CN215071324U - Double-voltage gas-insulated enclosed switchgear - Google Patents
Double-voltage gas-insulated enclosed switchgear Download PDFInfo
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- CN215071324U CN215071324U CN202121564945.8U CN202121564945U CN215071324U CN 215071324 U CN215071324 U CN 215071324U CN 202121564945 U CN202121564945 U CN 202121564945U CN 215071324 U CN215071324 U CN 215071324U
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Abstract
The utility model belongs to the field of power equipment, and discloses a double-voltage gas-insulated enclosed switchgear, which comprises a control cubicle, a three-phase common-box main bus, a circuit breaker mechanism, a current transformer, a third isolating switch assembly, a quick grounding switch assembly, a voltage transformer, a cable terminal, a branch bus, a fourth isolating switch assembly, a first isolating switch assembly and a second isolating switch assembly; the voltage transformer comprises two groups of low-voltage coils; when the operating voltage of the gas insulated switchgear is a first preset voltage, two groups of low-voltage coils are connected in parallel and then output; and when the operating voltage of the gas insulated closed switch equipment is a second preset voltage, the two groups of low-voltage coils are connected in series and then output. The operation and transmission of two rated voltages are met only through one set of GIS, the structure is simple, the equipment investment is small, the occupied space is small, and the construction cost of the power generation ship is reduced.
Description
Technical Field
The utility model belongs to the power equipment field relates to a two voltage gas insulation seal switch equipment.
Background
With the continuous demand for electric power, how to provide environment-friendly and convenient electric power for land or harbors has become a hot issue today. Under the background, the power generation ship is produced at the same time, is a ship with high comprehensiveness, and has the advantages of less land occupation, quick construction, mobility, environmental protection and the like compared with land power generation or shore power generation. The power generating ship usually uses natural gas as fuel, is provided with complete sets of power generating, transforming, distributing and transmitting equipment, is a water power station which can be flexibly moved, mainly provides power for industrial areas of nearby water areas or other ships, and can also be used as a power supply of small and medium cities in the coast or is transmitted to inland power utilization areas through a power grid.
At present, the rated voltage of a GIS (gas insulated switchgear) in the distribution equipment of a power generation ship is 126kV or 252kV, and in order to meet the rated voltages of the two voltage classes, the power generation ship is respectively provided with a set of 126kV GIS and a set of 252kV GIS. However, the two sets of GIS are configured, which not only increases the investment of electrical equipment for the power generating ship, but also increases the construction cost of the power generating ship.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art, two sets of GIS of electricity generation ship configuration have not only increased the input of electricity generation ship electrical equipment, have also increased the construction cost's of electricity generation ship self shortcoming, provide a two voltage gas insulation closed switch equipment.
In order to achieve the above purpose, the utility model adopts the following technical scheme to realize:
a double-voltage gas-insulated enclosed switchgear comprises a control cubicle, a circuit breaker and a circuit breaker mechanism connected with the circuit breaker; the circuit breaker is provided with a first current transformer and a second current transformer which are electrically connected; the first current transformer is provided with a first isolating switch component and a second isolating switch component which are electrically connected; the first isolating switch assembly is provided with an electrically connected three-phase common-box main bus; the second isolating switch assembly is provided with a three-phase common-box main bus which is electrically connected; a third isolating switch assembly which is electrically connected is arranged on the second current transformer; the third isolating switch assembly is provided with a quick grounding switch assembly which is electrically connected; the quick grounding switch assembly is provided with a branch bus and a fourth isolating switch assembly which are electrically connected; a voltage transformer electrically connected is arranged on the fourth isolating switch component; the branch bus is provided with an electrically connected cable terminal; the control cubicle is connected with the breaker mechanism, the current transformer, the third isolating switch assembly, the fast grounding switch assembly, the voltage transformer, the second current transformer, the fourth isolating switch assembly, the first isolating switch assembly and the second isolating switch assembly through cables;
the voltage transformer comprises two groups of low-voltage coils; when the operating voltage of the gas insulated switchgear is a first preset voltage, two groups of low-voltage coils are connected in parallel and then output; and when the operating voltage of the gas insulated closed switch equipment is a second preset voltage, the two groups of low-voltage coils are connected in series and then output.
The utility model discloses further improvement lies in:
the first preset voltage is 252 kV; the second preset voltage is 126 kV.
The fourth isolating switch assembly is provided with an electrically connected lightning arrester; the lightning arrester comprises a first nonlinear resistor, a second nonlinear resistor, a third nonlinear resistor, a rotary contact, a connecting rod, a driving piece and a shell; the shell is provided with a mounting hole; one end of the connecting rod is connected with the driving piece, and the other end of the connecting rod penetrates through the mounting hole to be connected with a rotary contact inside the shell; one end of the rotary contact is in contact with the first nonlinear resistor, and the other end of the rotary contact can be respectively in contact with the second nonlinear resistor and the third nonlinear resistor under the driving of the driving piece; when the operating voltage of the gas insulated switchgear is a first preset voltage, the other end of the rotating contact is in contact with the second nonlinear resistor; when the operating voltage of the gas insulated closed switch equipment is a second preset voltage, the other end of the rotating contact is in contact with the third nonlinear resistor.
The driving piece is a manual knob or a driving motor.
The materials of the rotary contact, the first nonlinear resistor, the second nonlinear resistor and the third nonlinear resistor are the same.
Also included are outdoor cable terminations; one end of the outdoor cable terminal is electrically connected with the cable terminal, and the other end of the outdoor cable terminal is provided with a sleeve structure which is electrically connected.
The utility model also comprises a chassis; a cable terminal bracket for supporting a cable terminal is arranged on the underframe; a voltage transformer support for supporting a voltage transformer; a fourth isolator assembly support for supporting a fourth isolator assembly; a second isolator assembly support for supporting a second isolator assembly; a first isolator assembly support for supporting a first isolator assembly.
And the cable terminal bracket, the voltage transformer bracket, the fourth isolating switch assembly bracket, the second isolating switch assembly bracket and the first isolating switch assembly bracket are all connected with the underframe through bolts.
The first three-phase common-box main bus, the second three-phase common-box main bus, the circuit breaker mechanism, the current transformer, the third isolating switch assembly, the quick grounding switch assembly, the voltage transformer, the cable terminal, the branch bus, the fourth isolating switch assembly, the first isolating switch assembly and the second isolating switch assembly are arranged in a layered mode; the first layer from bottom to top is a circuit breaker, a circuit breaker mechanism, a current transformer and a voltage transformer; the second layer comprises a cable terminal, a fourth isolating switch assembly, a first isolating switch assembly and a second isolating switch assembly; the third layer is a first three-phase common-box main bus, a second three-phase common-box main bus, a branch bus, a third isolating switch assembly and a quick grounding switch assembly.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses two voltage gas insulation closed switch equipment, change the secondary voltage through the connected mode of two sets of low voltage coils of control voltage transformer, when taking the parallel connection mode to connect, low pressure output voltage can match when high voltage conductor rated voltage is first preset voltage; when the series connection mode is adopted, the low-voltage output voltage can be matched with the rated voltage of the high-voltage conductor when the rated voltage is the second preset voltage, the normal use of the first preset voltage and the second preset voltage can be simultaneously met, the operating voltage and the current of the two voltage grades can be measured, monitored and protected, the equipment cost is effectively reduced, meanwhile, the occupied space of the GIS is reduced, the operation and the transmission of the two rated voltages are met only through one set of GIS, and the construction cost of the power generation ship is reduced.
Furthermore, the driving part of the lightning arrester drives the position of the rotary contact to change the limited length of the whole nonlinear resistor, so that leakage current measurement and overvoltage protection are realized under two GIS rated voltages of a first preset voltage and a second preset voltage, one lightning arrester meets normal use of two voltage levels, and compared with the existing mode of arranging two lightning arresters, the number of the lightning arresters is reduced, and the cost and the space are reduced.
Furthermore, the GIS simultaneously satisfies two kinds of outlet forms and simple structure, and occupation space is little, and the installation is nimble, convenient operation.
Furthermore, the elements of the whole GIS are arranged on the underframe, so that the GIS can be transported integrally.
Furthermore, the layered arrangement mode is adopted, compared with the traditional arrangement structure, the structure is compact, the gravity center height of the GIS is effectively reduced, the elements with larger weight are arranged on the lower layer, the elements with smaller mass are arranged on the higher layer, and the GIS has better vibration resistance and attractiveness.
Drawings
Fig. 1 is a schematic structural view of a dual-voltage gas-insulated enclosed switchgear of the present invention;
fig. 2 is a schematic block diagram of a voltage transformer of the dual-voltage gas-insulated enclosed switchgear of the present invention;
fig. 3 is a schematic structural view of the arrester of the double-voltage gas-insulated enclosed switchgear of the present invention;
fig. 4 is the utility model discloses a two voltage gas insulation seal switchgear outdoor cable termination structure sketch map.
Wherein: 1-a first three-phase common-box main bus; 2-a second three-phase common-box main bus; 3-a circuit breaker; 4-a circuit breaker mechanism; 5-a first current transformer; 6-a third isolator switch assembly; 7-a fast grounding switch assembly; 8-a voltage transformer; 9-a lightning arrester; 10-cable termination; 11-a chassis; 12-a second current transformer 12; 13-cable termination brackets; 14-branch bus; 15-a fourth isolator switch assembly; 16-a first isolator switch assembly; 17-a second isolator switch assembly; 18-a first non-linear resistance; 19-a rotary contact; 20-a drive member; 21-a second non-linear resistance; 22-outdoor cable termination.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments 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 shall belong to the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
First, the related terms to which the present invention relates are introduced.
The power generation ship: a movable water power station using natural gas as fuel and containing complete sets of power generation, transformation, distribution and transmission equipment mainly provides power for nearby water areas industrial areas or other ships, can also be used as a power supply of small and medium cities in the coast, or can be transmitted to inland power utilization areas through a power grid. And GIS: gas-insulated switchgear enclosure. Element (b): functional modules of GIS, such as: circuit breakers, current transformers, disconnectors, voltage transformers, lightning arresters, and the like. A voltage transformer: a GIS component converts primary voltage in a GIS loop into required secondary voltage according to a certain transformation ratio, and the measurement, protection and monitoring of the GIS are realized by monitoring the secondary voltage. A lightning arrester: GIS's lightning protection equipment component, arrester and the parallelly connected installation of GIS major loop and one end ground connection, discharge through the arrester and restrict the rising of GIS voltage to avoid high voltage to GIS equipment electrical insulation's damage. Rated voltage: and the maximum voltage which can be borne by the GIS in normal operation.
The present invention will be described in further detail with reference to the accompanying drawings:
the inventor is based on the background technology, the use requirement of a 252kV GIS can be met in actual work, only the voltage transformer 8 of the 252kV GIS and the voltage transformer 8 of the 126kV GIS cannot be used universally due to different inherent parameters, if the voltage transformer 8 which can simultaneously take the 252kV GIS and the 126kV GIS into account is designed and installed in the 252kV GIS, only one set of 252kV GIS is needed to meet the requirement that the rated voltage is 126kV or 252kV, the cost of the GIS is greatly reduced, meanwhile, the occupied space of GIS equipment is reduced, and the manufacturing difficulty of a power generation ship is reduced.
Based on the above, refer to fig. 1, in an embodiment of the present invention, a dual-voltage gas-insulated enclosed switchgear is provided, which includes a control cubicle, a circuit breaker 3 and a circuit breaker mechanism 4 connected to the circuit breaker 3.
Specifically, the circuit breaker 3 is provided with a first current transformer 5 and a second current transformer 12 which are electrically connected; a first isolating switch assembly 16 and a second isolating switch assembly 17 which are electrically connected are arranged on the first current transformer 5; a first three-phase common-box main bus 1 electrically connected with the first isolating switch assembly 16 is arranged on the first isolating switch assembly; the second three-phase common-box main bus 2 is electrically connected with the second isolating switch assembly 17; the second current transformer 12 is provided with a third isolating switch assembly 6 which is electrically connected; a quick grounding switch component 7 which is electrically connected is arranged on the third isolating switch component 6; the quick grounding switch assembly 7 is provided with a branch bus 14 and a fourth isolating switch assembly 15 which are electrically connected; the fourth isolating switch assembly 15 is provided with an electrically connected voltage transformer 8; the branch bus 14 is provided with an electrically connected cable terminal 10; the control cubicle is connected with the breaker mechanism 4, the current transformer 5, the third isolating switch assembly 6, the fast grounding switch assembly 7, the voltage transformer 8, the fourth isolating switch assembly 15, the first isolating switch assembly 16 and the second isolating switch assembly 17 through cables.
Referring to fig. 2, the voltage transformer 8 includes two groups of low voltage coils, which are divided into a low voltage coil 1 and a low voltage coil 2, and the low voltage coil 1 is provided with two interfaces, i.e., an interface a and an interface B; the low-voltage coil 2 is provided with two interfaces of a C interface and a D interface. The low-voltage output voltage is changed by controlling the connection mode of the low-voltage coil 1 and the low-voltage coil 2. When the operating voltage of the gas insulated switchgear is a first preset voltage, the two groups of low-voltage coils are connected in parallel and then output, specifically, the interface A is connected with the interface C and then outputs one path, the interface B is connected with the interface D and then outputs one path, and the low-voltage output voltage can be matched with the rated voltage of the high-voltage conductor when the rated voltage is the first preset voltage. When the operating voltage of the gas insulated switchgear is a second preset voltage, the two groups of low-voltage coils are connected in series and then output, specifically, the interface B is connected with the interface C, the interface A and the interface D output one way respectively, and the low-voltage output voltage can be matched with the rated voltage of the high-voltage conductor when the rated voltage of the high-voltage conductor is the second preset voltage.
Specifically, the voltage transformer 8 may be improved on the basis of the existing voltage transformer, and the low-voltage coils of the existing voltage transformer are changed into the two groups of low-voltage coils.
The first three-phase common-box main bus 1, the second three-phase common-box main bus 2, the circuit breaker 3, the circuit breaker mechanism 4, the current transformer 5, the third isolating switch assembly 6, the quick grounding switch assembly 7, the voltage transformer 8, the cable terminal 10, the second current transformer 12, the branch bus 14, the fourth isolating switch assembly 15, the first isolating switch assembly 16 and the second isolating switch assembly 17 all adopt elements with rated voltages being first preset voltages, and the use of second preset voltage levels can be met simultaneously. The first preset voltage is greater than the second preset voltage.
To sum up, the double-voltage gas-insulated enclosed switchgear of the present invention changes the secondary voltage by controlling the connection mode of the low-voltage coil 1 and the low-voltage coil 2, and when the connection mode is adopted, the low-voltage output voltage can be matched with the rated voltage of the high-voltage conductor as the first preset voltage; when the low-voltage coil 1 and the low-voltage coil 2 are connected in series, the low-voltage output voltage can be matched with the rated voltage of the high-voltage conductor which is a second preset voltage. The normal use of two kinds of voltage levels of first predetermined voltage and second predetermined voltage can be satisfied simultaneously, and the operating voltage, the electric current of two kinds of voltage levels can be measured, monitored and protected, when effectively having reduced equipment cost, have also reduced GIS's occupation space, have reduced the manufacturing degree of difficulty of electricity generation ship.
Preferably, the first preset voltage is 252kV, and the second preset voltage is 126kV, so that the power generating boat is suitable for the existing common power generating boat.
Preferably, referring to fig. 3, the fourth disconnector module 15 is provided with an electrically connected arrester 9; the lightning arrester 9 comprises a first nonlinear resistor 18, a second nonlinear resistor 21, a third nonlinear resistor, a rotary contact 19, a connecting rod, a driving piece 20 and a shell; starting to install a hole on the shell; the connecting rod is made of insulating materials, one end of the connecting rod is connected with the driving piece 20, and the other end of the connecting rod penetrates through the mounting hole to be connected with the rotary contact 19 positioned in the shell; one end of the rotary contact 19 is in contact with the first nonlinear resistor 18, and the other end of the rotary contact can be in contact with the second nonlinear resistor 21 and the third nonlinear resistor respectively under the driving of the driving piece 20; when the operating voltage of the gas insulated switchgear is a first preset voltage, the other end of the rotating contact 19 is in contact with the second nonlinear resistor 21; when the operating voltage of the gas insulated switchgear is a second preset voltage, the other end of the rotating contact 19 is in contact with the third nonlinear resistor.
Firstly, the safety and the stability of the double-voltage gas insulated switchgear are ensured by arranging the lightning arrester 9. Meanwhile, since the arresters 9 of each voltage class cannot be commonly used due to different intrinsic parameters, the nonlinear resistance of the existing arresters is changed to the first nonlinear resistor 18, the second nonlinear resistor 21, the third nonlinear resistor, the rotary contact 19, the link, and the driver 20 on the basis of the existing arresters. And then the first nonlinear resistor 18 and the second nonlinear resistor 21 are connected through the rotary contact 19 to realize the design of the lightning arrester 9 with the first preset voltage, or the first nonlinear resistor 18 and the third nonlinear resistor are connected through the rotary contact 19 to realize the design of the lightning arrester 9 with the second preset voltage, the limited length of the whole nonlinear resistor is changed by driving the position of the rotary contact 19 through the driving piece 20, so that the leakage current measurement and the overvoltage protection under two rated voltages of the first preset voltage and the second preset voltage are realized, one lightning arrester 9 meets the normal use of two voltage classes, and compared with the existing mode of arranging two lightning arresters 9, the cost and the space are reduced.
Preferably, the driving member 20 is a manual knob or a driving motor, and the driving can be realized manually or electrically.
Preferably, the materials of the rotating contact 19, the first nonlinear resistor 18, the second nonlinear resistor 21 and the third nonlinear resistor are the same, so that the influence of different materials is avoided, and the lightning arrester is more suitable for other elements of the existing lightning arrester.
Preferably, referring to fig. 4, also includes an outdoor cable termination 22; the outdoor cable termination 22 is electrically connected to the cable termination 10 at one end and has an electrically connected sleeve structure disposed on the other end. The cable terminal 10 is connected to a high-voltage cable through a high-voltage cable head connection, and outputs electric energy through the high-voltage cable. Alternatively, the cable terminal 10 is connected to the outdoor cable terminal 22 through a high voltage cable connection, and one end of the outdoor cable terminal 22 is connected to the cable terminal 10, and the other end is in a sleeve structure, so that electric energy can be output through an overhead line.
Based on such design, the cable terminal 10 of GIS body configuration can only consider the high tension cable mode of being qualified for the next round of competitions, can simplify the GIS structure greatly like this, if need the overhead line to be qualified for the next round of competitions, can dispose outdoor cable terminal 22 outside the GIS, outdoor cable terminal 22 equipment one end passes through cable junction with GIS's high tension cable terminal 10, the other end is the bushing structure in order to realize the overhead line form of being qualified for the next round of competitions, this kind of configuration design can make GIS satisfy two kinds of forms of being qualified for the next round of competitions simultaneously and simple structure, occupation space is little, the installation is nimble, convenient operation.
Preferably, a chassis 11; in use the base frame 11 is fixed directly to the ground.
A cable terminal bracket 13 for supporting the cable terminal 10 is provided on the chassis 11; a voltage transformer support for supporting the voltage transformer 8; a fourth disconnector module support for supporting a fourth disconnector module 15; a second disconnector module support for supporting a second disconnector module 17; a first isolator assembly support for supporting the first isolator assembly 16. This arrangement allows the entire GIS components to be mounted on the base frame 11, thereby allowing the GIS to be transported as a whole.
Preferably, the cable terminal support 13, the voltage transformer support, the fourth isolating switch assembly support, the second isolating switch assembly support and the first isolating switch assembly support are all connected with the underframe 11 through bolts.
Preferably, the first three-phase common-box main bus 1, the second three-phase common-box main bus 2, the circuit breaker 3, the circuit breaker mechanism 4, the current transformer 5, the third disconnecting switch assembly 6, the fast grounding switch assembly 7, the voltage transformer 8, the cable terminal 10, the branch bus 14, the fourth disconnecting switch assembly 15, the first disconnecting switch assembly 16 and the second disconnecting switch assembly 17 are arranged in a layered manner; the first layer from bottom to top is a circuit breaker 3, a circuit breaker mechanism 4, a current transformer 5, a lightning arrester 9 and a voltage transformer 8; the second layer is a cable terminal 10, a fourth isolating switch assembly 15, a first isolating switch assembly 16 and a second isolating switch assembly 17; the third layer is a first three-phase common-box main bus 1, a second three-phase common-box main bus 2, a branch bus 14, a third isolating switch assembly 6 and a quick grounding switch assembly 7.
Compared with the traditional arrangement structure, the layered arrangement mode has the advantages that the structure is compact, the gravity center height of the GIS is effectively reduced, the elements with larger weight are arranged on the lower layer, the elements with smaller mass are arranged on the upper layer, and the GIS has better vibration resistance and attractiveness.
The above contents are only for explaining the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby, and any modification made on the basis of the technical solution according to the technical idea of the present invention all fall within the protection scope of the claims of the present invention.
Claims (9)
1. A double-voltage gas-insulated enclosed switchgear is characterized by comprising a control cubicle, a circuit breaker (3) and a circuit breaker mechanism (4) connected with the circuit breaker (3);
a first current transformer (5) and a second current transformer (12) which are electrically connected are arranged on the circuit breaker (3); a first isolating switch assembly (16) and a second isolating switch assembly (17) which are electrically connected are arranged on the first current transformer (5); a first three-phase common-box main bus (1) which is electrically connected is arranged on the first isolating switch assembly (16); a second three-phase common-box main bus (2) which is electrically connected is arranged on the second isolating switch assembly (17); a third isolating switch assembly (6) which is electrically connected is arranged on the second current transformer (12); a quick grounding switch component (7) which is electrically connected is arranged on the third isolating switch component (6); a branch bus (14) and a fourth isolating switch component (15) which are electrically connected are arranged on the quick grounding switch component (7); a voltage transformer (8) which is electrically connected is arranged on the fourth isolating switch component (15); the branch bus (14) is provided with an electrically connected cable terminal (10); the control cubicle is connected with a breaker mechanism (4), a current transformer (5), a third isolating switch assembly (6), a fast grounding switch assembly (7), a voltage transformer (8), a second current transformer (12), a fourth isolating switch assembly (15), a first isolating switch assembly (16) and a second isolating switch assembly (17) through cables;
the voltage transformer (8) comprises two groups of low-voltage coils; when the operating voltage of the gas insulated switchgear is a first preset voltage, two groups of low-voltage coils are connected in parallel and then output; and when the operating voltage of the gas insulated closed switch equipment is a second preset voltage, the two groups of low-voltage coils are connected in series and then output.
2. Double voltage gas-insulated switchgear according to claim 1, characterized in that the first preset voltage is 252 kV; the second preset voltage is 126 kV.
3. Double voltage gas-insulated switchgear according to claim 1, characterized in that the fourth disconnector module (15) is provided with an electrically connected surge arrester (9); the lightning arrester (9) comprises a first nonlinear resistor (18), a second nonlinear resistor (21), a third nonlinear resistor, a rotary contact (19), a connecting rod, a driving piece (20) and a shell;
the shell is provided with a mounting hole; one end of the connecting rod is connected with a driving piece (20), and the other end of the connecting rod passes through the mounting hole to be connected with a rotary contact (19) positioned in the shell; one end of the rotary contact (19) is in contact with the first nonlinear resistor (18), and the other end of the rotary contact can be respectively in contact with the second nonlinear resistor (21) and the third nonlinear resistor under the driving of the driving piece (20); when the operating voltage of the gas insulated switchgear is a first preset voltage, the other end of the rotating contact (19) is in contact with a second nonlinear resistor (21); when the operating voltage of the gas insulated closed switch equipment is a second preset voltage, the other end of the rotating contact (19) is in contact with the third nonlinear resistor.
4. Double voltage gas-insulated switchgear according to claim 3, characterized in that the drive (20) is a manual knob or a drive motor.
5. Double voltage gas-insulated switchgear according to claim 3, characterized in that the rotary contact (19), the first non-linear resistor (18), the second non-linear resistor (21) and the third non-linear resistor are of the same material.
6. Double voltage gas-insulated switchgear closure according to claim 1, characterized in that it further comprises an outdoor cable termination (22); one end of the outdoor cable terminal (22) is electrically connected with the cable terminal (10), and the other end is provided with a sleeve structure which is electrically connected.
7. Double voltage gas-insulated switchgear enclosure according to claim 1, characterized in that it further comprises a chassis (11); a cable terminal bracket (13) for supporting the cable terminal (10) is arranged on the chassis (11); a voltage transformer support for supporting a voltage transformer (8); a fourth disconnector module support for supporting a fourth disconnector module (15); a second disconnector assembly support for supporting a second disconnector assembly (17); a first isolator assembly support for supporting a first isolator assembly (16).
8. Double voltage gas-insulated switchgear enclosure according to claim 7, characterized in that the cable termination bracket (13), the voltage transformer bracket, the fourth disconnector module bracket, the second disconnector module bracket and the first disconnector module bracket are bolted to the underframe (11).
9. The dual-voltage gas-insulated switchgear according to claim 1, characterized in that the first (1), second (2), circuit breaker (3), circuit breaker mechanism (4), current transformer (5), third disconnector assembly (6), fast grounding switch assembly (7), voltage transformer (8), cable termination (10), branch bus (14), fourth disconnector assembly (15), first disconnector assembly (16) and second disconnector assembly (17) are arranged in layers; the first layer from bottom to top is a circuit breaker (3), a circuit breaker mechanism (4), a current transformer (5) and a voltage transformer (8); the second layer is a cable terminal (10), a fourth isolating switch component (15), a first isolating switch component (16) and a second isolating switch component (17); the third layer is a first three-phase common-box main bus (1), a second three-phase common-box main bus (2), a branch bus (14), a third isolating switch assembly (6) and a quick grounding switch assembly (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121564945.8U CN215071324U (en) | 2021-07-09 | 2021-07-09 | Double-voltage gas-insulated enclosed switchgear |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121564945.8U CN215071324U (en) | 2021-07-09 | 2021-07-09 | Double-voltage gas-insulated enclosed switchgear |
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| CN215071324U true CN215071324U (en) | 2021-12-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115207870A (en) * | 2022-07-22 | 2022-10-18 | 山东电力工程咨询院有限公司 | A protection system and protection method for dual voltage levels of floating power station |
-
2021
- 2021-07-09 CN CN202121564945.8U patent/CN215071324U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115207870A (en) * | 2022-07-22 | 2022-10-18 | 山东电力工程咨询院有限公司 | A protection system and protection method for dual voltage levels of floating power station |
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