energy.But this energy-provision way has power taking dead band, in bus current very little, such as only several amperes, to more than ten ampere-hours, are not enough to provide energy needed for electrical equipment at all；And the Various Seasonal of a year, the different periods of a day, very greatly, bus current fluctuates and causes secondary side power taking very unstable for the load current change of bus, and primary current is excessive or too small all the stable output of power supply can be had a huge impact.
The mode powered in turn using 2 batteries increases battery life, and improves the reliability and stability of power supply, but super capacitor can part substituting battery function, and be better than battery on discharge and recharge number of times and service life.Additionally, when monitoring system has data remote transmitting device, the momentary high power flash-over characteristic of super capacitor can well meet the significant power demand for sending data moment, without causing significantly pressure drop.
The content of the invention
In order to overcome the problem that bus load terminal voltage changes, electric current is unstable, the present invention to propose a kind of transmission line online monitoring system power supply.
The technical solution adopted for the present invention to solve the technical problems is：Reduce electric current dead band by way of super capacitor transition is exported and stabilization is exported；The storage of secondary side overvoltage protection prevents primary current excessive and stable impacting is exported to secondary side using excess energy.
Transmission line online monitoring system power supply includes current transformer, overvoltage protection, four parts of super capacitor charge control and power management.
The current transformer uses open-close type, is stuck on power transmission line, and the change of surrounding magnetic field is caused using the curent change on power transmission line, completes to pass through process of the electromagnetic induction from power transmission line power taking.
The overvoltage protection includes charging chip, relay and other elements, and overvoltage protection is carried out according to front voltage signal.
The super capacitor charge control reduces bus current dead band to try one's best, using double electric capacity, by two controls of electric capacity, the charge and discharge of indirect control super capacitor.
The power management selects two parts to constitute by charging and discharging lithium battery control and load power source.
The beneficial effects of the invention are as follows：System uses current transformer power taking, and Large Copacity energy storage and fast charging and discharging characteristic using super capacitor are exported and powered to monitoring system through energy storage super capacitor and electric discharge super capacitor.Power supply changes according to load terminal voltage, by controlling the break-make of storage capacitor and discharge capacity, using storage capacitor for discharge capacity charges, finally by discharge capacity supplying power for outside.Unstable for bus current, overpressure protection dtex does not devise energy and recycles circuit.
Brief description of the drawings
Fig. 1 power supply architectures.
Fig. 2 overvoltage protections.
Fig. 3 super capacitor charge controls.
Fig. 4 power managements.
Specific embodiment
Current transformer uses open-close type, it is stuck on power transmission line, curent change on power transmission line causes the change of surrounding magnetic field, electric energy is changed into magnetic energy, cause the changes of magnetic field through coil on transformer, induced electromotive force is induced at coil two ends, now magnetic energy is converted into electric energy again, so as to complete the process by electromagnetic induction from power transmission line power taking.The electric energy for now taking out is unstable exchange, by becoming direct current output after outside rectifying and wave-filtering.
In Fig. 1, power supply architecture includes electricity-getting mutual inductor, surge protection, rectifying and wave-filtering, voltage stabilizing, super capacitor, lithium battery and control section.Wherein surge protection uses 1 Transient Suppression Diode（TVS）, its voltage stabilizing value is slightly larger than the maximum allowable input value of rear end voltage stabilizing chip；Rectification is using conventional bridge rectifier；Filtering is also for current version LC is filtered；The storage energy of super capacitor 1 is used for being charged for super capacitor 2, is used as storage capacitor；The powering load of super capacitor 2, uses as discharge capacity.
In Fig. 2, resistance R1, R2, R3 are equalizing resistance, and front voltage is divided equally on 3 resistance, if actuating of relay voltage is, voltage stabilizing chip is maximum, minimum input voltage is respectively,.When the voltage at R3 two ends is less than the operation voltage of relay, relay gating " 1 " end, whole voltages are added to voltage stabilizing chip two ends after filtering, and whole power are supplied to load；When the voltage of R3 is more than actuating of relay voltage, relay gating " 2 " end, R1 is removed, R2 and R3 voltages access voltage stabilizing chip input, supply load；R1 voltages access lithium cell charging chip input, and energy is provided for battery charges.
In Fig. 3, when being controlled to super capacitor charging, C1 is charged as buffering, then C2 is supplied in interrupted form, then exports and give equivalent load RL, then load voltage can fluctuate in the reasonable scope, so as to reduce electric current dead band, electrical equipment normal work can be made when power output is slightly not enough.When RL both end voltages are higher than D1 operation voltage lower limits, D1 output high level, VT1 disconnects, and TA charges for C1；When RL both end voltages be less than lower voltage limit when, D1 output low level, VT1 conducting, TA for C1 charges while, C1 be C2 charging.
In Fig. 4, when carrying out power management, D1, D2 are single supply hysteresis comparator, and wherein D1 is anti-phase to be used, and being subject to simple peripheral circuit using LVT339 is capable of achieving；D3 is general comparator；VT1, VT2, VT3, VT4 are managed for MOSFET, it is alternatively that switch is used；Diode VD1 is used for preventing the current reflux in super capacitor C2 from entering super capacitor C1 and lithium battery, causes the circuit cannot normal work；Power supply is selected and TA defencive functions are realized by VT2, VT3, VT4 and D2.VT2, VT3 realize selection TA or lithium battery to load supplying using connection back-to-back.When RL normal works are ensured, the action lower limit of comparator D2 is set to be less than 4.8 V, comparator D3 is set to be acted prior to D2 simultaneously, so that realize first suspending lithium cell charging when TA emergent powers are not enough, if load voltage continues to drop to D2 action lower limits, show that TA power outputs are still not enough during only band RL, can determine that TA is unable to maintain that RL normal works, D2 action output low levels, VT3 conductings, VT2 is closed, and RL is powered by lithium battery.In the case of TA power outputs abundance, D2 output high level, VT2 conductings, VT3 is closed, and now TA powers for RL.VT4 is acted by D2 controls, because TA secondary sides can not open a way, otherwise occurs that big voltage causes to damage with circuit in itself to TA, so adding protective resistance in design.When RL selects lithium battery power supply, D2 output low levels, VT4 conductings will access equivalent load of the super capacitor C1 two ends as RL, and its resistance value can normally be configured according to actual using load situation.
Claims (5)
1. a kind of transmission line online monitoring system power supply, it is characterised in that：Including current transformer, overvoltage protection, four parts of super capacitor charge control and power management.
2. a kind of transmission line online monitoring system power supply as claimed in claim 1, it is characterised in that the current transformer causes the change of surrounding magnetic field using the curent change on power transmission line, completes to pass through process of the electromagnetic induction from power transmission line power taking.
3. a kind of transmission line online monitoring system power supply as claimed in claim 1, it is characterised in that the overvoltage protection is made up of charging chip, relay and other elements.
4. a kind of transmission line online monitoring system power supply as claimed in claim 1, it is characterised in that the super capacitor charge control using double electric capacity, by two controls of electric capacity, the charge and discharge of indirect control super capacitor.
5. a kind of transmission line online monitoring system power supply as claimed in claim 1, it is characterised in that the power management selects two parts to constitute by charging and discharging lithium battery control and load power source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510914963.7A CN106877415A (en) | 2015-12-13 | 2015-12-13 | A kind of transmission line online monitoring system power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510914963.7A CN106877415A (en) | 2015-12-13 | 2015-12-13 | A kind of transmission line online monitoring system power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106877415A true CN106877415A (en) | 2017-06-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510914963.7A Pending CN106877415A (en) | 2015-12-13 | 2015-12-13 | A kind of transmission line online monitoring system power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106877415A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109038785A (en) * | 2018-08-07 | 2018-12-18 | 广州供电局有限公司 | Low pressure electricity getting system |
| CN109256847A (en) * | 2018-09-20 | 2019-01-22 | 上海枫昱能源科技有限公司 | The charging/discharging thereof and system of electric wiring fire disaster intelligently early warning Internet of Things perception terminal |
| CN111555600A (en) * | 2019-02-12 | 2020-08-18 | 赛米控电子股份有限公司 | Circuit arrangement with a power converter and a capacitor discharge device |
| CN114509172A (en) * | 2022-02-14 | 2022-05-17 | 贵州电网有限责任公司 | Passive temperature sensor system and temperature calculation method |
| CN116437239A (en) * | 2023-03-29 | 2023-07-14 | 三沙供电局有限责任公司 | User load monitoring terminal based on Beidou positioning time service technology |
-
2015
- 2015-12-13 CN CN201510914963.7A patent/CN106877415A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109038785A (en) * | 2018-08-07 | 2018-12-18 | 广州供电局有限公司 | Low pressure electricity getting system |
| CN109256847A (en) * | 2018-09-20 | 2019-01-22 | 上海枫昱能源科技有限公司 | The charging/discharging thereof and system of electric wiring fire disaster intelligently early warning Internet of Things perception terminal |
| CN109256847B (en) * | 2018-09-20 | 2022-02-22 | 上海枫昱能源科技有限公司 | Charging and discharging method and system for intelligent early warning Internet of things sensing terminal of electric line fire |
| CN111555600A (en) * | 2019-02-12 | 2020-08-18 | 赛米控电子股份有限公司 | Circuit arrangement with a power converter and a capacitor discharge device |
| CN111555600B (en) * | 2019-02-12 | 2024-08-02 | 赛米控电子股份有限公司 | Circuit arrangement with a power converter and a capacitor discharge device |
| CN114509172A (en) * | 2022-02-14 | 2022-05-17 | 贵州电网有限责任公司 | Passive temperature sensor system and temperature calculation method |
| CN116437239A (en) * | 2023-03-29 | 2023-07-14 | 三沙供电局有限责任公司 | User load monitoring terminal based on Beidou positioning time service technology |
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Legal Events
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170620 |