CN204376516U - A kind of self-powered super capacitor energy-storing power supply detected for line fault - Google Patents
A kind of self-powered super capacitor energy-storing power supply detected for line fault Download PDFInfo
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- 239000003990 capacitor Substances 0.000 title claims abstract description 76
- 238000004146 energy storage Methods 0.000 claims abstract description 8
- 238000007599 discharging Methods 0.000 claims description 46
- 238000005070 sampling Methods 0.000 claims description 20
- 238000001514 detection method Methods 0.000 claims description 8
- 230000002457 bidirectional effect Effects 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 9
- 229910052744 lithium Inorganic materials 0.000 description 9
- 238000010586 diagram Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 230000001052 transient effect Effects 0.000 description 3
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
The utility model discloses a kind of self-powered super capacitor energy-storing power supply detected for line fault, comprise and to be connected between current transformer and failure detector and for the rectification circuit that provides power supply to export and precharge and bypass switching circuit, connect for controlling to the two-way gate-controlled switch circuit of super capacitor discharge and recharge with precharge and bypass switching circuit, connect with two-way gate-controlled switch circuit and charge-discharge control circuit for controlling two-way gate-controlled switch circuit debugging and shutoff, connect with charge-discharge control circuit and two-way gate-controlled switch circuit is super capacitor for energy storage, be connected on precharge mutually and between bypass circuit and reference circuit for overvoltage protection control and drive mistake pressure-controlled and drive circuit, the input of reference circuit is connected to precharge and bypass switching circuit, what output connected is charge-discharge control circuit and crosses pressure-controlled and control drive circuit.The utility model can be stable run on for a long time line fault detect in the middle of.
Description
Technical field
The utility model belongs to line fault detection field, particularly a kind of self-powered super capacitor energy-storing power supply detected for line fault.
Background technology
Be applied to the DC power supply that transmission line malfunction detects at present, usually have following several mode: 1. directly use lithium battery group or storage battery as the power supply of line fault testing device; 2. solar panel and Combined storage battery is used to power; 3. adopt current transformer from power taking a cable line, and being aided with storage battery or lithium battery energy storage battery, to realize power supply uninterrupted.But these traditional modes requiring the long-life, the application scenario such as highly reliable all has problems.Mode 1. in pure adopt lithium battery or storage battery power supply, so can reduce the size of line fault testing device, efficient and conveniently to come into operation, but to there is useful life short for lithium battery and storage battery, and lithium battery and accumulator property influenced by environmental temperature.2. mode adopts solar panel and storage battery, its can meet be operated in for a long time not needs external power supply when, environmental protection and energy saving, but solar panel and storage battery make the size of line fault testing device greatly increase, and solar panel conversion efficiency affects larger by factors such as weather, weather, environment, and storage battery itself to there is useful life short, charge-discharge performance temperature influence.3. mode utilizes current transformer from power taking a cable line, and being aided with storage battery or lithium battery energy storage battery, to realize power supply uninterrupted, this mode and mode 1. 2. compared with, take into account size and the useful life of failure detector, before being, the two is incomparable, is also current modal occupation mode.
But the electric current of the high voltage bus of current transformer primary side is very little during normal work, even if under occurring that line fault produces transient high-current situation, charging and discharging currents due to storage battery and lithium battery can not be too large etc. problem, storage battery or lithium battery cannot obtain enough energy, under the state that will be in electric discharge for a long time, have that useful life is short, power density is low, these defects of discharge performance temperature influence.
Therefore for requiring long-life, highly reliable application scenario, use traditional mode 1. 2. 3. etc. power supply just have some limitations.
Utility model content
The utility model object is to provide a kind of self-powered super capacitor energy-storing power supply detected for line fault, detects Problems existing in self powered supply to solve existing line fault.
To achieve these goals, the utility model adopts following technical scheme:
A kind of self-powered super capacitor energy-storing power supply detected for line fault, comprise rectification circuit, connect with rectification circuit for providing power supply to export and the precharge of overvoltage protection and bypass switching circuit, with precharge and the two-way two-way gate-controlled switch circuit for energy storage discharge and recharge connected of bypass switching circuit, connect with two-way gate-controlled switch circuit for controlling the charge-discharge control circuit that the conducting of bidirectional switch pipe turns off, connect for the super capacitor of charging energy-storing with two-way gate-controlled switch circuit, connect with precharge and bypass switching circuit for crossing mistake pressure-controlled that pressure-controlled and controlling drives and controlling drive circuit, with cross pressure-controlled and control the reference circuit for generation of reference voltage that drive circuit and charge-discharge control circuit connect.
Preferably, the input of described rectification circuit connects current transformer.
Preferably, rectification circuit is made up of rectifier bridge, after precharge and bypass switching circuit thereof are connected to rectification circuit; Precharge and bypass switching circuit thereof comprise diode D1, bypass enhancement mode PMOS switch pipe Q2, dividing potential drop sampling resistor R3, dividing potential drop sampling resistor R4, electrochemical capacitor C1; The V+ end of rectifier bridge and V-hold and meet bypass enhancement mode PMOS switch pipe Q2; The V+ end of rectifier bridge connects the anode of diode D1, and the negative electrode of diode D1 connects the anode of electrochemical capacitor C1, between the negative electrode that electrochemical capacitor C1 is attempted by diode D1 and ground; In parallel a component pressure sampling resistor R3, dividing potential drop sampling resistor R4 after diode D1; Precharge and bypass switching circuit thereof provide the voltage VCC at the two ends of taking from electrochemical capacitor C1 to two-way gate-controlled switch circuit, cross pressure-controlled and drive circuit, charge-discharge control circuit and reference circuit, also provide output voltage VO to failure detector simultaneously.
Preferably, two-way gate-controlled switch circuit comprises enhancement mode PMOS switch pipe Q1, drives resistance R1 and triode VT1; The source S of switching tube Q1 is connected with the anode of electrochemical capacitor C1, and drain D connects the anode of super capacitor, the collector electrode of grid G connecting triode VT1, drives resistance R1 to be connected between the grid source electrode of switching tube Q1, and the emitter-base bandgap grading of triode VT1 connects ground; The negativing ending grounding of super capacitor.
Preferably, pressure-controlled and Drive and Control Circuit thereof comprise overvoltage detection control circuit and drive circuit excessively; Overvoltage detection control circuit is made up of the resistance R2 being attempted by electrochemical capacitor C1 two ends, resistance R5 pressure sampling circuit; Drive circuit comprises integrated operational amplifier U1, resistance R7 and resistance R9; By resistance R7, output is fed back to inverting input by integrated operational amplifier U1 and form negative feedback, resistance R2 and resistance R5 is attempted by super capacitor two ends, dividing potential drop gathers the voltage V2 at super capacitor two ends to the in-phase end of integrated operational amplifier U1, compares with reference voltage Vref the drive control signal defined PMOS switch pipe Q2.
Preferably, charge-discharge control circuit comprises integrated transporting discharging U2, resistance R6, resistance R8, resistance R10, resistance R11, resistance R13, diode D3, diode D4, electric capacity C3 and integrated transporting discharging U4; Integrated transporting discharging U2 and integrated transporting discharging U4 feeds back to integrated transporting discharging U2 by resistance R8 and electric capacity C2, resistance R11 and electric capacity C3 from respective output respectively, the inverting input of integrated transporting discharging U4 forms negative feedback, and the in-phase end input of integrated transporting discharging U2 is the voltage V1 by dividing potential drop sampling resistor R3 and dividing potential drop sampling resistor R4 dividing potential drop gained; The backward end of integrated transporting discharging U2 entered resistance R10 by reference voltage Vref and inputted, and the in-phase end input of integrated transporting discharging U4 is voltage V1 equally, and backward end input is by the voltage V2 of the resistance R2 and resistance R5 dividing potential drop gained being attempted by super capacitor two ends; The negative electrode of diode D4 is connected with the output of integrated transporting discharging U2, diode D4 anode is connected with the output of integrated transporting discharging U4 by resistance R6, the anode of diode D3 is connected with the anode of diode D4, the negative electrode of diode D3 is connected to the base stage of the triode VT1 in major loop, provides drive singal.
Preferably, reference circuit comprises benchmark U3, current-limiting resistance R12 and electric capacity C4; The negative electrode of benchmark U3 connects the anode of the electrochemical capacitor C1 in pre-charge circuit and bypass switching circuit through current-limiting resistance R12, plus earth, reference edge and negative electrode connect and export the reference voltage Vref of whole power supply, reference edge through an electric capacity C4 to carry out filtering.
Relative to prior art, the utility model has following beneficial effect: the utility model is after line failure, circuit will produce transient high-current, and the electric energy that circuit taken from by current transformer is charged to pre-charge circuit by rectification circuit, then charge to super capacitor.Super capacitor stores enough energy within the of short duration time, and after line fault causes tripping operation power-off, super capacitor can discharge reverses through pre-charge circuit, provides enough electric energy to maintain the normal work of external testing circuit.Usually, during there is line fault (only tens mS), super capacitor has stored and enough can provide required electric energy to failure detector circuit.So, when not needing additional power source to power, the analog circuit of simple and stable is adopted to realize precharging circuit and super capacitor charge and discharge control, existing line fault can be overcome and detect Problems existing in the middle of self powered supply, play an important role in the application improving line fault detection self powered supply.Under normal circumstances, line current is less, and the self-powered super capacitor energy-storing power supply that this line fault detects and line fault testing device can be in resting state.
A kind of self-powered super capacitor energy-storing power supply detected for line fault of the utility model has that stored energy is large, charging current is large, speed is fast, service life cycle is long, power density is high, ultralow temperature characteristic is good and the plurality of advantages such as environmental protection, and the transient high-current that proposition utilizes line fault to produce on mode basis 3. can realize super capacitor fast charging energy storage.Compared to storage battery and lithium battery, super capacitor has lower series equivalent resistance, longer useful life, wider temperature working range, wider voltage change range, the advantage such as non-maintaining.
The utility model is when exporting when line failure, the electric current flowing through circuit increases rapidly, by current transformer power taking through rectification circuit make the voltage of pre-charge circuit very fast rise to preset value, externally can provide VCC, two-way gate-controlled switch circuit is opened super capacitor and is started charging energy-storing subsequently.After line fault causes switch trip, super capacitor starts electric discharge, provides required electric energy to pre-charge circuit and other checkout equipments.When not needing to provide additional power source, can be stable run on for a long time in the middle of line fault detection, realizes detecting self-powered requirement to line fault.
Accompanying drawing explanation
Fig. 1 is the self powered supply theory diagram of fault detect;
Fig. 2 is the schematic diagram of fault detect self powered supply circuit.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Refer to shown in Fig. 1, a kind of self-powered super capacitor energy-storing power supply detected for line fault of the utility model, the self powered supply circuit of fault detect is connected between current transformer and super capacitor, comprise rectification circuit 1, connect with rectification circuit 1 for provide power supply to export and overvoltage protection be precharge and bypass switching circuit 2, with precharge and the two-way two-way gate-controlled switch circuit 3 for energy storage discharge and recharge connected of bypass switching circuit 2, connect with two-way gate-controlled switch circuit 3 for controlling the charge-discharge control circuit 5 that the conducting of bidirectional switch pipe turns off, connect with two-way gate-controlled switch circuit 3 is super capacitor 7 for charging energy-storing, connect with precharge and bypass switching circuit 2 for crossing mistake pressure-controlled that pressure-controlled and controlling drives and controlling drive circuit 4, with cross pressure-controlled and control the reference circuit 6 for generation of reference voltage that drive circuit 4 and charge-discharge control circuit 5 connect.While precharging circuit and bypass switching circuit 2 provide VCC to two-way gate-controlled switch circuit 3, mistake pressure-controlled and drive circuit 4, charge-discharge control circuit 5, reference circuit 6, also externally failure detector provides output voltage.
When circuit breaks down, the electric current flowing through circuit increases rapidly, the electric energy of circuit is taken from by instrument transformer, become direct current through rectification circuit 1 to charge to precharge and bypass switching circuit 2, the voltage of pre-charge circuit raises, when being elevated to preset value, charge-discharge control circuit 5 action makes the conducting of two-way gate-controlled switch circuit 3 to super capacitor 7 charging energy-storing.Cause precharge and bypass switching circuit 2 voltage drop thereof when line short fault causes during tripping operation power-off, super capacitor 7 in support power supply discharges, to reference circuit 6 and other failure detector circuit energy supplies to pre-charge circuit 2 by two-way gate-controlled switch circuit 3.Cross pressure-controlled and control drive circuit 4 for driving precharge by-pass switch road 2, prevent because super capacitor 7 charging voltage is too high and damage.
As Fig. 2 provides the circuit diagram of the utility model fault detect self powered supply circuit; Whole circuit is divided into 7 parts: rectification circuit 1, precharge and bypass switching circuit 2, two-way gate-controlled switch circuit 3, excessively pressure-controlled and control drive circuit 4, charge-discharge control circuit 5, reference circuit 6, super capacitor 7.Concrete connection is: current transformer takes from the electric energy of circuit after rectifier bridge BRIGER1, and connect bypass enhancement mode nmos switch pipe Q2 (such as IRF640), be connected in series a diode D1, in parallel a component pressure sampling resistor R3, a dividing potential drop sampling resistor R4 and other electrochemical capacitor C1 after diode D1, this part constitutes precharge and bypass switching circuit 2.Precharge and bypass switching circuit 2 supplying power for outside VCC, be supplied to integrated transporting discharging U1, U2, U4 and benchmark U3 (TL431).Enhancement mode PMOS (such as IRF9540) switching tube Q1 is connected in series after precharge and bypass switching circuit 2, component pressure sampling resistor R2, a R5 has been met after switching tube Q1, be connected to one between the grid source electrode of switching tube Q1 and drive resistance R1, the source S of switching tube Q1 is connected with the anode of electrochemical capacitor C1, drain D connects the anode of super capacitor 7 (sc), the negativing ending grounding of super capacitor 7; The collector electrode of what the grid of enhancement mode PMOS switch pipe Q1 connected the is triode VT1 of a NPN type (such as 8050), the emitter grounding of triode VT1, this part constitutes two-way gate-controlled switch circuit 3.The base drive signal of triode VT1 is by the output of integrated transporting discharging U2 (such as LM358) and the output of integrated transporting discharging U4 (such as LM358) and connect and provide.Integrated transporting discharging U2 and integrated transporting discharging U4 is respectively by resistance R8, electric capacity C2 and resistance R11, the inverting input that electric capacity C3 feeds back to integrated transporting discharging from respective output forms negative feedback, the in-phase end input of integrated transporting discharging U2 is the voltage V1 by the dividing potential drop sampling resistor R3 in major loop and dividing potential drop sampling resistor R4 dividing potential drop gained, reverse input is reference voltage Vref, the in-phase end input of integrated transporting discharging U4 is voltage V1 equally, and backward end input is the voltage V2 by the divider resistance R2 in major loop and R5 dividing potential drop gained; The negative electrode of diode D4 is connected with the output of integrated transporting discharging U2, anode is connected with the output of integrated transporting discharging U4 by resistance R6, the anode of diode D3 is connected with the anode of diode D4, the negative electrode of diode D3 is connected to the base stage of the NPN type triode VT1 in major loop, there is provided drive singal, this part is charge-discharge control circuit 5.Integrated transporting discharging U1 (such as LM358) feeds back to inverting input through resistance R7 from output and forms a negative feedback, the V2 of the in-phase end input gained that is by major loop and connecting resistance R2 and R5 dividing potential drop are sampled, backward end input is then reference voltage Vref, the drive singal of the nmos switch pipe Q2 that what output provided is then in major loop, this part constituted pressure-controlled and controlled drive circuit 4.The VCC provided by pre-charge circuit is connected to the negative electrode of benchmark U3 (TL431) by serial connection current-limiting resistance R12, the plus earth of benchmark U3, reference edge tieback is to the output of anode tap as reference voltage, export Vref, reference edge carries out filtering with receiving by an electric capacity C4 in addition, and this part is reference circuit 6.The drain electrode of what the anode of ultracapacitor 7 connected is enhancement mode switching tube Q1, what negative terminal connected is ground, is the energy storage for power supply that whole line fault detects self powered supply.Be exactly more than self powered supply 7 parts of fault detect.
Operation principle for the self-powered super capacitor energy-storing power supply that line fault detects: self-powered super capacitor energy-storing power supply the utility model being used for line fault detection, when line failure is not before causing tripping operation power-off, the electric current flowing through circuit increases rapidly, the electric energy on circuit is taken from through current transformer, after full-wave rectification BRIGR1, charge first to precharge and bypass switching circuit 1 by diode D1, now the voltage at electrochemical capacitor C1 two ends raises, charging is initial, the in-phase end of integrated transporting discharging U2 is less than the reference voltage Vref of backward end by the voltage V1 of gained of sampling, the in-phase end input voltage V1 of integrated transporting discharging U4 is higher than end of oppisite phase input voltage V2, so the output voltage of integrated transporting discharging U2 reduces, integrated transporting discharging U4 output voltage raises, the now first conducting of diode D4, the anode potential of diode D3 is dragged down, thus make triode NPN be operated in cut-off state, PMOS switch pipe Q2 not conducting, super capacitor does not charge, after the magnitude of voltage of pre-charge circuit exceedes preset value, the in-phase end voltage V1 of integrated transporting discharging U2 is higher than the reference voltage Vref of backward end, the in-phase end voltage V1 of integrated transporting discharging U4 is higher than end of oppisite phase voltage V2, integrated transporting discharging U2 output voltage raises, the voltage that integrated transporting discharging U4 exports also raises, now diode D4 ends, diode D3 conducting, triode VT1 is operated in amplification region (will be operated in saturation region subsequently), PMOS switch pipe Q2 starts conducting gradually, start to charge to super capacitor.Along with the conducting of PMOS switch pipe Q2 is by the access of super capacitor, the source potential VCC of PMOS is dragged down, now integrated transporting discharging U2 output voltage reduces, the voltage of integrated transporting discharging U4 raises, diode D4 conducting will be there is, diode D3 anode potential drags down, clamped at about 1V, now VT1 will be operated in cut-off region, switching tube Q1 not conducting, the voltage at the electrochemical capacitor C1 two ends of pre-charge circuit like this raises, will again from newly making integrated transporting discharging U2 output voltage raise, the output voltage of U4 raises, diode D4 not conducting, diode D3 conducting, triode VT1 will be operated in saturation region, switching tube Q1 is from new conducting, charge to super capacitor.Two-way gate-controlled switch circuit is in a dynamic charging process.Form operational amplifier by U1 in addition and form an overvoltage crowbar, now output voltage is not enough to driving switch pipe Q2 conducting.The voltage of pre-charge circuit and super capacitor continues to rise; when the magnitude of voltage at super capacitor two ends is increased beyond preset value; sampled voltage V2 will higher than reference voltage Vref; now integrated transporting discharging output voltage raises; U1 output voltage now raises and makes nmos switch pipe Q2 conducting; the short circuit after switching tube Q2, protect super capacitor, thus realize overvoltage protection.After circuit breaks down and causes switch trip, need to provide energy to failure detector circuit, certainly will decline causing the current potential of the electrochemical capacitor C1 of pre-charge circuit, super capacitor starts, to pre-charge circuit back discharge, to provide enough energy to failure detector circuit.
Claims (7)
1. the self-powered super capacitor energy-storing power supply detected for line fault, it is characterized in that, comprise rectification circuit (1), connect with rectification circuit (1) for providing power supply to export and the precharge of overvoltage protection and bypass switching circuit (2), with precharge and the two-way two-way gate-controlled switch circuit (3) for energy storage discharge and recharge connected of bypass switching circuit (2), connect with two-way gate-controlled switch circuit (3) for controlling the charge-discharge control circuit (5) that the conducting of bidirectional switch pipe turns off, connect with two-way gate-controlled switch circuit (3) for the super capacitor (7) of charging energy-storing, connect with precharge and bypass switching circuit (2) for crossing mistake pressure-controlled that pressure-controlled and controlling drives and controlling drive circuit (4), with cross pressure-controlled and control the reference circuit for generation of reference voltage (6) that drive circuit (4) and charge-discharge control circuit (5) connect.
2. a kind of self-powered super capacitor energy-storing power supply detected for line fault according to claim 1, is characterized in that, the input of described rectification circuit (1) connects current transformer.
3. a kind of self-powered super capacitor energy-storing power supply detected for line fault according to claim 1, it is characterized in that, rectification circuit (1) is made up of rectifier bridge, after precharge and bypass switching circuit (2) thereof are connected to rectification circuit (1); Precharge and bypass switching circuit (2) thereof comprise diode D1, bypass enhancement mode PMOS switch pipe Q2, dividing potential drop sampling resistor R3, dividing potential drop sampling resistor R4, electrochemical capacitor C1; The V+ end of rectifier bridge and V-hold and meet bypass enhancement mode PMOS switch pipe Q2; The V+ end of rectifier bridge connects the anode of diode D1, and the negative electrode of diode D1 connects the anode of electrochemical capacitor C1, between the negative electrode that electrochemical capacitor C1 is attempted by diode D1 and ground; In parallel a component pressure sampling resistor R3, dividing potential drop sampling resistor R4 after diode D1; Precharge and bypass switching circuit (2) thereof provide the voltage VCC at the two ends of taking from electrochemical capacitor C1 to two-way gate-controlled switch circuit (3), cross pressure-controlled and drive circuit (4), charge-discharge control circuit (5) and reference circuit (6), also provide output voltage VO to failure detector simultaneously.
4. a kind of self-powered super capacitor energy-storing power supply detected for line fault according to claim 3, is characterized in that, two-way gate-controlled switch circuit (3) comprises enhancement mode PMOS switch pipe Q1, drives resistance R1 and triode VT1; The source S of switching tube Q1 is connected with the anode of electrochemical capacitor C1, drain D connects the anode of super capacitor (7), the collector electrode of grid G connecting triode VT1, drives resistance R1 to be connected between the grid source electrode of switching tube Q1, and the emitter-base bandgap grading of triode VT1 connects ground; The negativing ending grounding of super capacitor (7).
5. a kind of self-powered super capacitor energy-storing power supply detected for line fault according to claim 3, it is characterized in that, pressure-controlled and Drive and Control Circuit (4) thereof comprise overvoltage detection control circuit and drive circuit excessively; Overvoltage detection control circuit is made up of the resistance R2 being attempted by electrochemical capacitor C1 two ends, resistance R5 pressure sampling circuit; Drive circuit comprises integrated operational amplifier U1, resistance R7 and resistance R9; By resistance R7, output is fed back to inverting input by integrated operational amplifier U1 and form negative feedback, resistance R2 and resistance R5 is attempted by super capacitor two ends, dividing potential drop gathers the voltage V2 at super capacitor two ends to the in-phase end of integrated operational amplifier U1, compares with reference voltage Vref the drive control signal defined PMOS switch pipe Q2.
6. a kind of self-powered super capacitor energy-storing power supply detected for line fault according to claim 5, it is characterized in that, charge-discharge control circuit (5) comprises integrated transporting discharging U2, resistance R6, resistance R8, resistance R10, resistance R11, resistance R13, diode D3, diode D4, electric capacity C3 and integrated transporting discharging U4; Integrated transporting discharging U2 and integrated transporting discharging U4 feeds back to integrated transporting discharging U2 by resistance R8 and electric capacity C2, resistance R11 and electric capacity C3 from respective output respectively, the inverting input of integrated transporting discharging U4 forms negative feedback, and the in-phase end input of integrated transporting discharging U2 is the voltage V1 by dividing potential drop sampling resistor R3 and dividing potential drop sampling resistor R4 dividing potential drop gained; The backward end of integrated transporting discharging U2 entered resistance R10 by reference voltage Vref and inputted, and the in-phase end input of integrated transporting discharging U4 is voltage V1 equally, and backward end input is by the voltage V2 of the resistance R2 and resistance R5 dividing potential drop gained being attempted by super capacitor two ends; The negative electrode of diode D4 is connected with the output of integrated transporting discharging U2, diode D4 anode is connected with the output of integrated transporting discharging U4 by resistance R6, the anode of diode D3 is connected with the anode of diode D4, the negative electrode of diode D3 is connected to the base stage of the triode VT1 in major loop, provides drive singal.
7. a kind of self-powered super capacitor energy-storing power supply detected for line fault according to claim 6, it is characterized in that, reference circuit (6) comprises benchmark U3, current-limiting resistance R12 and electric capacity C4; The negative electrode of benchmark U3 connects the anode of the electrochemical capacitor C1 in pre-charge circuit and bypass switching circuit (2) through current-limiting resistance R12, plus earth, reference edge and negative electrode connect and export the reference voltage Vref of whole power supply, reference edge through an electric capacity C4 to carry out filtering.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520002950.8U CN204376516U (en) | 2015-01-04 | 2015-01-04 | A kind of self-powered super capacitor energy-storing power supply detected for line fault |
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| CN201520002950.8U CN204376516U (en) | 2015-01-04 | 2015-01-04 | A kind of self-powered super capacitor energy-storing power supply detected for line fault |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104578366A (en) * | 2015-01-04 | 2015-04-29 | 国家电网公司 | Self-powered super capacitor energy-storage power source for detecting line faults |
| CN106787006A (en) * | 2017-02-28 | 2017-05-31 | 威胜电气有限公司 | Super capacitor charging circuit, charging method and its transient state record wave mode fault detector |
| CN106787085A (en) * | 2016-12-29 | 2017-05-31 | 福建奥通迈胜电力科技有限公司 | Circuit and method that a kind of fast energy for fault detector is collected |
| CN107860968A (en) * | 2017-12-08 | 2018-03-30 | 湖南威铭能源科技有限公司 | Power consumption self-diagnostic circuit, power consumption self-diagnosing method and its measuring instrument |
| CN109298278A (en) * | 2018-08-16 | 2019-02-01 | 杭州华春科技有限公司 | Alignment device for phase mutual inductance type electric energy meter |
| CN109617385A (en) * | 2019-02-12 | 2019-04-12 | 武汉永力睿源科技有限公司 | A kind of capacitor pre-charge circuit |
| CN109782131A (en) * | 2019-01-28 | 2019-05-21 | 浙江工业大学 | A kind of near-earth formula self-powered overhead transmission line fault detection means |
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- 2015-01-04 CN CN201520002950.8U patent/CN204376516U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104578366A (en) * | 2015-01-04 | 2015-04-29 | 国家电网公司 | Self-powered super capacitor energy-storage power source for detecting line faults |
| CN104578366B (en) * | 2015-01-04 | 2017-06-16 | 国家电网公司 | A kind of confession electricity super capacitor energy-storing power supply for line fault detection |
| CN106787085A (en) * | 2016-12-29 | 2017-05-31 | 福建奥通迈胜电力科技有限公司 | Circuit and method that a kind of fast energy for fault detector is collected |
| CN106787085B (en) * | 2016-12-29 | 2020-05-22 | 福建奥通迈胜电力科技有限公司 | Circuit and method for rapid energy collection of fault indicator |
| CN106787006A (en) * | 2017-02-28 | 2017-05-31 | 威胜电气有限公司 | Super capacitor charging circuit, charging method and its transient state record wave mode fault detector |
| CN107860968A (en) * | 2017-12-08 | 2018-03-30 | 湖南威铭能源科技有限公司 | Power consumption self-diagnostic circuit, power consumption self-diagnosing method and its measuring instrument |
| CN109298278A (en) * | 2018-08-16 | 2019-02-01 | 杭州华春科技有限公司 | Alignment device for phase mutual inductance type electric energy meter |
| CN109782131A (en) * | 2019-01-28 | 2019-05-21 | 浙江工业大学 | A kind of near-earth formula self-powered overhead transmission line fault detection means |
| CN109617385A (en) * | 2019-02-12 | 2019-04-12 | 武汉永力睿源科技有限公司 | A kind of capacitor pre-charge circuit |
| CN109617385B (en) * | 2019-02-12 | 2023-12-15 | 武汉永力睿源科技有限公司 | Capacitor precharge circuit |
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Granted publication date: 20150603 |