CN114726084A - Double-insurance mechanism uninterrupted power transformation device and method for circuit breaker - Google Patents

Double-insurance mechanism uninterrupted power transformation device and method for circuit breaker Download PDF

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Publication number
CN114726084A
CN114726084A CN202210526916.5A CN202210526916A CN114726084A CN 114726084 A CN114726084 A CN 114726084A CN 202210526916 A CN202210526916 A CN 202210526916A CN 114726084 A CN114726084 A CN 114726084A
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China
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circuit breaker
unit
power supply
electrically connected
input unit
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CN202210526916.5A
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CN114726084B (en
Inventor
姚龙华
孟玮
殷天然
陈昊
杨晓帆
王煜
戴秀嵩
王礼未
吴悦华
刘赛
戎子睿
李颖洁
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Super High Voltage Co of State Grid Jiangsu Electric Power Co Ltd
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Super High Voltage Co of State Grid Jiangsu Electric Power Co Ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
    • 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
    • H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
    • H02H7/268—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured for DC systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems

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  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Stand-By Power Supply Arrangements (AREA)
  • Breakers (AREA)

Abstract

本发明公开了断路器检修技术领域的一种双保险机制的不停电改造断路器的装置及方法，装置包括主供电电源输入单元、备用供电电源输入单元、空开单元和输出单元；所述主供电电源输入单元、备用供电电源输入单元分别与空开单元的输入端电连接；所述空开单元的输出端与所述输出单元电连接；所述输出单元与负载电连接，用于代替待改造断路器向负载供电；所述主供电电源输入单元与第一直流系统电连接，所述备用供电电源输入单元与第二直流系统电连接，所述第一直流系统与所述第二直流系统相互独立。本发明能够在不停电的情况下更换断路器，并能保证供电的稳定性和可靠性，减少了人力、物力的投入，减少了经济损失。

Figure 202210526916

The invention discloses a device and method for uninterrupted retrofit of a circuit breaker with double insurance mechanism in the technical field of circuit breaker maintenance. The device comprises a main power supply input unit, a backup power supply input unit, an air switch unit and an output unit; The power supply input unit and the backup power supply input unit are respectively electrically connected to the input end of the air switch unit; the output end of the air switch unit is electrically connected to the output unit; the output unit is electrically connected to the load for replacing the waiting unit The retrofit circuit breaker supplies power to the load; the main power supply input unit is electrically connected to the first DC system, the backup power supply input unit is electrically connected to the second DC system, and the first DC system is electrically connected to the second DC system The DC systems are independent of each other. The invention can replace the circuit breaker without power failure, can ensure the stability and reliability of the power supply, reduce the input of manpower and material resources, and reduce the economic loss.

Figure 202210526916

Description

Double-insurance mechanism uninterrupted power transformation device and method for circuit breaker
Technical Field
The invention belongs to the technical field of circuit breaker maintenance, and particularly relates to a device and a method for modifying a circuit breaker without power outage of a double-insurance mechanism.
Background
The miniature circuit breakers become an indispensable important component in the power grid due to the huge number, wide application range and the control and protection functions of switching on and off loads and removing faults in the power system. The current miniature circuit breaker maintenance method is that guarantee that air humidity is moderate, regularly carry out the manual work and patrol and examine and in time change according to the working life of the air switch, some problems that exist in the aspect of the operation of present miniature circuit breaker and maintenance: 1. the daily maintenance workload of the miniature circuit breaker is huge, and the basic-level maintenance personnel are seriously insufficient, so that the maintenance workload is difficult to be completed according to the quality and the quantity. 2. The miniature circuit breaker working life is too long or the operation is too frequent, so that mechanical aging is caused, the safety action cannot be guaranteed, and certain hidden danger exists in the safe operation of the system. 3. At present, the miniature circuit breaker with the problem of replacement needs to be subjected to power failure operation, so that important loads are often forced to stop working, and great economic loss is brought. The traditional miniature circuit breaker replacement mode is that the miniature circuit breaker that ages needs to have a power failure with direct current load again changes, has not better replacement mode temporarily, because the power failure is had a power failure depending on the load, and the requirement of system safety operation can't be satisfied to this mode.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a double-insurance mechanism device and a double-insurance mechanism method for reforming a circuit breaker without power outage, which can replace the circuit breaker without power outage, ensure the stability and reliability of power supply, reduce the investment of manpower and material resources and reduce the economic loss.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the first aspect provides a device for transforming a circuit breaker without power outage, which comprises a main power supply input unit, a standby power supply input unit, an air switch unit and an output unit; the main power supply input unit and the standby power supply input unit are respectively and electrically connected with the input end of the air switch unit; the output end of the air switch unit is electrically connected with the output unit; the output unit is electrically connected with the load and used for replacing a circuit breaker to be transformed to supply power to the load; the main power supply input unit is electrically connected with a first direct current system, the standby power supply input unit is electrically connected with a second direct current system, and the first direct current system and the second direct current system are mutually independent.
Furthermore, main power supply input unit includes main circuit breaker, main circuit breaker's input is connected with first direct current system electricity, main circuit breaker's output is connected with the input electricity of air switch unit through first diode.
Further, reserve power supply input unit includes reserve circuit breaker, reserve circuit breaker's input is connected with second direct current system electricity, reserve circuit breaker's output is connected with the input electricity of idle unit through the second diode.
Further, a unidirectional DC/DC electric energy conversion module is connected in series between the second diode and the input end of the air switch unit.
Furthermore, the unidirectional DC/DC power conversion module comprises a controller, and the controller is used for switching on the standby power supply input unit to supply power to the load when the main power supply input unit loses power.
Further, a third diode is arranged between the output end of the air switch unit and the output unit.
Furthermore, the output unit comprises a terminal strip clamp, the terminal strip clamp comprises a fixing piece, a screw rod and a nut, the fixing piece is used for being clamped on the terminal strip, the screw rod is in threaded connection with the fixing piece and is electrically connected with the terminal strip, the nut is in threaded connection with the screw rod, and the nut is used for electrically connecting the output end of the air opening unit to the screw rod; the terminal block is electrically connected to a load.
Furthermore, the mounting has the spacing end with terminal block assorted, spacing end and terminal block sliding connection for after changing the circuit breaker, slide to next binding post by current binding post.
And the indicating lamp unit comprises a light emitting diode arranged at the output end of the air switch unit and is used for indicating whether the circuit is conducted or not after the wiring is finished.
In a second aspect, a method for retrofitting a circuit breaker without power outage is provided, comprising: connecting a main power supply input unit of a device for transforming the circuit breaker without power failure to a first direct current system; connecting a standby power supply input unit of a device for transforming the circuit breaker without power failure to a second direct current system; connecting an output unit of the device for transforming the circuit breaker without power outage with a terminal strip of a load input end, and supplying power to a load; closing an air switch in an air switch unit of the device for reforming the circuit breaker without power failure; disconnecting the circuit breaker to be reconstructed and replacing the circuit breaker; after the replacement, the replaced circuit breaker is closed, and then the output unit of the device for modifying the circuit breaker without power outage is disconnected from the terminal strip of the load input end.
Compared with the prior art, the invention has the following beneficial effects:
(1) the invention is electrically connected with the input end of the air switch unit through the main power supply input unit and the standby power supply input unit respectively; the output end of the air switch unit is electrically connected with the output unit; the output unit is electrically connected with the load and used for replacing a circuit breaker to be transformed to supply power to the load; the main power supply input unit is electrically connected with the first direct current system, the standby power supply input unit is electrically connected with the second direct current system, and the first direct current system and the second direct current system are mutually independent; the circuit breaker can be replaced without power outage, the stability and reliability of power supply can be guaranteed, the investment of manpower and material resources is reduced, and the economic loss is reduced;
(2) the invention adopts the double-power input design and the diode one-way isolation design, prevents the problems of power supply looped network, influence on the matching of level difference and the like, ensures that the uninterrupted power supply work can achieve very good application effect, not only can effectively solve the problem of replacing a miniature circuit breaker in the past when the load is in power failure, but also can prevent electric shock and short circuit faults;
(3) the circuit breaker replacing device has high operability and good safety, can be replaced without power failure, is suitable for replacing circuit breakers in batches on site, and can reduce a large amount of power failure time.
Drawings
Fig. 1 is a schematic diagram of a circuit breaker replacement device for modifying a circuit breaker without power outage according to an embodiment of the invention;
fig. 2 is a block diagram of an apparatus for modifying a circuit breaker without power outage for a dual-safety mechanism according to an embodiment of the present invention;
fig. 3 is a schematic view of a terminal block jig used in the embodiment of the present invention in a use state.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
The first embodiment is as follows:
as shown in fig. 1 and fig. 2, a device for modifying a circuit breaker without power outage of a double-insurance mechanism includes a main power supply input unit, a standby power supply input unit, an air switch unit and an output unit; the main power supply input unit and the standby power supply input unit are respectively and electrically connected with the input end of the air switch unit; the output end of the air switch unit is electrically connected with the output unit; the output unit is electrically connected with the load and used for replacing a circuit breaker to be transformed to supply power to the load; the main power supply input unit is electrically connected with the first direct current system, the standby power supply input unit is electrically connected with the second direct current system, and the first direct current system and the second direct current system are mutually independent.
This embodiment explains for waiting to reform transform the circuit breaker with the miniature circuit breaker who is in the lagging state, and when miniature circuit breaker was in the lagging state, the miniature circuit breaker that will fall behind changed, did not influence the normal operating of important load. Through adopting this embodiment the mode of device short circuit old miniature circuit breaker of transformation circuit breaker that does not have a power failure, guarantee not withdraw from under the prerequisite of operation at the load, reform transform old miniature circuit breaker and change.
As shown in fig. 1, the circuit breaker includes two sections of dc systems, I section of dc system (first dc system) and II section of dc system (second dc system), and the circuit breaker to be modified is a miniature circuit breaker QF1 connected to the I section of dc system. When the miniature circuit breaker QF1 is in the state of lagging, the main power supply input unit of the device for modifying circuit breakers without power outage, described in this embodiment, is connected to the terminal strip corresponding to the standby miniature circuit breaker QF2 of the feeder screen of the I-section direct current system, and the standby power supply input unit is connected to the terminal strip corresponding to the standby miniature circuit breaker QF3 of the feeder screen of the II-section direct current system. Clamping the output unit on a terminal strip at a load end through a special terminal strip clamp to replace a circuit breaker to be transformed to supply power to a load; the air switch JK in the air switch unit is switched on, and meanwhile, the standby miniature circuit breaker QF2 of the I-section direct-current system feeder screen is switched on, at the moment, the original load branch and a cross-over branch consisting of the standby miniature circuit breaker QF2 of the I-section direct-current system feeder screen and the air switch JK supply power to the load at the same time, so that the backward QF1 miniature circuit breaker can be withdrawn and replaced, and the normal work of uninterrupted power supply of the load is ensured in the process. In order to prevent the input end from tripping and failing, two input ends of a device for reforming the circuit breaker without power failure are respectively bridged on an I/II section direct current system, so that the other input end still supplies power when one input end is disconnected, and in addition, the problem that a direct current power supply looped network and a miniature circuit breaker are matched in a step difference mode possibly occurs when the two sections of direct current systems are bridged is considered, so that two counter measures are added, wherein one of the two counter measures is that diodes are adopted for isolation between input and output and between output and output, and the step difference matching of the miniature circuit breaker is prevented from being influenced; and secondly, an isolation diode is adopted between the two inputs, and a DC/DC electric energy conversion module is added, so that serious system faults caused by a looped network to a direct current system are avoided. The method specifically comprises the following steps: the output end of the miniature circuit breaker QF2 is electrically connected with the input end of the air switch unit through a first diode 1, the output end of the miniature circuit breaker QF3 is electrically connected with the input end of the air switch unit through a second diode 2, a unidirectional DC/DC electric energy conversion module 4 is connected in series between the second diode 2 and the input end of the air switch unit (namely the input end of the air switch JK), the unidirectional DC/DC electric energy conversion module 4 comprises a controller, the controller is used for switching on the standby power supply input unit to supply power to a load when the main power supply input unit loses power, and a third diode 3 is arranged between the output end of the air switch unit (namely the output end of the air switch JK) and the output unit.
As shown in fig. 2, the apparatus for modifying a circuit breaker without power outage in this embodiment includes a main power supply input unit, a standby power supply input unit, an air switch unit, an indicator light unit, and an output unit;
the main power supply input unit mainly provides a section I direct current system power supply by utilizing the one-way conductivity of a diode; the standby power supply input unit is used as a standby power supply and consists of a control panel and a unidirectional DC/DC electric energy conversion module, the unit can monitor the voltage of a main power supply in real time, when the voltage loss of the main power supply output is detected, the control panel sends an action instruction to start the unidirectional DC/DC electric energy conversion module, the electric energy of a II-section direct current system is automatically converted to output direct current, and the power is provided for a load, so that the standby power supply input unit not only has an electrical isolation function, but also has an automatic unidirectional electric energy conversion function; the air switch unit is used for temporarily replacing an old miniature circuit breaker; the indicating lamp unit is used for automatically lighting an indicating lamp when the wiring of the output end is finished, and prompting that the wiring of a loop from the output end of a worker to the load side is connected; the output unit is mainly used for power output and supplying power to a load.
As shown in fig. 3, the output unit includes a terminal strip fixture, the terminal strip fixture includes a fixing member 61 for being clamped on the terminal strip 5, a screw rod 62 in threaded connection with the fixing member 61 and electrically connected with the terminal strip 5, and a nut 63 in threaded connection with the screw rod 62, and the fixing member 61 and the screw rod 62 are used for double fixation, so as to ensure that no falling-off condition exists in the using process. The nut 63 is used for electrically connecting the output end of the air opening unit to the screw 62; the terminal block 5 is electrically connected to a load. The fixing member 61 has a limiting end 611 matched with the terminal strip, and the limiting end 611 is connected with the terminal strip 5 in a sliding manner, so that the current wiring terminal slides to the next wiring terminal after the circuit breaker is replaced.
The use method of the terminal row clamp comprises the following steps: at first, fasten mounting 61 terminal row 5, then screw rod 62 is twisted into, and reuse nut 63 fixes bypass cable 7 (bypass cable 7 connects the output of the air switch unit) to realize uninterrupted power supply and reform the operation of changing miniature circuit breaker, change after accomplishing old miniature circuit breaker, twist out screw rod 62, directly remove mounting 61 at terminal row 5, can carry out the change of next old miniature circuit breaker. Here, it can be seen that the terminal block dedicated jig in the device plays a role of bridging, connects the device to the dc branch, allows the miniature circuit breaker of the device to replace the old miniature circuit breaker for a short time during replacement, and can be permanently retained on the terminal block without affecting the ordinary maintenance or line improvement.
The circuit breaker can be replaced under the condition of no power failure, the stability and the reliability of power supply can be ensured, the investment of manpower and material resources is reduced, and the economic loss is reduced; the adoption of a dual-power input design and a diode one-way isolation design prevents the problems of power supply looped network, influence on level difference matching and the like, so that the uninterrupted power supply work can achieve a very good application effect, the problem of replacing a miniature circuit breaker in the past when the load is in power failure can be effectively solved, and electric shock and short-circuit faults can be prevented; the circuit breaker switching device has the advantages of high operability, good safety, no power failure, suitability for field batch replacement of the circuit breakers and capability of reducing a large amount of power failure time.
Example two:
the present embodiment is different from the first embodiment in that, in the present embodiment, the main power supply input unit includes a main circuit breaker (which may replace the miniature circuit breaker QF2 in the first embodiment); the standby power supply input unit comprises a standby circuit breaker (which can replace the miniature circuit breaker QF3 in the first embodiment); the method can be used for the condition that the direct current system lacks a standby miniature circuit breaker.
Example three:
based on the apparatus for modifying a circuit breaker without power outage described in the first and second embodiments, this embodiment provides a method for modifying a circuit breaker without power outage, including:
connecting a main power supply input unit of a device for transforming the circuit breaker without power failure to a first direct current system;
connecting a standby power supply input unit of a device for modifying the circuit breaker without power failure to a second direct current system;
connecting an output unit of a device for reforming the circuit breaker without power failure with a terminal strip of a load input end, and supplying power to a load;
closing an air switch in an air switch unit of the device for reforming the circuit breaker without power failure;
disconnecting the circuit breaker to be modified and replacing the circuit breaker;
after the replacement, the replaced circuit breaker is closed, and then the output unit of the device for modifying the circuit breaker without power outage is disconnected from the terminal strip of the load input end.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (10)

1.一种双保险机制的不停电改造断路器的装置，其特征在于，包括主供电电源输入单元、备用供电电源输入单元、空开单元和输出单元；1. a device for uninterrupted transformation circuit breaker of double insurance mechanism, is characterized in that, comprises main power supply input unit, backup power supply input unit, air switch unit and output unit; 所述主供电电源输入单元、备用供电电源输入单元分别与空开单元的输入端电连接；the main power supply input unit and the backup power supply input unit are respectively electrically connected with the input end of the air switch unit; 所述空开单元的输出端与所述输出单元电连接；The output end of the air switch unit is electrically connected to the output unit; 所述输出单元与负载电连接，用于代替待改造断路器向负载供电；The output unit is electrically connected to the load, and is used to supply power to the load in place of the circuit breaker to be retrofitted; 所述主供电电源输入单元与第一直流系统电连接，所述备用供电电源输入单元与第二直流系统电连接，所述第一直流系统与所述第二直流系统相互独立。The main power supply input unit is electrically connected to the first DC system, the backup power supply input unit is electrically connected to the second DC system, and the first DC system and the second DC system are independent of each other. 2.根据权利要求1所述的双保险机制的不停电改造断路器的装置，其特征在于，所述主供电电源输入单元包括主断路器，所述主断路器的输入端与第一直流系统电连接，所述主断路器的输出端通过第一二极管与空开单元的输入端电连接。2 . The device for retrofitting a circuit breaker without power failure with a double insurance mechanism according to claim 1 , wherein the main power supply input unit comprises a main circuit breaker, and the input end of the main circuit breaker is connected to the first DC circuit breaker. 3 . The system is electrically connected, and the output end of the main circuit breaker is electrically connected to the input end of the air switch unit through a first diode. 3.根据权利要求1所述的双保险机制的不停电改造断路器的装置，其特征在于，所述备用供电电源输入单元包括备用断路器，所述备用断路器的输入端与第二直流系统电连接，所述备用断路器的输出端通过第二二极管与空开单元的输入端电连接。3 . The device for retrofitting a circuit breaker without power failure with a double insurance mechanism according to claim 1 , wherein the backup power supply input unit comprises a backup circuit breaker, and the input end of the backup circuit breaker is connected to the second DC system. 4 . Electrically connected, the output end of the standby circuit breaker is electrically connected with the input end of the air switch unit through the second diode. 4.根据权利要求3所述的双保险机制的不停电改造断路器的装置，其特征在于，在所述第二二极管与空开单元的输入端之间串联有单向DC/DC电能转换模块。4 . The device for retrofitting a circuit breaker without power failure with a double insurance mechanism according to claim 3 , wherein a unidirectional DC/DC power is connected in series between the second diode and the input end of the air circuit breaker unit. 5 . conversion module. 5.根据权利要求4所述的双保险机制的不停电改造断路器的装置，其特征在于，所述单向DC/DC电能转换模块包括控制器，所述控制器用于在主供电电源输入单元失电时，接通备用供电电源输入单元为负载供电。5 . The device for retrofitting a circuit breaker without power failure with a double insurance mechanism according to claim 4 , wherein the one-way DC/DC power conversion module comprises a controller, and the controller is used for the input unit of the main power supply. 6 . When the power is lost, connect the backup power supply input unit to supply power to the load. 6.根据权利要求1所述的双保险机制的不停电改造断路器的装置，其特征在于，在空开单元的输出端与输出单元之间设置有第三二极管。6 . The device for retrofitting a circuit breaker without power failure with a double fuse mechanism according to claim 1 , wherein a third diode is provided between the output end of the air circuit breaker unit and the output unit. 7 . 7.根据权利要求1所述的双保险机制的不停电改造断路器的装置，其特征在于，所述输出单元包括端子排夹具，所述端子排夹具包括用于卡接在端子排上的固定件、与所述固定件螺纹连接并与端子排电连接的螺杆、与所述螺杆螺纹连接的螺帽，所述螺帽用于将空开单元的输出端电连接在所述螺杆上；所述端子排与负载电连接。7 . The device for retrofitting a circuit breaker without power failure with a double fuse mechanism according to claim 1 , wherein the output unit comprises a terminal block clamp, and the terminal block clamp comprises a fixing device for being clamped on the terminal block. 8 . a screw, a screw threadedly connected to the fixing piece and electrically connected to the terminal block, and a nut threadedly connected to the screw, and the nut is used to electrically connect the output end of the air switch unit to the screw; The terminal block is electrically connected to the load. 8.根据权利要求7所述的双保险机制的不停电改造断路器的装置，其特征在于，所述固定件具有与端子排相匹配的限位端，所述限位端与端子排滑动连接，用于在更换断路器结束后，由当前接线端子滑动至下一个接线端子。8 . The device for retrofitting a circuit breaker without power failure with a double fuse mechanism according to claim 7 , wherein the fixing member has a limit end matched with the terminal block, and the limit end is slidably connected to the terminal block. 9 . , used to slide from the current terminal to the next terminal after replacing the circuit breaker. 9.根据权利要求1所述的双保险机制的不停电改造断路器的装置，其特征在于，还包括指示灯单元，所述指示灯单元包括安装在空开单元的输出端的发光二极管，用于在接线完成后，指示电路是否导通。9 . The device for retrofitting a circuit breaker without power failure with a double fuse mechanism according to claim 1 , further comprising an indicator light unit, the indicator light unit comprising a light-emitting diode installed at the output end of the air-break unit for use in 9 . Indicates whether the circuit is conducting or not after wiring is completed. 10.一种双保险机制的不停电改造断路器的方法，其特征在于，包括：10. A method for retrofitting a circuit breaker without power failure with a double insurance mechanism, characterized in that it comprises: 将不停电改造断路器的装置的主供电电源输入单元连接至第一直流系统；Connect the main power supply input unit of the device for uninterrupted retrofit of the circuit breaker to the first DC system; 将不停电改造断路器的装置的备用供电电源输入单元连接至第二直流系统；Connect the backup power supply input unit of the device for retrofitting circuit breakers without interruption to the second DC system; 将不停电改造断路器的装置的输出单元与负载输入端的端子排连接，用于为负载供电；Connect the output unit of the device for retrofitting the circuit breaker without power failure to the terminal block of the load input end to supply power to the load; 闭合不停电改造断路器的装置的空开单元中的空气开关；Closing the air switch in the air circuit breaker unit of the device for the non-power-off retrofit circuit breaker; 断开待改造断路器，并进行更换；Disconnect the circuit breaker to be retrofitted and replace it; 更换后，闭合更换后的断路器，然后断开不停电改造断路器的装置的输出单元与负载输入端的端子排的连接。After replacement, close the replaced circuit breaker, and then disconnect the connection between the output unit of the device for retrofitting the circuit breaker without power failure and the terminal block at the load input end.
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