Power grid simulation power supply and power generation system
By splitting the grid analog power supply into multiple boxes and combining it through electrical connections, the problem of transportation difficulties of existing grid analog power supply is solved, and the practicality and reliability of the equipment are improved.
Patent Information
- Application Number
- CN202421383610.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-17
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-06-17
AI Technical Summary
The existing grid simulated power supply is difficult to split and combine during transportation, resulting in transportation difficulties and high costs, and reducing the practicality and reliability of the equipment.
The combined structure of multiple boxes is used to design the grid simulated power supply, including power boxes, bypass boxes and output boxes, and the equipment is split and combined through electrical connections, which facilitates transportation and installation.
Through the box split design, the transportation difficulty and cost of the grid simulated power supply is reduced, the practicality and reliability of the equipment are improved, and the rapid wiring and assembly of the construction site is facilitated.
Smart Images
Figure CN222927974U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of power system testing, and particularly relates to a power grid simulation power supply and a power generation system. Background Art
[0002] In power generation systems such as photovoltaic power stations, energy storage power stations, and wind power generation, a power grid simulation power supply is usually used for pre-grid connection testing and daily maintenance testing of the power generation system. The power grid simulation power supply can simulate various fault conditions that may occur in the power grid, test the ability of the power generation system to cope with power grid faults, so as to adjust and maintain the equipment in the power generation system and ensure the stability and reliability of the power generation system.
[0003] However, in the related art, the body transportation and handling of the existing power grid simulation power supply are relatively difficult, resulting in a large transportation difficulty and transportation cost of the power grid simulation system. Summary of the Utility Model
[0004] The main purpose of the utility model is to propose a power grid simulation power supply and a power generation system, aiming to set the power grid simulation power supply with a combined structure of multiple boxes, reduce the transportation difficulty of the power grid simulation power supply, and improve the practicability and reliability of the power grid simulation power supply.
[0005] To achieve the above object, the power grid simulation power supply proposed by the utility model includes a power box, a bypass box, and an output box. A multi-winding transformer and a power component are arranged in the power box, and the multi-winding transformer is electrically connected to the power component; a switch component is arranged in the bypass box, and the switch component is used to be electrically connected to the power grid and power generation equipment respectively; the output box includes a first box body and a second box body. A single-phase transformer is arranged in the first box body, and an output cabinet and at least two single-phase transformers are arranged in the second box body. The single-phase transformer in the first box body and the at least two single-phase transformers in the second box body are respectively electrically connected to the output cabinet. Wherein, the multi-winding transformer is electrically connected to the switch component, the power component is respectively electrically connected to the three single-phase transformers, and the output cabinet is electrically connected to the switch component.
[0006] In one embodiment, the power component includes a power unit and a reactor. The reactor is electrically connected to the multi-winding transformer, the power unit is electrically connected to the reactor, and is respectively electrically connected to the three single-phase transformers.
[0007] In one embodiment, the switch assembly includes a first terminal, a second terminal, a first switch cabinet, a second switch cabinet, and a bypass switch cabinet. The first terminal is used for electrically connecting to the power grid; the second terminal is used for electrically connecting to a power generation device; the output end of the first switch cabinet is electrically connected to the first terminal and is also electrically connected to the multi-winding transformer; the input end of the second switch cabinet is electrically connected to the output cabinet, and the output end of the second switch cabinet is electrically connected to the second terminal; the input end of the bypass switch cabinet is electrically connected to the input end of the first switch cabinet, and the output end of the bypass switch cabinet is electrically connected to the second terminal.
[0008] In one embodiment, the first switch cabinet is provided with a first adapter. The first adapter is electrically connected to the output end of the first switch cabinet and is also electrically connected to the multi-winding transformer. And / or, the second switch cabinet is provided with a second adapter. The second adapter is electrically connected to the input end of the second switch cabinet and is also electrically connected to the output cabinet.
[0009] In one embodiment, a first current detector is provided in the bypass box. The first current detector is used for detecting the current value flowing through the first terminal. And / or, a second current detector is provided in the bypass box. The second current detector is used for detecting the current value flowing through the input end of the second switch cabinet.
[0010] In one embodiment, a first voltage detector is provided in the power box. The first voltage detector is electrically connected to the multi-winding transformer. And / or, a second voltage detector is provided in the second box body. The second voltage detector is electrically connected to the output cabinet.
[0011] In one embodiment, an auxiliary power transformer is further provided in the bypass box. The auxiliary power transformer is electrically connected to the first terminal.
[0012] In one embodiment, the auxiliary power transformer is provided with a fuse. And / or, a third voltage detector is provided in the bypass box. The third voltage detector is electrically connected to the auxiliary power transformer.
[0013] In one embodiment, an operating space, a storage space, and an office space are provided in the first box body. The single-phase transformer is arranged in the operating space, and the storage space is used for storing materials.
[0014] In one embodiment, the single-phase transformer in the first box body is a first single-phase transformer, and the two single-phase transformers in the second box body are a second single-phase transformer and a third single-phase transformer respectively. A grounding copper bar is further provided in the second box body. The grounding copper bar is electrically connected to the grounding ends of the second single-phase transformer and the third single-phase transformer, and is also electrically connected to the grounding end of the first single-phase transformer.
[0015] In one embodiment, the second box body is provided with adapter terminals, which are electrically connected to the output cabinet and electrically connected to the first single-phase transformer.
[0016] In one embodiment, the power grid simulation power supply further includes a control system, which includes a first control cabinet and a second control cabinet. The first control cabinet is arranged in the power box; the second control cabinet is electrically connected to the first control cabinet, and the second control cabinet is arranged in at least one of the bypass box and the first box body.
[0017] In one embodiment, at least one of the power box, the bypass box, the first box body, and the second box body is provided with a heat dissipation device.
[0018] The present utility model further provides a power generation system, which includes a power generation device and a power grid simulation power supply. The power grid simulation power supply is the above-mentioned power grid simulation power supply, and the power grid simulation power supply is electrically connected to the power generation device.
[0019] The technical solution of the present utility model configures a multi-winding transformer and a power component in the power box, configures a switch component in the bypass box, and configures a single-phase transformer and an output cabinet in the first box body and the second box body of the output box. The equipment components in the power grid simulation power supply can be disassembled and arranged in four box bodies respectively, and the volume and size of the four box bodies can adopt a better miniaturized design, which is convenient for the convenient disassembly and transportation of the power grid simulation power supply; at the same time, the functional equipment groups of the power grid simulation power supply can be respectively arranged in the corresponding box bodies, which is beneficial to more conveniently connect the wires on the construction site to connect the power box, the bypass box and the output box to realize the operation of the power grid simulation power supply, effectively realizing the convenient disassembly and assembly of the power grid simulation power supply, and further improving the practicability and reliability of the power grid simulation power supply. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.
[0021] Figure 1 It is a schematic structural diagram of an embodiment of the power grid simulation power supply provided by the present utility model;
[0022] Figure 2 For Figure 1 the internal structure diagram of an embodiment of the power box of the power grid simulation power supply of
[0023] Figure 3 For Figure 1 Internal structure diagram of an embodiment of a bypass box of a power grid simulation power supply;
[0024] Figure 4 For Figure 1 Internal structure diagram of an embodiment of a first box body of an output box of a power grid simulation power supply;
[0025] Figure 5 For Figure 1 Internal structure diagram of an embodiment of a second box body of an output box of a power grid simulation power supply.
[0026] Explanation of reference numerals in the drawings:
[0027] 100, power grid simulation power supply; 10, power box; 11, multi-winding transformer; 13, power component; 131, power unit; 133, reactor; 15, first voltage detector; 30, bypass box; 31, switch component; 311, first switch cabinet; 3111, first adapter; 313, second switch cabinet; 3131, second adapter; 3133, second current detector; 315, bypass switch cabinet; 33, first terminal; 35, second terminal; 37, auxiliary power transformer; 371, fuse; 373, third voltage detector; 50, output box; 51, first box body; 51a, operating space; 51b, access space; 51c, office space; 511, first single-phase transformer; 53, second box body; 531, second single-phase transformer; 533, third single-phase transformer; 535, output cabinet; 537, transfer terminal; 539, grounding copper bar; 70, control system; 71, first control cabinet; 73, second control cabinet.
[0028] The realization, functional features and advantages of the purpose of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments
[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0030] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.
[0031] In addition, if the descriptions such as "first", "second", etc. are involved in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be construed as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or the solution where A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0032] Most of the existing power grid simulation power supplies have relatively large body sizes and weights. When it is necessary to reach relatively remote areas, areas with harsh and complex road conditions, or sandy and desert areas, etc. to test the power generation system, the transportation and handling of the power grid simulation system are relatively difficult, resulting in relatively large transportation difficulties and transportation costs of the power grid simulation system, and reducing the practicability and reliability of the power grid simulation system. To address the above problems, the present utility model proposes a power grid simulation power supply 100.
[0033] Please refer to Figures 1 to 5 , in an embodiment of the present utility model, the power grid simulation power supply 100 includes a power box 10, a bypass box 30, and an output box 50. A multi-winding transformer 11 and a power component 13 are provided in the power box 10, and the multi-winding transformer 11 is electrically connected to the power component 13; a switch component 31 is provided in the bypass box 30, and the switch component 31 is used to be electrically connected to the power grid and the power generation equipment respectively; the output box 50 includes a first box body 51 and a second box body 53. A single-phase transformer is provided in the first box body 51, and an output cabinet 535 and at least two single-phase transformers are provided in the second box body 53. The single-phase transformer in the first box body 51 and the at least two single-phase transformers in the second box body 53 are electrically connected to the output cabinet 535 respectively. Among them, the multi-winding transformer 11 is electrically connected to the switch component 31, the power component 13 is electrically connected to the three single-phase transformers respectively, and the output cabinet 535 is electrically connected to the switch component 31.
[0034] It can be understood that when power generation equipment such as photovoltaic power stations, energy storage power stations, and wind power generation are assembled and connected to the grid, the grid simulation power supply 100 can be used to connect the power generation equipment and the grid to test whether the power generation equipment can stably adapt when encountering certain grid faults, ensuring that the power generation equipment can operate more stably and reliably. During the test process, the test personnel can adjust and control the grid simulation power supply 100 so that the circuit conditions when certain faults occur in the grid can be simulated in the grid simulation power supply 100. Furthermore, at this time, it can be observed whether equipment components such as inverters, rectifiers, and grid connection boxes in the power generation equipment can operate stably under the working conditions of certain grid faults, which is beneficial to adjusting and improving the power generation equipment according to the test results, enabling the power generation equipment to better handle various working conditions and continuously operate during the operation process, avoiding the impact of the power generation equipment on the grid, and effectively improving the operation performance of the power generation equipment.
[0035] In this application, by splitting the equipment components of the grid simulation power supply 100 and arranging them in the power box 10, bypass box 30, and output box 50, and using cables to achieve electrical connection and conduction between the equipment components to ensure the overall operation of the grid simulation power supply 100, the modular transportation and handling of the grid simulation power supply 100 can be better realized, effectively improving the transportation convenience of the grid simulation power supply 100. At the same time, by reasonably distributing the equipment components in the grid simulation power supply 100, the grid simulation power supply 100 can be more conveniently wired and assembled at the construction site, improving the assembly convenience and practicality of the grid simulation power supply 100.
[0036] Among them, by arranging a switch assembly 31 in the bypass box 30, the cables connecting to the power grid and the cables connecting to the power generation equipment can be respectively installed and connected to the switch assembly 31, and the switch assembly 31 is connected to the multi-winding transformer 11 of the power box 10 through a cable, and is connected to the output cabinet 535 of the second box body 53 through a cable. The switch assembly 31 can be used to control the electrical connection and disconnection between the power grid simulation power supply 100, the power grid and the power generation equipment, ensuring the stable operation of the power grid simulation power supply 100. The multi-winding transformer 11 can be connected to the power component 13 through three-phase high-voltage cables, and then the three-phase circuit is respectively connected to the single-phase transformer of the first box body 51 and the two single-phase transformers of the second box body 53 through the power component 13. Finally, the three single-phase transformers are respectively connected to the output cabinet 535 of the second box body 53 through cables. With the cooperation of equipment such as the multi-winding transformer 11, the power component 13 and the three single-phase transformers, the regulation of performance parameters such as the voltage and frequency of the electric energy can be well realized, ensuring the connection of the whole machine loop of the power grid simulation power supply 100 and realizing the operation of the whole machine of the power grid simulation power supply 100. Therefore, by regulating the power box 10 and the output box 50, the circuit conditions when a certain fault occurs in the power grid can be simulated in the power grid simulation power supply 100, ensuring the stability test of the power grid simulation power supply 100 for the power generation equipment and effectively improving the practicability and reliability of the power grid simulation power supply 100.
[0037] The technical solution of the present utility model arranges a multi-winding transformer 11 and a power component 13 in the power box 10, arranges a switch assembly 31 in the bypass box 30, and arranges a single-phase transformer and an output cabinet 535 in the first box body 51 and the second box body 53 of the output box 50. The equipment components in the power grid simulation power supply 100 can be separately arranged in four box bodies, and the volume and size of the four box bodies can adopt a better miniaturized design, which is convenient for the convenient disassembly and transportation of the power grid simulation power supply 100; at the same time, the functional equipment groups of the power grid simulation power supply 100 can be respectively arranged in the corresponding box bodies, which is beneficial to more conveniently wiring and connecting the power box 10, the bypass box 30 and the output box 50 at the construction site to realize the operation of the power grid simulation power supply 100, effectively realizing the convenient disassembly and assembly of the power grid simulation power supply 100 and further improving the practicability and reliability of the power grid simulation power supply 100.
[0038] Refer to Figure 2 , in the embodiment of the present utility model, the power component 13 includes a power unit 131 and a reactor 133. The reactor 133 is electrically connected to the multi-winding transformer 11, the power unit 131 is electrically connected to the reactor 133, and is respectively electrically connected to the three single-phase transformers.
[0039] In this embodiment, the power component 13 may include a power unit 131 and a reactor 133. At this time, the multi-winding transformer 11 may connect the primary side winding to the switch component 31 in the bypass box 30 through a three-phase cable, and then connect the secondary side winding of the multi-winding transformer 11 to the reactor 133 through a three-phase high-voltage cable. At this time, the number of reactors 133 and power units 131 may be set to three respectively, and the three reactors 133 and the three power units 131 are arranged in one-to-one correspondence. Therefore, the multi-winding transformer 11 may connect the three-phase terminals to the three reactors 133 respectively, so that each phase circuit of the three-phase circuit can be adjusted by the reactor 133 and the power unit 131, and then the power unit 131 connects the three-phase circuits to the three single-phase transformers respectively to achieve stable regulation of electric energy and ensure the stable operation of the power grid simulation power supply 100. Among them, the power box 10 may be connected to the input end of the multi-winding transformer 11 by using a terminal, so that the wiring between the power box 10 and the bypass box 30 can be realized more conveniently through the insertion of the terminal; similarly, it can be connected to the output end of the power unit 131 by using a terminal, so that the wiring between the power box 10 and the output box 50 can be realized more conveniently through the insertion of the terminal, thereby better improving the wiring convenience of the power grid simulation power supply 100.
[0040] Referring to Figure 1 and Figure 3 , in the embodiment of the present utility model, the switch component 31 includes a first terminal 33, a second terminal 35, a first switch cabinet 311, a second switch cabinet 313 and a bypass switch cabinet 315. The first terminal 33 is used for electrically connecting to the power grid; the second terminal 35 is used for electrically connecting to the power generation equipment; the output end of the first switch cabinet 311 is electrically connected to the first terminal 33 and is also electrically connected to the multi-winding transformer 11; the input end of the second switch cabinet 313 is electrically connected to the output cabinet 535, and the output end of the second switch cabinet 313 is electrically connected to the second terminal 35; the input end of the bypass switch cabinet 315 is electrically connected to the input end of the first switch cabinet 311, and the output end of the bypass switch cabinet 315 is electrically connected to the second terminal 35.
[0041] In this embodiment, the first terminal 33 and the second terminal 35 can be wiring terminals provided on the bypass box 30. Cables connecting to the power grid can be plugged and installed on the first terminal 33, and cables connecting to the power generation equipment can be plugged and installed on the second terminal 35, which is conducive to better realizing the convenient wiring of the bypass box 30 with the power grid and the power generation equipment by using the first terminal 33 and the second terminal 35, and further improving the assembly convenience of the power grid simulation power supply 100. By using the first switch cabinet 311 to connect the first terminal 33 and the multi-winding transformer 11, the first switch cabinet 311 can be used to control the on / off of the power generation equipment and the power grid simulation power supply 100; while using the second switch cabinet 313 to connect the second terminal 35 and the output cabinet 535, the second switch can be used to control the on / off of the power grid simulation power supply 100 and the power grid. At this time, by connecting the input end of the first switch cabinet 311 to the input end of the bypass switch cabinet 315, the input ends of the first switch cabinet 311 and the bypass switch cabinet 315 can be integrated in the bypass cabinet by using a copper bar, and by connecting the output end of the bypass switch cabinet 315 to the second terminal 35, the bypass switch function of the power grid simulation power supply 100 can be realized by using the bypass switch cabinet 315, better ensuring the overall structural stability and reliability of the power grid simulation power supply 100.
[0042] Among them, during the daily operation of the power grid simulation power supply 100, the bypass switch cabinet 315 can remain in a normally closed state to ensure the stable connection of the first terminal 33 to the multi-winding transformer 11 through the first switch cabinet 311, and to ensure the stable connection of the second terminal 35 to the output cabinet 535 through the second switch cabinet 313; while when the power grid simulation power supply 100 fails, the first switch cabinet 311 and the second switch cabinet 313 can be disconnected, and the bypass switch cabinet 315 can be closed, which is conducive to using the bypass switch cabinet 315 to play a bypass connection role at this time, preventing the failure of the power grid simulation power supply 100 from affecting the power generation equipment and the power grid, and further improving the stable and reliable operation of the power grid simulation power supply 100.
[0043] In the embodiment of the present utility model, the first switch cabinet 311 is provided with a first adapter 3111, and the first adapter 3111 is electrically connected to the output end of the first switch cabinet 311 and is also electrically connected to the multi-winding transformer 11. And / or, the second switch cabinet 313 is provided with a second adapter 3131, and the second adapter 3131 is electrically connected to the input end of the second switch cabinet 313 and is also electrically connected to the output cabinet 535.
[0044] In some embodiments, a first adapter 3111 may be provided in the first switch cabinet 311. The first adapter 3111 may be installed on the wall of the bypass box 30. The first adapter 3111 may be a terminal block. By using a cable to connect the first adapter 3111 and the output terminal of the first switch cabinet 311 within the bypass box 30, the cable connecting the multi-winding transformer 11 can be plugged into the first adapter 3111 to achieve the cable connection between the bypass box 30 and the power box 10, which is beneficial to better achieve the convenient wiring between the bypass box 30 and the power box 10, and further improve the assembly convenience and practicality of the power grid simulation power supply 100.
[0045] In other embodiments, a second adapter 3131 may be provided in the second switch cabinet 313. The second adapter 3131 may be installed on the wall of the bypass box 30. The second adapter 3131 may be a terminal block. By using a cable to connect the second adapter 3131 and the input terminal of the second switch cabinet 313 within the bypass box 30, the cable connecting the output cabinet 535 can be plugged into the second adapter 3131 to achieve the cable connection between the bypass box 30 and the output box 50, which is beneficial to better achieve the convenient wiring between the bypass box 30 and the output box 50, and further improve the assembly convenience and practicality of the power grid simulation power supply 100.
[0046] Referring to Figure 3 , in other embodiments, the power grid simulation power supply 100 may be provided with a first adapter 3111 in the first switch cabinet 311 and a second adapter 3131 in the second switch cabinet 313. The first adapter 3111 and the second adapter 3131 may be terminal blocks respectively installed on the wall of the bypass box 30. Then, when assembling the power grid simulation power supply 100, the connecting wire cable of the power box 10 can be plugged into the first adapter 3111 of the bypass box 30, and the connecting wire cable of the output box 50 can be plugged into the second adapter 3131 of the bypass box 30. Then, the quick wiring installation between the bypass box 30 and the power box 10 and the output box 50 can be achieved by plugging the cables, further improving the assembly convenience and practicality of the power grid simulation power supply 100.
[0047] In the embodiments of the present utility model, a first current detector is provided in the bypass box 30, and the first current detector is used to detect the current value flowing through the first terminal 33. And / or, a second current detector 3133 is provided in the bypass box 30, and the second current detector 3133 is used to detect the current value flowing through the input terminal of the second switch cabinet 313.
[0048] In some embodiments, the first current detector may be disposed at the wire passing hole of the bypass box 30 through which the cable connecting to the power grid passes. The high-voltage cable connecting the first terminal 33 may pass through the first current detector, and the first current detector and the control system may be connected by a low-voltage cable. The first current detector may be used to detect and obtain the current information flowing from the power grid through the first terminal, and the detected current value may be transmitted to the control system of the power grid simulation power supply 100, so that the power grid simulation power supply 100 can perform corresponding regulation according to the detected current information, ensuring the stable operation of the power grid simulation power supply 100, and further improving the structural stability and reliability of the power grid simulation power supply 100.
[0049] Referring to Figure 3 , in some other embodiments, the second switch cabinet 313 may be provided with a terminal pair at the input end for wiring the cable connecting to the output cabinet 535, so as to better improve the assembly convenience of the power grid simulation power supply 100. At this time, the high-voltage cable connecting the terminal may pass through the second current detector 3133, and the second current detector 3133 and the control system may be connected by a low-voltage cable, which is beneficial to better use the second current detector 3133 to detect the current information of the output current flowing between the output cabinet 535 and the second switch cabinet 313, and transmit the detected current value to the control system of the power grid simulation power supply 100, which is beneficial to understanding the current condition in the output box 50 according to the current information, better ensuring the stable operation of the power grid simulation power supply 100, and further improving the practicability and reliability of the power grid simulation power supply 100.
[0050] In other embodiments, the power grid simulation power supply 100 may be provided with a first current detector and a second current detector 3133 in the bypass box 30, so that the high-voltage cable connecting the first terminal 33 passes through the first current detector, and the high-voltage cable connecting the input end of the second switch cabinet 313 passes through the second current detector 3133. The first current detector may be used to detect the current information flowing from the power grid through the first terminal 33, and the second current detector 3133 may be used to detect the current information of the output current flowing between the output cabinet 535 and the second switch cabinet 313. By connecting the first current detector and the second current detector 3133 to the control system through a low-voltage cable to transmit the detected current value, the operating conditions of the power grid and the output box can be understood in real time from the detection results, so that the power grid simulation power supply 100 can perform corresponding regulation on the whole machine according to the detected current information, ensuring the stable operation of the power grid simulation power supply 100, and further improving the structural stability and reliability of the power grid simulation power supply 100.
[0051] In an embodiment of the present utility model, a first voltage detector 15 is provided inside the power box 10, and the first voltage detector 15 is electrically connected to the multi-winding transformer 11. And / or, a second voltage detector is provided inside the second box body 53, and the second voltage detector is electrically connected to the output cabinet 535.
[0052] In some embodiments, by providing the first voltage detector 15 inside the power box 10, the first voltage detector 15 can be electrically connected to the input end of the multi-winding transformer 11. Furthermore, the first voltage detector 15 can be used to detect the input voltage transmitted to the multi-winding transformer 11 through the first switch cabinet 311, which is beneficial to feedback the operating state of the power grid simulation power supply 100 according to the detected voltage information, realize real-time monitoring of the power grid simulation power supply 100, ensure the stable operation of the power grid simulation power supply 100, and further improve the practicability and reliability of the power grid simulation power supply 100.
[0053] In other embodiments, by providing the second voltage detector inside the second box body 53, the second voltage detector can be electrically connected to the output cable of the output cabinet 535 to realize voltage detection of the electric energy output by the output cabinet 535. Furthermore, the operating state of the power grid simulation power supply 100 can be feedback according to the voltage information detected by the second voltage detector, realize real-time monitoring of the power grid simulation power supply 100, ensure the stable operation of the power grid simulation power supply 100, and further improve the practicability and reliability of the power grid simulation power supply 100.
[0054] Refer to Figure 1 、 Figure 2 and Figure 5 In other embodiments, the power grid simulation power supply can be provided with the first voltage detector 15 inside the power box 10 and the second voltage detector inside the second box body 53. The first voltage detector 15 can be used to detect the input voltage transmitted to the multi-winding transformer 11 through the first switch cabinet 311, and the second voltage detector can be electrically connected to the output cable of the output cabinet 535. Furthermore, the operating conditions of the power box 10 and the output cabinet 535 can be monitored in real time according to the detection results of the first voltage detector 15 and the second voltage detector, so that the power grid simulation power supply 100 can timely adjust the operating performance of the whole machine, ensure the stable operation of the power grid simulation power supply 100, and further improve the practicability and reliability of the power grid simulation power supply 100.
[0055] Refer to Figure 1 and Figure 3 In an embodiment of the present utility model, an auxiliary power transformer 37 is further provided inside the bypass box 30, and the auxiliary power transformer 37 is electrically connected to the first terminal 33.
[0056] In this embodiment, by arranging an auxiliary power transformer 37 in the bypass box 30, the auxiliary power transformer 37 can supply power to devices such as the electric lamp and the heat dissipation system of the grid simulation power supply 100, so that testers can operate the grid simulation power supply 100 more conveniently for test experiments. By electrically connecting the auxiliary power transformer 37 to the first terminal 33, the electric energy of the grid can be voltage-regulated through the auxiliary power transformer 37, so that the auxiliary power transformer 37 can supply commercial power to the auxiliary devices in the grid simulation power supply 100, ensuring the stable operation of the grid simulation power supply 100 and further improving the practicability and reliability of the grid simulation power supply 100.
[0057] In an embodiment of the present utility model, the auxiliary power transformer 37 is provided with a fuse 371. And / or, a third voltage detector 373 is arranged in the bypass box 30, and the third voltage detector 373 is electrically connected to the auxiliary power transformer 37.
[0058] In some embodiments, the fuse 371 can be integrally arranged in the auxiliary power transformer 37. Under the action of the fuse 371, when the electric energy input to the auxiliary power transformer 37 is too large, the wiring of the auxiliary power transformer 37 can be disconnected, which is beneficial to better avoiding the overload and burning of the auxiliary power transformer 37, realizing the circuit protection function for the auxiliary devices in the grid simulation power supply 100, and further improving the practicability and reliability of the grid simulation power supply 100.
[0059] In other embodiments, by arranging a third voltage detector 373 in the bypass box 30, the third voltage detector 373 can be connected to the input end of the auxiliary power transformer 37, so that the third voltage detector 373 can detect the electric energy voltage input from the grid to the first terminal 33, enabling the grid simulation power supply 100 to perform corresponding regulation according to the voltage information detected by the third voltage detector 373, ensuring the stable operation of the grid simulation power supply 100, reducing the influence of the grid on the grid simulation power supply 100, and further improving the practicability and reliability of the grid simulation power supply 100.
[0060] Refer to Figure 3, in other embodiments, the grid simulation power supply 100 can integrally install the fuse 371 in the auxiliary power transformer 37, and a third voltage detector 373 is arranged in the bypass box 30 to connect to the input end of the auxiliary power transformer 37, which is beneficial to using the third voltage detector 373 to detect in real time the power voltage input from the grid to the first terminal 33, and performing corresponding regulation on the grid simulation power supply 100 according to the voltage information detected by the third voltage detector 373 to ensure a reliable electrical connection between the grid simulation power supply 100 and the grid; at the same time, when the power voltage input from the grid is too large, the fuse 371 can be used to disconnect the wiring of the auxiliary power transformer 37, which is beneficial to better avoiding the overload and burning of the auxiliary power transformer 37 and realizing the circuit protection function of the auxiliary equipment in the grid simulation power supply 100. Furthermore, the stable and reliable operation of the grid simulation power supply 100 can be better realized under the action of the fuse and the third voltage detector 373, reducing the influence of the grid on the grid simulation power supply 100, and further improving the practicability and reliability of the grid simulation power supply 100.
[0061] Referring to Figure 4 , in the embodiment of the present utility model, an operation space 51a, a storage space 51b and an office space 51c are provided in the first box body 51, and the single-phase transformer is arranged in the operation space 51a, and the storage space 51b is used for storing materials.
[0062] In this embodiment, the operation space 51a, the storage space 51b and the office space 51c can be formed by partitioning the first box body 51 with a partition board. At this time, the equipment maintenance and replacement materials of the grid simulation power supply 100 can be stored in the storage space 51b, so as to more conveniently perform maintenance and repair on the grid simulation power supply 100 and improve the operation convenience and practicability of the grid simulation power supply 100. And in the office space 51c, a control console of the grid simulation power supply 100 can be set, so that the test personnel can more comfortably control the grid simulation power supply 100 to perform tests in the office space 51c, and can monitor the operation state of the grid simulation power supply 100 in real time in the office space 51c to ensure the stable operation of the grid simulation power supply 100 and further improve the practicability and reliability of the grid simulation power supply 100.
[0063] Referring to Figure 1 、 Figure 4 and Figure 5 , in the embodiment of the present utility model, the single-phase transformer in the first box body 51 is the first single-phase transformer 511, and the two single-phase transformers in the second box body 53 are the second single-phase transformer 531 and the third single-phase transformer 533 respectively. A grounding copper bar 539 is further arranged in the second box body 53, and the grounding copper bar 539 is electrically connected to the grounding ends of the second single-phase transformer 531 and the third single-phase transformer 533, and is electrically connected to the grounding end of the first single-phase transformer 511.
[0064] In this embodiment, the power components in the power box 10 can respectively connect the three cables connecting the three-phase circuit to the input ends of the first single-phase transformer 511, the input end of the second single-phase transformer 531, and the input end of the third single-phase transformer 533. At this time, a copper bar can be provided in the second box body 53 to connect the neutral ends of the second single-phase transformer 531 and the third single-phase transformer 533. The cable connecting the neutral end of the power components can be connected to this copper bar, and the neutral end of the first single-phase transformer 511 in the first box body 51 can be connected to this copper bar in the second box body 53 through a cable, so as to stably realize the wiring between the power components and the three single-phase transformers and ensure the stable operation of the power grid simulation power supply 100.
[0065] Among them, a grounding copper bar 539 can also be provided in the second box body 53. By connecting the grounding copper bar 539 to the grounding wires of the second single-phase transformer 531 and the third single-phase transformer 533, the grounding copper bar 539 can be connected to the grounding terminal of the second box body 53 to realize the grounding protection of the second single-phase transformer 531 and the third single-phase transformer 533. At this time, the grounding wire of the first single-phase transformer 511 can be connected to the grounding copper bar 539 of the second box body 53 to realize the overall grounding of the output box 50, ensure the stable operation of the three single-phase transformers, and further improve the overall stability and reliability of the power grid simulation power supply 100.
[0066] Refer to Figure 1 and Figure 5 , in the embodiment of the present utility model, the second box body 53 is provided with a transfer terminal 537. The transfer terminal 537 is electrically connected to the output cabinet 535 and is also electrically connected to the first single-phase transformer 511.
[0067] In this embodiment, the transfer terminal 537 can be a wiring terminal installed on the box wall of the second box body 53. By connecting the transfer terminal 537 and the output cabinet 535 with cables in the second box body 53, the cable connecting the first single-phase transformer 511 on the first box body 51 can be inserted into the transfer terminal 537 to realize the electrical connection between the first single-phase transformer 511 and the output cabinet 535, which is beneficial to better realize the convenient wiring between the first box body 51 and the second box body 53, and further improve the assembly convenience and practicality of the power grid simulation power supply 100.
[0068] Refer to Figure 1 , Figure 2 and Figure 4, in an embodiment of the present utility model, the power grid simulation power supply 100 further includes a control system 70. The control system 70 includes a first control cabinet 71 and a second control cabinet 73. The first control cabinet 71 is disposed in the power box 10; the second control cabinet 73 is electrically connected to the first control cabinet 71, and the second control cabinet 73 is provided in at least one of the bypass box 30 and the first box body 51.
[0069] In this embodiment, the first control cabinet 71 can be the main control cabinet of the control system 70. The whole machine equipment of the power grid simulation power supply 100 can be regulated on the first control cabinet 71. At this time, the second control cabinet 73 can be arranged in at least one of the bypass box 30 and the first box body 51. The second control cabinet 73 is used to connect the devices for monitoring each device in the bypass box 30 and the output box 50, and the second control cabinet 73 is connected to the first control cabinet 71 through a communication cable or a wireless signal. Furthermore, all the devices in the power grid simulation power supply 100 can be monitored in real time on the first control cabinet 71, which is beneficial to better obtain the fault information on the power grid simulation power supply 100 in real time, ensure the stable operation of the power grid simulation power supply 100, and further improve the practicability and reliability of the power grid simulation power supply 100.
[0070] Among them, the power grid simulation power supply 100 can only set the second control cabinet 73 in the bypass box, so that the second control cabinet 73 connects the monitoring device in the bypass box 30 and uses an external cable to connect the monitoring device in the output box 50; or, the second control cabinet 73 can be only arranged in the first box body 51, so that the second control cabinet 73 connects the monitoring device in the first box body 51 and uses an external cable to connect the monitoring device in the bypass box 30; or, the second control cabinet 73 can be arranged in both the bypass box 30 and the first box body 51, so that the two second control cabinets 73 respectively connect the corresponding monitoring devices in the bypass box 30 and the first box body 51, and the two second control cabinets 73 are respectively electrically connected to the first control cabinet 71 to realize the stable control of the whole machine of the power grid simulation power supply 100.
[0071] In an embodiment of the present utility model, at least one of the power box 10, the bypass box 30, the first box body 51, and the second box body 53 is provided with a heat dissipation device.
[0072] In this embodiment, the power grid simulation power supply 100 can be provided with an air-cooled heat dissipation device or a water-cooled heat dissipation device in the bypass box 30, etc., which is beneficial to better take away the heat generated by the operation of the devices in the power box 10 by the heat dissipation device, avoid the devices in the power box 10 from operating at a relatively high temperature and having a certain probability of failure, and further can better ensure the stable operation of the power grid simulation power supply 100, and further improve the practicability and reliability of the power grid simulation power supply 100.
[0073] Similarly, a heat dissipation device or a water-cooled heat dissipation device can be provided in one or more of the bypass box 30, the first box body 51, and the second box body 53, so as to better achieve the heat dissipation of the devices in the power grid simulation power supply 100 under the action of the heat dissipation device, reduce the high-temperature influence on the power grid simulation power supply 100 during operation, ensure the stable operation of the power grid simulation power supply 100, and further improve the practicability and reliability of the power grid simulation power supply 100.
[0074] The present utility model further provides a power generation system, which includes a power generation device and the power grid simulation power supply 100. The specific structure of the power grid simulation power supply 100 refers to the above embodiments. Since this power generation system adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one.
[0075] The above is only an exemplary embodiment of the present utility model, and does not limit the patent scope of the present utility model. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or direct / indirect application in other related technical fields is included in the patent protection scope of the present utility model.
Claims
1. A power grid simulation power supply, characterized in that: include: A power box, wherein a multi-winding transformer and a power component are arranged in the power box, and the multi-winding transformer is electrically connected to the power component; A bypass box, wherein a switch assembly is provided in the bypass box, and the switch assembly is used to be electrically connected to the power grid and the power generation equipment respectively; and An output box, the output box comprising a first box body and a second box body, the first box body is provided with a single-phase transformer, the second box body is provided with an output cabinet and at least two single-phase transformers, the single-phase transformer of the first box body and the at least two single-phase transformers of the second box body are electrically connected to the output cabinet respectively; The multi-winding transformer is electrically connected to the switch assembly, the power assembly is electrically connected to the three single-phase transformers respectively, and the output cabinet is electrically connected to the switch assembly.
2. The grid simulation power supply according to claim 1, characterized in that: The power assembly includes a power unit and a reactor. The reactor is electrically connected to the multi-winding transformer. The power unit is electrically connected to the reactor and is electrically connected to the three single-phase transformers respectively.
3. The grid simulation power supply according to claim 1, characterized in that: The switch assembly comprises: A first terminal, the first terminal being used to be electrically connected to a power grid; A second terminal, the second terminal is used to be electrically connected to a power generation device; a first switch cabinet, wherein an output end of the first switch cabinet is electrically connected to the first terminal and to the multi-winding transformer; a second switch cabinet, wherein an input end of the second switch cabinet is electrically connected to the output cabinet, and an output end of the second switch cabinet is electrically connected to the second terminal; A bypass switch cabinet, wherein the input end of the bypass switch cabinet is electrically connected to the input end of the first switch cabinet, and the output end of the bypass switch cabinet is electrically connected to the second terminal.
4. The grid simulation power supply according to claim 3, characterized in that: The first switch cabinet is provided with a first adapter, the first adapter is electrically connected to the output end of the first switch cabinet and is electrically connected to the multi-winding transformer; And / or, the second switch cabinet is provided with a second adapter, and the second adapter is electrically connected to the input end of the second switch cabinet and electrically connected to the output cabinet.
5. The grid simulation power supply according to claim 3, characterized in that: The bypass box is provided with a first current detector, and the first current detector is used to detect the current value flowing through the first terminal; And / or, a second current detector is provided in the bypass box, and the second current detector is used to detect the current value flowing through the input end of the second switch cabinet.
6. The grid simulation power supply according to claim 1, characterized in that: A first voltage detector is provided in the power box, and the first voltage detector is electrically connected to the multi-winding transformer; And / or, a second voltage detector is provided in the second box, and the second voltage detector is electrically connected to the output cabinet.
7. The grid simulation power supply according to claim 3, characterized in that: An auxiliary power transformer is also provided in the bypass box, and the auxiliary power transformer is electrically connected to the first terminal.
8. The grid simulation power supply according to claim 7, characterized in that: The auxiliary power transformer is provided with a fuse; And / or, a third voltage detector is provided in the bypass box, and the third voltage detector is electrically connected to the auxiliary power transformer.
9. The grid simulation power supply according to any one of claims 1 to 6, characterized in that: The first box body is provided with an operating space, an access space and an office space. The single-phase transformer is arranged in the operating space. The access space is used for storing materials.
10. The grid simulation power supply according to any one of claims 1 to 6, characterized in that: The single-phase transformer in the first box is a first single-phase transformer, and the two single-phase transformers in the second box are a second single-phase transformer and a third single-phase transformer; A grounding copper bar is also provided in the second box, and the grounding copper bar is electrically connected to the grounding end of the second single-phase transformer and the grounding end of the third single-phase transformer, and is also electrically connected to the grounding end of the first single-phase transformer.
11. The grid simulation power supply according to claim 10, characterized in that: The second box is provided with a transfer terminal, and the transfer terminal is electrically connected to the output cabinet and to the first single-phase transformer.
12. The grid simulation power supply according to any one of claims 1 to 6, characterized in that: The grid simulation power supply also includes a control system, and the control system includes: A first control cabinet, wherein the first control cabinet is arranged in the power box; A second control cabinet is electrically connected to the first control cabinet, and at least one of the bypass box and the first box body is provided with the second control cabinet.
13. The grid simulation power supply according to any one of claims 1 to 6, characterized in that: At least one of the power box, the bypass box, the first box body, and the second box body is provided with a heat dissipation device.
14. A power generation system, characterized in that: The power generation system includes a power generation device and a power grid simulation power supply, wherein the power grid simulation power supply is the power grid simulation power supply as described in any one of claims 1 to 13, and the power grid simulation power supply is electrically connected to the power generation device.