CN106571266B - Control method of vacuum circuit breaker on column and voltage type release - Google Patents

Control method of vacuum circuit breaker on column and voltage type release Download PDF

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Publication number
CN106571266B
CN106571266B CN201610979798.8A CN201610979798A CN106571266B CN 106571266 B CN106571266 B CN 106571266B CN 201610979798 A CN201610979798 A CN 201610979798A CN 106571266 B CN106571266 B CN 106571266B
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China
Prior art keywords
voltage
voltage type
type
circuit breaker
release
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CN201610979798.8A
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CN106571266A (en
Inventor
奚鹏德
马宏祥
李安顺
石川
王冲
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BEIJING JIEYUAN ELECTRIC CO LTD
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BEIJING JIEYUAN ELECTRIC CO LTD
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Priority to CN201610979798.8A priority Critical patent/CN106571266B/en
Publication of CN106571266A publication Critical patent/CN106571266A/en
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Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66Vacuum switches
    • H01H33/666Operating arrangements

Abstract

The invention discloses a vacuum circuit breaker on a column, wherein a voltage type release is arranged in a circuit breaker body, the voltage type of the voltage type release comprises a first voltage type and a second voltage type, and the vacuum circuit breaker on the column comprises: and the voltage type release is used for abutting against a switching-off mechanism of the circuit breaker operating mechanism and driving the switching-off mechanism to act when the voltage type of the voltage type release is the second voltage type. By applying the technical scheme of the invention, when the primary and secondary circuits of the power distribution system are in overvoltage, undervoltage or voltage loss states, particularly when power is lost, the circuit breaker is driven to be reliably switched off through the voltage type release, so that the safety and reliability of the circuit breaker are improved, and meanwhile, the invention also discloses a control method of the voltage type release.

Description

Control method of vacuum circuit breaker on column and voltage type release
Technical Field
The invention relates to the technical field of electricity, in particular to a vacuum circuit breaker on a column, and also relates to a control method of a voltage type release.
Background
The vacuum circuit breaker is named because the arc extinguishing medium and the insulating medium of the contact gap after arc extinguishing are both high vacuum; the vacuum circuit breaker has the advantages of small volume, light weight, suitability for frequent operation and no need of maintenance for arc extinction, and is relatively popularized in power distribution networks. At present, upgrading and replacing are mainly performed on traditional power grid equipment in rural power grid transformation, and about 2/3 investment in the whole rural power grid transformation is on low-voltage-end distribution network power transmission and transformation equipment.
In the process of implementing the invention, the inventor of the application finds that the vacuum circuit breakers in the prior art are all in live working, and if the primary and secondary circuits of a power distribution system are in overvoltage, undervoltage or voltage loss states, particularly when power is lost, the vacuum circuit breaker cannot be automatically opened.
Therefore, it is important to improve the safety and reliability of the vacuum circuit breaker.
Disclosure of Invention
The embodiment of the invention provides a pole-mounted vacuum circuit breaker and a control method of a voltage type release, wherein a device is additionally designed for the pole-mounted vacuum circuit breaker, so that the pole-mounted vacuum circuit breaker is directly opened when the voltage is not in the working range of the vacuum circuit breaker, and the problem of low safety and reliability of the vacuum circuit breaker in the prior art is solved, the pole-mounted vacuum circuit breaker comprises a circuit breaker body, a circuit breaker operating mechanism and the voltage type release arranged in the circuit breaker body, the voltage type of the voltage type release comprises a first voltage type and a second voltage type, wherein:
and the voltage type release is used for abutting against a switching-off mechanism of the circuit breaker operating mechanism and driving the switching-off mechanism to act when the voltage type of the voltage type release is the second voltage type.
In some embodiments, a spring is disposed on the voltage-type release, and is configured to enable a movable iron core of the voltage-type release to move and separate from an attraction position of the voltage-type release, and drive the opening mechanism to operate after the movable iron core abuts against the opening mechanism.
In some embodiments, the voltage-type release is further configured to separate the movable iron core from the opening mechanism and maintain the movable iron core in the pull-in position when the voltage type of the voltage-type release is the first voltage type.
In some embodiments, the voltage type release is provided with a travel switch for providing a switching-off signal.
In some embodiments, the first voltage type is a voltage within an operating voltage range of the voltage-type release, and the second voltage type is a voltage beyond the operating voltage range of the voltage-type release.
Correspondingly, an embodiment of the present invention further provides a method for controlling a voltage-type release, which is applied to the pole-mounted vacuum circuit breaker including the above-mentioned components, and the method includes:
when the voltage type of the voltage type release is a first voltage type, a movable iron core of the voltage type release is kept at a pull-in position of the voltage type release;
when the voltage type of the voltage type release is a second voltage type, the movable iron core moves and is separated from the attraction position, and the movable iron core drives the opening mechanism of the circuit breaker operating mechanism to act.
In some embodiments, the voltage type release is provided with a spring, and when the voltage type of the voltage type release is the second voltage type, the method specifically comprises:
the spring drives the movable iron core to move, and the movable iron core drives the opening mechanism to act after abutting against the opening mechanism.
In some embodiments, the invention provides a travel switch on the voltage type release, and when the voltage type of the voltage type release is a first voltage type, the method specifically includes:
the movable iron core moves to the attraction position and is kept at the attraction position, the movable iron core drives the connecting mechanism on the movable iron core to move, and the connecting mechanism enables the travel switch to act after abutting against the travel switch.
In some embodiments, the travel switch provides a switching-off signal of the circuit breaker.
In some embodiments, the first voltage type is a voltage within an operating voltage range of the voltage-type release, and the second voltage type is a voltage beyond the operating voltage range of the voltage-type release.
Compared with the prior art, the technical scheme provided by the embodiment of the invention has the beneficial technical effects that:
the circuit breaker comprises a circuit breaker body, wherein a voltage type release is arranged in the circuit breaker body, the voltage type of the voltage type release comprises a first voltage type and a second voltage type, and the circuit breaker comprises: and the voltage type release is used for abutting against a switching-off mechanism of the circuit breaker operating mechanism and driving the switching-off mechanism to act when the voltage type of the voltage type release is the second voltage type. By applying the technical scheme of the invention, when the primary and secondary circuits of the power distribution system are in overvoltage, undervoltage or voltage loss states, particularly in power loss, the voltage type release drives the breaker to be reliably switched off, so that the safety and reliability of the breaker are improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a vacuum circuit breaker on a column according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a voltage-type release according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating an operation of a vacuum circuit breaker on a column according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a first state of a vacuum circuit breaker on a column according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another state of the vacuum circuit breaker on the column according to the embodiment of the present invention.
Description of the figures
1: the circuit breaker body 31: movable iron core
2: the circuit breaker operating mechanism 32: spring
3: voltage-type trip 33: closing coil
21: push plate 34 connected to the opening half shaft system: holding coil
22: the opening semi-axis system 35 in the circuit breaker operating mechanism: board
36: travel switch
Detailed Description
In view of the problems mentioned in the background of the present application, the present invention provides a vacuum circuit breaker on a column, in which a voltage-type release connected to a tripping mechanism is disposed inside a circuit breaker body, and when an external voltage is not within a working voltage range of the voltage-type release, the voltage-type release acts and drives the tripping mechanism to act, so that the vacuum circuit breaker on the column reliably trips, thereby solving the problem of low safety and reliability of the vacuum circuit breaker in the prior art when an overvoltage, undervoltage or voltage loss state occurs in a primary loop and a secondary loop of a power distribution system, especially when the power is lost.
As shown in fig. 1, a schematic structural diagram of a pole-mounted vacuum circuit breaker according to an embodiment of the present invention mainly includes a circuit breaker body 1, a circuit breaker operating mechanism 2, and a voltage type release 3 disposed inside the circuit breaker body 1.
As described in the background of the invention, in the prior art, vacuum circuit breakers all work in a live state, and if a primary loop and a secondary loop of a power distribution system are in an overvoltage, undervoltage or voltage loss state, especially when power is lost, the vacuum circuit breaker cannot be automatically switched off, so that potential safety hazards exist, and the safety and reliability of the vacuum circuit breaker are reduced.
In view of the above problems in the prior art, the present application proposes a vacuum circuit breaker on a column. A device is additionally designed for the pole-mounted vacuum circuit breaker, so that when the voltage is not in the working range of the vacuum circuit breaker, the pole-mounted vacuum circuit breaker is directly opened, and the problem that the vacuum circuit breaker in the prior art is low in safety and reliability is solved. The vacuum circuit breaker is characterized in that a voltage-type release 3 is arranged in the circuit breaker body 1, the voltage-type release 3 is connected with a switching-off mechanism of the circuit breaker operating mechanism 2, when the external voltage cannot meet the requirement that the voltage-type release 3 works, the voltage-type release 3 acts and drives the switching-off mechanism of the circuit breaker operating mechanism 2 to act, so that the vacuum circuit breaker is reliably switched off, even if the voltage-type release 3 is uncharged, the vacuum circuit breaker can still effectively complete the switching-off operation, and the safety and reliability of the circuit breaker are improved.
In an embodiment of the present invention, the voltage types of the voltage-type trip unit 3 include a first voltage type and a second voltage type, wherein: when the voltage type of the voltage type release 3 is the second voltage type, the voltage type release 3 is abutted against the opening mechanism of the circuit breaker operating mechanism and drives the opening mechanism to act.
It should be noted that, in order to overcome the defects in the prior art, when the voltage type of the voltage type release 3 is the first voltage type, the movable iron core 31 of the voltage type release 3 is separated from the opening mechanism and is kept at the attraction position.
Specifically, the first voltage type of the voltage-type release 3 of the present invention is a voltage within an operating voltage range of the voltage-type release 3, that is, when the voltage is within the operating voltage range of the voltage-type release 3 (including during power failure); the second voltage type of the voltage-type trip unit 3 is a voltage that is beyond the operating voltage range of the voltage-type trip unit 3, that is, when the voltage is not within the operating voltage range of the voltage-type trip unit 3 (including when the power is off). Therefore, when the primary and secondary loops of the power distribution system are in overvoltage, undervoltage or voltage loss states, the voltage type tripper 3 can be used for driving the breaker to be reliably switched off.
In the preferred embodiment of the present invention, the voltage type release 3 is further provided with a spring 32, which is used for moving the movable iron core 31 of the voltage type release 3 and separating from the attraction position of the voltage type release 3, and driving the opening mechanism to operate after the movable iron core 31 butts against the opening mechanism. Specifically, when the voltage type of the voltage type release 3 is the second voltage type, firstly, the holding coil 34 of the voltage type release 3 is de-energized, so that the magnetic field and the holding force disappear, the spring 32 moves and drives the movable iron core 31 to move together, after the movable iron core is abutted to the push plate 21 connected with the opening semi-axis system 22 of the opening mechanism, the push plate 21 is continuously driven to move, at this time, the push plate 21 drives the opening semi-axis system 22 to move, and therefore the opening operation of the vacuum circuit breaker is completed.
In the preferred embodiment of the present invention, when the voltage type of the voltage type trip unit 3 is the first voltage type, the holding coil 34 is energized to generate a magnetic field and to keep the plunger 31 in the attraction state (if the voltage type trip unit 3 is initially energized, the closing coil 33 is energized to move the plunger 31, and finally the plunger 31 is kept in the attraction state by means of the holding coil 34).
In the preferred embodiment of the present invention, a travel switch 36 is further disposed on the voltage type release 3 for providing the opening signal, and specifically, the travel switch 36 may provide the undervoltage signal.
Compared with the prior art, the technical scheme provided by the embodiment of the invention has the beneficial technical effects that:
the circuit breaker comprises a circuit breaker body, wherein a voltage type release is arranged in the circuit breaker body, the voltage type of the voltage type release comprises a first voltage type and a second voltage type, and the circuit breaker comprises: and the voltage type release is used for abutting against a switching-off mechanism of the circuit breaker operating mechanism and driving the switching-off mechanism to act when the voltage type of the voltage type release is the second voltage type. By applying the technical scheme of the invention, when the primary and secondary circuits of the power distribution system are in overvoltage, undervoltage or voltage loss states, particularly in power loss, the voltage type release drives the breaker to be reliably switched off, so that the safety and reliability of the breaker are improved.
The technical solution of the present invention will be clearly and completely described below with reference to specific use scenarios in the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The technical solution of the present invention will be described with reference to a schematic structural diagram of a voltage-type release shown in fig. 2. As shown in fig. 3, a flowchart of an operation of a vacuum circuit breaker on a pole according to an embodiment of the present invention is provided, and specifically, the embodiment includes the following steps:
step 301, when the voltage type of the voltage type release is the first voltage type, the movable iron core of the voltage type release is kept at the pull-in position of the voltage type release.
In this step, it is mainly considered that when the external voltage is within the working voltage range of the voltage-type release 3, the movable iron core 31 is kept in the attraction state, and the action of the opening mechanism of the circuit breaker is not triggered, and when the external voltage cannot be within the working voltage range of the voltage-type release 3, the movable iron core 31 is separated from the attraction position and effectively opens the circuit breaker.
In a specific implementation scenario, the voltage-type release 3 is further provided with a travel switch 36, the travel switch 36 mainly provides a tripping signal of the circuit breaker, specifically, when the movable iron core 31 moves to the attraction position and is kept at the attraction position, the movable iron core 31 drives the plate 35 connected with the movable iron core 31 to move, and when the plate 35 collides with the travel switch 36, the travel switch 36 operates and keeps to be attached to the travel switch 36, as shown in fig. 4, the voltage-type release 3 is in a working state when the voltage type is the first voltage type.
And 302, when the voltage type of the voltage type release is a second voltage type, the movable iron core moves and is separated from the attraction position, and the movable iron core drives the opening mechanism of the circuit breaker operating mechanism to act.
In this step, it is mainly considered that when the external voltage is not within the working voltage range of the voltage-type release 3 (including when the voltage-type release 3 is powered off), the movable iron core 31 moves and is separated from the attraction position, and the movable iron core 31 drives the opening mechanism of the circuit breaker operating mechanism to act.
In a specific implementation scenario, the voltage-type release 3 is further provided with a spring 32, specifically, when the voltage type of the voltage-type release 3 is the second voltage type, the spring 32 drives the movable iron core 31 to move, after the movable iron core 31 abuts against the push plate 21 connected to the opening half shaft system 22 of the opening mechanism, the push plate 21 is continuously pushed to move, at this time, the push plate 21 drives the opening half shaft system 22 to move, and finally, the opening operation is completed, as shown in fig. 5, the voltage type of the voltage-type release 3 is the working state when the second voltage type is the voltage type.
Compared with the prior art, the technical scheme provided by the embodiment of the invention has the beneficial technical effects that:
the circuit breaker comprises a circuit breaker body, wherein a voltage type release is arranged in the circuit breaker body, the voltage type of the voltage type release comprises a first voltage type and a second voltage type, and the circuit breaker comprises: and the voltage type release is used for abutting against a switching-off mechanism of the circuit breaker operating mechanism and driving the switching-off mechanism to act when the voltage type of the voltage type release is the second voltage type. By applying the technical scheme of the invention, when the primary and secondary circuits of the power distribution system are in overvoltage, undervoltage or voltage loss states, particularly in power loss, the voltage type release drives the breaker to be reliably switched off, so that the safety and reliability of the breaker are improved.
It should be noted that the above specific embodiment only represents a specific implementation scenario, and does not represent that the solution of the present invention is limited thereto, and any optimization solution that can be conceived by those skilled in the art without creative efforts shall fall into the protection scope of the present embodiment.
Through the above description of the embodiments, it is clear to those skilled in the art that the embodiments of the present invention may be implemented by hardware, or by software plus a necessary general hardware platform. Based on such understanding, the technical solution of the embodiment of the present invention may be embodied in the form of a software product, where the software product may be stored in a non-volatile storage medium (which may be a CD-ROM, a usb disk, a removable hard disk, etc.), and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network-side device, etc.) to execute the method described in each embodiment of the present invention.
Those skilled in the art will appreciate that the figures are merely schematic representations of one preferred implementation scenario and that the blocks or flow diagrams in the figures are not necessarily required to implement embodiments of the present invention.
Those skilled in the art will appreciate that the modules in the devices in the implementation scenario may be distributed in the devices in the implementation scenario according to the description of the implementation scenario, or may be located in one or more devices different from the present implementation scenario with corresponding changes. The modules of the implementation scenario may be combined into one module, or may be further split into a plurality of sub-modules.
The sequence numbers of the embodiments of the present invention are only for description, and do not represent the advantages and disadvantages of the implementation scenarios.
The above disclosure is only a few specific implementation scenarios of the embodiments of the present invention, but the embodiments of the present invention are not limited thereto, and any variations that can be considered by those skilled in the art should fall within the scope of the business limitations of the embodiments of the present invention.

Claims (7)

1. The utility model provides a vacuum circuit breaker on post, includes circuit breaker body, circuit breaker operating mechanism, its characterized in that the inside voltage type release that is provided with of circuit breaker body, the voltage type of voltage type release includes first voltage type and second voltage type, wherein:
the first voltage type is a voltage within the working voltage range of the voltage-type release, the second voltage type is a voltage exceeding the working voltage range of the voltage-type release, and the second voltage type comprises overvoltage, undervoltage and voltage loss;
the voltage-type release is used for abutting against a switching-off mechanism of the circuit breaker operating mechanism and driving the switching-off mechanism to act when the voltage type of the voltage-type release is the second voltage type;
when the primary and secondary loops of the power distribution system are in an overvoltage, undervoltage or voltage loss state, the voltage type release drives the breaker to reliably open;
the voltage-type release is provided with a spring and is used for enabling a movable iron core of the voltage-type release to move and separate from the attraction position of the voltage-type release, and the movable iron core drives the opening mechanism to act after abutting against the opening mechanism;
and the voltage type release is also used for separating a movable iron core of the voltage type release from the opening mechanism and keeping the movable iron core at the attraction position when the voltage type of the voltage type release is the first voltage type.
2. The pole vacuum circuit breaker according to claim 1, wherein a travel switch is provided on the voltage type trip unit for providing a trip signal.
3. A method of controlling a voltage type trip unit for use in a pole vacuum circuit breaker comprising any one of claim 1, the method comprising:
when the voltage type of the voltage type release is a first voltage type, a movable iron core of the voltage type release is kept at a pull-in position of the voltage type release;
when the voltage type of the voltage type release is a second voltage type, the movable iron core moves and is separated from the attraction position, and the movable iron core drives the opening mechanism of the circuit breaker operating mechanism to act.
4. The control method according to claim 3, wherein a spring is disposed on the voltage type release, and when the voltage type of the voltage type release is the second voltage type, the method specifically comprises:
the spring drives the movable iron core to move, and the movable iron core drives the opening mechanism to act after abutting against the opening mechanism.
5. The control method according to claim 3, wherein a travel switch is provided on the voltage type release, and when the voltage type of the voltage type release is the first voltage type, the method specifically comprises:
the movable iron core moves to the attraction position and is kept at the attraction position, the movable iron core drives the connecting mechanism on the movable iron core to move, and the connecting mechanism enables the travel switch to act after abutting against the travel switch.
6. The control method of claim 5, wherein the travel switch provides a trip signal of the circuit breaker.
7. The control method of any of claims 3-5, wherein the first voltage type is a voltage within an operating voltage range of the voltage-type trip, and the second voltage type is a voltage outside the operating voltage range of the voltage-type trip.
CN201610979798.8A 2016-11-08 2016-11-08 Control method of vacuum circuit breaker on column and voltage type release Active CN106571266B (en)

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CN201610979798.8A CN106571266B (en) 2016-11-08 2016-11-08 Control method of vacuum circuit breaker on column and voltage type release

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Application Number Priority Date Filing Date Title
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CN106571266B true CN106571266B (en) 2020-08-04

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994008348A1 (en) * 1992-09-25 1994-04-14 Siemens Aktiengesellschaft Electromagnetically operated switching device
CN201134387Y (en) * 2007-12-20 2008-10-15 林建平 Trip mechanism for vacuum switch
CN203553028U (en) * 2013-06-07 2014-04-16 安徽鑫龙电器股份有限公司 Under-voltage and no-voltage protection device for vacuum circuit breaker

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994008348A1 (en) * 1992-09-25 1994-04-14 Siemens Aktiengesellschaft Electromagnetically operated switching device
CN201134387Y (en) * 2007-12-20 2008-10-15 林建平 Trip mechanism for vacuum switch
CN203553028U (en) * 2013-06-07 2014-04-16 安徽鑫龙电器股份有限公司 Under-voltage and no-voltage protection device for vacuum circuit breaker

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