Integrated switch device

Abstract

The invention discloses an integrated switch device, and the device comprises an installation unit which comprises an installation pedestal, an energy supply assembly disposed on the installation pedestal, an optical fiber insulation assembly disposed on the energy supply assembly, and a protection cover wire outlet hole disposed in the optical fiber insulation assembly. The control unit comprises a control assembly arranged on the energy supply assembly, a current transformer arranged on the control assembly and a switching cylinder; and a switch unit. The integrated switching device is small in overall structural size and small in occupied area, the problem that the occupied area is large and is trapped when an existing power station is additionally installed and transformed is solved, when a system normally operates, the current limiting reactor is quickly switched and bypassed, the integrated switching device operates without loss at the moment, electric energy loss is not additionally increased, and the service life of the system is prolonged. According to the invention, economic benefits during normal operation of the system are ensured, and when a short-circuit fault occurs, impact and damage of overlarge short-circuit current to main primary equipment can be reduced, so that the effect of limiting the short-circuit current is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of switch devices, and in particular to an integrated switch device. Background Art

[0002] With the construction of new power systems, the short-circuit current level in the power system continues to increase, threatening the safe and stable operation of the power system and the reliable operation of various electrical equipment in the power system. In existing solutions, reactors are often connected in series in the line to increase the impedance of the line during a short circuit, thereby limiting the short-circuit current.

[0003] In the existing solutions, the series reactor has long-term current flow, which has problems such as power loss, voltage fluctuation, and electromagnetic interference. In addition, the current limiting reactors used in the existing integrated deep current limiting devices are mostly epoxy casting types. Due to the characteristics of epoxy materials, they have disadvantages such as low insulation performance, poor dynamic thermal stability, and insufficient mechanical strength. In addition, the existing split deep current limiting devices have the defect of occupying a large area, which brings inconvenience to the installation and modification of existing power stations. Summary of the invention

[0004] In view of the above problems existing in the existing integrated switch device, the present invention is proposed.

[0005] Therefore, the purpose of the present invention is to provide an integrated switch device, which aims to solve the problem that the current limiting reactors used in the existing integrated deep current limiting devices are mostly epoxy casting type, which has the disadvantages of low insulation performance, poor dynamic thermal stability, insufficient mechanical strength, etc. due to the characteristics of epoxy materials. In addition, the existing split deep current limiting device has the defect of occupying a large area, which brings inconvenience to the installation and modification of the existing power station.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: comprising:

[0007] The installation unit comprises an installation base, an energy supply assembly arranged on the installation base, an optical fiber insulation assembly arranged on the energy supply assembly, and a protective cover outlet hole arranged on the optical fiber insulation assembly;

[0008] A control unit, comprising a control component arranged on the energy supply component, a current transformer and a switching cylinder arranged on the control component; and,

[0009] The switch unit comprises a fast switch arranged on the control unit, a reactance component arranged on the fast switch, and an operating component arranged on the fast switch.

[0010] As a preferred solution of the integrated switching device described in the present invention, the energy supply component includes a sealed terminal board arranged on the mounting base, a lower flange and an upper flange of the energy supply equipment arranged on the sealed terminal board, and an insulating sleeve of the energy supply equipment arranged on the periphery of the sealed terminal board.

[0011] As a preferred solution of the integrated switch device of the present invention, the energy supply component also includes a protective cover 1 arranged at both ends of the insulating sleeve of the energy supply equipment, and a functional board arranged on the insulating sleeve of the energy supply equipment.

[0012] As a preferred solution of the integrated switch device described in the present invention, the optical fiber insulation component includes a stainless steel bellows arranged on the mounting base, an insulator 2 arranged on the energy supply component, an upper optical fiber flange 1 and a lower optical fiber flange 1 arranged at both ends of the insulator 2, and corresponding upper optical fiber flange outlet holes and lower optical fiber flange outlet holes.

[0013] As a preferred solution of the integrated switch device described in the present invention, the control component includes a channel steel arranged on the energy supply component, a fast switch trigger device arranged on the channel steel, a fast switch sleeve and a transfer block arranged on the fast switch trigger device, and a cabinet door and an observation window arranged on the fast switch trigger device.

[0014] As a preferred solution of the integrated switch device of the present invention, the current transformer includes a connecting copper bar arranged on the outside of the adapter tube, and a pointed screw arranged on the connecting copper bar.

[0015] As a preferred solution of the integrated switch device described in the present invention, the reactance component includes an insulator 1 arranged on the fast switch, a reactance lower outlet terminal arranged on the insulator 1, and a reactance upper outlet terminal arranged on the reactance lower outlet terminal.

[0016] As a preferred solution of the integrated switch device of the present invention, the reactance component further includes a rain cover arranged on the upper outlet terminal of the reactance, and an open star frame arranged on the outer side of the rain cover.

[0017] As a preferred solution of the integrated switch device of the present invention, the operating assembly includes a fast switch bushing arranged on the fast switch, a fast switch upper outlet terminal and a fast switch lower outlet terminal arranged on the fast switch bushing.

[0018] As a preferred solution of the integrated switch device described in the present invention, the operating component also includes an opening coil and a closing coil arranged under the fast switch, a repulsion disk arranged between the opening coil and the closing coil, and a vacuum arc extinguishing chamber arranged in the fast switch bushing.

[0019] Beneficial effects of the present invention: The integrated switch device of the present invention is based on the installation base, and is installed by setting the inductor component, control component, fast switch, energy supply component, optical fiber insulation component, and current transformer in conjunction with the stacked structure. The overall structure has a small volume and occupies a small area, which solves the problem of large floor space when installing and renovating the existing power station. The upper and lower outlet terminals of the fast switch are connected to the outlet terminals of the current limiting reactor through copper bars, so that the current limiting reactor is connected in parallel at both ends of the fast switch, and the trigger unit inside the control cabinet controls the action of the fast switch. When the system is operating normally, the current limiting reactor is bypassed by the fast switch. At this time, the integrated switch device operates without loss and does not increase the power loss, ensuring the economic benefits of the system during normal operation. When a short-circuit fault occurs, the current transformer detects the changing current, and the background control device quickly detects the fault and controls the fast switch to break within the first cycle of the short-circuit current, transferring the short-circuit current to the current limiting reactor, limiting the short-circuit current peak and steady-state short-circuit current, and making the short-circuit current level lower than the breaking capacity of the high-voltage circuit breaker. At the same time, it reduces the impact and damage of excessive short-circuit current on major primary equipment, thereby achieving the effect of limiting short-circuit current.

[0020] The integrated switch device of the present invention adopts a hollow structure type for the current limiting reactor, and the overall insulation heat resistance grade is required to be F grade, and the insulation heat resistance material between the turns and strands of the winding is required to be H grade. The parameters of the current limiting reactor are determined by calculating the short-circuit current of the power system to meet the dynamic and thermal stability current and duration requirements. The current limiting reactor adopts an open star frame structure, and the connecting ring is connected in two sections to increase the overall strength and can be installed in a friendly manner with the fast switch. The overall current limiting reactor shields the brittleness of the epoxy material and ensures the effectiveness of the insulation between layers and groups. At the same time, a rain cover is installed on the top of the current limiting reactor to improve the reliability during outdoor operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0022] Figure 1 It is a schematic diagram of the overall structure of the integrated switch device of the present invention.

[0023] Figure 2 It is a schematic diagram of the structure of the optical fiber insulation component of the integrated switch device of the present invention.

[0024] Figure 3 This is a schematic diagram of the structure of the energy supply component of the integrated switch device of the present invention.

[0025] Figure 4 It is a schematic diagram of the structure of the integrated switch device control component of the present invention.

[0026] Figure 5 It is a schematic diagram of the structure of the current transformer of the integrated switch device of the present invention.

[0027] Figure 6 It is a schematic diagram of the fast switching structure of the integrated switch device of the present invention.

[0028] Figure 7 It is a schematic diagram of the structure of the reactance component of the integrated switch device of the present invention. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0032] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0033] Example 1

[0034] Reference Figure 1-3, which is the first embodiment of the present invention, provides an integrated switch device, which includes an installation unit 100, including an installation base 1, an energy supply component 2 arranged on the installation base 1, an optical fiber insulation component 3 arranged on the energy supply component 2, and a protective cover outlet hole 41 arranged on the optical fiber insulation component 3. The installation base 1 provides a stable support for the entire device. The optical fiber insulation component 3 is arranged to ensure the safety of electrical isolation and signal transmission by transmitting control signals and using the energy provided by the energy supply component 2;

[0035] The control unit 200 includes a control component 4 disposed on the energy supply component 2, a current transformer 5 and a switching cylinder 9 disposed on the control component 4; and,

[0036] The switch unit 300 includes a fast switch 6 arranged on the control unit 200, a reactance component 7 arranged on the fast switch 6, and an operating component 28 arranged on the fast switch 6, and can quickly respond to the control signal to achieve rapid disconnection or closing of the circuit.

[0037] Among them, the power supply component 2 includes a sealed terminal board 15 arranged on the mounting base 1, a lower flange 12 and an upper flange 14 of the power supply equipment arranged on the sealed terminal board 15, and an insulating sleeve 11 of the power supply equipment arranged on the periphery of the sealed terminal board 15. The power supply component 2 safely obtains electrical energy from the power supply through the sealed terminal board 15 and the insulating sleeve, and transmits it to the control unit 200, so that the optical fiber insulation component 3 can transmit the control signal through the optical fiber, thereby ensuring high-speed transmission of the signal and electrical isolation.

[0038] During use, the staff turns on the switch component to start the entire device. The control component 4 controls the opening and closing actions of the fast switch 6 according to the data of the current transformer 5 and other input signals to achieve automatic and rapid disconnection or closing of the circuit. When a short-circuit current is detected, the reactance component 7 and the operating component 28 work together to quickly disconnect the circuit, limit the short-circuit current, and protect the circuit safety, which not only improves the stability and safety of the power system, but also simplifies the maintenance and operation processes and reduces the long-term operation costs.

[0039] Example 2

[0040] Reference Figure 1-5, which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: the energy supply component 2 also includes a protective cover 10 arranged at both ends of the insulating sleeve 11 of the energy supply equipment, and a functional board 13 arranged on the insulating sleeve 11 of the energy supply equipment. The protective cover 10 provides additional physical protection for the energy supply component 2 and reduces the risk of failure due to environmental factors. By introducing the functional board 13, it is convenient for staff to access more control and monitoring functions, thereby further improving the intelligence level of the device, thereby enhancing the reliability and maintenance convenience of the entire integrated switch device.

[0041] Compared with Example 1, further, the optical fiber insulation assembly 3 includes a stainless steel bellows 8 arranged on the mounting base 1, an insulator 222 arranged on the energy supply assembly 2, an upper optical fiber flange 381 and a lower optical fiber flange 36 arranged at both ends of the insulator 222, and corresponding upper optical fiber flange 38 outlet holes and lower optical fiber flange outlet holes 40. The provision of the stainless steel bellows 8 simplifies the wiring process of the optical fiber cable and reduces the workload of installation and maintenance. The design of the upper optical fiber flange 381 and the lower optical fiber flange 36 helps to reduce the risk of signal interruption caused by connection problems. The design of the upper optical fiber flange 38 outlet holes and the lower optical fiber flange outlet holes 40 facilitates the inspection and replacement of the optical fiber cable by the staff, thereby improving the efficiency of maintenance and overhaul.

[0042] Compared with Example 1, further, the control component 4 includes a channel steel 16 arranged on the energy supply component 2, a quick switch 6 trigger device arranged on the channel steel 16, a quick switch 6 sleeve and a transfer block 21 arranged on the quick switch 6 trigger device, and a cabinet door 18 and an observation window 19 arranged on the quick switch 6 trigger device. The channel steel 16 can enhance the physical stability of the control component 4 and reduce the risk of damage to the device, while the quick switch 6 trigger device can improve the response speed of the quick switch 6, ensuring that the device can quickly cut off or close the circuit under short circuit or other abnormal conditions. The design of the cabinet door 18 and the observation window 19 helps the staff to observe the inside of the device without opening the cabinet door 18, thereby improving the detection and maintenance efficiency.

[0043] Compared with Example 1, further, the current transformer 5 includes a connecting copper bar 42 arranged on the outside of the adapter tube 9, and a pointed screw 43 arranged on the connecting copper bar 42, which improves the physical stability and electrical connection stability of the device.

[0044] The remaining structures are the same as those of Example 1.

[0045] Example 3

[0046] Reference Figure 1-7, which is the third embodiment of the present invention. This embodiment is different from the second embodiment in that the reactance component 7 includes an insulator 22- arranged on the fast switch 6, a reactance lower outlet terminal 25 arranged on the insulator 22-, and a reactance upper outlet terminal 26 arranged on the reactance lower outlet terminal 25. The insulator 22- improves the electrical isolation of the reactance component 7, reduces the risk of current leakage, and improves the safety of the entire switch device. The design of the reactance lower outlet terminal 25 and the reactance upper outlet terminal 26 ensures a stable connection with the fast switch 6 and other electrical systems, and effectively reduces the contact resistance and heating problems of the connection point.

[0047] Compared with Example 2, the reactance component 7 further includes a rain cover 27 arranged on the upper output terminal 26 of the reactance, and an open star frame 24 arranged on the outside of the rain cover 27, which effectively improves the supporting force of the device in harsh environments.

[0048] Compared with Example 2, further, the operating component 28 includes a fast switch 6 sleeve arranged on the fast switch 6, an upper outlet terminal of the fast switch 6 arranged on the sleeve of the fast switch 6, and a lower outlet terminal of the fast switch 6, which helps to improve the operating efficiency of the fast switch 6 and is also convenient for staff to assist in manual operation.

[0049] Compared with Example 2, further, the operating component 28 also includes an opening coil 34 and a closing coil 33 arranged under the fast switch 6, a repulsion disk 32 arranged between the opening coil 34 and the closing coil 33, and a vacuum arc extinguishing chamber 35 arranged in the casing of the fast switch 6. The opening coil 34 and the closing coil 33 enable the fast switch 6 to respond to the control signal more quickly and realize rapid opening and closing operations, thereby improving the response speed and reliability of the power system. The repulsion disk 32 can reduce the mechanical wear during the operation of the fast switch 6 and extend the service life of the switch. At the same time, the use of the vacuum arc extinguishing chamber 35 effectively reduces the arc generated when the circuit is cut off, prevents the arc from damaging the surrounding equipment, and also reduces the electromagnetic interference when the circuit is cut off, reducing the maintenance requirements of the staff.

[0050] The remaining structure is the same as that of Example 2.

[0051] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, improvements, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0052] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An integrated switch device, characterized in that: include, The installation unit (100) comprises an installation base (1), an energy supply assembly (2) arranged on the installation base (1), an optical fiber insulation assembly (3) arranged on the energy supply assembly (2), and a protective cover outlet hole (41) arranged on the optical fiber insulation assembly (3); A control unit (200) comprises a control component (4) arranged on the energy supply component (2), a current transformer (5) and a switching cylinder (9) arranged on the control component (4); and The switch unit (300) comprises a fast switch (6) arranged on the control unit (200), a reactance component (7) arranged on the fast switch (6), and an operating component (28) arranged on the fast switch (6).

2. The integrated switch device according to claim 1, characterized in that: The energy supply assembly (2) comprises a sealed terminal plate (15) arranged on the mounting base (1), a lower flange (12) and an upper flange (14) of an energy supply device arranged on the sealed terminal plate (15), and an insulating sleeve (11) of the energy supply device arranged on the periphery of the sealed terminal plate (15).

3. The integrated switch device according to claim 2, characterized in that: The energy supply assembly (2) further comprises a protective cover (10) arranged at both ends of the insulating sleeve (11) of the energy supply device, and a functional board (13) arranged on the insulating sleeve (11) of the energy supply device.

4. The integrated switch device according to claim 3, characterized in that: The optical fiber insulation assembly (3) comprises a stainless steel bellows (8) arranged on the mounting base (1), an insulator (22) arranged on the energy supply assembly (2), an upper optical fiber flange (38) and a lower optical fiber flange (36) arranged at both ends of the insulator (22), and corresponding upper optical fiber flange (38) outlet holes and lower optical fiber flange outlet holes (40).

5. The integrated switch device according to claim 4, characterized in that: The control component (4) comprises a channel steel (16) arranged on the energy supply component (2), a quick switch (6) trigger device arranged on the channel steel (16), a quick switch (6) sleeve and a transfer block (21) arranged on the quick switch (6) trigger device, and a cabinet door (18) and an observation window (19) arranged on the quick switch (6) trigger device.

6. The integrated switch device according to claim 5, characterized in that: The current transformer (5) comprises a connecting copper bar (42) arranged outside the adapter tube (9), and a pointed screw (43) arranged on the connecting copper bar (42).

7. The integrated switch device according to claim 6, characterized in that: The reactance component (7) comprises an insulator (22) disposed on the fast switch (6), a reactance lower outlet terminal (25) disposed on the insulator (22), and a reactance upper outlet terminal (26) disposed on the reactance lower outlet terminal (25).

8. The integrated switch device according to claim 7, characterized in that: The reactance assembly (7) further comprises a rain cover (27) arranged on the upper outlet terminal (26) of the reactance, and an open star frame (24) arranged outside the rain cover (27).

9. The integrated switch device according to claim 8, characterized in that: The operating assembly (28) comprises a fast switch (6) sleeve arranged on the fast switch (6), an upper outlet terminal of the fast switch (6) arranged on the sleeve of the fast switch (6), and a lower outlet terminal of the fast switch (6).

10. The integrated switch device according to claim 9, characterized in that: The operating assembly (28) further comprises an opening coil (34) and a closing coil (33) arranged under the fast switch (6), a repulsion disk (32) arranged between the opening coil (34) and the closing coil (33), and a vacuum interrupter (35) arranged in the bushing of the fast switch (6).

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