WO2018145395A1 - 灭弧装置以及供电系统 - Google Patents

灭弧装置以及供电系统 Download PDF

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Publication number
WO2018145395A1
WO2018145395A1 PCT/CN2017/090630 CN2017090630W WO2018145395A1 WO 2018145395 A1 WO2018145395 A1 WO 2018145395A1 CN 2017090630 W CN2017090630 W CN 2017090630W WO 2018145395 A1 WO2018145395 A1 WO 2018145395A1
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Prior art keywords
arc extinguishing
arc
relay
output end
chip
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PCT/CN2017/090630
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English (en)
French (fr)
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马健
马骥
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中领世能（天津）科技有限公司
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Publication of WO2018145395A1 publication Critical patent/WO2018145395A1/zh

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage

Definitions

  • the present invention relates to the field of safe power supply technologies, and in particular, to an arc extinguishing device and a power supply system.
  • the essence of an electric arc is a gas discharge phenomenon, which is an instantaneous spark generated by an electric current passing through an insulating medium such as air.
  • the arc is also a kind of self-contained gas conduction (electrical conduction in ionized gas), and most of its carriers are electrons generated by one electron emission.
  • Electron emission occurs due to primary electron emission (thermionic emission, field emission or photoemission) on the surface of the metal wire, and gas atoms or molecules in the gap between the live line and the neutral line are generated by ionization (collision ionization, photoionization and thermal ionization). Electrons and ions.
  • electron or ion bombardment of the emitting surface in turn causes secondary electron emission.
  • the ion concentration in the gap is sufficiently large, the gap is electrically broken down to cause arcing.
  • the arc will discharge high voltage to the surrounding objects, and in severe cases, a fire will occur, so the arc is the main cause of the fire now.
  • the existing arc protection technology usually only protects specific locations in the transmission line (such as transformers, power transmission towers, transformer boxes, etc.), and the protection method also uses isolation covers, isolation barriers and other devices, and the protection effect is very limited.
  • the position of the arc caused by short circuit, line aging, breakage, etc. is difficult to predict, so it is difficult to effectively protect the arc generated in the transmission line from the prior art.
  • an object of the present invention is to provide an arc extinguishing device and a power supply system capable of effectively eliminating an arc generated in a power transmission line and improving the safety of the power transmission line.
  • an embodiment of the present invention provides an arc extinguishing device, including a coupling circuit and an arc extinguishing chip, wherein the arc extinguishing chip is provided with an arc extinguishing material;
  • the coupling circuit is configured to be connected to the first AC output end, and the input end of the arc extinguishing chip is configured to be connected to the second AC output end;
  • An arc generated between the first alternating current output terminal and the second alternating current output terminal is coupled to the arc extinguishing chip via the coupling circuit, and the arc is absorbed by the arc extinguishing material.
  • an embodiment of the present invention provides a first possible implementation of the first aspect, wherein the arc extinguishing material comprises a niobium titanium alloy.
  • an embodiment of the present invention provides a second possible implementation of the first aspect, wherein the arc extinguishing material further includes silver.
  • an embodiment of the present invention provides a third possible implementation of the first aspect, wherein the niobium titanium alloy is layered with silver in the arc extinguishing material.
  • an embodiment of the present invention provides a fourth possible implementation of the first aspect, wherein the bismuth titanium alloy is plated with silver in the arc extinguishing material.
  • an embodiment of the present invention provides a fifth possible implementation of the first aspect, wherein the coupling circuit includes a coupling resistor and a coupling capacitor in parallel.
  • an embodiment of the present invention provides a sixth possible implementation manner of the first aspect, wherein the arc extinguishing device further includes a variable resistor configured to be connected to the arc extinguishing chip Between the input terminal and the second AC output terminal.
  • an embodiment of the present invention provides a seventh possible implementation manner of the first aspect, wherein the variable resistor has a resistance ranging from 2 k ⁇ to 5.1 k ⁇ .
  • an embodiment of the present invention provides an eighth possible implementation manner of the first aspect, wherein the arc extinguishing chip further includes an arc detecting unit and a counting unit;
  • the arc detecting unit detects a current of an arc generated between the first alternating current output end and the second alternating current output end;
  • the counting unit records the number of arcs generated between the first alternating current output and the second alternating current output.
  • the embodiment of the present invention provides a ninth possible implementation manner of the first aspect, wherein the arc extinguishing chip further includes a trigger unit, and an output end of the arc extinguishing chip is configured to connect a relay;
  • the trigger unit generates a power-off signal according to the quantity recorded by the counting unit, and outputs the power-off signal to the relay by the output end of the arc-extinguishing chip.
  • an embodiment of the present invention provides a tenth possible implementation manner of the first aspect, wherein
  • the arc extinguishing chip further includes a trigger unit, and an output end of the arc extinguishing chip is configured to connect the relay;
  • the triggering unit generates a power-off signal according to the current detected by the arc detecting unit and the quantity recorded by the counting unit, and outputs the power-off signal to the relay by the output end of the arc extinguishing chip.
  • an embodiment of the present invention further provides a power supply system including a transformer and the arc extinguishing device described above;
  • the primary coil of the transformer is connected to the power grid, and two ends of the secondary coil of the transformer are respectively connected to the first alternating current output end and the second alternating current output end.
  • the embodiment of the present invention provides a first possible implementation manner of the second aspect, wherein the power supply system further includes a first relay and a second relay;
  • a control coil of the first relay is connected to an output end of the arc extinguishing chip in the arc extinguishing device, an output end of the first relay is connected in series with a control coil of the second relay, and an output end of the second relay In series with the primary coil.
  • an embodiment of the present invention provides a second possible implementation manner of the second aspect, wherein the first relay is a normally closed relay, and the second relay is a normally open relay.
  • an embodiment of the present invention provides a third possible implementation manner of the second aspect, wherein the power supply system further includes an overload protection relay connected in series with the control coil of the second relay, and an overvoltage protection Relay or short circuit protected relay.
  • the coupling circuit is configured to be connected to the first AC output end, and the input end of the arc extinguishing chip is configured to be connected to the second AC output end, that is, coupled
  • the circuit and the arc extinguishing chip are respectively connected to the two output lines of the power supply line.
  • the arc generated between the first alternating current output and the second alternating current output can be coupled by the coupling circuit, and the current signal of the arc is transmitted to the arc extinguishing chip, and the arc extinguishing material in the arc extinguishing chip absorbs the arc.
  • the arc can be absorbed at the initial stage of forming an arc between the two output lines, so that the current and voltage of the arc can be effectively reduced, or the arc can be completely prevented, thereby improving the transmission.
  • the safety of the line Since the response time of the arc extinguishing material is very short, the arc can be absorbed at the initial stage of forming an arc between the two output lines, so that the current and voltage of the arc can be effectively reduced, or the arc can be completely prevented, thereby improving the transmission. The safety of the line.
  • FIG. 1 is a schematic diagram of an arc extinguishing device according to Embodiment 1 of the present invention.
  • FIG. 2 is a schematic diagram of an arc extinguishing device according to Embodiment 2 of the present invention.
  • FIG. 3 is a schematic diagram of a preferred embodiment of an arc extinguishing device according to Embodiment 2 of the present invention.
  • FIG. 4 is a schematic diagram of a power supply system according to Embodiment 3 of the present invention.
  • the arc protection technology usually only protects specific locations in the transmission line (such as transformers, power transmission towers, transformer boxes, etc.), and the protection method also uses isolation covers, isolation barriers and other devices, and the protection effect is very limited.
  • the position of the arc caused by short circuit, line aging, breakage, etc. is difficult to predict, so it is difficult to effectively protect the arc generated in the transmission line from the prior art.
  • the embodiment of the invention provides an arc extinguishing device and a power supply system, which can effectively eliminate the arc generated in the transmission line and improve the safety of the transmission line.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the embodiment of the invention provides an arc extinguishing device, which can be applied to a power supply scene such as a home, an office or a factory.
  • the arc extinguishing device includes a coupling circuit and an arc extinguishing chip, and the arc extinguishing material T is disposed in the arc extinguishing chip.
  • the coupling circuit is configured to be connected to the first AC output terminal d, and the input end of the arc extinguishing chip is configured to be connected to the second AC output terminal b.
  • the arc generated between the AC output terminal b and the AC output terminal d is coupled to the arc extinguishing chip via the coupling circuit, and the arc is absorbed by the arc extinguishing material T.
  • the coupling circuit includes a coupling resistor R0 and a coupling capacitor C0 connected in parallel.
  • the coupling resistor R0 and the coupling capacitor C0 connected in parallel with each other can couple the current of the arc to the input end of the arc extinguishing chip when an arc occurs between the alternating current output terminal b and the alternating current output terminal d, so that the arc extinguishing chip can sense the Arc.
  • the coupling circuit is configured to be connected to the AC output terminal d
  • the input end of the arc extinguishing chip is configured to be connected to the AC output terminal b
  • the coupling circuit and the arc extinguishing chip are respectively connected to the two outputs of the power supply line line.
  • the over-coupling circuit can couple the arc generated between the alternating current output terminal d and the alternating current output terminal b, and transmit the current signal of the arc to the arc extinguishing chip, and the arc extinguishing material T in the arc extinguishing chip absorbs the arc.
  • the response time of the arc extinguishing material T is very short, the arc can be absorbed at the initial stage of forming an arc between the two output lines, so that the current and voltage of the arc can be effectively reduced, or the arc can be completely prevented, thereby improving The safety of transmission lines.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the embodiment of the present invention provides an arc extinguishing device.
  • the embodiment is basically the same as the first embodiment. The difference is that, as shown in FIG. 2, the arc extinguishing device further includes a variable resistor R1.
  • the variable resistor R1 is configured to be connected between the input end of the arc extinguishing chip and the alternating current output terminal b.
  • the resistance of the variable resistor R1 can be adjusted between 2k ⁇ and 5.1k ⁇ to provide a certain resistance value for the arc extinguishing chip, preventing the current input to the arc extinguishing chip from being excessive, and causing damage to the arc extinguishing chip.
  • the resistance of the variable resistor R1 can be adjusted at the factory according to the voltage and current conditions of the application scenario.
  • the arc extinguishing material T in the embodiment includes a niobium titanium alloy.
  • Niobium titanium alloy is a peritectic structure alloy, which has the advantages of high hardness, oxidation resistance and corrosion resistance, and niobium titanium alloy has excellent arc extinguishing performance. It has been verified by experiments that niobium-titanium alloy has excellent ability to absorb arc in the same kind of conductor material, and the arc in the ordinary current range can be completely absorbed by niobium-titanium alloy.
  • the arc extinguishing material T in the embodiment further includes silver, that is, the arc extinguishing material T is composed of a niobium titanium alloy and silver.
  • the combination of niobium titanium alloy and silver may be layered, or a layer of silver may be plated outside the niobium titanium alloy.
  • the arc extinguishing chip further includes an arc detecting unit and a counting unit.
  • the arc detecting unit is capable of detecting the current of the arc generated between the alternating current output terminal d and the alternating current output terminal b.
  • the A end of the arc detecting unit is connected to the AC output terminal b through the variable resistor R1
  • the B end of the arc detecting unit is connected to the AC output terminal b through the sensing capacitor C1.
  • the standard signal of the AC output terminal b can be obtained as the reference reference signal through the sensing capacitor C1 at the A terminal.
  • a counting unit is coupled to the arc detecting unit to record the number of arcs generated between the alternating current output d and the alternating current output b. Each time the arc detecting unit detects an arc, the counting unit records the current accumulated arc number.
  • the arc extinguishing chip further includes a trigger unit, and the output end of the arc extinguishing chip is configured to be connected to the first relay J1.
  • the trigger unit may be connected to the counting unit, generate a power-off signal according to the quantity recorded by the counting unit, and output a power-off signal to the first relay J1 from the output end of the arc-extinguishing chip, and then cut off the power supply line through the first relay J1. Realize the protection of the power supply line. For example, it may be set to generate a power-off signal when the arc is detected three times in total.
  • the trigger unit may also be connected to the counting unit and the arc detecting unit, generate a power-off signal according to the current detected by the arc detecting unit and the number recorded by the counting unit, and output a power-off signal to the first relay J1 from the output end of the arc extinguishing chip. Then, the power supply line is cut off by the first relay J1 to realize the protection of the power supply line. For example, when a continuous weak current arc occurs, a power-off signal can be generated when a cumulative three-time weak current arc is generated; when a strong current arc occurs, a strong current arc can be set to generate a power-off signal.
  • the arc extinguishing chip is further connected with a power module, and the power module outputs a DC power to the arc extinguishing chip, and is configured to supply power to the arc detecting unit, the counting unit and the trigger unit.
  • the arc generated between the alternating current output terminal d and the alternating current output terminal b can be coupled by the coupling circuit, and the current signal of the arc is transmitted to the arc extinguishing chip, and the arc extinguishing chip
  • the arc extinguishing material T absorbs the arc.
  • the response time is very short, and the arc can be absorbed at the initial stage of forming an arc between the two output lines, thereby enabling Effectively reduce the current and voltage of the arc, or can completely prevent the occurrence of the arc, thereby improving the safety of the transmission line.
  • the arc detecting unit and the counting unit in the arc extinguishing chip, the current of the arc can be detected, and the number of times the arc occurs is recorded, and then the triggering unit sends a power-off signal to the relay, and is cut off by the first relay J1.
  • the power supply line is used to protect the power supply line and further improve the safety of the power supply line.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • an embodiment of the present invention provides a power supply system including a transformer and the arc extinguishing device described above.
  • the primary coil of the transformer is connected to the power grid, and the two ends of the secondary coil of the transformer are respectively connected to the AC output terminal d and the AC output terminal b.
  • the power supply system provided by this embodiment further includes a first relay J1 and a second relay J2.
  • the control coil of the first relay J1 is connected to the output end of the arc extinguishing chip in the arc extinguishing device, the output end of the first relay J1 is connected in series with the control coil of the second relay J2 and the control power source, and the output end of the second relay J2 is connected to the transformer The primary coils are connected in series.
  • the first relay J1 is a normally closed relay, that is, the output end of the first relay J1 is in a closed state when the coil is not energized.
  • the second relay J2 is a normally open type relay, that is, the output end of the second relay J2 is in an off state when the coil is not energized.
  • the coil of the first relay J1 is not energized, and the output end of the first relay J1 is in a closed state, so the control power source can supply power to the coil of the second relay J2 through the first relay J1.
  • the coil of the second relay J2 is energized, its output terminal is in a closed state to maintain the power supply of the primary coil of the transformer.
  • the output of the arc extinguishing chip has no power-off signal output.
  • the coil of the first relay J1 When the trigger unit in the arc extinguishing chip issues a power-off signal, the coil of the first relay J1 is energized to make the first relay The output of J1 is disconnected. Since the output end of the first relay J1 is disconnected, the coil of the second relay J2 is de-energized, and the output end of the second relay J2 is disconnected, thereby disconnecting the grid from the primary coil of the transformer to cut off the power supply of the power supply system. Realize the protection of the power supply line.
  • the first relay J1 adopts a normally closed type relay
  • the second relay J2 adopts a normally open type relay
  • Multiple different relays are connected in series between the coils, such as relays configured for overload protection, relays for overvoltage protection, and relays configured for short circuit protection.
  • These relays also use a normally closed relay, and the output of each relay is connected in series with the coil of the second relay J2. When any one of the relays is disconnected, the coil of the second relay J2 can be powered off, thereby cutting off Power supply to the power system.
  • the power supply system provided by the embodiment of the invention has the same technical features as the arc extinguishing device provided by the above embodiments, so that the same technical problem can be solved and the same technical effect can be achieved.
  • the terms “installation”, “connected”, and “connected” are to be understood broadly, and may be a fixed connection or a detachable connection, unless otherwise explicitly defined and defined. , or connected integrally; may be mechanical connection or electrical connection; may be directly connected, or may be indirectly connected through an intermediate medium, and may be internal communication between the two elements.
  • installation may be a fixed connection or a detachable connection, unless otherwise explicitly defined and defined.
  • connected integrally may be mechanical connection or electrical connection; may be directly connected, or may be indirectly connected through an intermediate medium, and may be internal communication between the two elements.
  • the specific meaning of the above terms in the present invention can be understood in a specific case by those skilled in the art.
  • the coupling circuit is configured to be connected to the first AC output end, and the input end of the arc extinguishing chip is configured to be connected to the second AC output end, that is, the coupling circuit and the arc extinguishing chip are respectively connected to the power supply line.
  • the arc generated between the first alternating current output and the second alternating current output can be coupled by the coupling circuit, and the current signal of the arc is transmitted to the arc extinguishing chip, and the arc extinguishing material in the arc extinguishing chip absorbs the arc.
  • the arc can be absorbed at the initial stage of forming an arc between the two output lines, so that the current and voltage of the arc can be effectively reduced, or the arc can be completely prevented, thereby improving the transmission.
  • the safety of the line Since the response time of the arc extinguishing material is very short, the arc can be absorbed at the initial stage of forming an arc between the two output lines, so that the current and voltage of the arc can be effectively reduced, or the arc can be completely prevented, thereby improving the transmission. The safety of the line.

Abstract

一种灭弧装置以及供电系统，涉及安全供电的技术领域。该灭弧装置包括耦合电路和灭弧芯片，灭弧芯片中设置有灭弧材料（T）；耦合电路配置成连接第一交流输出端（d），灭弧芯片的输入端配置成连接第二交流输出端（b）；第一交流输出端与第二交流输出端之间产生的电弧，经耦合电路耦合至灭弧芯片，并由灭弧材料吸收电弧。该灭弧装置能够有效消除输电线路中产生的电弧，提高了输电线路的安全性。

Description

灭弧装置以及供电系统
相关申请的交叉引用
本申请要求于2017年02月08日提交中国专利局的优先权号为2017100687775、名称为“灭弧装置以及供电系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及安全供电技术领域，尤其是涉及一种灭弧装置以及供电系统。
背景技术
随着电力技术的发展，工频交流电(即市电)已经遍布每一个家庭和单位，用电的安全性也变得越来越重要。
目前的市电通常由两条输出线供电，其中一条为火线，另一条为零线。当火线与零线之间发生短路时，会产生电弧；或者由于线路老化或破损，造成火线与零线的裸露部分发生带电摩擦时，也会产生电弧。
电弧的本质是一种气体放电现象，是电流通过绝缘介质(例如空气)所产生的瞬间火花。同时，电弧也是一种自持气体导电(电离气体中的电传导)，其大多数载流子为一次电子发射所产生的电子。金属导线表面因一次电子发射(热离子发射、场致发射或光电发射)导致电子逸出，火线与零线的间隙中气体原子或分子会因电离(碰撞电离、光电离和热电离)而产生电子和离子。另外，电子或离子轰击发射表面又会引起二次电子发射，当间隙中离子浓度足够大时，间隙被电击穿而发生电弧。而电弧会对周围的物体会进行高压放电，严重时会产生火灾，因此电弧是现在造成火灾的主要原因。
现有的电弧防护技术，通常只是对输电线路中的特定位置(例如变压器、输电线塔、变电箱等)进行防护，其防护方式也是采用隔离罩、隔离栅等器件，防护效果十分有限。此外，对于短路、线路老化、破损等原因造成的电弧，其发生的位置难以预知，因此现有技术难以有效防护输电线路中产生的电弧。
发明内容
有鉴于此，本发明的目的在于提供一种灭弧装置以及供电系统，能够有效消除输电线路中产生的电弧，提高了输电线路的安全性。
第一方面，本发明实施例提供了一种灭弧装置，包括耦合电路和灭弧芯片，所述灭弧芯片中设置有灭弧材料；
所述耦合电路配置成连接第一交流输出端，所述灭弧芯片的输入端配置成连接第二交流输出端；
所述第一交流输出端与所述第二交流输出端之间产生的电弧，经所述耦合电路耦合至所述灭弧芯片，并由所述灭弧材料吸收所述电弧。
结合第一方面，本发明实施例提供了第一方面的第一种可能的实施方式，其中，所述灭弧材料中包括铑钛合金。
结合第一方面，本发明实施例提供了第一方面的第二种可能的实施方式，其中，所述灭弧材料中还包括银。
结合第一方面，本发明实施例提供了第一方面的第三种可能的实施方式，其中，所述灭弧材料中铑钛合金与银分层设置。
结合第一方面，本发明实施例提供了第一方面的第四种可能的实施方式，其中，所述灭弧材料中所述铑钛合金外电镀有银。
结合第一方面，本发明实施例提供了第一方面的第五种可能的实施方式，其中，所述耦合电路包括并联的耦合电阻和耦合电容。
结合第一方面，本发明实施例提供了第一方面的第六种可能的实施方式，其中，该灭弧装置还包括可变电阻，所述可变电阻配置成连接在所述灭弧芯片的输入端与第二交流输出端之间。
结合第一方面，本发明实施例提供了第一方面的第七种可能的实施方式，其中，所述可变电阻的阻值范围为2kΩ至5.1kΩ。
结合第一方面，本发明实施例提供了第一方面的第八种可能的实施方式，其中，所述灭弧芯片中还包括电弧检测单元和计数单元；
所述电弧检测单元检测所述第一交流输出端与所述第二交流输出端之间产生的电弧的电流；
所述计数单元记录所述第一交流输出端与所述第二交流输出端之间产生的电弧的数量。
结合第一方面，本发明实施例提供了第一方面的第九种可能的实施方式，其中，所述灭弧芯片还包括触发单元，所述灭弧芯片的输出端配置成连接继电器；
所述触发单元根据所述计数单元记录的数量，生成断电信号，并由所述灭弧芯片的输出端向继电器输出所述断电信号。
结合第一方面，本发明实施例提供了第一方面的第十种可能的实施方式，其中，所述 灭弧芯片还包括触发单元，所述灭弧芯片的输出端配置成连接继电器；
所述触发单元根据所述所述电弧检测单元检测的电流和所述计数单元记录的数量，生成断电信号，并由所述灭弧芯片的输出端向继电器输出所述断电信号。
第二方面，本发明实施例还提供一种供电系统，包括变压器以及上述的灭弧装置；
所述变压器的初级线圈连接电网，所述变压器的次级线圈的两端分别连接第一交流输出端与第二交流输出端。
结合第二方面，本发明实施例提供了第二方面的第一种可能的实施方式，其中，该供电系统还包括第一继电器和第二继电器；
所述第一继电器的控制线圈连接所述灭弧装置中的灭弧芯片的输出端，所述第一继电器的输出端与所述第二继电器的控制线圈串联，所述第二继电器的输出端与所述初级线圈串联。
结合第二方面，本发明实施例提供了第二方面的第二种可能的实施方式，其中，所述第一继电器为常闭型继电器，所述第二继电器为常开型继电器。
结合第二方面，本发明实施例提供了第二方面的第三种可能的实施方式，其中，所述供电系统还包括与所述第二继电器的控制线圈串联的过载保护的继电器、过压保护的继电器或短路保护的继电器。
本发明实施例带来了以下有益效果：本发明实施例提供的灭弧装置中，耦合电路配置成连接第一交流输出端，灭弧芯片的输入端配置成连接第二交流输出端，即耦合电路和灭弧芯片分别连接供电线路的两条输出线。通过耦合电路能够对第一交流输出端与第二交流输出端之间产生的电弧进行耦合，并将电弧的电流信号传输至灭弧芯片，灭弧芯片中的灭弧材料吸收电弧。由于灭弧材料的响应时间非常短，能够在两条输出线之间形成电弧的初期完成对电弧的吸收，因此能够有效减弱电弧的电流和电压，或者能够完全阻止电弧的发生，从而提高了输电线路的安全性。
本发明的其他特征和优点将在随后的说明书中阐述，并且，部分地从说明书中变得显而易见，或者通过实施本发明而了解。本发明的目的和其他优点在说明书、权利要求书以及附图中所特别指出的结构来实现和获得。
为使本发明的上述目的、特征和优点能更明显易懂，下文特举较佳实施例，并配合所附附图，作详细说明如下。
附图说明
为了更清楚地说明本发明具体实施方式或现有技术中的技术方案，下面将对具体实施方式或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施方式，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例一提供的灭弧装置的示意图；
图2为本发明实施例二提供的灭弧装置的示意图；
图3为本发明实施例二提供的灭弧装置的优选实施方式的示意图；
图4为本发明实施例三提供的供电系统的示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合附图对本发明的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
目前电弧防护技术，通常只是对输电线路中的特定位置(例如变压器、输电线塔、变电箱等)进行防护，其防护方式也是采用隔离罩、隔离栅等器件，防护效果十分有限。此外，对于短路、线路老化、破损等原因造成的电弧，其发生的位置难以预知，因此现有技术难以有效防护输电线路中产生的电弧。
基于此，本发明实施例提供一种灭弧装置以及供电系统，能够有效消除输电线路中产生的电弧，提高了输电线路的安全性。
实施例一：
本发明实施例提供一种灭弧装置，可应用于家庭、办公、工厂等供电场景。如图1所示，该灭弧装置包括耦合电路和灭弧芯片，并且灭弧芯片中设置有灭弧材料T。
耦合电路配置成连接第一交流输出端d，灭弧芯片的输入端配置成连接第二交流输出端b。交流输出端b与交流输出端d之间产生的电弧，经耦合电路耦合至灭弧芯片，并由灭弧材料T吸收电弧。
本实施例中，耦合电路包括并联的耦合电阻R0和耦合电容C0。相互并联的耦合电阻R0和耦合电容C0能够在交流输出端b与交流输出端d之间发生电弧时，将该电弧的电流耦合至灭弧芯片的输入端，使灭弧芯片能够感测到该电弧。
本发明实施例提供的灭弧装置中，耦合电路配置成连接交流输出端d，灭弧芯片的输入端配置成连接交流输出端b，即耦合电路和灭弧芯片分别连接供电线路的两条输出线。通 过耦合电路能够对交流输出端d与交流输出端b之间产生的电弧进行耦合，并将电弧的电流信号传输至灭弧芯片，灭弧芯片中的灭弧材料T吸收电弧。由于灭弧材料T的响应时间非常短，能够在两条输出线之间形成电弧的初期完成对电弧的吸收，因此能够有效减弱电弧的电流和电压，或者能够完全阻止电弧的发生，从而提高了输电线路的安全性。
实施例二：
本发明实施例提供一种灭弧装置，本实施例与实施例一基本相同，其不同点在于：如图2所示，在实施例一的基础上，该灭弧装置还包括可变电阻R1，可变电阻R1配置成连接在灭弧芯片的输入端与交流输出端b之间。可变电阻R1的阻值可在2kΩ至5.1kΩ之间调节，用以为灭弧芯片提供一定的阻值，防止输入灭弧芯片的电流过大，对灭弧芯片造成损坏。可变电阻R1的阻值可以在出厂时，根据应用场景的电压、电流情况进行调节设置。
作为一个优选方案，本实施例中的灭弧材料T中包括铑钛合金。铑钛合金为包晶组织合金，具有硬度高、抗氧化、耐腐蚀等优点，并且铑钛合金具有极佳的灭弧性能。经试验验证，铑钛合金在同类导体材料中具有极好的吸收电弧的能力，普通电流范围内的电弧，都可以由铑钛合金完全吸收。
进一步的是，本实施例中的灭弧材料T中还包括银，即灭弧材料T由铑钛合金和银组成。铑钛合金与银的组合方式可以是分层设置，也可以是在铑钛合金外电镀一层银。通过与银相结合，能够进一步提高铑钛合金的灭弧能力，比单独使用铑钛合金的灭弧能力更好。
如图3所示，在本发明实施例提供的另一优选方案中，灭弧芯片中还包括电弧检测单元和计数单元。
电弧检测单元能够检测交流输出端d与交流输出端b之间产生的电弧的电流。具体的，电弧检测单元的A端通过可变电阻R1连接交流输出端b，电弧检测单元的B端通过感应电容C1连接交流输出端b。A端可通过感应电容C1获得交流输出端b的标准信号，作为基准参考信号。当交流输出端d与交流输出端b之间产生的电弧时，电弧检测单元内部的比较器(图中未示出)将A端与B端接收到的信号进行比较，从而判断电弧的发生，并检测出电弧的电流。
计数单元与所述电弧检测单元连接，记录交流输出端d与交流输出端b之间产生的电弧的数量。每当电弧检测单元检测到电弧，计数单元就会记录当前累计的电弧数量。
本实施例中，灭弧芯片还进一步包括触发单元，且灭弧芯片的输出端配置成连接第一继电器J1。触发单元可以与所述计数单元连接，根据计数单元记录的数量生成断电信号，并由灭弧芯片的输出端向第一继电器J1输出断电信号，进而通过第一继电器J1切断供电线路，以实现供电线路的保护。例如，可设置为累计检测到3次电弧时生成断电信号。
所述触发单元也可以与计数单元及电弧检测单元连接，根据电弧检测单元检测的电流和计数单元记录的数量生成断电信号，并由灭弧芯片的输出端向第一继电器J1输出断电信号，进而通过第一继电器J1切断供电线路，以实现供电线路的保护。例如，当发生连续的弱电流电弧时，可设置累计3次弱电流电弧时生成断电信号；当发生强电流电弧时，可设置发生1次强电流电弧就生成断电信号。
此外，灭弧芯片还连接有电源模块，电源模块向灭弧芯片输出直流电源，配置成向电弧检测单元、计数单元和触发单元供电。
本发明实施例提供的灭弧装置中，通过耦合电路能够对交流输出端d与交流输出端b之间产生的电弧进行耦合，并将电弧的电流信号传输至灭弧芯片，灭弧芯片中的灭弧材料T吸收电弧。由于本实施例中采用铑钛合金，或铑钛合金与银的组合作为灭弧材料T，其响应时间非常短，能够在两条输出线之间形成电弧的初期完成对电弧的吸收，因此能够有效减弱电弧的电流和电压，或者能够完全阻止电弧的发生，从而提高了输电线路的安全性。
另外，本实施例中通过在灭弧芯片中设置电弧检测单元和计数单元，能够检测电弧的电流，并记录电弧发生的次数，进而由触发单元向继电器发出断电信号，通过第一继电器J1切断供电线路，以实现供电线路的保护，进一步提高供电线路的安全性。
实施例三：
如图4所示，本发明实施例提供一种供电系统，包括变压器以及上述的灭弧装置。其中，变压器的初级线圈连接电网，变压器的次级线圈的两端分别连接交流输出端d与交流输出端b。
进一步的是，本实施例提供的供电系统还包括第一继电器J1和第二继电器J2。第一继电器J1的控制线圈连接灭弧装置中的灭弧芯片的输出端，第一继电器J1的输出端与第二继电器J2的控制线圈以及控制电源串联，第二继电器J2的输出端与变压器的初级线圈串联。
作为一个优选方案，第一继电器J1为常闭型继电器，即线圈不通电时第一继电器J1的输出端处于闭合状态。同时，第二继电器J2为常开型继电器，即线圈不通电时第二继电器J2的输出端处于断开状态。
在供电系统正常供电的情况下，第一继电器J1的线圈不通电，第一继电器J1的输出端处于闭合状态，因此控制电源可通过第一继电器J1向第二继电器J2的线圈供电。第二继电器J2的线圈在通电的情况下，其输出端处于闭合状态，以维持变压器的初级线圈持续供电。同时，灭弧芯片的输出端无断电信号输出。
当灭弧芯片中的触发单元发出断电信号时，第一继电器J1的线圈通电，使第一继电器 J1的输出端断开。由于第一继电器J1的输出端断开，因此第二继电器J2的线圈断电，使第二继电器J2的输出端断开，从而切断电网与变压器的初级线圈的连接，以切断供电系统的供电，实现供电线路的保护。
本实施例中，第一继电器J1采用常闭型继电器，第二继电器J2采用常开型继电器还具有以下优点：在实际的供电系统中，可以在第一继电器J1的输出端与第二继电器J2的线圈之间串联多个不同用途的继电器，比如配置成过载保护的继电器、过压保护的继电器，以及配置成短路保护的继电器。这些继电器也都采用常闭型继电器，并且每个继电器的输出端都与第二继电器J2的线圈串联，则其中任意一个继电器断开时，都可以使第二继电器J2的线圈断电，从而切断电力系统的供电。
本发明实施例提供的供电系统，与上述实施例提供的灭弧装置具有相同的技术特征，所以也能解决相同的技术问题，达到相同的技术效果。
另外，在本发明实施例的描述中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。
在本发明的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
此外，术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性。
最后应说明的是：以上所述实施例，仅为本发明的具体实施方式，用以说明本发明的技术方案，而非对其限制，本发明的保护范围并不局限于此，尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，其依然可以对前述实施例所记载的技术方案进行修改或可轻易想到变化，或者对其中部分技术特征进行等同替换；而这些修改、变化或者替换，并不使相应技术方案的本质脱离本发明实施例技术方案的精神和范围，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应所述以权利要求的保护范围为准。
工业实用性
本实施例提供的灭弧装置中，耦合电路配置成连接第一交流输出端，灭弧芯片的输入端配置成连接第二交流输出端，即耦合电路和灭弧芯片分别连接供电线路的两条输出线。通过耦合电路能够对第一交流输出端与第二交流输出端之间产生的电弧进行耦合，并将电弧的电流信号传输至灭弧芯片，灭弧芯片中的灭弧材料吸收电弧。由于灭弧材料的响应时间非常短，能够在两条输出线之间形成电弧的初期完成对电弧的吸收，因此能够有效减弱电弧的电流和电压，或者能够完全阻止电弧的发生，从而提高了输电线路的安全性。

Claims (15)

  1. 一种灭弧装置，其特征在于，包括耦合电路和灭弧芯片，所述灭弧芯片中设置有灭弧材料；
    所述耦合电路配置成连接第一交流输出端，所述灭弧芯片的输入端配置成连接第二交流输出端；
    所述第一交流输出端与所述第二交流输出端之间产生的电弧，经所述耦合电路耦合至所述灭弧芯片，并由所述灭弧材料吸收所述电弧。
  2. 根据权利要求1所述的灭弧装置，其特征在于，所述灭弧材料中包括铑钛合金。
  3. 根据权利要求2所述的灭弧装置，其特征在于，所述灭弧材料中还包括银。
  4. 根据权利要求3所述的灭弧装置，其特征在于，所述灭弧材料中铑钛合金与银分层设置。
  5. 根据权利要求3所述的灭弧装置，其特征在于，所述灭弧材料中所述铑钛合金外电镀有银。
  6. 根据权利要求1-5任意一项所述的灭弧装置，其特征在于，所述耦合电路包括并联的耦合电阻和耦合电容。
  7. 根据权利要求1-5任意一项所述的灭弧装置，其特征在于，还包括可变电阻，所述可变电阻配置成连接在所述灭弧芯片的输入端与第二交流输出端之间。
  8. 根据权利要求7所述的灭弧装置，其特征在于，所述可变电阻的阻值范围为2kΩ至5.1kΩ。
  9. 根据权利要求1-5任意一项所述的灭弧装置，其特征在于，所述灭弧芯片中还包括电弧检测单元和计数单元；
    所述电弧检测单元检测所述第一交流输出端与所述第二交流输出端之间产生的电弧的电流；
    所述计数单元记录所述第一交流输出端与所述第二交流输出端之间产生的电弧的数量。
  10. 根据权利要求9所述的灭弧装置，其特征在于，所述灭弧芯片还包括触发单元，所述灭弧芯片的输出端配置成连接继电器；
    所述触发单元根据所述计数单元记录的数量，生成断电信号，并由所述灭弧芯片的输出端向继电器输出所述断电信号。
  11. 根据权利要求9所述的灭弧装置，其特征在于，所述灭弧芯片还包括触发 单元，所述灭弧芯片的输出端配置成连接继电器；
    所述触发单元根据所述电弧检测单元检测的电流和所述计数单元记录的数量，生成断电信号，并由所述灭弧芯片的输出端向继电器输出所述断电信号。
  12. 一种供电系统，其特征在于，包括变压器以及如权利要求1至11任一项所述的灭弧装置；
    所述变压器的初级线圈连接电网，所述变压器的次级线圈的两端分别连接第一交流输出端与第二交流输出端。
  13. 根据权利要求12所述的供电系统，其特征在于，还包括第一继电器和第二继电器；
    所述第一继电器的控制线圈连接所述灭弧装置中的灭弧芯片的输出端，所述第一继电器的输出端与所述第二继电器的控制线圈串联，所述第二继电器的输出端与所述初级线圈串联。
  14. 根据权利要求12所述的供电系统，其特征在于，所述第一继电器为常闭型继电器，所述第二继电器为常开型继电器。
  15. 根据权利要求12所述的供电系统，其特征在于，所述供电系统还包括与所述第二继电器的控制线圈串联的过载保护的继电器、过压保护的继电器或短路保护的继电器。
PCT/CN2017/090630 2017-02-08 2017-06-28 灭弧装置以及供电系统 WO2018145395A1 (zh)

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CN106655133A (zh) * 2017-02-08 2017-05-10 中领世能（天津）科技有限公司 灭弧装置以及供电系统
CN107086554A (zh) * 2017-05-26 2017-08-22 中领世能（天津）科技有限公司 供电系统及其多级保护装置

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US20080049367A1 (en) * 2006-08-24 2008-02-28 Anthony Carson Current Sensing Load Demand Apparatus and Methods
CN104246953A (zh) * 2012-04-13 2014-12-24 Abb技术有限公司 无源谐振dc电路断路器
CN106655133A (zh) * 2017-02-08 2017-05-10 中领世能（天津）科技有限公司 灭弧装置以及供电系统
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US20080049367A1 (en) * 2006-08-24 2008-02-28 Anthony Carson Current Sensing Load Demand Apparatus and Methods
CN104246953A (zh) * 2012-04-13 2014-12-24 Abb技术有限公司 无源谐振dc电路断路器
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CN206412758U (zh) * 2017-02-08 2017-08-15 中领世能（天津）科技有限公司 灭弧装置以及供电系统

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