CN202197094U - Power transmission line intelligent fault monitoring coupling power supply protective device - Google Patents
Power transmission line intelligent fault monitoring coupling power supply protective device Download PDFInfo
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- CN202197094U CN202197094U CN2011202482477U CN201120248247U CN202197094U CN 202197094 U CN202197094 U CN 202197094U CN 2011202482477 U CN2011202482477 U CN 2011202482477U CN 201120248247 U CN201120248247 U CN 201120248247U CN 202197094 U CN202197094 U CN 202197094U
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 19
- 230000001808 coupling Effects 0.000 title claims abstract description 8
- 238000010168 coupling process Methods 0.000 title claims abstract description 8
- 238000005859 coupling reactions Methods 0.000 title claims abstract description 8
- 230000001681 protective Effects 0.000 title claims description 15
- 238000004804 winding Methods 0.000 claims abstract description 14
- 230000001052 transient Effects 0.000 claims abstract description 13
- 230000001629 suppression Effects 0.000 claims description 11
- 230000000087 stabilizing Effects 0.000 claims description 8
- 230000002457 bidirectional Effects 0.000 claims description 2
- 238000006243 chemical reactions Methods 0.000 claims description 2
- 230000001131 transforming Effects 0.000 abstract 5
- 239000003112 inhibitors Substances 0.000 abstract 1
- 230000002401 inhibitory effects Effects 0.000 abstract 1
- 230000000630 rising Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical group data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
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Abstract
Description
Affiliated technical field
The utility model relates to a kind of apparatus for protecting power supply, especially transmission line detect, the protective device of monitoring device coupling power, mainly be to be used for solving transmission of electricity bus impulse current and power-supply system overvoltage to the hurtful problem of power-supply system.
Background technology
At present, be used for detection, the monitoring device of ultra-high-tension power transmission line, much take directly to get the supply power mode of ability from the coupling of transmission of electricity bus.This power-supply system is installed the coil that has special iron core on transmission pressure, through the mode of electromagnetic induction electric energy is taken out from high voltage bus, supplies with detection, monitoring device use through the constant voltage of a series of conversion output then.But; The design difficulty of this power-supply system is; When the transmission of electricity bus flows through impulse current when lightning current, serious short circuit (for example short-circuit impact electric current); Induce great induced voltage at secondary side in the utmost point short time,, thereby cause the infringement of power-supply system considerably beyond the power-supply system input voltage range.
In addition; Get can coil output voltage raise with the rising of transmission line operating current; Yet the transmission line running current changes in a big way at one usually; When transmission current is excessive cause get can coil induced voltage too high, make rear end DC/DC translation circuit input voltage also can cause damage when exceeding its permissible value to power-supply system.
Summary of the invention
In order to solve the infringement that impulse current and overvoltage cause power-supply system; The utility model provides a kind of apparatus for protecting power supply; Utilize this device can monitor the secondary side induced voltage in real time; When power-supply system suffers impulse current, utilize a front-end protection circuit that the input voltage of power-supply system is limited within the safe voltage scope; Utilize a leadage circuit, when the power-supply system overvoltage, guarantee system safety.
The utility model solves the technical scheme that its technical problem adopted: getting and can a surge protection circuit be set the coil output; The surge protection circuit by one with get can coil winding-direction opposite coil, a Transient Voltage Suppressor and resistance be composed in series; Transient Voltage Suppressor has the bidirectional protective effect; Transient Voltage Suppressor is connected with power consumption resistance; After the series connection more respectively with get can coil output and an output of reverse winding link to each other, the other end of reverse winding links to each other with the other end of getting the ability coil, reverse winding is identical with the number of turn of getting the ability coil and around on the contrary; Reverse winding with get the terminal that can coil directly links to each other and must guarantee to be non-same polarity, the surge protection circuit is with to get ability coil output parallelly connected.When the transmission line electric current was in normal range of operation, Transient Voltage Suppressor was in off state, can not influence the normal operation of power-supply system, and its voltage can coil output voltage and reverse winding output voltage sum for getting.When transmission line suffers impulse current; Get ability coil, the rising of reverse winding output end voltage; Make the Transient Voltage Suppressor conducting, get ability circuit and surge protection circuit and form the closed-loop path, thereby the output voltage that will get the ability coil is controlled within the safe range; Utilize the resistance in the surge protection circuit that energy consumption is fallen simultaneously, avoid coil overheated.
A leadage circuit is set between rectification circuit and DC/DC translation circuit; Vent discharge routing zener, MOSFET and resistance are formed; MOSFET selects N channel enhancement P-MOSFET for use, and the MOSFET drain electrode seals in a power consumption resistance and receives DC/DC translation circuit input, and two divider resistances of voltage stabilizing didoe series connection also connect DC/DC translation circuit input; The grid of MOSFET is received between two divider resistances, and leadage circuit is parallelly connected with the input of DC/DC translation circuit.When the input terminal voltage rising of DC/DC translation circuit causes the grid-source voltage of MOSFET to surpass cut-in voltage, the MOSFET conducting, leadage circuit plays a role, and excess energy is released through power consumption resistance.When the input terminal voltage of DC/DC translation circuit was within safe range, MOSFET and voltage stabilizing didoe all turn-offed, and leadage circuit can not have any impact to power-supply system.
The utility model utilizes front end surge protection circuit and leadage circuit to constitute dual-electrode protecting circuit; Utilize front end surge protection circuit to deal with the infringement that the impulse current in the inlet highway causes power-supply system; Utilize leadage circuit to deal with the overvoltage infringement of power-supply system; Simple in structure, protection is reliable.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further specified.
Fig. 1 is the functional-block diagram of power supply and protective device.
Fig. 2 is a front end impulse current protective circuit.
Fig. 3 is the overpressure vent circuit.
Fig. 4 is Fig. 2, Fig. 3 whole structure figure in Fig. 1
1. iron cores among the figure, 2. just around to get can coil, 3. back-roll to impulse current protection coil, 4. transmission pressure; 5. Transient Voltage Suppressor, 6. power consumption resistance, 7. voltage stabilizing didoe, 8. divider resistance; 9. divider resistance, 10. protective resistance, 11.MOSFET, 12. power consumption resistance.
Embodiment
In Fig. 1, the output termination current rectifying and wave filtering circuit input of surge protection circuit, the output of current rectifying and wave filtering circuit connects leadage circuit, electric capacity of voltage regulation, DC/DC translation circuit, and leadage circuit, electric capacity of voltage regulation, DC/DC translation circuit three constitute parallel connection.The stable voltage of DC/DC translation circuit output supplies to detect, monitoring device uses.
In Fig. 2; Transient Voltage Suppressor (5), power consumption resistance (6) and reverse winding (3) series connection; And be connected to get can coil the output of (2); Coil (2), coil (3) take the number of turn identical and around on the contrary, coil (1) adopts the special loop coil that has air gap, the protection of the transient state induced voltage that the shutoff through Transient Voltage Suppressor (5) and conducting realization cause impulse current on the bus.
In Fig. 3; Power consumption resistance (12) one terminates to the drain electrode of MOSFET (11); The other end is received the hot end of DC/DC translation circuit input; The source electrode of MOSFET (11) is received the cold end of DC/DC translation circuit input; Voltage stabilizing didoe (7) one ends are linked the hot end of DC/DC translation circuit input, and the cold end of DC/DC translation circuit input is linked in other end series connection two divider resistances (8), (9), and the grid of MOSFET (11) seals in a protective resistance (10) and receives between divider resistance (8), (9).Limit the voltage in the circuit through voltage stabilizing didoe (7), when having overvoltage in the circuit, voltage stabilizing didoe is breakdown, and divider resistance (9) voltage rises, and causes MOSFET (11) gate-source voltage to surpass cut-in voltage, MOSFET (11) the conducting unnecessary electric energy of releasing.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202482477U CN202197094U (en) | 2011-07-07 | 2011-07-07 | Power transmission line intelligent fault monitoring coupling power supply protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202482477U CN202197094U (en) | 2011-07-07 | 2011-07-07 | Power transmission line intelligent fault monitoring coupling power supply protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202197094U true CN202197094U (en) | 2012-04-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202482477U CN202197094U (en) | 2011-07-07 | 2011-07-07 | Power transmission line intelligent fault monitoring coupling power supply protective device |
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| Country | Link |
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| CN (1) | CN202197094U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103929053A (en) * | 2013-01-15 | 2014-07-16 | 安捷伦科技有限公司 | Energy dissipating device for DC power supplies |
| CN104301426A (en) * | 2014-10-27 | 2015-01-21 | 国家电网公司 | Wireless communication system of electric transmission line on-line monitoring system |
| CN106953371A (en) * | 2017-04-24 | 2017-07-14 | 许继集团有限公司 | A kind of alternating current CT energy taking devices and anti-overvoltage circuit |
| CN107394749A (en) * | 2017-08-23 | 2017-11-24 | 惠州拓邦电气技术有限公司 | A kind of protection circuit |
| CN107482578A (en) * | 2017-09-26 | 2017-12-15 | 湖州积微电子科技有限公司 | Low-power consumption overvoltage is automatic to disconnect protection device and frequency converter |
| CN108574272A (en) * | 2017-03-08 | 2018-09-25 | 中惠创智无线供电技术有限公司 | A kind of protection circuit and wireless power supply system applied to wireless power supply system |
-
2011
- 2011-07-07 CN CN2011202482477U patent/CN202197094U/en not_active IP Right Cessation
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103929053A (en) * | 2013-01-15 | 2014-07-16 | 安捷伦科技有限公司 | Energy dissipating device for DC power supplies |
| CN103929053B (en) * | 2013-01-15 | 2018-02-13 | 是德科技股份有限公司 | Energy consumption equipment for dc source |
| CN104301426A (en) * | 2014-10-27 | 2015-01-21 | 国家电网公司 | Wireless communication system of electric transmission line on-line monitoring system |
| CN104301426B (en) * | 2014-10-27 | 2018-03-30 | 国家电网公司 | A kind of wireless communication system of transmission line of electricity online monitoring system |
| CN108574272A (en) * | 2017-03-08 | 2018-09-25 | 中惠创智无线供电技术有限公司 | A kind of protection circuit and wireless power supply system applied to wireless power supply system |
| CN106953371A (en) * | 2017-04-24 | 2017-07-14 | 许继集团有限公司 | A kind of alternating current CT energy taking devices and anti-overvoltage circuit |
| CN106953371B (en) * | 2017-04-24 | 2020-02-21 | 许继集团有限公司 | Alternating current CT energy taking device and overvoltage preventing circuit |
| CN107394749A (en) * | 2017-08-23 | 2017-11-24 | 惠州拓邦电气技术有限公司 | A kind of protection circuit |
| CN107394749B (en) * | 2017-08-23 | 2020-05-26 | 惠州拓邦电气技术有限公司 | Protective circuit |
| CN107482578A (en) * | 2017-09-26 | 2017-12-15 | 湖州积微电子科技有限公司 | Low-power consumption overvoltage is automatic to disconnect protection device and frequency converter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120418 Termination date: 20120707 |