CN210577360U - Metal armored switch equipment with maintenance uninterrupted power supply function - Google Patents

Metal armored switch equipment with maintenance uninterrupted power supply function Download PDF

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Publication number
CN210577360U
CN210577360U CN201921572367.5U CN201921572367U CN210577360U CN 210577360 U CN210577360 U CN 210577360U CN 201921572367 U CN201921572367 U CN 201921572367U CN 210577360 U CN210577360 U CN 210577360U
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China
Prior art keywords
bus
circuit breaker
current transformer
isolating switch
handcart
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CN201921572367.5U
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Chinese (zh)
Inventor
姚远
王伟
李端娇
欧阳旭东
胡金磊
苏贲
阮伟聪
唐琦
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Guangdong Power Grid Co Ltd
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Guangdong Power Grid Co Ltd
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Abstract

The utility model discloses a metal armor formula switchgear with overhaul function of not shutting down, including each other for reserve two sets of generating lines, two sets of generating line isolator, circuit breaker, be used for installing the circuit breaker handcart, circuit breaker isolator, current transformer, be used for installing current transformer's current transformer handcart and current transformer isolator. Any group of buses is selected to supply power by switching the two groups of bus isolating switches, so that power supply protection is realized. The circuit breaker is maintained or replaced without power outage through the circuit breaker isolating switch, and the current transformer is maintained or replaced without power outage through the current transformer handcart and the current transformer isolating switch.

Description

Metal armored switch equipment with maintenance uninterrupted power supply function
Technical Field
The utility model belongs to the technical field of electric power system high tension switchgear, especially, relate to a metal armor formula switchgear with overhaul uninterrupted power function.
Background
12kV metal armored middle-placed withdrawable switchgear (a middle-placed cabinet for short) is high-voltage switchgear widely used in a 10kV distribution network of a power system at present. The centrally installed switchgear provided by the prior art is mature, but along with the development of an electric power system and the continuous improvement of the requirement on the reliability of power supply, the original equipment has certain disadvantages: if the breaker has a mechanism fault and cannot complete opening, the upper-stage incoming line main breaker must be opened, so that all users need to have power cut for a short time, and the range of accident influence is enlarged.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a metal armor formula switchgear with overhaul function of not shutting down to overcome above-mentioned weak point.
To achieve the purpose, the utility model adopts the following technical proposal:
a metal armored switch device with maintenance uninterrupted power supply function comprises a bus, a bus isolating switch, a circuit breaker handcart and a circuit breaker isolating switch, wherein the circuit breaker handcart is used for installing the circuit breaker;
the bus is connected with bus isolator's one end, bus isolator's the other end connect in the last seat that touches of circuit breaker, circuit breaker isolator's both ends connect respectively in the circuit breaker last seat that touches with touch down the seat.
Optionally, the bus bar comprises a first bus bar and a second bus bar;
the bus isolating switch comprises a first bus isolating switch and a second bus isolating switch;
the first bus is connected to one end of the first bus isolating switch, and the other end of the first bus isolating switch is connected to the upper contact seat of the circuit breaker;
the second bus is connected to one end of the second bus isolating switch, and the other end of the second bus isolating switch is connected to the upper contact seat of the circuit breaker.
Optionally, the metal armored switch device with the maintenance uninterrupted power function further comprises a current transformer, a current transformer isolating switch and a current transformer handcart for mounting the current transformer;
a primary side wire inlet end of the current transformer is connected to the lower contact base of the circuit breaker, and a primary side wire outlet end of the current transformer is connected to a wire outlet power supply cable;
and two ends of the isolating switch of the current transformer are respectively connected with the lower contact seat of the circuit breaker and the outgoing line power supply cable.
Optionally, the metal-clad switchgear with a function of maintenance without power outage further comprises a connecting conductor for connecting the first bus disconnector, the second bus disconnector, the circuit breaker and the circuit breaker disconnector.
Optionally, the metal-clad switchgear with function of not overhauing power failure includes the secondary chamber that is used for installing secondary element, is used for installing the first bus-bar room of first generating line, is used for installing the second bus-bar room of second generating line, be used for installing the circuit breaker handcart room of circuit breaker handcart, be used for installing the current transformer handcart room of current transformer handcart and be used for installing the room of being qualified for the next round of competitions of supply cable.
Compared with the prior art, the embodiment of the utility model provides a following beneficial effect has:
the embodiment of the utility model provides a pair of metal armor formula switchgear with overhaul function of not shutting down, during normal power supply, generating line isolator combined floodgate, circuit breaker isolator separating brake, the electric current loops through generating line, generating line isolator, circuit breaker in order to supply power externally. When the circuit breaker needs to be overhauled or changed, the circuit breaker isolator closes a floodgate, withdraws from the circuit breaker through the circuit breaker handcart, and the electric current loops through generating line, generating line isolator, circuit breaker isolator in order to supply power to the outside this moment, realizes not having the power failure and overhauls or change the circuit breaker, reduces the power failure accident, has improved and has joined in marriage net power supply reliability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the range which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.
Fig. 1 is the embodiment of the utility model provides a metal armor formula switchgear's overall structure graph with overhaul uninterrupted power function.
Fig. 2 is the embodiment of the utility model provides a have the inside structure chart of the metal armor formula switchgear of the function of not shutting down of overhauing.
Illustration of the drawings:
the system comprises a first bus chamber 11, a second bus chamber 12, a secondary chamber 13, a circuit breaker handcart chamber 14, a current transformer handcart chamber 15 and an outlet chamber 16;
the bus-bar isolation switch comprises a bus-bar 100, a first bus-bar 21, a second bus-bar 22, a bus-bar isolation switch 200, a first bus-bar isolation switch 23, a second bus-bar isolation switch 24, a breaker isolation switch 25, a breaker handcart 26, a current transformer handcart 27, a current transformer isolation switch 28, an outgoing line power supply cable 29, a connecting conductor 30, an upper contact seat 31, a lower contact seat 32 and a breaker 33.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the embodiments of the present invention are clearly and completely described with reference to the drawings in the embodiments of the present invention, and obviously, the embodiments described below are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Please refer to fig. 1 and fig. 2.
A metal armored switch device with a maintenance uninterrupted power function comprises a secondary chamber 13 for mounting secondary elements, a first bus chamber 11 for mounting a first bus 21, a second bus chamber 12 for mounting a second bus 22, a circuit breaker handcart chamber 14 for mounting a circuit breaker handcart 26, a current transformer handcart chamber 15 for mounting a current transformer handcart 27 and an outlet chamber 16 for mounting an outlet power supply cable 29.
Specifically, the secondary element includes a secondary terminal block, a meter, a protection device, and the like.
The first bus bar compartment 11 and the second bus bar compartment 12 also each comprise a post insulator.
The circuit breaker handcart 26 is used for installing the circuit breaker 33, and when the circuit breaker 33 needs to be overhauled or replaced, the circuit breaker handcart 26 can be withdrawn through the circuit breaker handcart 26, so that the circuit breaker 33 can be withdrawn for overhauling or replacing.
The current transformer handcart 27 is used for installing a current transformer (not shown in the figure), and when the current transformer needs to be overhauled or replaced, the current transformer handcart 27 can be withdrawn through the current transformer handcart 27, so that the current transformer can be withdrawn for overhauling or replacing.
The outgoing line power supply cable 29 is used to supply power to the outside.
Specifically, the first bus bar 21 is connected to a first bus bar disconnector 23, and the second bus bar 22 is connected to a second bus bar disconnector 24.
Therefore, when any bus 100 fails or needs to be repaired, power is maintained by switching the corresponding bus disconnecting switch 200. For example, when the first bus bar 21 is powered, the first bus bar isolation switch 23 is switched on, the electric energy of the first bus bar 21 is transmitted to the breaker 33, and at this time, the second bus bar isolation switch 24 is switched off. When switching is required, the first bus bar disconnecting switch 23 is opened, and the second bus bar disconnecting switch 24 is closed, so that the electric energy of the second bus bar 22 is transmitted to the breaker 33.
Therefore, the first bus bar 21 and the second bus bar 22 are spare to each other.
Further, the circuit breaker 33 includes an upper contact seat 31 and a lower contact seat 32, the closing operation of the circuit breaker 33 makes the upper contact seat 31 and the lower contact seat 32 closed, and the opening operation of the circuit breaker 33 makes the upper contact seat 31 and the lower contact seat 32 open.
When the circuit breaker 33 needs to be overhauled, if the circuit breaker handcart 26 is withdrawn, the power supply circuit is disconnected at the moment, and no voltage exists on the outgoing line power supply cable 29.
Therefore, in order to enable the maintenance or replacement of the breaker 33 without power interruption, the upper contact base 31 and the lower contact base 32 of the breaker 33 are connected to both ends of the breaker disconnecting switch 25, respectively.
When in normal operation, power is output via the circuit breaker 33, and the circuit breaker disconnector 25 is in the open state. When the breaker 33 needs to be overhauled or replaced, the breaker isolating switch 25 is firstly closed, then the breaker handcart 26 is withdrawn, and the electric energy is output through the breaker isolating switch 25.
Furthermore, a primary side wire inlet end of the current transformer is connected to the lower contact base 32 of the breaker 33, and a primary side wire outlet end of the current transformer is connected to the outgoing power supply cable 29.
In order to facilitate the maintenance or replacement of the current transformer, in this embodiment, the current transformer is installed in a current transformer handcart 27.
A current transformer isolation switch 28 is mounted on the primary side of the current transformer. Specifically, the two ends of the current transformer disconnector 28 are connected to the lower contact base 32 of the circuit breaker 33 and the outgoing line power supply cable 29, respectively.
Therefore, when operating normally, electric power flows through the primary side of the current transformer and is output to the power-supply-line cable 29. When the current transformer needs to be overhauled or replaced, the current transformer isolating switch 28 is switched on and exits from the current transformer handcart 27, and electric energy is output to the outgoing line power supply cable 29 through the current transformer isolating switch 28.
Further, in this embodiment, when the components are connected, a busbar connection may be adopted. Specifically, this metal armor formula switchgear with maintenance does not shut down function still includes connecting conductor 30, connecting conductor 30 is used for connecting first bus isolator 23, second bus isolator 24 circuit breaker 33 with circuit breaker isolator 25.
The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are intended to be inclusive and therefore specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order discussed and illustrated, unless explicitly indicated as an order of performance. It should also be understood that additional or alternative steps may be employed.
When an element or layer is referred to as being "on" … … "," engaged with "… …", "connected to" or "coupled to" another element or layer, it can be directly on, engaged with, connected to or coupled to the other element or layer, or intervening elements or layers may also be present. In contrast, when an element or layer is referred to as being "directly on … …," "directly engaged with … …," "directly connected to" or "directly coupled to" another element or layer, there may be no intervening elements or layers present. Other words used to describe the relationship of elements should be interpreted in a similar manner (e.g., "between … …" and "directly between … …", "adjacent" and "directly adjacent", etc.). As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region or section from another element, component, region or section. Unless clearly indicated by the context, use of terms such as the terms "first," "second," and other numerical values herein does not imply a sequence or order. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
Spatially relative terms, such as "inner," "outer," "below," "… …," "lower," "above," "upper," and the like, may be used herein for ease of description to describe a relationship between one element or feature and one or more other elements or features as illustrated in the figures. Spatially relative terms may be intended to encompass different orientations of the device in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the example term "below … …" can encompass both an orientation of facing upward and downward. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (5)

1. A metal armored switch device with maintenance uninterrupted power supply function is characterized by comprising a bus, a bus isolating switch, a circuit breaker handcart and a circuit breaker isolating switch, wherein the circuit breaker handcart and the circuit breaker isolating switch are used for installing the circuit breaker;
the bus is connected with bus isolator's one end, bus isolator's the other end connect in the last seat that touches of circuit breaker, circuit breaker isolator's both ends connect respectively in the circuit breaker last seat that touches with touch down the seat.
2. The metal-clad switchgear with uninterruptible power for service of claim 1, wherein the bus bar comprises a first bus bar and a second bus bar;
the bus isolating switch comprises a first bus isolating switch and a second bus isolating switch;
the first bus is connected to one end of the first bus isolating switch, and the other end of the first bus isolating switch is connected to the upper contact seat of the circuit breaker;
the second bus is connected to one end of the second bus isolating switch, and the other end of the second bus isolating switch is connected to the upper contact seat of the circuit breaker.
3. The metal armored switch device with the function of uninterrupted power supply for overhaul according to claim 2, further comprising a current transformer, a current transformer isolating switch and a current transformer handcart for mounting the current transformer;
a primary side wire inlet end of the current transformer is connected to the lower contact base of the circuit breaker, and a primary side wire outlet end of the current transformer is connected to a wire outlet power supply cable;
and two ends of the isolating switch of the current transformer are respectively connected with the lower contact seat of the circuit breaker and the outgoing line power supply cable.
4. The metal-clad switchgear with uninterruptible power supply for service according to claim 2, further comprising a connecting conductor for connecting the first bus bar disconnector, the second bus bar disconnector, the circuit breaker and the circuit breaker disconnector.
5. The metal armored switch equipment with the overhauling uninterrupted power function according to claim 3, which comprises a secondary chamber for mounting secondary elements, a first bus chamber for mounting the first bus, a second bus chamber for mounting the second bus, a circuit breaker handcart chamber for mounting the circuit breaker handcart, a current transformer handcart chamber for mounting the current transformer handcart and an outgoing line chamber for mounting the outgoing line power supply cable.
CN201921572367.5U 2019-09-20 2019-09-20 Metal armored switch equipment with maintenance uninterrupted power supply function Active CN210577360U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921572367.5U CN210577360U (en) 2019-09-20 2019-09-20 Metal armored switch equipment with maintenance uninterrupted power supply function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921572367.5U CN210577360U (en) 2019-09-20 2019-09-20 Metal armored switch equipment with maintenance uninterrupted power supply function

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110445049A (en) * 2019-09-20 2019-11-12 广东电网有限责任公司 It is a kind of not have a power failure the metal armoured switchgear of function with maintenance

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110445049A (en) * 2019-09-20 2019-11-12 广东电网有限责任公司 It is a kind of not have a power failure the metal armoured switchgear of function with maintenance

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