CN110601115A - Direct current breaker valve tower - Google Patents
Direct current breaker valve tower Download PDFInfo
- Publication number
- CN110601115A CN110601115A CN201910892939.6A CN201910892939A CN110601115A CN 110601115 A CN110601115 A CN 110601115A CN 201910892939 A CN201910892939 A CN 201910892939A CN 110601115 A CN110601115 A CN 110601115A
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- Prior art keywords
- module
- branch
- mechanical switch
- lightning arrester
- fiber groove
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- 238000012546 transfer Methods 0.000 claims abstract description 151
- 239000013307 optical fiber Substances 0.000 claims description 90
- 239000010410 layer Substances 0.000 claims description 88
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 60
- 239000000835 fiber Substances 0.000 claims description 37
- 239000011229 interlayer Substances 0.000 claims description 27
- 238000009413 insulation Methods 0.000 claims description 12
- 239000003673 groundwater Substances 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 239000002356 single layer Substances 0.000 claims description 5
- 239000003990 capacitor Substances 0.000 claims description 4
- 238000005192 partition Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 14
- 239000012212 insulator Substances 0.000 description 9
- 238000002955 isolation Methods 0.000 description 8
- 230000007704 transition Effects 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- 239000002033 PVDF binder Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 101150110592 CTS1 gene Proteins 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
Classifications
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- 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
- H02G13/00—Installations of lightning conductors; Fastening thereof to supporting structure
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- 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
- H02G13/00—Installations of lightning conductors; Fastening thereof to supporting structure
- H02G13/80—Discharge by conduction or dissipation, e.g. rods, arresters, spark gaps
-
- 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
- H02G7/00—Overhead installations of electric 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
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20927—Liquid coolant without phase change
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
The invention provides a direct current breaker valve tower, comprising: the system comprises a quick mechanical switch module, a main branch module, a transfer branch module and a lightning arrester module; the main branch module is arranged between the quick mechanical switch module and the transfer branch module and is respectively connected with the quick mechanical switch module and the transfer branch module in a fitting manner; one side of the branch transferring module, which is far away from the main branch module, is attached to the lightning arrester module. Through the layout mode of the joint connection among the quick mechanical switch module, the main branch module, the transfer branch module and the lightning arrester module, the structure of the valve tower of the direct-current circuit breaker provided by the embodiment of the invention is not only clear in partition, but also more compact and small in occupied space.
Description
Technical Field
The invention relates to the technical field of circuit breakers, in particular to a valve tower of a direct-current circuit breaker.
Background
The direct current circuit breaker is a core component for breaking short-circuit current in the flexible direct current transmission system. Two big branches are connected in parallel: the first branch circuit is formed by connecting a main branch circuit and a quick mechanical switch in series, the main branch circuit is used for identifying fault current and transferring the fault current to the second branch circuit, and the quick mechanical switch is disconnected after the current is completely transferred to the second branch circuit; the second branch circuit is a transfer branch circuit and an arrester, the transfer branch circuit is used for bearing and breaking fault current of the direct current system in a short time, and the arrester is used for restraining breaking overvoltage and absorbing energy. The arrester is far away with the branch road distance when setting up in current direct current circuit breaker valve tower, leads to direct current circuit breaker valve tower's structure not compact enough, and occupation space is great, inconvenient maintenance moreover.
Disclosure of Invention
The invention aims to provide a direct-current breaker valve tower, which aims to solve the problems that the direct-current breaker valve tower is not compact enough in structure, large in occupied space and inconvenient to maintain.
An embodiment of the present invention provides a dc circuit breaker valve tower, including: the system comprises a quick mechanical switch module, a main branch module, a transfer branch module and a lightning arrester module; the main branch module is arranged between the quick mechanical switch module and the transfer branch module and is respectively connected with the quick mechanical switch module and the transfer branch module in an attaching manner; one side of the transfer branch module, which is far away from the main branch module, is attached to and connected with the lightning arrester module.
Optionally, the dc breaker valve tower provided by the embodiment of the present invention further includes: the rapid mechanical switch module, the transfer branch module and the lightning arrester module are arranged on the support bottom plate in a multi-layer mode and are equal in height; the main branch circuit module is arranged on the supporting bottom plate in a single layer mode and is lower than the rapid mechanical switch module, the transfer branch circuit module and the lightning arrester module in height.
Optionally, a fast mechanical switch optical fiber groove, a main branch optical fiber groove, a transfer branch optical fiber groove and a lightning arrester optical fiber groove are arranged above the supporting baseplate, and an earth optical fiber groove is arranged below the supporting baseplate; the rapid mechanical switch optical fiber groove, the main branch optical fiber groove, the transfer branch optical fiber groove, the lightning arrester optical fiber groove and the ground optical fiber groove are used for placing optical fibers; the ground fiber groove is respectively connected with the rapid mechanical switch fiber groove, the main branch fiber groove, the transfer branch fiber groove and the lightning arrester fiber groove through fiber groove interfaces.
Optionally, the dc breaker valve tower provided by the embodiment of the present invention further includes: a water pipe; the water pipe includes: the water supply system comprises a ground water pipe, a switching water pipe, a main water pipe and a branch water pipe; the ground water pipe is arranged below the supporting bottom plate and used for introducing external water resources; the switching water pipe is arranged on the supporting bottom plate and used for switching out water resources in the ground water pipe; the main water pipe is arranged in the main branch module and used for receiving and outputting water resources which are turned out by the contra-rotating water receiving pipe; the branch water pipe is arranged in the main branch module and used for receiving water resources output by the main water pipe, transmitting the water resources to the radiator in the main branch module and radiating heat of the IGBT in the main branch.
Optionally, the branch transferring module includes: the system comprises a plurality of transfer branch valve module layers, wherein two adjacent transfer branch valve module layers are fixedly connected through a first insulating beam; each transfer branch valve module layer comprises two transfer branch valve modules; an electrical connection structure connected with the lightning arrester module is arranged between the two transfer branch valve modules, and the two transfer branch valve modules are symmetrical about the electrical connection structure.
Optionally, a first interlayer insulation transformer and a first power supply module are arranged on each transfer branch valve module layer; the first interlayer insulating transformer is used for isolating the voltage between the module layers of each transfer branch valve; the first power supply module is used for supplying power to the transfer branch valve module layer.
Optionally, the main branch module includes: the system comprises a plurality of main branch valve modules, main branch lightning arrester sub-modules and a second power supply module, wherein adjacent main branch valve modules are fixedly connected; the main branch lightning arrester sub-module is attached to and connected with the main branch valve module; and each main branch valve module is provided with a second power supply module for supplying power to the main branch valve module.
Optionally, the fast mechanical switch module includes: the quick mechanical switch module layers are fixedly connected with each other through a fourth insulating beam; and a second interlayer insulating transformer is arranged on each quick mechanical switch module layer and used for isolating the voltage between the transfer branch valve module layers.
Optionally, each fast mechanical switch module layer includes two fast mechanical switch submodules; the fast mechanical switch submodule includes: a fast mechanical switch body; the control cabinet is used for controlling the closing state of the quick mechanical switch body; the resistance-capacitance is used for balancing the voltage of the rapid mechanical switch body; the first supporting plate is used for supporting the quick mechanical switch body, the control cabinet and the resistor-capacitor.
Optionally, the arrester module comprises: the lightning arrester module layers are fixedly connected with each other through a third insulating beam; each lightning arrester module layer comprises two lightning arrester sub-modules; two the arrester submodule piece sets up side by side, just be provided with a plurality of arrester bodies on the arrester submodule piece.
Optionally, the dc breaker valve tower provided by the embodiment of the present invention further includes: and the shielding cover is used for covering the quick mechanical switch module, the transfer branch module, the lightning arrester module and the supporting bottom plate.
Optionally, the shielding case includes: the shielding cover of the supporting bottom plate, the interlayer shielding cover and the top layer shielding cover; the supporting bottom plate shielding cover is used for coating the side wall of the steel plate; the interlayer shielding cover is used for coating the side walls of the rapid mechanical switch module, the transfer branch module and the lightning arrester module; the top layer shielding case is used for covering the tops of the quick mechanical switch module, the main branch module, the transfer branch module and the lightning arrester module.
The technical scheme of the invention has the following beneficial effects:
1. the embodiment of the invention provides a direct current breaker valve tower, which comprises: the system comprises a quick mechanical switch module, a main branch module, a transfer branch module and a lightning arrester module; the main branch module is arranged between the quick mechanical switch module and the transfer branch module and is respectively connected with the quick mechanical switch module and the transfer branch module in a fitting manner; one side of the branch transferring module, which is far away from the main branch module, is attached to the lightning arrester module. Through the layout mode of the joint connection among the quick mechanical switch module, the main branch module, the transfer branch module and the lightning arrester module, the structure of the valve tower of the direct-current circuit breaker provided by the embodiment of the invention is not only clear in partition, but also more compact and small in occupied space.
2. The direct current breaker valve tower provided by the embodiment of the invention further comprises: the supporting bottom plate, the rapid mechanical switch module, the transfer branch module and the lightning arrester module are arranged on the supporting bottom plate in a multi-layer mode and are equal in height; the main branch circuit module is arranged on the supporting bottom plate in a single layer and is lower than the quick mechanical switch module, the transfer branch circuit module and the lightning arrester module. A gap is formed between the quick mechanical switch module and the transfer branch module, namely above the main branch module, and when the quick mechanical switch module and/or the transfer branch module breaks down, the quick mechanical switch module and/or the transfer branch module can be maintained through the gap; in addition, the design of the supporting bottom plate can greatly improve the anti-seismic performance.
Drawings
Fig. 1 is a first schematic view showing a connection structure of a fast mechanical switch module, a main branch module, a transfer branch module, a lightning arrester module and a support base plate of a dc breaker valve tower according to an embodiment of the present invention;
fig. 2 is a schematic diagram showing a second connection structure of the fast mechanical switch module, the main branch module, the transfer branch module, the lightning arrester module and the support base plate of the dc breaker valve tower according to the embodiment of the present invention;
FIG. 3 is a schematic view of a connection structure of an optical fiber groove and a support base plate of a valve tower of a DC breaker according to an embodiment of the invention;
FIG. 4 is a perspective view of a connection structure of a ground fiber groove and a support base plate of a DC breaker valve tower according to an embodiment of the invention;
FIG. 5 is a schematic diagram of a connection structure of a fast mechanical switch optical fiber slot and a support base plate of a valve tower of a DC circuit breaker according to an embodiment of the invention;
fig. 6 is a schematic diagram illustrating a connection structure of a transition branch optical fiber groove and a support base plate of a dc breaker valve tower according to an embodiment of the present invention;
fig. 7 is a schematic view illustrating a connection structure of an arrester optical fiber groove and a support base plate of a dc breaker valve tower according to an embodiment of the present invention;
fig. 8 shows a schematic structural diagram of the incoming line, the energy supply line and the supporting base plate optical fiber groove 53 on the supporting base plate of the dc breaker valve tower according to the embodiment of the present invention;
fig. 9 is a schematic diagram showing a connection structure between an energy supply tower and a support floor, a fast mechanical switch module, a main branch module, a transfer branch module and a surge arrester module of a dc breaker valve tower according to an embodiment of the present invention;
fig. 10 is a schematic perspective view of a transfer branch module of a dc breaker valve tower according to an embodiment of the present invention;
fig. 11 shows a top view of a transfer branch module of a dc breaker valve tower of an embodiment of the present invention;
fig. 12 is a schematic perspective view of a main branch module of a dc breaker valve tower according to an embodiment of the present invention;
figure 13 shows a top view of a main branch module of a dc breaker valve tower of an embodiment of the present invention;
fig. 14 is a perspective view of a fast mechanical switch module of a dc breaker valve tower according to an embodiment of the present invention;
fig. 15 shows a top view of a fast mechanical switch module of a dc breaker valve tower of an embodiment of the present invention;
fig. 16 is a schematic perspective view of a surge arrester module of a dc breaker valve tower according to an embodiment of the invention;
fig. 17 shows a top view of a surge arrester module of a dc breaker valve tower of an embodiment of the invention;
fig. 18 is a schematic structural view of a valve tower support frame of a dc breaker valve tower according to an embodiment of the present invention;
figure 19 is a schematic diagram showing the use of a support floor shield of a dc breaker valve tower in conjunction with a support floor in accordance with an embodiment of the present invention;
fig. 20 is a schematic structural diagram of an interlayer shielding case of a dc breaker valve tower according to an embodiment of the present invention, and a schematic diagram of the interlayer shielding case used in cooperation with a fast mechanical switch module, a transfer branch module, and a surge arrester module;
fig. 21 shows a schematic structural view of a top shield of a dc breaker valve tower according to an embodiment of the present invention;
fig. 22 is a schematic diagram illustrating the electrical connection of the main branch module to the fast mechanical switch module in the first branch electrical configuration of the dc breaker valve tower of an embodiment of the present invention;
fig. 23 is a schematic diagram showing the electrical connections of the fast mechanical switch in the first branch electrical configuration of the dc breaker valve tower of an embodiment of the present invention;
fig. 24 is a schematic diagram illustrating electrical connections between a transition branch module and a surge arrester module in a second branch electrical configuration of a dc breaker valve tower in accordance with an embodiment of the present invention;
fig. 25 is a perspective view showing a connection structure of water pipes of a valve tower of a dc breaker according to an embodiment of the present invention;
fig. 26 is a plan view showing a connection structure of water pipes of a dc breaker valve tower according to an embodiment of the present invention;
fig. 27 is a schematic view of the connection structure of the fast mechanical switch module, the main branch module, the transfer branch module, the surge arrester module, the support chassis and the power tower of the dc breaker valve tower according to the embodiment of the present invention;
fig. 28 shows a circuit connection diagram of the fast mechanical switch module, the main branch module, the transfer branch module and the surge arrester module of the dc breaker valve tower of an embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1, an embodiment of the present invention provides a dc breaker valve tower, including: the system comprises a quick mechanical switch module 1, a main branch module 2, a transfer branch module 3 and a lightning arrester module 4; the main branch module 2 is arranged between the quick mechanical switch module 1 and the transfer branch module 3 and is respectively connected with the quick mechanical switch module 1 and the transfer branch module 3 in a bonding manner; one side of the transfer branch module 3, which is far away from the main branch module 2, is attached to the lightning arrester module 4.
Through the layout mode of the joint connection among the quick mechanical switch module 1, the main branch module 2, the transfer branch module 3 and the lightning arrester module 4, the structure of the valve tower of the direct-current circuit breaker provided by the embodiment of the invention is not only clear in partition, but also more compact and small in occupied space.
As shown in fig. 2, in an embodiment, the dc breaker valve tower provided in the embodiment of the present invention further includes: the supporting bottom plate 5, the rapid mechanical switch module 1, the transfer branch module 3 and the lightning arrester module 4 are arranged on the supporting bottom plate 5 in a multi-layer mode, and the heights of the supporting bottom plate 5 and the lightning arrester module are equal; the main branch module 2 is arranged on the supporting bottom plate 5 in a single layer and is lower than the quick mechanical switch module 1, the transfer branch module 3 and the lightning arrester module 4 in height.
Through the layout mode, a gap is formed between the quick mechanical switch module 1 and the transfer branch module 3, namely above the main branch module 2, and when the quick mechanical switch module 1 and/or the transfer branch module 3 breaks down, the quick mechanical switch module and/or the transfer branch module can be maintained through the gap; in addition, the design of the supporting bottom plate 5 can also greatly improve the earthquake-resistant performance.
In an embodiment, as shown in fig. 18, a dc breaker valve tower provided by an embodiment of the present invention further includes: the valve tower supporting frame 7 is used for supporting the supporting bottom plate 5 and is fixedly connected with the supporting bottom plate 5; the valve tower support frame 7 includes: a vertical support insulator 71 and a diagonal support insulator 72; the vertical supporting insulator 71 is composed of epoxy glass fiber rods, the diameter of the vertical supporting insulator is 220mm, the core rods are formed by single-section integral pultrusion, and the core rods are arranged in a 3 x 6 matrix; the diameter of the core rod of the diagonal bracing insulator 72 is 24mm, so that the seismic performance can be enhanced.
In an embodiment, as shown in fig. 3 to 7, an embodiment of the present invention provides a dc breaker valve tower further including: a fiber groove, the fiber groove comprising: the fast mechanical switch optical fiber groove 91, the main branch optical fiber groove 92, the transfer branch optical fiber groove 93, the lightning arrester optical fiber groove 94 and the ground optical fiber groove; the fast mechanical switch optical fiber groove 91, the main branch optical fiber groove 92, the transfer branch optical fiber groove 93 and the lightning arrester optical fiber groove 94 are arranged above the supporting bottom plate 5, and the ground optical fiber groove is arranged below the supporting bottom plate 5; the fast mechanical switch optical fiber groove 91, the main branch optical fiber groove 92, the transfer branch optical fiber groove 93, the lightning arrester optical fiber groove 94 and the ground optical fiber groove are used for placing optical fibers; the ground fiber groove is respectively connected 94 with the rapid mechanical switch fiber groove 91, the main branch fiber groove 92, the transfer branch fiber groove 93 and the lightning arrester fiber groove through fiber groove interfaces; the ground fiber groove includes: the main branch circuit ground-to-optical fiber groove 95 and the transfer branch circuit ground-to-optical fiber groove 96 are further arranged in the valve tower supporting frame 7, and the gap of the valve tower supporting frame can be effectively utilized due to the gap of the valve tower supporting frame 7, so that the structure of the direct-current breaker valve tower provided by the embodiment of the invention is more compact.
Specifically, the supporting baseplate optical fiber groove 53 is provided with a main branch to ground optical fiber groove interface, a transfer branch to ground optical fiber groove interface, a fast mechanical switch optical fiber groove interface, a main branch optical fiber groove interface, a transfer branch optical fiber groove interface and a lightning arrester optical fiber groove interface; the supporting baseplate optical fiber groove 53 is respectively connected with the main branch-to-ground optical fiber groove 92 and the transfer branch-to-ground optical fiber groove 93 through a main branch-to-ground optical fiber groove interface and a transfer branch-to-ground optical fiber groove interface; the supporting bottom plate optical fiber groove 53 is also connected with the fast mechanical switch optical fiber groove 91 through a fast mechanical switch optical fiber groove interface, so that the optical fiber information generated by the main branch to the optical fiber in the ground optical fiber groove 92 is transmitted to the fast mechanical switch module 1; the supporting bottom plate fiber groove 53 is also connected with the main branch fiber groove 92 through a main branch fiber groove interface, so that the fiber information generated by the main branch to the optical fiber in the ground fiber groove 92 is transmitted to the main branch module 2; the supporting bottom plate optical fiber groove 53 is also connected with a transfer branch optical fiber groove 92 through a transfer branch optical fiber groove interface, so that optical fiber information generated by the transfer branch to the optical fiber in the ground optical fiber groove 93 is transmitted to the transfer branch module 3; the supporting baseplate fiber groove 53 is also connected with the lightning arrester fiber groove 94 through a lightning arrester fiber groove interface, so that the lightning arrester module 4 can receive fiber information; wherein, the lightning arrester module 4 is provided with five lightning arrester sub optical fiber grooves.
Specifically, eight main branch ground fiber groove interfaces and eight transfer branch ground fiber groove interfaces are provided; the quick mechanical switch optical fiber groove interfaces are two, the main branch optical fiber groove interfaces are three, the transfer branch optical fiber groove interfaces are five, and the lightning arrester optical fiber groove interfaces are one; the present invention is by way of example only and is not limited thereto.
In one embodiment, as shown in fig. 28, there are thirteen sets of optical CTs that require fiber slot routing, with CTs 1, 2, 3 routed directly from the support backplane fiber slots 53 and CTs 4-CT13 routed directly from the surge arrester fiber slots 94.
In an example, as shown in fig. 8, an incoming line 51, an energy supply line 52, and a supporting base plate optical fiber slot 53 are provided on the supporting base plate 5, the incoming line 51 is disposed on one side of the long side of the supporting base plate 5, and is provided with a main branch module 2 incoming line interface, a transfer branch module 3, and a lightning arrester module 4 common interface, and a total current monitoring light CT is further installed on the incoming line 51 for detecting a total current value of the dc circuit breaker; a main branch current monitoring light CT is installed on the main branch busbar connected to the incoming line 51, and is used to detect the current value on the main branch. The energy supply line 52 is connected with the energy supply interfaces of the transfer branch module 3, the main branch module 2 and the quick mechanical switch module 1. One end of the supporting bottom plate optical fiber groove 53 is connected with the main branch optical fiber groove 95 and the transition branch optical fiber groove 96 to receive optical fiber signals provided by the optical fibers in the main branch optical fiber groove 95 and the transition branch optical fiber groove 96, and the other end is connected with the transition branch optical fiber groove 93, the main branch optical fiber groove 92 and the fast mechanical switch optical fiber groove 91 to transmit optical fiber signals for the transition branch module 3, the main branch module 2 and the fast mechanical switch module 1.
In an embodiment, as shown in fig. 9 and 27, a dc breaker valve tower provided in an embodiment of the present invention further includes: energy supply tower 6, energy supply tower 6 includes: an earth isolation transformer 61 connected to the power supply line 52 on the support base plate 5 to supply power to the transfer branch module 3, the main branch module 2, and the fast mechanical switch module 1; specifically, five ground isolation transformers 61 may be connected in series from bottom to top in the vertical direction; the power supply line 52 includes: the energy supply device comprises a first energy supply line, a second energy supply line and a cable, wherein the first energy supply line is connected with the second energy supply line through the cable; the second energy supply line is connected with the quick mechanical switch module 1, and the first energy supply line is connected with the transfer branch module 3 and the main branch module 2; the uppermost one of the ground isolation transformers 61 is connected to a cable, so that the ground isolation transformer 61 supplies power to the transfer branch module 3 and the main branch module 2 through a first power supply line and supplies power to the quick mechanical switch module 1 through a second power supply line 52; this way, the 500kV potential in the dc breaker valve tower provided by the embodiment of the present invention can be isolated from the ground potential.
In an embodiment, as shown in fig. 10 and 11, the transfer branch module 3 comprises: a plurality of transfer branch valve module layers, and two adjacent transfer branch valve module layers are fixedly connected through a first insulating beam 31; each transfer branch valve module layer includes two transfer branch valve modules 32; an electrical connection structure 33 connected with the surge arrester module 4 is provided between the two transfer branch valve modules 32, and the two transfer branch valve modules 32 are symmetrical with respect to the electrical connection structure 33. The transfer branch valve module layer has five layers, and each transfer branch valve module layer is formed by connecting and fixing two transfer branch valve modules 32 through three aluminum beams 34; the three aluminum beams 34 are supported by the first insulating beam 31, thereby supporting the transfer branch valve module layer; the electrical connection 33 between the two transfer branch valve modules 32 is fixed by means of a transfer branch cross arm insulator and an aluminium beam 34.
In addition, each transfer branch valve module layer is provided with a first interlayer insulation transformer 35 and a first power supply module 36; the first interlayer insulation transformer 35 is used for isolating the voltage between each transfer branch valve module layer and supplying power to the first power supply module 36, so that the voltage on each transfer branch valve module layer is not affected; the first power module 36 is used to supply power to the transfer branch valve module layer. Specifically, the same side of each transfer branch valve module layer is provided with steel beams supported by the first insulating beam 31, the steel beams are provided with a first interlayer insulating transformer 35 and a first power supply module 36, and the two first power supply modules 36 are arranged on two sides of the first interlayer insulating transformer 35; the two first power supply modules 36 respectively supply power to the two transfer branch valve modules 32 on the layer of the transfer branch valve module 32; specifically, five first interlayer insulation transformers 35 are sequentially connected in series, one end of the first interlayer insulation transformer 35 in the lowest transfer branch valve module layer is connected with the ground isolation transformer 61 through the first power supply line and the cable and used for receiving electric energy provided by the ground isolation transformer 61, and the other end of the first interlayer insulation transformer 35 is connected with two first power supply modules 36 in the corresponding transfer branch valve module layer and used for supplying power to the two first power supply modules 36; the first power supply module 36 also supplies power to the corresponding transfer branch cable, so that the magnetic ring in the transfer branch valve module 32 can obtain electric energy through the transfer branch cable, thereby supplying power to the board card in the transfer branch valve module 32; wherein, the first power supply module 36 includes: a first distributed transformer and a first reactor; the first distributed transformer mainly supplies power to the transfer branch valve module 32, and the first reactor can prevent sudden current change in the transfer branch valve module 32, so that a fault is avoided.
In one embodiment, as shown in fig. 12 and 13, the primary branch module 2 includes: the system comprises a plurality of main branch valve modules 21, main branch lightning arrester sub-modules 22 and second power supply modules 23, wherein adjacent main branch valve modules 21 are fixedly connected; the main branch lightning arrester sub-module 2 is attached to and connected with the main branch valve module 21; a second power supply module 23 is disposed on each main branch valve module 21 for supplying power to the main branch valve modules 21. The number of the main branch valve modules 21 and the number of the second power supply modules 23 are three, each main branch valve module 21 is supported by a first support insulator 24, and two adjacent main branch valve modules 21 are fixedly connected by a support aluminum beam 25, wherein the support aluminum beam 25 can also be used as a through-flow row; the second power supply module 23 is disposed on the same side of each main branch valve module 21, and is configured to supply power to each main branch valve module 21; specifically, one end of the second power supply module 23 is connected to the ground isolation transformer 61 through the first power supply line and the cable, and is configured to receive the power supplied by the ground isolation transformer 61, and the other end of the second power supply module is connected to the main branch cable in the main branch valve module 21, and is configured to supply power to the main branch cable; thus, the magnetic ring in the main branch valve module 21 can obtain electric energy through the main branch cable, so as to supply power to the board card and the bypass switch in the main branch valve module 21; the second power supply module 23 includes: a second distributed transformer and a second reactor; the second distribution transformer mainly supplies power to the main branch cables in the main branch valve module 21, and the second reactor can prevent sudden current changes in the main branch valve module 21, so that faults are avoided. The main branch lightning arrester sub-module 22 is connected in parallel with the three main branch valve modules 21 and is mounted on the support base plate 5 through a second insulating beam 26 for receiving a fault current generated in the main branch module 2, thereby protecting the main branch module 2.
In one example, as shown in fig. 14 and 15, the fast mechanical switch module 1 includes: a plurality of rapid mechanical switch module layers, and two adjacent rapid mechanical switch module layers are fixedly connected through a fourth insulating beam 11; and a second interlayer insulating transformer 12 is arranged on each quick mechanical switch module layer and used for isolating the voltage between each quick mechanical switch valve module layer and supplying power to the corresponding quick mechanical switch module layer, so that the voltage on each quick mechanical switch module layer is not influenced. The rapid mechanical switch module layer has five layers, and each rapid mechanical switch module layer comprises two rapid mechanical switch submodules 13; and each fast mechanical switch sub-module 13 is supported by four fourth insulating beams 11.
Each fast mechanical switch submodule 13 comprises: a fast mechanical switch body; a control cabinet 132 for controlling a closed state of the quick mechanical switch body; a resistor-capacitor 133 for equalizing the voltage of the fast mechanical switch body; and a first support plate 134 for supporting the fast mechanical switch body, the control cabinet 132 and the resistor-capacitor 133. Specifically, the first supporting plate 134 on the adjacent fast mechanical switch module layer is fixedly connected through the fourth insulating beam 11, and the fast mechanical switch body, the control cabinet 132 and the resistance-capacitance unit 133 are placed on the first supporting plate 134 to support the fast mechanical switch body, the control cabinet 132 and the resistance-capacitance unit 133.
Specifically, five second interlayer insulation transformers 12 are sequentially connected in series, one end of the second interlayer insulation transformer 12 in the lowest layer of the rapid mechanical switch module layer is connected with the ground insulation transformer 61 through a second power supply line cable and used for receiving electric energy provided by the ground insulation transformer 61, and the other end of the second interlayer insulation transformer 12 is used for supplying power to the control cabinet 132 in the corresponding rapid mechanical switch module layer.
In one example, as shown in fig. 16 and 17, the surge arrester module 4 includes: a plurality of lightning arrester module layers, and two adjacent lightning arrester module layers are fixedly connected through a third insulating beam 43; each arrester module layer comprises two arrester sub-modules 42; two arrester sub-modules 42 set up side by side, and every arrester sub-module 42 is supported by four third insulating beams 43, and is provided with a plurality of arrester bodies 421 on the arrester sub-module 42. The lightning arrester module layer has five layers, and eight lightning arrester bodies 421 are arranged on each lightning arrester submodule 42; arrester submodule 42 also includes: the second supporting plate 422, the second supporting plate 422 is fixedly connected with the third insulating beam 43, for supporting the arrester body 421; and the two lightning arrester sub-modules 42 on each lightning arrester module layer are fixedly connected through a lightning arrester cross arm insulator.
In an embodiment, as shown in fig. 19 to 21, a dc breaker valve tower provided by an embodiment of the present invention further includes: and the shielding cover is used for covering the quick mechanical switch module 1, the transfer branch module 3, the lightning arrester module 4 and the supporting bottom plate 5.
Specifically, the shield case includes: the shielding cover of the supporting bottom plate, the interlayer shielding cover and the top layer shielding cover; the supporting bottom plate shielding cover is used for coating the side wall of the steel plate; and the supporting bottom plate shield case includes: two linear type equalizer rings 811, four angle equalizer rings 812 adopt the double-pipe structure of aluminum alloy, and the single tube diameter is 300 mm. The linear grading rings 811 and the angular grading rings 812 are slightly lower in center than the steel discs and can encase the vertical support insulators 71.
As shown in fig. 20, the interlayer shield case includes: a pipe-type shield 821 and a plate-type corner shield 822 for covering the side walls of the fast mechanical switch module 1, the transfer branch module 3 and the arrester module 4; wherein, the interlayer shielding cover has five layers; each interlayer shield cover is composed of fourteen tubular shield covers 821 and four plate-type corner shield covers 822, the diameter of the tube of the tubular shield cover 821 is 120mm, the plate thickness is 180mm, and the shape is E-shaped. Specifically, three tubular shielding covers 821 are respectively arranged on two sides of each layer of the transfer branch module 3, and the quick mechanical switch module 1 and the lightning arrester module 4 are respectively provided with four tubular shielding covers 821 and two plate-type angle shielding covers 822.
As shown in fig. 21, a top shield is used to cover the tops of the fast mechanical switch module 1, the main branch module 2, the transfer branch module 3, and the surge arrester module 4. Specifically, the top layer shield includes: the transfer branch top layer shield 831, the quick mechanical switch top layer shield 832 and the arrester shield 833 are all of aluminum alloy double-tube type structures, and the diameters of single tubes are 300 mm; wherein, it is provided with two branch road top layer shield covers 831 to shift branch road module 3 top, is provided with two quick mechanical switch top layer shield covers 832 above quick mechanical switch module 1, is provided with an arrester top layer shield cover 83 above arrester module 4. The top layer shielding cover is also provided with a line outlet pipe female 834 which is fixed below the transfer branch top layer shielding cover 831, the quick mechanical switch top layer shielding cover 832 and the arrester top layer shielding cover 83, the two transfer branch top layer shielding covers 831 are also connected through a transfer branch equipotential line, and the transfer branch equipotential line is also connected with a line outlet pipe female which is fixed on the arrester top layer shielding cover 833; in this way, the potentials of the transfer branch module 3, the quick mechanical switch module 1 and the surge arrester module 4 can be equalized.
The embodiment of the invention provides a direct current breaker valve tower, which further comprises: a first branch electrical structure and a second branch electrical structure; the first branch electrical structure includes: the electrical connection of the main branch module 2 is in electrical connection with the quick mechanical switch module 1; the second branch electrical structure includes: the electrical connection of the diversion leg module 3 is in electrical connection with the arrester module 4.
As shown in fig. 22 and 23, which are connection relationship diagrams of the first branch electrical structure, a first busbar 101 is connected to a main branch busbar on a supporting base plate 5 through an incoming line interface of a main branch module 2, and a second busbar 102 is connected to a fast mechanical switch module 1 through an outgoing line interface; ten quick mechanical switch bodies in the quick mechanical switch module 1 are sequentially connected in series through a third busbar 103 and a fourth busbar 104, and the top quick mechanical switch module 1 layer in the quick mechanical switch module 1 is connected with the wire outlet pipe bus 824 on the top shielding case through a fifth busbar 105.
As shown in fig. 24, which is a connection relationship diagram of the second branch electrical structure, the incoming line interface of the lightning arrester module 4 is connected to the incoming line 51 on the supporting baseplate 5 through the lightning arrester incoming line busbar, and the lightning arrester outgoing line busbar is connected to the outgoing line pipe busbar on the top layer shielding case through the outgoing line interface; according to the introduction of the lightning arrester module 4, two lightning arrester sub-modules in the lightning arrester module layer are arranged side by side, and eight lightning arrester bodies 421 are arranged in each lightning arrester sub-module; here, the two arrester sub-modules 42 in the arrester module 4 layer are a first arrester sub-module 423 and a second arrester sub-module 424; the lower surfaces of eight sections of lightning arrester bodies in the first lightning arrester submodule 423 are connected in parallel, the upper surfaces are divided into two rows, and every four sections are connected in parallel; the upper surfaces of eight sections of arrester bodies in the second arrester submodule 424 are connected in parallel, the lower surfaces are divided into two rows, and every four sections are connected in parallel; one row of the upper surfaces of the eight arrester bodies in the first arrester submodule 423 is connected with the second arrester submodule 424 through the sixth busbar 106 to detect the current value; one of the lower surfaces of eight arrester bodies in the second arrester sub-module 424 is connected with the first arrester sub-module 423 through a seventh busbar 107 to detect a current value of the eight arrester bodies, the sixth busbar 106 and the seventh busbar 107 are connected to an eighth busbar 108 after the current value is detected, the eighth busbar 108 is connected in parallel with the transfer branch module 3, and specifically, the eighth busbar 108 is connected with the electrical connection structure 33 in the transfer branch; in addition, two lightning arrester sub-modules in each lightning arrester module 4 layer are connected in parallel with the corresponding transfer branch sub-modules in the transfer branch module 3 layer through a ninth busbar 109 and a tenth busbar 110, respectively.
In an embodiment, as shown in fig. 25 and 26, an embodiment of the present invention provides a dc breaker valve tower further including: a water pipe; the water pipe includes: the ground water pipe 100, the switching water pipe 200, the main water pipe 300 and the branch water pipe 400; the ground water pipe 100 is arranged below the support bottom plate 5, is in fit connection with the main branch ground fiber tank 92 and is used for introducing external water resources; the switching water pipe 200 is arranged on the supporting bottom plate 5 and used for switching out water resources in the ground water pipe 100; the main water pipe 300 is arranged in the main branch module 2, and is used for receiving and outputting water resources which are rotated out of the contra-rotating water pipe 200; the branch water pipe 400 is disposed in the main branch module 2, and is configured to receive water resources output by the main water pipe 300, transmit the water resources to a heat sink in the main branch module 2, and dissipate heat of the IGBT in the main branch module 2. Wherein, the ground water pipe 100 adopts two PVDF water pipes with the pipe diameter of 90 mm; the switching water pipe 200 adopts two steel water pipes with the pipe diameter of 73mm and the water capacity of 316L, each steel water pipe is provided with four interfaces and an exhaust valve, one of the interfaces is connected with the ground water pipe 100 and has the pipe diameter of 90mm, and the other three interfaces are connected with the main water pipe 300 and have the pipe diameter of 40 mm; the main water pipe 300 adopts three PVDF water pipes with the pipe diameter of 40 mm; the branch water tubes 400 have nine sets of PVDF water tubes having a tube diameter of 16 mm.
The embodiment of the invention provides a direct-current breaker valve tower, wherein a quick mechanical switch module 1, a main branch module 2, a transfer branch module 3 and a lightning arrester module 4 are connected in a fitting manner and are arranged on a supporting bottom plate 5; the structure of the valve tower of the direct-current circuit breaker provided by the embodiment of the invention is clear in partition, more compact and small in occupied space. The rapid mechanical switch module 1, the transfer branch module 3 and the lightning arrester module 4 are arranged on the support bottom plate 5 in a multi-layer mode and are equal in height; the main branch module 2 is arranged on the supporting bottom plate 5 in a single layer and is lower than the quick mechanical switch module 1, the transfer branch module 3 and the lightning arrester module 4 in height. Through the layout mode, a gap is formed between the quick mechanical switch module 1 and the transfer branch module 3, namely above the main branch module 2, and when the quick mechanical switch module 1 and/or the transfer branch module 3 breaks down, the quick mechanical switch module and/or the transfer branch module can be maintained through the gap; in addition, the design of the supporting bottom plate 5 can also greatly improve the earthquake-resistant performance.
The arrangement of the optical fiber grooves in the valve tower of the direct-current circuit breaker provided by the embodiment of the invention enables optical fiber signals to be transmitted to the quick mechanical switch module 1, the main branch module 2, the transfer branch module 3 and the lightning arrester module 4, so that optical fiber communication is realized.
The energy supply tower in the valve tower of the direct-current circuit breaker provided by the embodiment of the invention can effectively supply energy to the transfer branch module 3, the main branch module 2 and the quick mechanical switch module 1.
According to the arrangement of the shielding case in the valve tower of the direct-current circuit breaker, the mechanical switch module 1, the transfer branch module 3 and the lightning arrester module 4 are coated to be isolated from the outside, so that the mechanical switch module, the transfer branch module and the lightning arrester module are protected.
According to the arrangement of the first branch circuit electrical structure and the second branch circuit electrical structure in the direct current breaker valve tower, the main branch circuit module 2 is electrically connected with the quick mechanical switch module 1; the transfer branch module 3 is electrically connected with the lightning arrester module 4.
The arrangement of the water pipe in the valve tower of the direct-current circuit breaker provided by the embodiment of the invention realizes the heat dissipation of the IGBT in the main branch module 2.
The foregoing is a preferred embodiment of the present invention, and it should be noted that it would be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the principles of the invention, and such modifications and enhancements are also considered to be within the scope of the invention.
Claims (12)
1. A dc breaker valve tower, comprising: the system comprises a quick mechanical switch module, a main branch module, a transfer branch module and a lightning arrester module;
the main branch module is arranged between the quick mechanical switch module and the transfer branch module and is respectively connected with the quick mechanical switch module and the transfer branch module in an attaching manner;
one side of the transfer branch module, which is far away from the main branch module, is attached to and connected with the lightning arrester module.
2. The dc breaker valve tower of claim 1, further comprising: a bottom plate is supported by the supporting plate,
the rapid mechanical switch module, the transfer branch module and the lightning arrester module are arranged on the supporting bottom plate in a multi-layer mode and are equal in height;
the main branch circuit module is arranged on the supporting bottom plate in a single layer mode and is lower than the rapid mechanical switch module, the transfer branch circuit module and the lightning arrester module in height.
3. The direct current breaker valve tower of claim 2, wherein the support base plate is provided with a fast mechanical switch optical fiber groove, a main branch optical fiber groove, a transfer branch optical fiber groove and a lightning arrester optical fiber groove above, and a ground optical fiber groove below;
the rapid mechanical switch optical fiber groove, the main branch optical fiber groove, the transfer branch optical fiber groove, the lightning arrester optical fiber groove and the ground optical fiber groove are used for placing optical fibers;
the ground fiber groove is respectively connected with the rapid mechanical switch fiber groove, the main branch fiber groove, the transfer branch fiber groove and the lightning arrester fiber groove through fiber groove interfaces.
4. The dc breaker valve tower of claim 2, further comprising: a water pipe;
the water pipe includes: the water supply system comprises a ground water pipe, a switching water pipe, a main water pipe and a branch water pipe;
the ground water pipe is arranged below the supporting bottom plate and used for introducing external water resources;
the switching water pipe is arranged on the supporting bottom plate and used for switching out water resources in the ground water pipe;
the main water pipe is arranged in the main branch module and used for receiving and outputting water resources which are turned out by the contra-rotating water receiving pipe;
the branch water pipe is arranged in the main branch module and used for receiving water resources output by the main water pipe, transmitting the water resources to the radiator in the main branch module and radiating heat of the IGBT in the main branch.
5. The dc breaker valve tower of claim 2, wherein the transfer branch module comprises: the system comprises a plurality of transfer branch valve module layers, wherein two adjacent transfer branch valve module layers are fixedly connected through a first insulating beam;
each transfer branch valve module layer comprises two transfer branch valve modules;
an electrical connection structure connected with the lightning arrester module is arranged between the two transfer branch valve modules, and the two transfer branch valve modules are symmetrical about the electrical connection structure.
6. The dc breaker valve tower of claim 5, wherein a first inter-layer insulation transformer and a first power supply module are disposed on each of the transfer branch valve module layers;
the first interlayer insulating transformer is used for isolating the voltage between the module layers of each transfer branch valve;
the first power supply module is used for supplying power to the transfer branch valve module layer.
7. The dc breaker valve tower of claim 2, wherein the main branch module comprises: the system comprises a plurality of main branch valve modules, main branch lightning arrester sub-modules and a second power supply module, wherein adjacent main branch valve modules are fixedly connected;
the main branch lightning arrester sub-module is attached to and connected with the main branch valve module;
and each main branch valve module is provided with a second power supply module for supplying power to the main branch valve module.
8. The dc breaker valve tower of claim 2, wherein the fast mechanical switch module comprises: the quick mechanical switch module layers are fixedly connected with each other through a fourth insulating beam;
and a second interlayer insulating transformer is arranged on each quick mechanical switch module layer and used for isolating the voltage between the transfer branch valve module layers.
9. The dc breaker valve tower of claim 8, wherein each of the fast mechanical switch module layers comprises two fast mechanical switch submodules;
the fast mechanical switch submodule includes: a fast mechanical switch body;
the control cabinet is used for controlling the closing state of the quick mechanical switch body;
the resistance-capacitance is used for balancing the voltage of the rapid mechanical switch body;
the first supporting plate is used for supporting the quick mechanical switch body, the control cabinet and the resistor-capacitor.
10. The dc breaker valve tower of claim 2, wherein the surge arrester module comprises: the lightning arrester module layers are fixedly connected with each other through a third insulating beam;
each lightning arrester module layer comprises two lightning arrester sub-modules;
two the arrester submodule piece sets up side by side, just be provided with a plurality of arrester bodies on the arrester submodule piece.
11. The dc breaker valve tower of claim 1, further comprising: and the shielding cover is used for covering the quick mechanical switch module, the transfer branch module, the lightning arrester module and the supporting bottom plate.
12. The dc breaker valve tower of claim 11, wherein the shield comprises: the shielding cover of the supporting bottom plate, the interlayer shielding cover and the top layer shielding cover;
the supporting bottom plate shielding cover is used for coating the side wall of the steel plate;
the interlayer shielding cover is used for coating the side walls of the rapid mechanical switch module, the transfer branch module and the lightning arrester module;
the top layer shielding case is used for covering the tops of the quick mechanical switch module, the main branch module, the transfer branch module and the lightning arrester module.
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