Multi-scenario adaptive static synchronous compensator power system

Abstract

The application discloses a multi-scene adaptive static synchronous compensator power system, which comprises a modular power valve group and an independent insulation support, wherein the independent insulation support is arranged at the bottom of the modular power valve group; the independent insulation support has a single installation mode and a combined installation mode; in the single installation mode, a single independent insulation support is fixed at the bottom of a single modular power valve group; in the combined installation mode, two adjacent modular power valve groups share one independent insulation support, and the independent insulation support is fixedly connected with the bottoms of the two modular power valve groups, so that the insulation supports of the modular power valve groups form an integral stress structure; and a plurality of modular power valve groups are connected in series to form a power chain. The application can realize flexible expansion of power levels, compact integration of structures, convenient transportation and installation, can quickly adapt to various application scenes such as indoor layout and prefabricated cabins, and can improve engineering applicability and on-site deployment efficiency.

Description

Technical Field

[0001] This invention relates to a synchronous condenser power system, and more particularly to a multi-scene adaptable static synchronous condenser power system. Background Technology

[0002] With the continuous expansion of the scale of new energy grid connection, static synchronous condensers, as the core equipment for dynamic support and voltage stability control of the power grid, are increasingly diversified in their application scenarios. Different scenarios such as indoor power distribution rooms and outdoor prefabricated cabins have put forward higher requirements for the structural compactness, installation flexibility and power scalability of the synchronous condenser power system.

[0003] Existing static synchronous condenser power systems often employ non-standardized power valve groups, which cannot achieve flexible power level adjustments through series expansion, resulting in poor versatility. Furthermore, the internal wiring of these valve groups is complex, leading to low deployment efficiency. In addition, the insulation supports of existing power valve groups are mostly integrated and fixed, offering limited installation flexibility. Increasing the number of series-connected power valve groups requires redesigning the insulation supports, resulting in poor scalability and high costs for modification and maintenance. Summary of the Invention

[0004] Purpose of the invention: The purpose of this invention is to provide a multi-scenario adaptable static synchronous condenser power system that enables flexible expansion of power levels, compact and integrated structure, convenient transportation and installation, and can quickly adapt to various application scenarios such as indoor layout and prefabricated cabins, thereby improving engineering applicability and on-site deployment efficiency.

[0005] Technical Solution: This invention includes a modular power valve assembly and an independent insulating support. The independent insulating support is disposed at the bottom of the modular power valve assembly to achieve electrical insulation between the modular power valve assembly and ground. The independent insulating support has a single installation mode and a combined installation mode: in the single installation mode, a single independent insulating support is fixed to the bottom of a single modular power valve assembly; when multiple modular power valve assemblies are connected in series to form a power chain, a combined installation mode is adopted, that is, two adjacent modular power valve assemblies share the same independent insulating support. The independent insulating support is fixedly connected to the bottom of the two modular power valve assemblies respectively, so that the insulating supports of each modular power valve assembly form an integral load-bearing structure.

[0006] The modular power valve group includes a mounting frame, an H-bridge power unit, an interface box, and a supercapacitor. The H-bridge power unit, the interface box, and the supercapacitor are installed in the mounting frame in a plug-in manner.

[0007] The interface box is an integrated structure of a high-voltage box and a filter unit. Internally, the interface box contains a high-voltage box area and a filter unit area, which are electrically connected. Externally, the interface box has a first interface, a second interface, and a third interface. The first interface is used to connect a supercapacitor, the second interface is used to connect an H-bridge power unit, and the third interface is used to connect external control signals. This integrated design reduces the number of external cables, lowers stray inductance, and improves the system's electromagnetic compatibility performance.

[0008] The modular power valve group has a mounting hole at its bottom, and the independent insulating support is fixedly connected to the modular power valve group through the mounting hole; in the combined installation mode, the independent insulating support is fixedly connected to the mounting holes at the bottom of two adjacent modular power valve groups respectively.

[0009] The modular power valve group adopts either an independent cabinet separate transportation and installation mode or a prefabricated cabin overall integrated transportation and installation mode. In the independent cabinet separate transportation and installation mode, a single modular power valve group is transported to the site as an independent cabinet, and put into use after on-site assembly, wiring, and debugging. In the prefabricated cabin overall integrated transportation and installation mode, multiple modular power valve groups are integrated and assembled at the prefabrication site and then loaded into the prefabricated cabin and transported to the site.

[0010] The prefabricated cabin is equipped with an independent cabin control room and a power room. The power room is equipped with modular power valve groups, power chains, power cables, independent insulation supports, and water-cooled piping systems.

[0011] The prefabricated cabin's bulkhead is equipped with a power cable interface and a water-cooling pipe interface. The power cable interface is used to connect to an external primary cable, and the water-cooling pipe interface is used to connect to an external cooling water source.

[0012] The cabin control room is equipped with switches, sampling boxes, and power distribution equipment.

[0013] The power chain is electrically connected to the outdoor primary power system via power cables.

[0014] A water-cooled piping system is provided in front of the power chain, and the water-cooled piping system is used to dissipate heat from the power chain.

[0015] Beneficial effects: This invention has the following advantages:

[0016] (1) Flexible and convenient power expansion: The modular power valve group adopts a standardized modular architecture, which can be combined in series to form power chains of different power levels. The power level can be flexibly adjusted by increasing or decreasing the number of modules. It has strong versatility and can adapt to different power grid requirements. At the same time, the insulation support structure adopts an independent rather than an integral type. When adding or removing modules, only the independent insulation support needs to be added or removed accordingly. There is no need to redesign the overall structure. The configuration is flexible and the expansion capability is strong, which reduces the cost of modification and operation and maintenance.

[0017] (2) High structural integration and strong stability: The modular power valve group adopts a plug-in installation and integrates H-bridge power unit, interface box and supercapacitor. The interface box adopts a high voltage box and filter unit integrated design, which simplifies external wiring and improves structural compactness. The high current through-wall terminal of H-bridge power unit ensures stable current transmission and further improves the reliability of system operation.

[0018] (3) Strong adaptability to multiple scenarios: It supports two modes: independent cabinet split transportation and prefabricated cabin integrated transportation. It can quickly adapt to various application scenarios such as indoor and prefabricated cabins, greatly shorten the on-site construction cycle and improve the efficiency of project deployment.

[0019] (4) High operational stability: The water-cooled pipeline system installed in front of the power chain can achieve efficient heat dissipation, ensure the temperature stability of the system under long-term high load operation, avoid overheating damage, extend the service life of the equipment, further improve the reliability and practicality of the system operation, and adapt to the needs of high power and long-term operation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the power system structure of the static synchronous condenser of the present invention;

[0021] Figure 2 This is a schematic diagram of the interface box structure of the present invention;

[0022] Figure 3 This is a diagram showing the bottom opening dimensions of the modular power valve assembly of the present invention;

[0023] Figure 4 This is a schematic diagram of the independent insulating support installation mode of the present invention;

[0024] Figure 5 This is a schematic diagram of the independent insulating support assembly installation mode of the present invention;

[0025] Figure 6 This is a schematic diagram of the overall integration mode of the prefabricated cabin of the present invention. Detailed Implementation

[0026] The invention will now be further described with reference to the accompanying drawings.

[0027] like Figure 1 As shown, the multi-scenario adaptable static synchronous condenser power system of this embodiment includes a modular power valve group 100 and an independent insulating support 400. The independent insulating support 400 is disposed at the bottom of the modular power valve group 100 to ensure that the electrical clearance and creepage distance of the modular power valve group 100 to ground meet the electrical insulation requirements.

[0028] Multiple modular power valve groups 100 can be combined in series to form power chains 200 of different power levels. By increasing or decreasing the number of valve groups, different voltage levels can be accommodated, achieving true "building block" flexible configuration. The series-connected power chain 200 is electrically connected to the outdoor primary power system via power cables 300, ensuring coordinated operation between the system and the power grid and ensuring the reliable implementation of functions such as reactive power support and voltage stability control. A water-cooled piping system 500 is installed in front of the power chain 200 to efficiently dissipate heat from the power chain 200, ensuring the temperature stability of the modular power valve groups 100 and the entire power chain 200 under long-term high-load operation, avoiding the impact of overheating on system reliability, and further adapting to high-power, long-term operation application scenarios.

[0029] The modular power valve assembly 100 adopts a standardized modular architecture, including a mounting frame 101, an H-bridge power unit 102, an interface box 103, and a supercapacitor 104. The H-bridge power unit 102, interface box 103, and supercapacitor 104 are installed in a plug-in manner within the mounting frame 101. This installation method not only facilitates the assembly, maintenance, and replacement of each component, but also effectively optimizes the internal space layout of the module, improves structural compactness, and adapts to installation scenarios in confined spaces.

[0030] like Figure 2 As shown, the interface box 103 adopts an integrated design of high-voltage box and filter unit. The interface box 103 internally includes a high-voltage box area 103a and a filter unit area 103b, which are electrically connected via copper busbars. The interface box 103 externally retains only three standard interfaces: the first interface 1031 connects to the supercapacitor 104, the second interface 1032 connects to the high-current through-wall terminal of the H-bridge power unit 102, and the third interface 1033 is used to connect external control signals. This integrated design reduces the number of external cables, lowers stray inductance, and improves the system's electromagnetic compatibility performance.

[0031] The bottom opening of the modular power valve assembly 100 has been designed and calculated, such as... Figure 3As shown, the spacing between the two sets of openings at the bottom of the modular power valve assembly 100 is 140mm, consistent with the spacing of the mounting holes of the independent insulating support 400. Considering the need to maintain a 30mm insulation safety distance between adjacent modular power valve assemblies 100, the distance from the bottom openings to both sides is designed to be 55mm. This ensures that the opening spacing between two adjacent modular power valve assemblies 100 is consistent with the spacing between the two sets of openings at the bottom of the modular power valve assembly 100, and also includes one set of openings with a spacing of 140mm, ensuring that the independent insulating support 400 is compatible with both installation modes. Figure 4 As shown, when a single modular power valve assembly 100 is used independently, it adopts a separate installation mode 401, that is, the four mounting holes of the independent insulating support 400 are fixed to the bottom of a modular power valve assembly 100, ensuring the insulation performance and installation stability of the single module; as shown. Figure 5 As shown, when multiple modular power valve groups 100 are connected in series to form a power chain 200, a combined installation mode 402 is adopted. That is, the independent insulating supports 400 between two modular power valve groups 100 are connected and fixed to the two mounting holes at the bottom of each module, making the independent insulating supports 400 of each module form an integral load-bearing structure. This further improves the overall installation stability and insulation reliability of the power chain 200, adapting to different application scenarios with varying numbers of valves connected in series. When a voltage level upgrade is required, simply adjust the insulating supports at the bottom of the power valve group at the end of the power chain 200 from the individual installation mode to the combined installation mode, and then fix the power valve group at the beginning of the new power chain 200 to the adjusted insulating supports. This allows for rapid expansion without the need to redesign or replace the insulating supports.

[0032] To adapt to different site conditions, this embodiment provides two installation modes:

[0033] In the indoor direct integration mode, each modular power valve assembly 100 has its internal junction box installation and wiring pre-completed at the factory. The modular power valve assembly 100 can be shipped pre-assembled with the bottom independent insulating support 400, or the independent insulating support 400 can be installed on-site first, and the power valve assembly 100 can be placed in the cabinet after arriving on-site. This mode is suitable for existing factory renovations or indoor scenarios with limited space.

[0034] The prefabricated modular design integrates multiple modular power valve groups 100, which are then assembled at the prefabrication site and transported to the site in a prefabricated module 600. Only external cable connections and simple debugging are required for deployment, making it suitable for outdoor sites and scenarios requiring rapid deployment, such as those without dedicated indoor equipment rooms. Figure 6As shown, the prefabricated cabin 600 contains a separate cabin-level control room 601 and a power room 602. Switches, sampling boxes, and power distribution equipment are located in the cabin-level control room 601, while all modular power valve groups 100, power chains 200, power cables 300, independent insulation supports 400, and water-cooled piping systems 500 are located in the power room 602. The prefabricated cabin 600 is equipped with insulation, fireproofing, and corrosion resistance. The cabin body is pre-installed with power cable interfaces 603 and water-cooled piping interfaces 604. After transportation to the site, only hoisting and positioning, connection of external primary cables, external cooling water sources, and grounding grids are required to complete the entire system commissioning in a short time. This model greatly reduces on-site construction and commissioning workload, achieving "plug and play."

Claims

1. A multi-scene adaptable static synchronous camera power system, characterized in that, The system includes a modular power valve assembly (100) and an independent insulating support (400). The independent insulating support (400) is located at the bottom of the modular power valve assembly (100). The independent insulating support (400) has a single installation mode and a combined installation mode: in the single installation mode, a single independent insulating support (400) is fixed to the bottom of a single modular power valve assembly (100); when multiple modular power valve assemblies (100) are connected in series to form a power chain (200), a combined installation mode is adopted, and two adjacent modular power valve assemblies (100) share the same independent insulating support (400). The independent insulating support (400) is fixedly connected to the bottom of the two modular power valve assemblies (100) respectively, so that the insulating supports of each modular power valve assembly (100) form an integral load-bearing structure.

2. The multi-scene adaptable static synchronous adjustment camera power system according to claim 1, characterized in that, The modular power valve group (100) includes a mounting frame (101), an H-bridge power unit (102), an interface box (103), and a supercapacitor (104). The H-bridge power unit (102), the interface box (103), and the supercapacitor (104) are installed in the mounting frame (101) in a plug-in manner.

3. The multi-scene adaptable static synchronous camera power system according to claim 2, characterized in that, The interface box (103) is an integrated structure of high voltage box and filter unit. The interface box (103) has a high voltage box area (103a) and a filter unit area (103b) inside. The high voltage box area (103a) and the filter unit area (103b) are electrically connected. The interface box (103) has a first interface (1031), a second interface (1032) and a third interface (1033) on the outside. The first interface (1031) is used to connect the supercapacitor (104), the second interface (1032) is used to connect the H-bridge power unit (102), and the third interface (1033) is used to connect the external control signal.

4. The multi-scene adaptable static synchronous camera power adjustment system according to claim 1, characterized in that, The modular power valve group (100) has a mounting hole at its bottom, and the independent insulating support (400) is fixedly connected to the modular power valve group (100) through the mounting hole. In the combined installation mode, the independent insulating support (400) is fixedly connected to the mounting holes at the bottom of two adjacent modular power valve groups (100).

5. The multi-scene adaptable static synchronous camera power system according to claim 1, characterized in that, The modular power valve group (100) adopts either an independent cabinet separate transportation and installation mode or a prefabricated cabin integrated transportation and installation mode. In the independent cabinet separate transportation and installation mode, a single modular power valve group (100) is transported to the site as an independent cabinet. In the prefabricated cabin integrated transportation and installation mode, multiple modular power valve groups (100) are integrated and assembled at the prefabrication site and then loaded into the prefabricated cabin (600) and transported to the site.

6. The multi-scene adaptable static synchronous camera power system according to claim 5, characterized in that, The prefabricated cabin (600) is equipped with an independent cabin control room (601) and a power room (602). The power room (602) is equipped with a modular power valve group (100), a power chain (200), a power cable (300), an independent insulation support (400), and a water-cooled pipeline system (500).

7. The multi-scene adaptable static synchronous camera power system according to claim 6, characterized in that, The prefabricated cabin (600) has a power cable interface (603) and a water cooling pipe interface (604) on its bulkhead.

8. The multi-scene adaptable static synchronous camera power system according to claim 6, characterized in that, The cabin control room (601) is equipped with a switch, sampling box, and power distribution equipment.

9. The multi-scene adaptable static synchronous camera power system according to claim 1, characterized in that, The power chain (200) is electrically connected to the outdoor primary power system via a power cable (300).

10. The multi-scene adaptable static synchronous camera power system according to claim 9, characterized in that, A water-cooled piping system (500) is provided in front of the power chain (200).

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