High-voltage SVG adjusting device adaptive to power grid change

Abstract

The utility model discloses a high-voltage SVG (static var generator) adjusting device self-adaptive to power grid change, which comprises an acquisition unit, an FPGA (field programmable gate array) unit, an ARM (advanced RISC machines) unit and a DSP (digital signal processor) unit which are arranged in a cabinet body and are used for self-adaptive adjustment and control of the power grid change, and further comprises adjusting assemblies which are arranged on four mounting guide rails and are used for mounting and adjusting the distance between two adjacent mounting plates, and the adjusting assembly comprises a plurality of adjusting holes formed in the four mounting guide rails, adjusting plates are inserted into the four adjusting holes opposite to the mounting plates correspondingly, mounting cavities are formed in the mounting plates, and through holes are formed in the inner walls of the sides, close to the four mounting guide rails, of the mounting cavities correspondingly. According to the utility model, through mutual cooperation of the acquisition unit, the FPGA unit, the ARM unit and the DSP unit, self-adaptive SVG control is realized, and through arrangement of the adjusting assembly, installation firmness of the installation plate is ensured, and convenience of installation and adjustment of the installation plate is improved.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, specifically to a high-voltage SVG regulating device that adapts to changes in the power grid. Background Technology

[0002] High-voltage SVG (Static Var Generator) can calculate the reactive power in the power grid in real time by monitoring and acquiring the grid voltage and current signals in real time, and by performing rapid signal processing and analysis. Based on the current time period, grid impedance and short-circuit ratio, as well as the control parameters stored under different control modes, the SVG control system can achieve adaptability to the grid strength.

[0003] A high-voltage SVG (Static Var Generator) mainly consists of a cabinet and multiple electrical components housed within it. These components are mounted on mounting plates within the cabinet. To accommodate components of different sizes, the mounting plates are bolted to mounting rails within the cabinet, facilitating adjustment of the spacing between adjacent mounting plates. While this bolted installation ensures the mounting plates are secure, it requires removing all the fixing bolts on the back of the displacement rails before reinstalling them, making the process cumbersome and reducing the ease of installation and adjustment.

[0004] Therefore, there is an urgent need for a high-voltage SVG regulating device that adapts to changes in the power grid to solve the above problems. Utility Model Content

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-voltage SVG regulating device that adapts to changes in the power grid, comprising a data acquisition unit, an FPGA unit, an ARM unit, and a DSP unit disposed within a cabinet for adaptive regulation and control of changes in the power grid. The cabinet is provided with multiple mounting plates for mounting the data acquisition unit, the FPGA unit, the ARM unit, and the DSP unit. The cabinet is connected to two mounting rails on its two inner walls via multiple fixing brackets. The device also includes an adjustment component disposed on four mounting rails for adjusting the spacing between two adjacent mounting plates.

[0006] The adjustment assembly includes multiple adjustment holes formed in four mounting rails. Each of the four adjustment holes, which are opposite to the mounting plate, has an adjustment plate inserted into it. The mounting plate has a mounting cavity. The inner wall of the mounting cavity near the four mounting rails has a through hole. The four through holes are provided with a first guide assembly for guiding the movement of the adjustment plate. The mounting cavity is provided with a drive assembly for driving the four adjustment plates.

[0007] The first guide assembly includes a guide groove formed on the side wall of the adjustment plate, a guide plate slidably connected to the guide groove, and the end of the guide plate away from the bottom wall of the guide groove is connected to the inner wall of the through hole.

[0008] The drive assembly includes two symmetrically arranged drive plates slidably connected to the mounting cavity. Two drive strip plates are respectively hinged to the side of the two drive plates that are far apart from each other. The ends of the two drive strip plates on the same side that are far away from the drive plates are respectively hinged to two opposing adjustment plates. The mounting cavity is provided with a push assembly for pushing the two drive plates.

[0009] The mounting cavity is provided with a second guide assembly for guiding the two drive plates. The second guide assembly includes a guide tube fixedly connected to the inner wall of the mounting cavity opposite to the drive plate. A guide rod is slidably connected to the guide tube, and one end of the guide rod is connected to the drive plate.

[0010] The pushing assembly includes a pushing rod slidably connected to the mounting plate near the cabinet door. One end of the pushing rod, located inside the mounting cavity, is fixedly connected to a pushing plate. Two pushing strip plates are hinged to the end of the pushing plate away from the pushing rod. The ends of the two pushing strip plates away from the pushing plate are respectively hinged to two drive plates. The mounting cavity is provided with a pressing assembly for pressing the pushing plate. A handle is fixedly connected to the end of the pushing rod away from the pushing plate.

[0011] The extrusion assembly includes an extrusion tube fixedly connected to the inner wall of the mounting cavity and the push plate, an extrusion rod slidably connected to the extrusion tube, one end of the extrusion rod being connected to the push plate, and a spring sleeved on the side wall of the extrusion tube, with both ends of the spring being connected to the push plate and the inner wall of the mounting cavity, respectively.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This utility model's adaptive high-voltage SVG regulating device, through the coordinated action of the acquisition unit, FPGA unit, ARM unit, and DSP unit, can automatically control the SVG according to the segment range of the short-circuit ratio, meeting the application scenarios of varying grid strength. This ensures the stability of the SVG grid-connected system and achieves adaptive SVG control. Furthermore, by adjusting the components, the installation spacing between adjacent mounting plates can be adjusted without the need for installing and disassembling multiple bolts, thus ensuring the mounting plate's secure installation while improving the convenience of installation and adjustment. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the cabinet of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the mounting plate after installation of this utility model;

[0017] Figure 4 This is a schematic diagram of the internal structure of the adjustment component of this utility model;

[0018] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0019] In the diagram: 101, cabinet; 102, mounting plate; 103, fixing bracket; 104, mounting rail; 201, through hole; 202, adjusting plate; 203, adjusting hole; 204, mounting cavity; 301, guide groove; 302, guide plate; 401, drive plate; 402, drive strip plate; 501, guide tube; 502, guide rod; 601, push rod; 602, push plate; 603, push strip plate; 604, handle; 701, extrusion tube; 702, extrusion rod; 703, spring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1

[0022] Please see Figures 1-5 The high-voltage SVG regulating device for adaptive power grid changes shown in the figure includes a data acquisition unit, an FPGA unit, an ARM unit, and a DSP unit installed in a cabinet 101 for adaptive regulation and control of power grid changes. The cabinet 101 is provided with multiple mounting plates 102 for mounting the data acquisition unit, FPGA unit, ARM unit, and DSP unit. The cabinet 101 is connected to two mounting rails 104 opposite to the two inner walls by multiple fixing brackets 103. The device also includes an adjustment component installed on the four mounting rails 104 for adjusting the spacing between two adjacent mounting plates 102.

[0023] The adjustment assembly includes multiple adjustment holes 203 formed in four mounting guide rails 104. Each adjustment hole 203 is opposite to the four mounting plates 102, and an adjustment plate 202 is inserted into each of them. The mounting plate 102 has a mounting cavity 204. The inner wall of the mounting cavity 204 near the four mounting guide rails 104 has a through hole 201. The four through holes 201 are provided with a first guide assembly for guiding the movement of the adjustment plate 202. The mounting cavity 204 is provided with a drive assembly for driving the four adjustment plates 202.

[0024] It should be noted that by adjusting the component settings, the installation spacing between two adjacent mounting plates 102 can be adjusted without installing and removing multiple bolts, thanks to the coordinated action of the drive and push components. This ensures the secure installation of the mounting plates 102 while improving the ease of installation and adjustment.

[0025] It is worth noting that the adaptive control of the SVG system to changes in the power grid is existing technology and will not be described in detail here. For the specific working principle, please refer to the publicly available technology, CN219392490U, a power grid SVG control device and system.

[0026] Please see Figure 4 and Figure 5 The first guide component in the figure includes a guide groove 301 formed on the side wall of the adjustment plate 202. The guide groove 301 is slidably connected to the guide plate 302. One end of the guide plate 302 away from the bottom wall of the guide groove 301 is connected to the inner wall of the through hole 201.

[0027] It should be noted here that the first guide component is used to provide guidance and limit the movement of the adjustment plate 202.

[0028] Please see Figure 4 and Figure 5 The driving assembly shown in the figure includes two symmetrically arranged driving plates 401 that are slidably connected to the mounting cavity 204. Two driving strip plates 402 are respectively hinged to the side of the two driving plates 401 that are far apart from each other. The ends of the two driving strip plates 402 located on the same side that are far away from the driving plates 401 are respectively hinged to two opposing adjusting plates 202. The mounting cavity 204 is provided with a pushing assembly for pushing the two driving plates 401.

[0029] It should be noted here that the drive components are configured to enable the two relative adjustment plates 202 to move away from or towards each other.

[0030] Please see Figure 4 and Figure 5The mounting cavity 204 shown in the figure is provided with a second guide assembly for guiding the two drive plates 401. The second guide assembly includes a guide tube 501 fixedly connected to the inner wall of the mounting cavity 204 opposite to the drive plate 401. A guide rod 502 is slidably connected to the guide tube 501. One end of the guide rod 502 is connected to the drive plate 401.

[0031] It should be noted here that the second guide component provides guidance and limiting for the movement of the drive board 401.

[0032] Working principle: When installing and adjusting the mounting plate 102, the pushing component drives the two driving plates 401 to move. During the movement of the two driving plates 401, the two driving strip plates 402 located on the same side will rotate. Then, under the pulling force of the two driving strip plates 402 and the guiding action of the first guiding component, the two adjusting plates 202 opposite to each other will be driven to retract into the mounting cavity 204. After the adjusting plates 202 retract to be flush with the surface of the mounting plate 102, the mounting plate 102 can be placed between the four mounting guide rails 104, and the four adjusting plates 202 on the mounting plate 102 are aligned with the adjusting holes 203 on the four mounting guide rails 104.

[0033] After aligning the four adjusting plates 202 on the mounting plate 102 with the adjusting holes 203 at the mounting height, the two drive plates 401 are pushed away from each other within the mounting cavity 204 by the combined action of the pushing and pressing components. This, in turn, pushes the two drive strip plates 402 on the same side to rotate away from each other. Then, under the pushing force of the two drive strip plates 402 and the guiding action of the first guide component, the two opposing adjusting plates 202 will be pushed into the adjusting holes 203. Finally, the four adjusting plates 202 and the adjusting holes... Under the limiting action of 203, the installation and adjustment of the mounting plate 102 are realized. When installing and adjusting adjacent mounting plates 102, the above operation method can be followed, which will not be elaborated here. Therefore, by adjusting the settings of the components, under the cooperation of the drive component and the push component, the installation distance between two adjacent mounting plates 102 can be adjusted without installing and disassembling multiple bolts. This ensures the firmness of the mounting plate 102 while improving the convenience of the installation and adjustment of the mounting plate 102.

[0034] After installing each mounting plate 102, the electrical components of the acquisition unit, FPGA unit, ARM unit, and DSP unit can be installed on each mounting plate 102. During use, the SVG system uses PWM pulse width modulation control technology to achieve rapid dynamic adjustment of reactive power through power conversion, that is, adjusting the line voltage value and three-phase current value of the SVG grid connection point. The specific control process is as follows: the acquisition unit acquires the line voltage value and three-phase current value of the SVG grid connection point; the ARM unit calculates the short-circuit ratio of the grid SVG control system based on the acquired line voltage value and three-phase current value of the SVG grid connection point (first calculates the impedance based on the line voltage value and three-phase current value of the SVG grid connection point, and then calculates the short-circuit ratio based on the impedance); the ARM unit calculates the short-circuit ratio based on the short-circuit ratio. The data is matched to a preset segmented range. The target SVG control parameter set is determined from multiple SVG control parameter sets. The DSP unit then determines the corresponding SVG control signal based on the target SVG control parameter set. Finally, the FPGA unit and DSP unit control the grid SVG according to the SVG control signal. Through the control method of the combination of FPGA unit, ARM unit and DSP unit, the SVG can be automatically controlled differently according to the segmented range at the short-circuit ratio to meet the application scenarios of varying grid strength, thereby stabilizing the SVG grid-connected system and realizing adaptive SVG control (the adaptive control of the SVG system to grid changes is existing technology and will not be described in detail here. For the specific working principle, please refer to the published technology, CN219392490U, a grid SVG control device and system).

[0035] Example 2

[0036] Please see Figure 4 This embodiment further illustrates Example 1. The push assembly shown in the figure includes a push rod 601 slidably connected to the mounting plate 102 near the cabinet door. One end of the push rod 601 located inside the mounting cavity 204 is fixedly connected to a push plate 602. Two push strip plates 603 are hinged to the end of the push plate 602 away from the push rod 601. The ends of the two push strip plates 603 away from the push plate 602 are respectively hinged to two drive plates 401. The mounting cavity 204 is provided with a pressing assembly for pressing the push plate 602. A handle 604 is fixedly connected to the end of the push rod 601 away from the push plate 602.

[0037] It should be noted that by pushing the component, pulling the handle 604 can move the push plate 602 at one end of the push rod 601. During the movement of the push plate 602, the two push strip plates 603 will rotate, thereby causing the two drive plates 401 to move within the mounting cavity 204.

[0038] Please see Figure 4 The extrusion assembly shown in the figure includes an extrusion tube 701 fixedly connected to the inner wall of the mounting cavity 204 and the push plate 602, an extrusion rod 702 slidably connected to the extrusion tube 701, one end of the extrusion rod 702 being connected to the push plate 602, and a spring 703 sleeved on the side wall of the extrusion tube 701, with both ends of the spring 703 being connected to the push plate 602 and the inner wall of the mounting cavity 204, respectively.

[0039] It should be noted here that the compression component is used to guide and reset the push plate 602, and at the same time, it can maintain the compression of the push plate 602 under the compression and pushing action of the spring 703.

[0040] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A high-voltage SVG regulating device that adapts to changes in the power grid, comprising: The cabinet (101) contains a data acquisition unit, an FPGA unit, an ARM unit, and a DSP unit for adaptive adjustment and control of power grid changes. The cabinet (101) is equipped with multiple mounting plates (102) for mounting the data acquisition unit, the FPGA unit, the ARM unit, and the DSP unit. The cabinet (101) is connected to two mounting rails (104) on its two inner walls by multiple fixing brackets (103). Its characteristic is that it further includes: An adjustment assembly is provided on four mounting rails (104) for adjusting the spacing between two adjacent mounting plates (102); The adjustment assembly includes multiple adjustment holes (203) formed in four mounting guide rails (104). Each of the four adjustment holes (203) opposite to the mounting plate (102) is fitted with an adjustment plate (202). The mounting plate (102) has a mounting cavity (204). The inner wall of the mounting cavity (204) near the four mounting guide rails (104) is provided with a through hole (201). The four through holes (201) are provided with a first guide assembly for guiding the movement of the adjustment plate (202). The mounting cavity (204) is provided with a drive assembly for driving the four adjustment plates (202).

2. The high-voltage SVG regulating device for adaptive power grid changes according to claim 1, characterized in that: The first guide assembly includes a guide groove (301) formed on the side wall of the adjustment plate (202), the guide groove (301) is slidably connected to a guide plate (302), and one end of the guide plate (302) away from the bottom wall of the guide groove (301) is connected to the inner wall of the through hole (201).

3. The high-voltage SVG regulating device for adaptive power grid changes according to claim 2, characterized in that: The drive assembly includes two symmetrically arranged drive plates (401) slidably connected to the mounting cavity (204). Two drive strip plates (402) are respectively hinged to the side of the two drive plates (401) that are far apart from each other. The ends of the two drive strip plates (402) located on the same side that are far away from the drive plates (401) are respectively hinged to two opposing adjustment plates (202). The mounting cavity (204) is provided with a push assembly for pushing the two drive plates (401).

4. The high-voltage SVG regulating device for adaptive power grid changes according to claim 3, characterized in that: The mounting cavity (204) is provided with a second guide assembly for guiding the two drive plates (401). The second guide assembly includes a guide tube (501) fixedly connected to the inner wall of the mounting cavity (204) and the drive plate (401). The guide tube (501) is slidably connected to a guide rod (502), and one end of the guide rod (502) is connected to the drive plate (401).

5. The high-voltage SVG regulating device for adaptive power grid changes according to claim 4, characterized in that: The pushing assembly includes a pushing rod (601) slidably connected to the mounting plate (102) near the cabinet door. One end of the pushing rod (601) located inside the mounting cavity (204) is fixedly connected to a pushing plate (602). Two pushing strip plates (603) are hinged to the end of the pushing plate (602) away from the pushing rod (601). The ends of the two pushing strip plates (603) away from the pushing plate (602) are respectively hinged to two driving plates (401). The mounting cavity (204) is provided with a pressing assembly for pressing the pushing plate (602). A handle (604) is fixedly connected to the end of the pushing rod (601) away from the pushing plate (602).

6. The high-voltage SVG regulating device for adaptive power grid changes according to claim 5, characterized in that: The extrusion assembly includes an extrusion tube (701) fixedly connected to the inner wall of the mounting cavity (204) and the push plate (602). The extrusion tube (701) is slidably connected to an extrusion rod (702). One end of the extrusion rod (702) is connected to the push plate (602). A spring (703) is sleeved on the side wall of the extrusion tube (701). The two ends of the spring (703) are respectively connected to the push plate (602) and the inner wall of the mounting cavity (204).

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