CN103795054A - Lightning protection system and method of direct-current remote supply power equipment - Google Patents

Lightning protection system and method of direct-current remote supply power equipment Download PDF

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Publication number
CN103795054A
CN103795054A CN201310380021.6A CN201310380021A CN103795054A CN 103795054 A CN103795054 A CN 103795054A CN 201310380021 A CN201310380021 A CN 201310380021A CN 103795054 A CN103795054 A CN 103795054A
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CN
China
Prior art keywords
lightning protection
lightning
protection
mode inductance
piezo
Prior art date
Application number
CN201310380021.6A
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Chinese (zh)
Inventor
卫卓明
Original Assignee
深圳市金霆科技有限公司
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Application filed by 深圳市金霆科技有限公司 filed Critical 深圳市金霆科技有限公司
Priority to CN201310380021.6A priority Critical patent/CN103795054A/en
Publication of CN103795054A publication Critical patent/CN103795054A/en

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Abstract

The invention discloses a lightning protection system and method of direct-current remote supply power equipment. The system comprises a C-level lightning protection device, a lightning protection decoupling module, and a D-level lightning protection clamping module. The C-level lightning protection device is electrically connected with an output terminal of a power supply; the C-level lightning protection device is electrically connected with the D-level lightning protection clamping module by the lightning protection decoupling module; and a lightning protection piezoresistor is arranged inside the C-level lightning protection device. According to the invention, the C-level lightning protection device uses the built-in lightning protection piezoresistor to discharge parts of lightning currents and the rest of lightning currents are prevented outside the power supply by a common-mode inductor and a differential-mode inductor of the lightning protection decoupling module, so that the residual voltage inside the power supply is minimized. And the lightning current residual voltage in the power supply is clamped at about 900V by the piezoresistor and a gas discharge tube of the D-level lightning protection clamping module, so that the model selection of components inside the power supply becomes convenient substantially.

Description

The lightning-protection system of direct-current remote feeding power equipment and method thereof
Technical field
The present invention relates to the communications field, relate in particular to a kind of lightning-protection system and method thereof of direct-current remote feeding power equipment.
Background technology
Communication in China cause has had development at full speed in recent years, communication power supply is the infrastructure of whole communication network, it is the assurance of whole communication telecommunications network normal reliable operation, along with the universal of 3G network and development, the power supply of its mobile base station, EPON and the construction of indoor and outdoor machine room, connect electric problem and complete by direct-current remote feeding power equipment.Because the remote power cable of these equipment is to be directly exposed in Lightning Electromagnetic Fields rugged environment, the thunder and lightning that easily induces one causes the damage of equipment, and therefore the lightning protection in direct current supply is a rigid index subjet that must possess.Far supplying in industry standard is the C level lightning protection that meets the 8/20us20KA of system needs to the requirement of lightning protection; and the lightning protection device that at present normally can bear 20KA in output port increase to the protection of lightning protection is in the industry realized; the shortcoming of this lightning-protection method is: residual voltage can be higher, limited the components selection of power supply inside; not only greatly increase equipment cost; and lightning protection is not in place; cause the damage to device interior electronic devices and components, shortened the useful life of this equipment.
Summary of the invention
For the weak point existing in above-mentioned technology, the invention provides that a kind of simple in structure, reasonable in design, power supply components selection is convenient, cost is low and lightning-protection system and the method thereof of the direct-current remote feeding power equipment of working stability.
For achieving the above object, the lightning protection that the invention provides a kind of direct-current remote feeding power equipment is blunderbuss, comprises C level lightning protection device for part lightning current is released, for stoping remaining lightning current to enter the lightning protection uncoupling module of power supply inside and for by the D level lightning protection clamper module of clamper lightning current residual voltage; Described C level lightning protection device is electrically connected with the output of power supply, and described C level lightning protection device is electrically connected with D level lightning protection clamper module by lightning protection uncoupling module; The built-in lightning protection piezo-resistance of described C level lightning protection device.
Wherein, described lightning protection uncoupling module comprises common mode inductance, the first differential mode inductance, the second differential mode inductance and five electric capacity; One end of described common mode inductance the first winding and the second winding is connected with C level lightning protection device respectively, the other end of described common mode inductance the first winding is connected to and is connect protection ground wire by the first electric capacity, and the other end of described common mode inductance the second winding is connected to and is connect protection ground wire by the second electric capacity; One end of described the first differential mode inductance and the second differential mode inductance is connected with common mode inductance by the 3rd electric capacity respectively; the other end of described the first differential mode inductance is connected to and is connect protection ground wire by the 4th electric capacity, and the other end of described the second differential mode inductance is connected to and is connect protection ground wire by the 5th electric capacity.
Wherein, described D level lightning protection clamper module comprises the first piezo-resistance, the second piezo-resistance, the 3rd piezo-resistance and gas discharge tube; Described the first piezo-resistance is connected with the other end of the first differential mode inductance; ground connection after described the 3rd piezo-resistance is in parallel with the second piezo-resistance; the input of described gas discharge tube with connect protection ground wire be connected, the output of described gas discharge tube is connected with the first piezo-resistance and the 3rd piezo-resistance respectively.
For achieving the above object, the present invention also provides a kind of lightening arresting method of direct-current remote feeding power equipment, comprises the following steps:
Steps A: in the time that lightning waveform overvoltage appears in the output of direct-current remote feeding power equipment, part lightning current is released by the lightning protection piezo-resistance of C level lightning protection device inside, and remainder is about to flow into the lightning current of power supply inside;
Step B: common mode inductance, the first differential mode inductance and the second differential mode inductance in lightning protection uncoupling module stops remaining lightning current in upper steps A to flow to power supply outside;
The first piezo-resistance, the second piezo-resistance, the 3rd piezo-resistance and the gas discharge tube of step C:D level lightning protection clamper module be the voltage to 900V left and right by the lightning current residual voltage clamper of power supply inside.
The invention has the beneficial effects as follows: compared with prior art, the lightning-protection system of direct-current remote feeding power equipment provided by the invention and method thereof, C level lightning protection device is released part lightning current by its inner lightning protection piezo-resistance, remainder lightning current stops in power supply outside by the common mode inductance in lightning protection uncoupling module and differential mode inductance, can effectively prevent that lightning current from flowing into power supply inside, easily cause the phenomenon that power supply internal components damages to occur; And the lightning current residual voltage of power supply inside by the piezo-resistance in D level lightning protection clamper module and gas discharge tube clamper the voltage to 900V left and right, greatly facilitate the type selecting of the components and parts of power supply inside.The present invention can well realize the lightning protection of C level by Combination application and the parameter matching of above-mentioned three thunder resisting equipments, effectively reach the normal data of C level lightning protection 8/20us, 20KA, the residual voltage of power supply inside is reduced to minimum level by this system, not only greatly reduce the voltage stress of internal component, and to and internal components type selecting and cost control brought very large advantage.That the present invention has is simple in structure, reasonable in design, power supply components selection convenient, cost is low and the feature such as working stability.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the lightning-protection system of direct-current remote feeding power equipment of the present invention;
Fig. 2 is the structure chart of concrete application examples of the present invention.
Main element symbol description is as follows:
10, C level lightning protection device 11, lightning protection uncoupling module
12, D level lightning protection clamper module 13, input terminal
14, air switch 15, lead-out terminal
Embodiment
In order more clearly to explain the present invention, below in conjunction with accompanying drawing, the present invention is further described.
Refer to Fig. 1, the lightning-protection system of direct-current remote feeding power equipment provided by the invention, comprises C level lightning protection device 10 for part lightning current is released, for stoping remaining lightning current to enter the lightning protection uncoupling module 11 of power supply inside and for by the D level lightning protection clamper module 12 of clamper lightning current residual voltage; C level lightning protection device 10 is electrically connected with the output of power supply, and C level lightning protection device 10 is electrically connected with D level lightning protection clamper module 12 by lightning protection uncoupling module 11; The built-in lightning protection piezo-resistance (not shown) of C level lightning protection device 10.Lightning protection uncoupling module 11 comprises common mode inductance L1, the first differential mode inductance L2, the second differential mode inductance L3 and the first capacitor C 1, the second capacitor C 2, the 3rd capacitor C 3, the 4th capacitor C 4 and the 5th capacitor C 5; The first winding L 1-A of common mode inductance and one end of the second winding L 1-B are connected with C level lightning protection device 10 by the 6th capacitor C 6 respectively, the first winding L 1-A of common mode inductance the other end be connected to and meet protection ground wire PE by the first capacitor C 1, the other end of the second winding L 1-B of common mode inductance is connected to and is met protection ground wire PE by the second capacitor C 2; One end of the first differential mode inductance L2 and the second differential mode inductance L3 is connected with common mode inductance L 1 by the 3rd capacitor C 3 respectively; the other end of the first differential mode inductance L2 is connected to and is met protection ground wire PE by the 4th capacitor C 4, and the other end of the second differential mode inductance L3 is connected to and is met protection ground wire PE by the 5th capacitor C 5.In said structure, common mode inductance L1, the first differential mode inductance L2 and the second differential mode inductance L3 have the effect of well logical low frequency resistance high frequency, can effectively lightning current be stoped to the outside at direct-current remote feeding power equipment.Meanwhile, six electric capacity can effectively be eliminated the jamming incoherent signal between these components and parts, filter and obtain pure direct current through electric capacity, effectively improve the operating efficiency of this system.
In the present embodiment, D level lightning protection clamper module 12 comprises the first piezo-resistance RV1, the second piezo-resistance RV2, the 3rd piezo-resistance RV3 and gas discharge tube G1; The first piezo-resistance RV1 is connected with the other end of the first differential mode inductance L2; ground connection GND after the 3rd piezo-resistance RV3 is in parallel with the second piezo-resistance RV2; the input of gas discharge tube G1 with meet protection ground wire PE and be connected, the output of gas discharge tube G1 is connected with the first piezo-resistance RV1 and the 3rd piezo-resistance RV1 respectively.The first differential mode inductance L2 is connected with D level lightning protection clamper module 12 with the second resistance R 2 by the first resistance R 1 of series connection with the second differential mode inductance L3.
The lightening arresting method of direct-current remote feeding power equipment provided by the invention, comprises the following steps:
The first step: in the time that lightning waveform overvoltage appears in the output of direct-current remote feeding power equipment, part lightning current is released by the lightning protection piezo-resistance of C level lightning protection device 10 inside, and remainder is about to flow into the lightning current of power supply inside; If remaining lightning current flow in power supply, easily cause the damage of power supply internal components.
Second step: common mode inductance L1, the first differential mode inductance L2 in lightning protection uncoupling module 11 and the second differential mode inductance L3 stop remaining lightning current in the first step to flow to power supply outside.
The 3rd step: the first piezo-resistance RV1, the second piezo-resistance RV2, the 3rd piezo-resistance RV3 and the gas discharge tube G1 of D level lightning protection clamper module 12 be the voltage to 900V left and right by the lightning current residual voltage clamper of power supply inside.Specification in D level lightning protection clamper module 12 is 8/20us, 5KA.
Please further consulting Fig. 2, is the concrete application examples of this lightning-protection system in direct-current remote feeding power equipment, and the input terminal 13 in this equipment connects two-way input line and enters into mainboard; Be connected to air switch 14 with cable again, then cable is connected to EMI plate; Finally be connected to C level lightning protection device 10 from EMI plate, and export lead-out terminal 15 to, be the output of this power supply, wherein lead-out terminal 15Wei tri-tunnel outputs.Connect at input terminal 13 structure that two-way input line enters into mainboard, by D level lightning protection clamper module 12, it is carried out to lightning protection, the voltage by the lightning current residual voltage clamper between components and parts to 900V left and right; Be connected with EMI plate at air switch 14 in the structure of work, by lightning protection uncoupling module 11, it carried out to lightning protection, effectively stop lightning current to enter in air switch 14 or EMI plate; C level lightning protection device 10 exports lead-out terminal 15 to, between C level lightning protection device 10 and lead-out terminal 15, by the lightning protection piezo-resistance in the C level lightning protection device 10 of multiple 350Vac grades, is released in part thunder and lightning road.Use this lightning-protection system in this power-supply device, can carry out three grades of lightning protections to this equipment, the lightning current residual voltage of this device interior is reduced to minimum level, greatly reduce the voltage stress of internal component.
The present invention is not limited in the direct-current remote feeding power equipment of the above-mentioned type, can also be widely used in other direct-current remote feeding power equipment, makes to be directly exposed to remote power cable in Lightning Electromagnetic Fields rugged environment and can not cause the damage of equipment.
Operation principle of the present invention and parameter matching are described: in the time that the lightning waveform of 8/20us, 20KA is added on power output end, be 380V+_VO1, between 380V_GND1 and PE time, the C level lightning protection device 10 of 350Vac grade can be released thunderbolt energy by inner lightning protection piezo-resistance, but still some energy flow into power supply the inside, easily cause power supply internal components to damage; After increasing lightning protection uncoupling module 11, because there is the existence of the first differential mode inductance L2, the second differential mode inductance L2 and common mode inductance L1, unnecessary thunderbolt energy is just blocked in outside by inductance, and the D level lightning protection clamper module that power supply inside is made up of pressure-sensitive and gas discharge tube can be good at the electric pressure to 900V left and right by residual voltage clamper, this parts selection to power supply inside is very helpful.
The lightning-protection system of direct-current remote feeding power equipment provided by the invention and method thereof, there is following advantage: C level lightning protection device 10 is released part lightning current by its inner lightning protection piezo-resistance, remainder lightning current stops in power supply outside by the common mode inductance in lightning protection uncoupling module 11 and differential mode inductance, can effectively prevent that lightning current from flowing into power supply inside, easily cause the phenomenon that power supply internal components damages to occur; And the lightning current residual voltage of power supply inside by the piezo-resistance in D level lightning protection clamper module 12 and gas discharge tube clamper the voltage to 900V left and right, greatly facilitate the type selecting of the components and parts of power supply inside.The present invention can well realize the lightning protection of C level by Combination application and the parameter matching of above-mentioned three thunder resisting equipments, effectively reach the normal data of C level lightning protection 8/20us, 20KA, the residual voltage of power supply inside is reduced to minimum level by this system, not only greatly reduce the voltage stress of internal component, and to and internal components type selecting and cost control brought very large advantage.That the present invention has is simple in structure, reasonable in design, power supply components selection convenient, cost is low and the feature such as working stability.
Disclosed is above only several specific embodiment of the present invention, but the present invention is not limited thereto, and the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.

Claims (4)

1. the lightning-protection system of a direct-current remote feeding power equipment, it is characterized in that, comprise C level lightning protection device for part lightning current is released, for stoping remaining lightning current to enter the lightning protection uncoupling module of power supply inside and for by the D level lightning protection clamper module of clamper lightning current residual voltage; Described C level lightning protection device is electrically connected with the output of power supply, and described C level lightning protection device is electrically connected with D level lightning protection clamper module by lightning protection uncoupling module; The built-in lightning protection piezo-resistance of described C level lightning protection device.
2. the lightning-protection system of direct-current remote feeding power equipment according to claim 1, is characterized in that, described lightning protection uncoupling module comprises common mode inductance, the first differential mode inductance, the second differential mode inductance and five electric capacity; One end of described common mode inductance the first winding and the second winding is connected with C level lightning protection device respectively, the other end of described common mode inductance the first winding is connected to and is connect protection ground wire by the first electric capacity, and the other end of described common mode inductance the second winding is connected to and is connect protection ground wire by the second electric capacity; One end of described the first differential mode inductance and the second differential mode inductance is connected with common mode inductance by the 3rd electric capacity respectively; the other end of described the first differential mode inductance is connected to and is connect protection ground wire by the 4th electric capacity, and the other end of described the second differential mode inductance is connected to and is connect protection ground wire by the 5th electric capacity.
3. the lightning-protection system of direct-current remote feeding power equipment according to claim 1, is characterized in that, described D level lightning protection clamper module comprises the first piezo-resistance, the second piezo-resistance, the 3rd piezo-resistance and gas discharge tube; Described the first piezo-resistance is connected with the other end of the first differential mode inductance; ground connection after described the 3rd piezo-resistance is in parallel with the second piezo-resistance; the input of described gas discharge tube with connect protection ground wire be connected, the output of described gas discharge tube is connected with the first piezo-resistance and the 3rd piezo-resistance respectively.
4. a lightening arresting method for direct-current remote feeding power equipment, is characterized in that, comprises the following steps:
Steps A: in the time that lightning waveform overvoltage appears in the output of direct-current remote feeding power equipment, part lightning current is released by the lightning protection piezo-resistance of C level lightning protection device inside, and remainder is about to flow into the lightning current of power supply inside;
Step B: common mode inductance, the first differential mode inductance and the second differential mode inductance in lightning protection uncoupling module stops remaining lightning current in upper steps A to flow to power supply outside;
The first piezo-resistance, the second piezo-resistance, the 3rd piezo-resistance and the gas discharge tube of step C:D level lightning protection clamper module be the voltage to 900V left and right by the lightning current residual voltage clamper of power supply inside.
CN201310380021.6A 2013-08-20 2013-08-20 Lightning protection system and method of direct-current remote supply power equipment CN103795054A (en)

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Application Number Priority Date Filing Date Title
CN201310380021.6A CN103795054A (en) 2013-08-20 2013-08-20 Lightning protection system and method of direct-current remote supply power equipment

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104218561A (en) * 2014-09-30 2014-12-17 成都思迈科技发展有限责任公司 Multistage lightning protection circuit with delay circuit
CN104319753A (en) * 2014-09-19 2015-01-28 中山市鸿程科研技术服务有限公司 Lightning protection circuit of low-voltage power supply
CN105140900A (en) * 2015-09-09 2015-12-09 成都川睿科技有限公司 Lightning protection power socket of intelligent traffic system
CN105656015A (en) * 2016-03-25 2016-06-08 煤炭科学技术研究院有限公司 Mining monitoring substation surge protection circuit
CN106911307A (en) * 2017-02-22 2017-06-30 新华三技术有限公司 Ethernet transmits eoc signal frequency mixer
WO2017181806A1 (en) * 2016-04-18 2017-10-26 中兴通讯股份有限公司 Switching-mode power supply lightning protection apparatus and switching-mode power supply

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011078247A (en) * 2009-09-30 2011-04-14 Mikimoto:Kk Surge protection device
CN202873141U (en) * 2012-10-17 2013-04-10 广州南科集成电子有限公司 Switch dimming circuit of wide-voltage high-power factor LED lamp
CN203056571U (en) * 2012-12-27 2013-07-10 徐大鹏 Low residual voltage lightning protection device for power supply
CN203086135U (en) * 2013-01-17 2013-07-24 深圳市赛盛技术有限公司 Industrial switch direct current power supply port protection circuit
CN203103947U (en) * 2012-12-28 2013-07-31 烟台东方电子衡器有限公司 Lightning protector

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011078247A (en) * 2009-09-30 2011-04-14 Mikimoto:Kk Surge protection device
CN202873141U (en) * 2012-10-17 2013-04-10 广州南科集成电子有限公司 Switch dimming circuit of wide-voltage high-power factor LED lamp
CN203056571U (en) * 2012-12-27 2013-07-10 徐大鹏 Low residual voltage lightning protection device for power supply
CN203103947U (en) * 2012-12-28 2013-07-31 烟台东方电子衡器有限公司 Lightning protector
CN203086135U (en) * 2013-01-17 2013-07-24 深圳市赛盛技术有限公司 Industrial switch direct current power supply port protection circuit

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104319753A (en) * 2014-09-19 2015-01-28 中山市鸿程科研技术服务有限公司 Lightning protection circuit of low-voltage power supply
CN104218561A (en) * 2014-09-30 2014-12-17 成都思迈科技发展有限责任公司 Multistage lightning protection circuit with delay circuit
CN105140900A (en) * 2015-09-09 2015-12-09 成都川睿科技有限公司 Lightning protection power socket of intelligent traffic system
CN105656015A (en) * 2016-03-25 2016-06-08 煤炭科学技术研究院有限公司 Mining monitoring substation surge protection circuit
WO2017181806A1 (en) * 2016-04-18 2017-10-26 中兴通讯股份有限公司 Switching-mode power supply lightning protection apparatus and switching-mode power supply
CN106911307A (en) * 2017-02-22 2017-06-30 新华三技术有限公司 Ethernet transmits eoc signal frequency mixer

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