Static VAR generator with hot-swap and plug-and-play functions and use method thereof

Abstract

The present invention discloses a static VAR generator with hot-swap and plug-and-play functions and a method for using the same, comprising a cabinet, a host computer installed on the cabinet, and a plurality of SVG modules installed in the cabinet, wherein a plurality of partition assemblies for installing the SVG modules are arranged in the cabinet, a vertically arranged NABC four-phase vertical busbar is insulated and installed on the rear side of the partition assembly in the cabinet, a NABC four-phase static contact that can match the NABC four-phase vertical busbar is installed on the rear side wall of each SVG module, a cabinet electric control lock is installed on the left side wall of each SVG module, and a lock assembly used in conjunction with the cabinet electric control lock is installed in the cabinet. The present invention can realize plug-and-play and hot-swap of SVG modules.

Description

Technical Field

[0001] The invention relates to a static VAR generator with hot-swap and plug-and-play functions and a use method thereof, belonging to the technical field of static VAR generators. Background Art

[0002] Modular static VAR generators have been widely used in various fields such as industrial and mining enterprises, large-scale industry and commerce, and advanced manufacturing industries due to their excellent dynamic compensation performance, convenience for mass production, and flexible capacity combination. At present, the more common solution is: according to the total capacity required, multiple SVG modules with smaller capacity are connected in parallel to form a screen, and multiple SVG modules are connected to the primary busbar with cables or copper bars, and the secondary monitoring is connected to the host computer through the communication bus; the host computer is responsible for querying and displaying the operation information of each SVG module as a human-machine interface, and the communication address of each SVG module is set separately by the commissioning engineer. The above conventional solution has certain problems in actual application, that is, when a new SVG module is put into operation or replaced, it needs to be installed and set up by professional engineers, and it is easy to cause live misoperation when the module is replaced, resulting in dangers such as arcing and overvoltage, and it is impossible to achieve true "plug and play" and hot swap. Summary of the invention

[0003] In view of the problems existing in the above-mentioned prior art, the present invention provides a static VAR generator with hot-swap and plug-and-play functions and a use method thereof, which can realize the plug-and-play and hot-swap of SVG modules.

[0004] In order to achieve the above-mentioned object, the present invention adopts the following technical scheme: a static VAR generator with hot-swap and plug-and-play functions, comprising a cabinet, a host computer installed on the cabinet, and a plurality of SVG modules installed in the cabinet, wherein the host computer is connected to each SVG module via a communication bus; a plurality of partition assemblies for installing SVG modules are arranged in the cabinet, a vertically arranged NABC four-phase vertical busbar is insulated and installed on the rear side of the partition assembly in the cabinet, and a NABC four-phase static contact capable of cooperating with the NABC four-phase vertical busbar is installed on the rear side wall of each SVG module; a cabinet electric control lock is installed on the left side wall of each SVG module, and a lock assembly used in conjunction with the cabinet electric control lock is installed in the cabinet;

[0005] The NABC four-phase static contacts and cabinet electric control locks on the SVG module are connected to the corresponding SVG module; the NABC four-phase vertical busbar is connected to the power grid through a circuit breaker.

[0006] Furthermore, an SMC insulating material fixing piece is installed on the rear side of each of the partition components, and a plug-in hole for plugging in the NABC four-phase vertical busbar is provided on the SMC insulating material fixing piece.

[0007] Furthermore, the cabinet includes a support frame of a frame structure, a front door panel installed on the front side of the support frame, a rear door panel installed on the rear side of the support frame, a left door panel and a right door panel symmetrically installed on the left and right sides of the support frame, a base plate installed on the bottom of the support frame, and a top plate installed on the top of the support frame, and the front door panel and the rear door panel are both provided with heat dissipation holes; the host computer is installed on the front door panel.

[0008] Furthermore, the support frame includes four symmetrically arranged vertical columns and a number of horizontal columns located at the upper and lower ends of the vertical columns and connected between any two adjacent vertical columns. A number of front-to-rear arranged horizontal plates are connected between the front and rear adjacent vertical columns. Center columns can be slidably installed on the horizontal plates on the left and right sides, and the locking assembly is installed on the center column on the left.

[0009] Furthermore, a lifting lug is installed on the top plate.

[0010] Furthermore, each of the partition components includes two L-shaped support plates symmetrically arranged on the left and right inner sides of the support frame, and the L-shaped support plates are installed on the support frame so as to be movable up and down.

[0011] A method for using a static VAR generator with hot-swap and plug-and-play functions, wherein the number of SVG modules is N, and the method for using the static VAR generator comprises the following steps:

[0012] Step S1, power on the host computer, and number the SVG modules in the cabinet according to their installation positions, which are numbered 0, 1, ..., N-1;

[0013] Step S2, first push the No. 0 SVG module onto the top partition assembly until the NABC four-phase static contact on the rear side of the SVG module is clamped on the NABC four-phase vertical busbar, the lock of the cabinet electric lock is close to the lock assembly, and the communication bus connected to the host computer is connected to the SVG module;

[0014] Step S3: The host computer detects that a new SVG module is connected, and automatically changes the communication address of the SVG module to 0;

[0015] Step S4: Push modules 1 to N-1 in order, repeat steps S2 and S3, and the host computer automatically changes the communication address of the enemy camp module to 1 to N-1;

[0016] Step S5: operate the host computer as needed to start the corresponding SVG modules in sequence, and the started SVG modules send signals to the cabinet electric lock to control the cabinet electric lock and the lock assembly to lock.

[0017] Furthermore, when the SVG module needs to be replaced, except for the SVG module that has stopped running due to a fault, the host computer can be operated to stop the operation of the SVG module that needs to be replaced; the position lock of the SVG module after shutdown is released; the old SVG module is pulled out and the new SVG module is pushed in; the host computer detects that a new SVG module is connected and automatically changes the communication address of the module to the corresponding position number; the host computer is operated to start the corresponding SVG module, and the SVG module after startup automatically controls the cabinet electric lock and the lock assembly to lock the position.

[0018] Furthermore, when it is necessary to increase the SVG module, according to the number M of SVG modules to be added, the host computer is operated to reset the total number of modules to N+M, numbered 0, 1, ..., N+M-1; the new SVG module is pushed in sequence; the host computer detects that a new SVG module is connected, and automatically changes the communication address of the module to the corresponding position number; the host computer is operated to start the corresponding SVG module, and the started SVG module automatically controls the cabinet electric lock and the lock assembly to lock the position.

[0019] Compared with the existing technology, the SVG module of the present invention adopts a plug-in installation method and is arranged in the cabinet. The NABC four-phase static contact installed at the rear of the SVG module can be directly connected with the NABC four-phase vertical busbar when the SVG module is inserted into the partition assembly to achieve connection with the power grid, eliminating the work of cable connection or disassembly, thereby realizing the system live installation or disassembly of the SVG module; the cabinet electric lock on the rear side of the SVG module cooperates with the lock assembly, and under the control of the host computer, it has automatic locking and unlocking functions, which can prevent the SVG module from being pulled out during operation and causing arcing or overvoltage and other dangers; the static VAR generator has an automatic communication networking function, and the SVG module communication address can be automatically allocated and connected, eliminating the tedious setting process when the SVG module is replaced or put into operation; the static VAR generator truly realizes hot-swap and plug-and-play functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the connection between the host computer and the SVG module of the present invention;

[0021] Figure 2 This is a schematic diagram of the logic of the host computer automatically allocating module addresses and status polling in the present invention;

[0022] Figure 3 It is a structural schematic diagram of the present invention;

[0023] Figure 4 for Figure 3 Rear view of

[0024] Figure 5This is a schematic diagram from another perspective after the right door panel and the rear door panel are omitted;

[0025] Figure 6 for Figure 5 Rear view of

[0026] Figure 7 for Figure 5 Right view of;

[0027] Figure 8 This is a schematic diagram of the connections of the SVG module of the present invention;

[0028] Fig. 9 for Figure 8 The main view;

[0029] Fig.10 for Figure 8 A top view of

[0030] Fig.11 The figure is a schematic diagram of the connection between the SVG module of the present invention and the power grid. DETAILED DESCRIPTION

[0031] The following is a clear and complete description of the technical solutions in the implementation of the present invention in conjunction with the accompanying drawings. The described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] like Figures 1 to 11 As shown, a static VAR generator with hot-swap and plug-and-play functions provided by an embodiment of the present invention comprises a cabinet 1, a host computer 2 installed on the cabinet 1, and a plurality of SVG modules 3 installed in the cabinet 1, wherein the host computer 2 is connected to each SVG module 3 via a communication bus; a plurality of partition assemblies 4 for installing the SVG modules 3 are arranged in the cabinet 1, a vertically arranged NABC four-phase vertical busbar 5 is insulated and installed at the rear side of the partition assembly 4 in the cabinet 1, and a NABC four-phase static contact 6 capable of cooperating with the NABC four-phase vertical busbar 5 is installed on the rear side wall of each SVG module 3; a cabinet electric control lock 8 is installed on the left side wall of each SVG module 3, and a lock assembly 7 used in conjunction with the cabinet electric control lock 8 is installed in the cabinet 1; the NABC four-phase static contact 6 and the cabinet electric control lock 8 on the SVG module 3 are both connected to the corresponding SVG module 3; and the NABC four-phase vertical busbar 5 is connected to the power grid via a circuit breaker.

[0033] The SVG module 3 is installed in a drawer-type manner and arranged in the cabinet. Specifically, a cabinet electric lock for position locking is installed at the rear of the SVG module, and a lock assembly matching the cabinet electric lock on the SVG module is installed in the cabinet. When the SVG module is installed in the cabinet, the NABC four-phase static contact on the rear side of the SVG module is engaged with the NABC four-phase vertical busbar 5. The connection between each SVG module and the power grid is as follows Fig.11 As shown in the figure, since the SVG module is equipped with a grid-connected switch, the grid-connected switch will be closed by the module controller only after the SVG module is started; after the SVG module is shut down, the internal grid-connected switch will be disconnected. When the SVG module is not started or shut down due to a fault, there is no power inside, the grid-connected switch is in the disconnected state, the cabinet electric lock is in the unlocked state, and the SVG module can be pulled out from the working position. When the SVG module is started, the grid-connected switch is closed, and its internal controller closes the cabinet electric lock and locks the position to ensure that the SVG module cannot be pulled out, and then it starts to enter the working state.

[0034] The above-mentioned cabinet electric lock 8 and lock assembly 7 are electronic locks with mechanical lock tongues commonly used in supermarket storage boxes or express delivery cabinets on the market. It can also use a magnetic lock without a mechanical lock tongue.

[0035] As a further limitation of the present invention, an SMC insulating material fixing part 9 is installed on the rear side of each of the partition components 4, and a plug-in hole 91 for plugging in the NABC four-phase vertical busbar 5 is provided on the SMC insulating material fixing part 9. Specifically, the two ends of the SMC insulating material fixing part 9 are respectively connected to the neutral columns on both sides, and the NABC four-phase vertical busbar is inserted into the plug-in hole.

[0036] As a further limitation of the present invention, the cabinet 1 includes a support frame 11 of a frame structure, a front door panel 12 installed on the front side of the support frame 11, a rear door panel 16 installed on the rear side of the support frame 11, a left door panel 18 and a right door panel 14 symmetrically installed on the left and right sides of the support frame 11, a bottom plate installed at the bottom of the support frame 11, and a top plate 13 installed on the top of the support frame, and the front door panel 12 and the rear door panel 16 are both provided with heat dissipation holes 15; the host computer 2 is installed on the front door panel 12. The entire cabinet has a simple structure, low cost, and is easy to put into production and has strong practicality.

[0037] As a further limitation of the present invention, the support frame 11 includes four symmetrically arranged vertical columns 111 and a plurality of horizontal columns 112 located at the upper and lower ends of the vertical columns 111 and connected between any two adjacent vertical columns 111, a plurality of horizontal plates 113 arranged front and back are connected between the front and rear two adjacent vertical columns 111, and a middle column 114 is slidably mounted on the horizontal plates 113 on the left and right sides, and the locking assembly 7 is mounted on the left middle column 114. Among them, the middle column 114 is slidably mounted on the horizontal plate 113, and its position can be adjusted as needed to adapt to SVG modules of different sizes, and has a wider range of uses.

[0038] As a further limitation of the present invention, the top plate is provided with a lifting lug 17. The addition of the lifting lug 17 can facilitate the transportation and movement of the entire generator.

[0039] Considering that the SVG module will generate a certain amount of heat during operation, each of the partition components 4 may include two L-shaped support plates symmetrically arranged on the left and right inner sides of the support frame 11, and the L-shaped support plates can be installed on the support frame 11 so as to be movable up and down. Specifically, the SVG module 3 can be placed on the two L-shaped support plates on the left and right sides, and the SVG module 3 can be further positioned with the help of components such as bolts to prevent it from shaking during transportation and causing damage to the components on the rear side of the SVG module 3; the partition components 4 of this structure only install and fix the SVG module 3 from both sides, and will not hinder the heat dissipation of the SVG module.

[0040] A method for using a static VAR generator with hot-swap and plug-and-play functions, wherein the number of SVG modules 3 is N, and the method for using the static VAR generator comprises the following steps:

[0041] Step S1, the host computer is powered on, and the installation positions of the SVG modules 3 in the cabinet are numbered 0, 1, ..., N-1;

[0042] Step S2, first push the No. 0 SVG module onto the top partition assembly 4, until the NABC four-phase static contact 6 on the rear side of the SVG module 3 is clamped on the NABC four-phase vertical busbar 5, the lock opening of the cabinet electric lock 8 is close to the lock assembly 7, and the communication bus connected to the host computer 2 is connected to the SVG module 3;

[0043] Step S3: The host computer 2 detects that a new SVG module 3 is connected, and automatically changes the communication address of the SVG module 3 to 0;

[0044] Step S4: Push modules 1 to N-1 in order, repeat steps S2 and S3, and the host computer 2 automatically changes the communication address of the corresponding SVG module to 1 to N-1;

[0045] Step S5, as needed, operate the host computer 2 to start the corresponding SVG modules 3 in sequence. The started SVG modules 3 send signals to the cabinet electric lock 8 to control the cabinet electric lock 8 and the lock assembly 7 to lock the position to prevent arcing or overvoltage from occurring when the running SVG module 3 is pulled out.

[0046] When the SVG module 3 needs to be replaced, except for the SVG module 3 that has stopped running due to a fault, the host computer 2 can be operated to stop the operation of the SVG module 3 that needs to be replaced; the SVG module 3 after shutdown releases the position lock; the old SVG module is pulled out and the new SVG module is pushed in; the host computer detects that a new SVG module is connected and automatically changes the communication address of the module to the corresponding position number; the host computer is operated to start the corresponding SVG module, and the SVG module after starting automatically controls the cabinet electric lock and the lock assembly to lock the position to prevent arcing or overvoltage and other dangers when the running module is pulled out.

[0047] When it is necessary to add SVG modules, according to the number M of SVG modules to be added, operate the host computer to reset the total number of modules to N+M, numbered 0, 1, ..., N+M-1; push the new SVG modules in sequence; the host computer detects the access of the new SVG module and automatically changes the communication address of the module to the corresponding position number; operate the host computer to start the corresponding SVG module, and the started SVG module automatically controls the cabinet electric lock and the lock assembly to lock the position to prevent arcing or overvoltage when the running module is pulled out.

[0048] Finally, the SVG module of the present invention is installed in a plug-in manner and arranged in a cabinet. The NABC four-phase static contact installed at the rear of the SVG module can be directly connected with the NABC four-phase vertical busbar when the SVG module is inserted into the partition assembly to achieve connection with the power grid, eliminating the work of cable connection or disassembly, thereby realizing the system live installation or disassembly of the SVG module; the cabinet electric lock on the rear side of the SVG module cooperates with the lock assembly, and under the control of the host computer, it has automatic locking and unlocking functions, which can prevent the SVG module from being pulled out during operation and causing dangers such as arcing or overvoltage; the static VAR generator has an automatic communication networking function, and the SVG module communication address can be automatically allocated and connected, eliminating the tedious setting process when the SVG module is replaced or put into operation; the static VAR generator truly realizes hot-swap and plug-and-play functions.

[0049] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit and essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0050] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A static VAR generator with hot-swap and plug-and-play functions, comprising a cabinet, a host computer installed on the cabinet, and a plurality of SVG modules installed in the cabinet, wherein the host computer is connected to each SVG module via a communication bus; characterized in that: A plurality of partition assemblies for installing SVG modules are arranged in the cabinet, and a vertically arranged NABC four-phase vertical busbar is insulated and installed on the rear side of the partition assembly in the cabinet, and a NABC four-phase static contact that can cooperate with the NABC four-phase vertical busbar is installed on the rear side wall of each SVG module; a cabinet electric lock is installed on the left side wall of each SVG module, and a lock assembly used in conjunction with the cabinet electric lock is installed in the cabinet; The NABC four-phase static contacts and cabinet electric locks on the SVG module are connected to the corresponding SVG module; the NABC four-phase vertical busbar is connected to the power grid through a circuit breaker; When using, Power on the host computer and number the SVG modules in the cabinet according to their installation positions, 0, 1, ..., N-1. First, push the No. 0 SVG module onto the top partition assembly until the NABC four-phase static contact on the rear side of the SVG module is connected to the NABC four-phase vertical busbar, the lock of the cabinet electric lock is close to the lock assembly, and the communication bus connected to the host computer is connected to the SVG module; The host computer detects that a new SVG module has been connected and automatically changes the communication address of the SVG module to 0; Push modules 1 to N-1 in order, and the host computer will automatically change the communication address of the corresponding SVG module to 1 to N-1; According to the needs, operate the host computer to start the corresponding SVG modules in sequence. After starting, the SVG modules send signals to the cabinet electric lock to control the cabinet electric lock and the lock assembly to lock.

2. The static VAR generator with hot-swap and plug-and-play functions according to claim 1, characterized in that: An SMC insulating material fixing piece is installed on the rear side of each of the partition components, and a plug-in hole for plugging in the NABC four-phase vertical busbar is provided on the SMC insulating material fixing piece.

3. The static VAR generator with hot-swap and plug-and-play functions according to claim 1, characterized in that: The cabinet includes a support frame of a frame structure, a front door panel installed on the front side of the support frame, a rear door panel installed on the rear side of the support frame, a left door panel and a right door panel symmetrically installed on the left and right sides of the support frame, a base panel installed on the bottom of the support frame, and a top panel installed on the top of the support frame, and heat dissipation holes are provided on the front door panel and the rear door panel; the host computer is installed on the front door panel.

4. The static VAR generator with hot-swap and plug-and-play functions according to claim 3, characterized in that: The support frame includes four symmetrically arranged vertical columns and a plurality of horizontal columns located at the upper and lower ends of the vertical columns and connected between any two adjacent vertical columns. A plurality of horizontal plates arranged front and back are connected between the front and rear adjacent vertical columns. Center columns can be slidably installed on the horizontal plates on the left and right sides, and the locking assembly is installed on the center column on the left.

5. The static VAR generator with hot-swap and plug-and-play functions according to claim 3, characterized in that: The top plate is provided with lifting ears.

6. The static VAR generator with hot-swap and plug-and-play functions according to claim 1, characterized in that: Each of the partition plate assemblies comprises two L-shaped support plates symmetrically arranged on the left and right inner sides of the support frame, and the L-shaped support plates are mounted on the support frame so as to be movable up and down.

7. A method for using a static VAR generator with hot-swap and plug-and-play functions, characterized in that: The static VAR generator is a static VAR generator with hot-swap and plug-and-play functions as claimed in any one of claims 1 to 6, the number of SVG modules is N, and the method for using the static VAR generator comprises the following steps: Step S1, power on the host computer, and number the SVG modules in the cabinet according to their installation positions, which are numbered 0, 1, ..., N-1; Step S2, first push the No. 0 SVG module onto the top partition assembly until the NABC four-phase static contact on the rear side of the SVG module is clamped on the NABC four-phase vertical busbar, the lock of the cabinet electric lock is close to the lock assembly, and the communication bus connected to the host computer is connected to the SVG module; Step S3: The host computer detects that a new SVG module is connected, and automatically changes the communication address of the SVG module to 0; Step S4: Push modules 1 to N-1 in order, repeat steps S2 and S3, and the host computer automatically changes the communication address of the corresponding SVG module to 1 to N-1; Step S5: operate the host computer as needed to start the corresponding SVG modules in sequence, and the started SVG modules send signals to the cabinet electric lock to control the cabinet electric lock and the lock assembly to lock.

8. The method for using a static VAR generator with hot-swap and plug-and-play functions according to claim 7, characterized in that: When the SVG module needs to be replaced, except for the SVG module that has stopped running due to a fault, the host computer can be operated to stop the SVG module that needs to be replaced; the position lock of the SVG module after shutdown is released; the old SVG module is pulled out and the new SVG module is pushed in; the host computer detects that a new SVG module is connected and automatically changes the communication address of the module to the corresponding position number; the host computer is operated to start the corresponding SVG module, and the SVG module after starting automatically controls the cabinet electric lock and the lock assembly to lock the position.

9. The method for using a static VAR generator with hot-swap and plug-and-play functions according to claim 7, characterized in that: When it is necessary to add SVG modules, according to the number M of SVG modules to be added, operate the host computer to reset the total number of modules to N+M, numbered 0, 1, ..., N+M-1; push the new SVG modules in sequence; the host computer detects the access of the new SVG module and automatically changes the communication address of the module to the corresponding position number; operate the host computer to start the corresponding SVG module, and the started SVG module automatically controls the cabinet electric lock and the lock assembly to lock the position.

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