CN112332550A - Passive energy-taking device for input and output of transformer neutral line width range - Google Patents
Passive energy-taking device for input and output of transformer neutral line width range Download PDFInfo
- Publication number
- CN112332550A CN112332550A CN202011134472.8A CN202011134472A CN112332550A CN 112332550 A CN112332550 A CN 112332550A CN 202011134472 A CN202011134472 A CN 202011134472A CN 112332550 A CN112332550 A CN 112332550A
- Authority
- CN
- China
- Prior art keywords
- module
- diode
- terminal
- capacitor
- energy
- 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
- 230000007935 neutral effect Effects 0.000 title claims abstract description 16
- HEZMWWAKWCSUCB-PHDIDXHHSA-N (3R,4R)-3,4-dihydroxycyclohexa-1,5-diene-1-carboxylic acid Chemical compound O[C@@H]1C=CC(C(O)=O)=C[C@H]1O HEZMWWAKWCSUCB-PHDIDXHHSA-N 0.000 claims abstract description 33
- 238000001914 filtration Methods 0.000 claims abstract description 11
- 239000003990 capacitor Substances 0.000 claims description 36
- 238000012544 monitoring process Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 5
- 238000012806 monitoring device Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000087 stabilizing effect Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
Images
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
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/04—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for transformers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a passive power taking device for input and output of a neutral line width range of a transformer, which comprises: the energy-taking coil module, the rectifying module, the overcurrent control module, the control module M, the filtering module and the DCDC boosting module. The on-off of a transistor in the module is controlled by a PWM pulse signal g (t), and when g (t) is equal to 1, the transistor S is switched1、S2Conducting, and short-circuiting the rear-stage circuit; when g (t) is 0, the transistor S is switched1、S2Off, terminal load RLNormally absorb electrical energy.
Description
Technical Field
The invention belongs to the technical field of electric power, relates to a passive power taking device for a neutral line of a transformer, and particularly relates to an inductive power taking device for input and output of the neutral line of the transformer in a wide range.
Background
Currently, in order to ensure safe and reliable operation of a power system, real-time monitoring needs to be performed on equipment of a power grid, and a transformer, which is an important equipment in the power system, bears important parts of energy transmission and energy conversion in the power grid, once a fault occurs, large-area power failure is caused, and great influence and loss are generated on the power system. Therefore, it is very important to monitor the transformer in real time. Because the real-time monitoring of the transformer needs to provide continuous energy for the monitoring equipment, the existing passive energy-taking technology mainly adopts solar energy and a storage battery to supply power to the monitoring equipment. However, the output of the solar power supply is easily affected by factors such as illumination intensity and weather, and is limited by the installation position of the transformer, and a large solar panel cannot be installed on the site; the situation that the energy supply is insufficient easily occurs in solar power supply, the energy supply requirement of real-time monitoring equipment of the transformer cannot be met, and the storage battery needs to be replaced frequently. Therefore, the above method cannot meet the requirement of all-weather and long-term stable energy supply for the monitoring equipment. The passive induction power taking device for the neutral line of the transformer has the characteristics of adaptability to various severe weathers, all-weather stable and reliable power supply and the like, so that the defects of the traditional power supply mode are overcome, and the passive induction power taking device becomes an ideal choice for solving the problem of energy supply of real-time monitoring equipment of the transformer. However, when an asymmetric short-circuit fault occurs in the transmission line, the transformer neutral current may suddenly increase. In practice, it is necessary to ensure that the transformer neutral line can provide enough power to drive the online monitoring device during normal operation, and it is necessary to ensure that the power-taking device can still obtain stable output and overvoltage protection when the transformer neutral line has a large current, so as to provide a continuous and stable power supply for the transformer terminal monitoring device, which is a difficult point faced in the prior art.
Object of the Invention
The purpose of the invention is to solve the problems of the passive power taking device in the prior art, solve the energy problem required by the current transformer during real-time monitoring, and reduce the design of other circuits by adopting the scheme of passive power taking of the neutral line of the transformer. In addition, the problem that when the current of a neutral line of the transformer is suddenly increased due to the fault of a power transmission line or the transformer is solved, the overvoltage protection of a load side is realized by controlling the on-off of a transistor through PWM (pulse width modulation) pulse.
Disclosure of Invention
According to one aspect of the present invention, there is provided a passive energy extracting device for input and output of a transformer neutral line width range, the passive energy extracting device comprising: the energy-taking coil module, the rectifying module, the overcurrent control module, the control module M, the filtering module and the DCDC boosting module;
wherein the passive energy-taking device comprises 8 diodes, namely a first diode D1A second diode D2A third diode D3A fourth diode D4A fifth diode D5A sixth diode D6The seventh diode D7An eighth diode D8Wherein D is6Is connected in series to D4Conducting terminal of, D7Is connected in series to D5Conducting terminal of, D6And D4Formed serial branch and D7And D5The formed serial branches are mutually connected in parallel; d1Is connected to D2By end of, D2Is connected to D6、D7Conducting terminal of, D1Is connected to D3Conducting terminal of, D3Is passed through a terminal load RLIs connected to D2Conducting terminal of, D4、D5Is connected to D8The conducting terminal of (1); d8Cut-off terminal of (D)2Across the first capacitor C included in the filter module1；
The rectifying module comprises a fourth diode D4A fifth diode D5A sixth diode D6The seventh diode D7；
The overcurrent control module comprises a switch tube S1、S2The overcurrent control module is connected to a control module M, and the control module M is respectively connected with the overcurrent control module and the DCDC boost module;
the filter module is a capacitor filter module and comprises a first capacitor C1；
The DCDC boost module comprises a second capacitor C2A third capacitor C3A second inductor L2A third inductor L3A first diode D1A second diode D2A third diode D3；
The passive energy taking coil module is connected with the alternating current side of the rectifying module;
the direct current side of the rectifying module is connected with the over-current control module;
the overcurrent control module is connected to the capacitance filtering module, the filtering module is connected to the DCDC boosted circuit module, and the output end of the DCDC boosted circuit module is connected with the terminal equipment.
Further, the anode of the energy-taking coil module and the fourth diode D of the rectifying module4The conducting terminal of the sixth diode D6The cut-off ends of the connecting rods are connected; the negative electrode of the energy taking coil and a fifth diode D of the rectifying module5Conducting terminal of, seventh diode D7The cut-off ends of the connecting rods are connected;
fourth diode D of the rectifier module4And a cut-off terminal of the fifth diode D5A cut-off end of the first switching tube S1Is connected to the emitter of a second diode D2And the first capacitor C of the filter module1Output terminal of the first diode D2A second switch tube S2Collector electrode of, and first diode D1Cut-off terminal of, third capacitor C3Output terminal, terminal load RLThe negative electrodes are connected;
first switch tube S of overcurrent control module1Collector and eighth diode D8Are connected, an eighth diode D8The cut-off terminal and the first inductor L1Are connected with the input end of the power supply;
first capacitor C of filtering module1And the first inductor L of the DCDC boost module1The input ends of the two-way valve are connected;
first inductor L of DCDC boost module1Output end and second switch tube S2Emitter electrode, second capacitor C2Are connected with the input end of the power supply; second capacitor C2Output terminal of and the first diode D1The conducting terminal of the third diode D3The conducting terminal and the second inductor L2Are connected with the input end of the power supply; a third diode D3And the third capacitor C3Input terminal, terminal device RLThe positive electrodes of the two electrodes are connected; first inductance L1The conducting terminal and the second switch tube S2Collector electrode of, and second inductor L2Output terminal of, third capacitor C3Output terminal, terminal device RLAre connected with each other.
According to another aspect of the present invention, there is provided a control method of the passive energy obtaining apparatus, including: controlling the switching transistor S by means of a PWM pulse timing control signal g (t)1、S2Make-and-break;
when g (t) is 1, the transistor S is switched1、S2Conducting, and short-circuiting the rear-stage circuit;
when g (t) is 0, the transistor S is switched1、S2Off, terminal load RLNormally absorb electrical energy.
Preferably, the duty ratio D of the PWM pulse timing control signal is defined by dividing the current signal under the rated operation condition by the current signal collected under the actual operation condition;
when the actual current is larger than the rated current, the duty ratio D is smaller than 1, the on-time of the transistor is longer relative to the off-time, the generation of large current of a transformer neutral wire is inhibited, and the monitoring equipment is prevented from being damaged by overvoltage on the secondary side;
when the actual current is smaller than the rated current and the duty ratio D is larger than 1, the boost ratio of the DCDC boost module is increased by the control module M, so that the voltage at the output end of the DCDC boost module reaches the rated voltage required by the monitoring device.
Preferably, the gain of the DCDC boost module is
Where D is the duty cycle of the pulse control signal g (t).
Drawings
Fig. 1 is a block diagram of a passive energy-taking device according to the present invention.
Fig. 2 is a schematic circuit diagram of the passive energy-taking device according to the present invention.
Fig. 3 is a timing diagram of a control circuit of the passive power-taking device according to the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Example 1
According to an embodiment of the present invention, a block diagram of a passive energy-taking device capable of wide-range input and output is shown in fig. 1, and the passive energy-taking device includes an energy-taking coil module, a rectifying module, an overcurrent control module, and a DCDC boost module, wherein the passive energy-taking coil is connected to an ac side of the rectifying module, a dc side of the rectifying module is connected to the overcurrent control module, the overcurrent control module is connected to a filtering module, the filtering module is connected to a DCDC boost circuit, and an output end of the DCDC boost circuit is connected to a transformer monitoring terminal device.
In the present embodiment, the rectifying module includes 8 diodes, i.e., first to eighth diodes D1、D2、D3、D4、D5、D6、D7、D8(ii) a The protection module comprises two switching tubes S1、S2；
The circuit schematic of the passive energy-taking device is shown in figure 2,the anode of the energy-taking coil module and the fourth diode D of the rectifier module4The conducting terminal of the sixth diode D6The cut-off ends of the connecting rods are connected; negative pole of the energy-taking coil and a fifth diode D of the rectifying module5Conducting terminal of, seventh diode D7The cut-off ends of the connecting rods are connected.
Fourth diode D of the rectifier module4And a cut-off terminal of the fifth diode D5A cut-off end of the first switching tube S1Is connected to the emitter of a second diode D2And the first capacitor C of the capacitor filter module1Output terminal of the first diode D2A second switch tube S2Collector electrode of, and first diode D1Cut-off terminal of the capacitor filter module and a third capacitor C of the capacitor filter module3Output terminal, terminal load RLAre connected with each other.
First switch tube S of overcurrent control module1Collector and eighth diode D8The conducting ends are connected; eighth diode D8The cut-off terminal and the first inductor L1Are connected.
First capacitor C of filtering module1And the first inductor L of the DCDC boost module1Is connected to the input terminal of the controller.
First inductor L of DCDC boost module1Output end and second switch tube S2Emitter electrode, second capacitor C2Are connected with the input end of the power supply; second capacitor C2Output terminal of and the first diode D1The conducting terminal of the third diode D3The conducting terminal and the second inductor L2Are connected with the input end of the power supply; a third diode D3And the third capacitor C3Input terminal, terminal device RLThe positive electrodes of the two electrodes are connected; first inductance L1The conducting terminal and the second switch tube S2Collector electrode of, and second inductor L2Output terminal of, third capacitor C3Output terminal, terminal device RLAre connected with each other.
As shown in fig. 3, the control signal g (t) controls the on/off of the crystal, and when the control signal g (t) is equal to 1, the transistor turns on the post-stage circuitWill be short-circuited, and when the control signal g (t) is equal to 0, the transistor will turn off the load and normally absorb the electric energy, and the voltage stabilizing effect is achieved for the following stage circuit by switching the transistor state. Based on the electromagnetic induction principle of the current transformer, the invention establishes a circuit model which can release redundant energy under the condition of power allowance, and protects the safe operation of the load. The transistor is controlled by utilizing the PWM pulse signal so as to play a role of protecting a subsequent circuit; and setting the duty ratio of the converted PWM signal by dividing the current signal under the rated operation condition and the current signal collected under the actual operation condition. When the actual current is larger than the rated current, the duty ratio is smaller than 1, the conduction time of the transistor is longer, and the purpose of preventing the monitoring equipment from being damaged by overvoltage on the secondary side caused by the large current on the neutral line of the transformer is achieved; when the actual current is smaller than the rated current, the duty ratio is larger than 1, and at this time, the boost ratio of the DCDC boost circuit needs to be increased through the control module, so that the boost ratio reaches the rated voltage of the monitoring device. In addition, the gain of the DCDC booster circuit of the invention is
The boosting capacity is far higher than that of the traditional DCDC boosting circuit, and the effect of wide-range output can be realized.
The power supply path for the terminal equipment is also provided with a boosting module, the boosting module comprises a capacitor, an inductor and a diode so as to ensure that the capacitor can provide normal working voltage for the terminal equipment under a low current state to ensure the normal operation of the terminal equipment, and the gain of the boosting module is
The boosting capacity is far higher than that of the traditional DCDC boosting circuit, and the effect of wide-range output can be realized.
The over-current protection module is arranged between the rectification filter module and the DC-DC voltage stabilizing module and comprises a current sampling loop, the over-current protection module is connected with the control module M, the control module M controls the on-off of the MOS tube leakage loop according to the current value detected in the current sampling loop, and the transistor is controlled by utilizing the PWM pulse signal so as to play a role in protecting a subsequent circuit; the duty ratio of the PWM signal is adaptively set and converted by setting a fitting function, so that the effect of adapting to large-range current is achieved.
In the control circuit module, the duty ratio can be adjusted by adjusting the size of the carrier wave, the maximum value of the modulation wave is set to be 1, the minimum value is set to be 0, and the value range of the carrier wave (Z) is set to be 0-1 in the same way; and meanwhile, the duty ratio is 1 when the current is started, when the control signal g (t) is 1, the transistor is switched on, the rear-stage circuit is short-circuited, when the control signal g (t) is 0, the transistor is switched off, the load normally absorbs electric energy, and the voltage stabilizing effect is achieved on the rear-stage circuit by switching the state of the transistor.
In summary, the invention establishes a circuit model capable of releasing excess energy under the condition of power allowance based on the electromagnetic induction principle of the current transformer, and protects the safe operation of the load. The transistor is controlled by utilizing the PWM pulse signal so as to play a role of protecting a subsequent circuit; the duty ratio of the PWM signal is set and changed in a self-adaptive mode by dividing the current signal under the rated operation condition and the current signal collected under the actual operation condition, and the effect of adapting to large-range current is achieved. In addition, the gain of the DCDC booster circuit of the invention is
The boosting capacity is far higher than that of the traditional DCDC boosting circuit, and the effect of wide-range output can be realized.
The invention has the following beneficial effects:
1. when the sampling current of the energy taking coil module is large, continuous charging of a rear-stage circuit is avoided through switching on and switching off of the first switch, the rear-stage circuit works in a safety range, the voltage stabilizing performance of the energy taking device is guaranteed, and when the output current of the energy taking coil module is prevented from being large, load voltage fluctuation is caused due to high output power, and equipment damage is avoided.
2. The induction power taking device comprises a DCDC booster circuit capable of flexibly outputting, and when the rated voltage of the terminal equipment changes or the output voltage of the front-stage circuit is reduced, the DCDC booster circuit can flexibly output, so that the stability and the flexibility of circuit output are improved.
Claims (7)
1. A passive energy-taking device for input and output of a transformer neutral line width range is characterized by comprising: the energy-taking coil module, the rectifying module, the overcurrent control module, the control module M, the filtering module and the DCDC boosting module;
wherein the passive energy-taking device comprises 8 diodes, namely a first diode D1A second diode D2A third diode D3A fourth diode D4A fifth diode D5A sixth diode D6The seventh diode D7An eighth diode D8Wherein D is6Is connected in series to D4Conducting terminal of, D7Is connected in series to D5Conducting terminal of, D6And D4Formed serial branch and D7And D5The formed serial branches are mutually connected in parallel; d1Is connected to D2By end of, D2Is connected to D6、D7Conducting terminal of, D1Is connected to D3Conducting terminal of, D3Is passed through a terminal load RLIs connected to D2Conducting terminal of, D4、D5Is connected to D8The conducting terminal of (1); d8Cut-off terminal of (D)2Across the first capacitor C included in the filter module1；
The rectifying module comprises a fourth diode D4A fifth diode D5A sixth diode D6The seventh diode D7；
The overcurrent control module comprises a switch tube S1The overcurrent control module is connected to a control module M, and the control module is respectively connected with the overcurrent control module and the DCDC boosting module;
the filter module is a capacitor filter module and comprises a first capacitor C1；
The DCDC boost module comprises a second capacitor C2A third capacitor C3A second inductor L2A third inductor L3First and secondPolar tube D1A second diode D2A third diode D3；
The passive energy taking coil module is connected with the alternating current side of the rectifying module;
the direct current side of the rectifying module is connected with the over-current control module;
the overcurrent control module is connected to the capacitance filtering module, the filtering module is connected to the DCDC boosted circuit module, and the output end of the DCDC boosted circuit module is connected with the terminal equipment.
2. The passive energy-taking device according to claim 1, wherein the anode of the energy-taking coil module and the fourth diode D of the rectifying module4The conducting terminal of the sixth diode D6The cut-off ends of the connecting rods are connected; the negative electrode of the energy taking coil and a fifth diode D of the rectifying module5Conducting terminal of, seventh diode D7The cut-off ends of the connecting rods are connected.
3. The passive energy-taking device according to claim 2, wherein the fourth diode D of the rectifying module4And a cut-off terminal of the fifth diode D5A cut-off end of the first switching tube S1Is connected to the emitter of a second diode D2And the first capacitor C of the filter module1Output terminal of the first diode D2A second switch tube S2Collector electrode of, and first diode D1Cut-off terminal of, third capacitor C3Output terminal, terminal load RLAre connected with each other.
4. The passive energy-taking device according to claim 3, wherein the first switch tube S of the overcurrent control module1Collector and eighth diode D8Are connected, an eighth diode D8The cut-off terminal and the first inductor L1Are connected with the input end of the power supply;
first capacitor C of the filter module1And the input terminal of the DC amplifierFirst inductance L of the voltage module1The input ends of the two-way valve are connected;
first inductor L of DCDC boost module1Output end and second switch tube S2Emitter electrode, second capacitor C2Are connected with the input end of the power supply; second capacitor C2Output terminal of and the first diode D1The conducting terminal of the third diode D3The conducting terminal and the second inductor L2Are connected with the input end of the power supply; a third diode D3And the third capacitor C3Input terminal, terminal device RLThe positive electrodes of the two electrodes are connected; first inductance L1The conducting terminal and the second switch tube S2Collector electrode of, and second inductor L2Output terminal of, third capacitor C3Output terminal, terminal device RLAre connected with each other.
5. A method for controlling a passive energy-extracting device according to any of the preceding claims 1-4, characterized in that the switching transistor S is controlled by a PWM pulse timing control signal g (t)1、S2Make-and-break of (1):
when g (t) is 1, the transistor S is switched1、S2Conducting, and short-circuiting the rear-stage circuit;
when g (t) is 0, the transistor S is switched1、S2Off, terminal load RLNormally absorb electrical energy.
6. The control method according to claim 5, characterized in that the duty cycle D of the PWM pulse timing control signal is defined by dividing a current signal in a rated operation condition by a current signal collected in an actual operation condition;
when the actual current is larger than the rated current, the duty ratio D is smaller than 1, the on-time of the transistor is longer relative to the off-time, the generation of large current of a transformer neutral wire is inhibited, and the monitoring equipment is prevented from being damaged by overvoltage on the secondary side;
when the actual current is smaller than the rated current and the duty ratio D is larger than 1, the boost ratio of the DCDC boost module is increased by the control module M, so that the voltage at the output end of the DCDC boost module reaches the rated voltage required by the monitoring device.
7. The control method of claim 6, wherein the gain of the DCDC boost module is
Where D is the duty cycle of the pulse control signal g (t).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011134472.8A CN112332550A (en) | 2020-10-21 | 2020-10-21 | Passive energy-taking device for input and output of transformer neutral line width range |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011134472.8A CN112332550A (en) | 2020-10-21 | 2020-10-21 | Passive energy-taking device for input and output of transformer neutral line width range |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112332550A true CN112332550A (en) | 2021-02-05 |
Family
ID=74311121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011134472.8A Pending CN112332550A (en) | 2020-10-21 | 2020-10-21 | Passive energy-taking device for input and output of transformer neutral line width range |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112332550A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024022538A1 (en) * | 2022-07-25 | 2024-02-01 | 国网智能电网研究院有限公司 | Dual-magnetic-field energy acquisition sensor and boost converter thereof, control method and apparatus, and storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104767187A (en) * | 2015-04-15 | 2015-07-08 | 西南交通大学 | High-voltage direct-current breaker based on Sepic converter topology and fault removal method thereof |
| CN105515065A (en) * | 2016-01-06 | 2016-04-20 | 国网重庆市电力公司江北供电分公司 | Wide range input self adjusting power transmission line induction power taking device |
| CN105896622A (en) * | 2016-05-10 | 2016-08-24 | 国网新疆电力公司经济技术研究院 | High-reliability inductive energy taking power supply for power transmission line |
| CN106487101A (en) * | 2016-09-13 | 2017-03-08 | 中国农业大学 | A kind of current transformer energy taking device based on load control and method |
| CN206850530U (en) * | 2017-04-15 | 2018-01-05 | 三峡大学 | A kind of high voltage induction electricity getting device of doubleway output |
-
2020
- 2020-10-21 CN CN202011134472.8A patent/CN112332550A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104767187A (en) * | 2015-04-15 | 2015-07-08 | 西南交通大学 | High-voltage direct-current breaker based on Sepic converter topology and fault removal method thereof |
| CN105515065A (en) * | 2016-01-06 | 2016-04-20 | 国网重庆市电力公司江北供电分公司 | Wide range input self adjusting power transmission line induction power taking device |
| CN105896622A (en) * | 2016-05-10 | 2016-08-24 | 国网新疆电力公司经济技术研究院 | High-reliability inductive energy taking power supply for power transmission line |
| CN106487101A (en) * | 2016-09-13 | 2017-03-08 | 中国农业大学 | A kind of current transformer energy taking device based on load control and method |
| CN206850530U (en) * | 2017-04-15 | 2018-01-05 | 三峡大学 | A kind of high voltage induction electricity getting device of doubleway output |
Non-Patent Citations (1)
| Title |
|---|
| ONUR KIRCIOĞLU等: ""Modeling and analysis of DC-DC SEPIC converter with coupled inductors", 《2016 INTERNATIONAL SYMPOSIUM ON INDUSTRIAL ELECTRONICS (INDEL)》, 29 December 2016 (2016-12-29), pages 1 - 5 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024022538A1 (en) * | 2022-07-25 | 2024-02-01 | 国网智能电网研究院有限公司 | Dual-magnetic-field energy acquisition sensor and boost converter thereof, control method and apparatus, and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201185355Y (en) | High voltage line induction electricity-taking apparatus | |
| CN1332489C (en) | Multifunctional adjuster for quality of voltage in low voltage system | |
| CN103151829A (en) | Two-channel direct-current (DC) output waterproof constant current power supply | |
| CN103227515A (en) | Non-contact self-powered power supply for overhead high voltage line | |
| CN112886718A (en) | Resonance compensation type current transformer induction power taking system | |
| CN108539872A (en) | A kind of electricity getting system based on power line load electric current | |
| CN105792438A (en) | Buck type single-stage LED drive circuit of unity power factor | |
| CN109327136B (en) | Three-level boosting type direct current conversion topology based on coupling winding unit | |
| CN112332550A (en) | Passive energy-taking device for input and output of transformer neutral line width range | |
| CN201584755U (en) | Current switching-on device for neutral point direct-current blocking equipment of transformer | |
| CN110323667B (en) | High-power laser driving power supply device | |
| CN106410981A (en) | Busbar electricity getting circuit of high-voltage side of current transformer | |
| CN108377098B (en) | Constant voltage output circuit of two-stage input inverter power supply | |
| CN102946186A (en) | Active harmonic suppressing mechanism | |
| CN112564061B (en) | Branch protection device for direct current system of transformer substation and protection method thereof | |
| CN203301209U (en) | Charging device for super capacitor | |
| CN104467420A (en) | Voltage stabilizing circuit of switching power supply | |
| CN112054590B (en) | Capacitor direct-current guarantee power supply | |
| CN201639482U (en) | High-voltage isolation multiple-output IGCT driving power supply | |
| CN211830581U (en) | High-transformation-ratio bidirectional direct current conversion circuit | |
| CN201438672U (en) | DC-DC direct current power circuit | |
| CN204408192U (en) | A kind of switch power voltage-stabilizing circuit | |
| CN208226868U (en) | A kind of circuit of reversed excitation | |
| CN111224550B (en) | DC transformer based on cascade DAB structure | |
| CN204244076U (en) | Ultra-wide input voltage DC-DC power source |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |