Power grid simulation power supply
By integrating the bypass switch assembly and input switch assembly into the combined switch cabinet in the grid analog power supply, the transportation and handling costs caused by the increase in the number of boxes of the existing grid analog power supply is solved, achieving more efficient transportation and reducing costs.
Patent Information
- Application Number
- CN202323549247.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-25
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2033-12-25
AI Technical Summary
The existing grid analog power supply has been designed separately in one container, resulting in an increase in the number of containers, which in turn increases transportation and handling costs.
A grid analog power supply is designed in which the bypass switch assembly and the input switch assembly are integrated into the combined switch cabinet without the need to set up a function box separately, thereby reducing the number of boxes of the overall equipment.
By reducing the number of functional boxes, the transportation and handling costs of the simulated power supply of the power grid are reduced, and the transportation efficiency of the equipment is improved.
Smart Images
Figure CN222546975U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of power supply, in particular to a power grid simulation power supply. Background Art
[0002] In recent years, with the rapid development of photovoltaic, energy storage, and wind power generation industries, the adaptability requirements of power generation equipment to the power grid are gradually increasing. The power grid simulation power supply is a test device used in photovoltaic, energy storage, wind power generation and other fields to meet the grid adaptability, fault ride-through and other tests.
[0003] The existing grid simulation power supply designs the bypass function separately in a container, which increases the number of containers and thus increases the transportation cost and handling time. Utility Model Content
[0004] The utility model provides a power grid simulation power supply, which reduces the number of boxes required for the overall equipment, thereby facilitating the reduction of transportation and handling costs.
[0005] An embodiment of the utility model provides a power grid simulation power supply, which includes: a first functional box, including a switch cabinet room, a first transformer room and a power unit room, the switch cabinet room includes an input terminal, an output terminal, and a combined switch cabinet, the combined switch cabinet includes an input switch assembly and a bypass switch assembly, the first transformer room includes a first transformer assembly, the input switch assembly is electrically connected between the input terminal and the first transformer assembly, the bypass switch assembly is electrically connected to the input terminal and the output terminal, and the bypass switch assembly conducts the input terminal with the output terminal in a closed state, the power unit room includes a power unit assembly and a reactor assembly, the first transformer assembly, the reactor assembly, and the power unit assembly are electrically connected in sequence; a second functional box includes an output switch cabinet and a second transformer assembly, the second transformer assembly is electrically connected to the power unit assembly, and the output switch cabinet is electrically connected to the output terminal.
[0006] According to the aforementioned embodiment of the utility model, the switch cabinet room further includes: a first voltage detection device electrically connected to the input terminal; a first current detection device built into the combination switch cabinet, and the first current detection device electrically connected to the input terminal.
[0007] According to any of the aforementioned embodiments of the utility model, the switch cabinet room also includes: an auxiliary power transformer, which is electrically connected to the input terminal, and the output end of the auxiliary power transformer is electrically connected to the electrical equipment in the power grid simulation power supply to supply power to the electrical equipment in the power grid simulation power supply; a fuse, which is connected in series between the input terminal and the input end of the auxiliary power transformer.
[0008] According to any of the aforementioned embodiments of the present utility model, the first transformer chamber further comprises: a second voltage detection device electrically connected to the first transformer assembly; and a heat dissipation device for dissipating heat inside the first transformer chamber.
[0009] According to any of the foregoing embodiments of the utility model, the first transformer chamber also includes a first transfer terminal, the first transformer assembly, the reactor assembly, the power unit assembly, and the first transfer terminal are electrically connected in sequence, and the first transfer terminal is used to be electrically connected to the second transformer assembly; the second transformer chamber also includes a second transfer terminal, the second transfer terminal is electrically connected to the second transformer assembly, and the second transfer terminal is used to be electrically connected to the first transfer terminal.
[0010] According to any of the aforementioned embodiments of the present utility model, the first functional box also includes a control room, and the switch cabinet room, the first transformer room, the power unit room, and the control room are arranged in sequence.
[0011] According to any of the aforementioned embodiments of the utility model, the control room includes a control cabinet, and the control cabinet includes a control module and a communication module. The control module is used to control multiple devices of the power grid simulation power supply, and the communication module is used to communicate with external equipment.
[0012] According to any of the aforementioned embodiments of the utility model, the second functional box also includes an output switch cabinet room, a second transformer room and an output room, the output switch cabinet is arranged in the output switch cabinet room, the second transformer assembly is arranged in the second transformer room, and the second transformer room, the output room and the output switch cabinet room are arranged in sequence.
[0013] According to any of the aforementioned embodiments of the present utility model, the output room includes an output cabinet, and the output cabinet is electrically connected between the second transformer assembly and the output switch cabinet.
[0014] According to any of the foregoing embodiments of the present utility model, the output room further includes: a third voltage detection device and a third current detection device, which are integrated in the output cabinet, and the third voltage detection device and the third current detection device are electrically connected to the output terminal via the output switch cabinet, respectively.
[0015] According to the power grid simulation power supply of the embodiment of the utility model, the switch cabinet room of the first function box has a combination switch cabinet, wherein the combination switch cabinet includes an input switch assembly and a bypass switch assembly, the bypass switch assembly is electrically connected to the input terminal and the output terminal, and the bypass switch assembly conducts the input terminal with the output terminal in a closed state. The power grid simulation power supply of the above-mentioned embodiment of the utility model has a bypass function, and the bypass switch assembly and the input switch assembly are integrated in the combination switch cabinet, and there is no need to set a separate function box for the bypass switch assembly, which reduces the number of function boxes of the power grid simulation power supply, thereby reducing the transportation and transmission costs of the power grid simulation power supply during transportation and transmission. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0017] Figure 1 It is a schematic diagram of the top view of the structure of an embodiment of the power grid simulation power supply of the utility model;
[0018] Figure 2 It is a three-dimensional structural diagram of a first functional box from one perspective in an embodiment of a power grid simulation power supply of the utility model;
[0019] Figure 3 It is a three-dimensional structural diagram of another perspective of the first functional box in an embodiment of the power grid simulation power supply of the utility model;
[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the second function box in an embodiment of the power grid simulation power supply of the utility model.
[0021] Description of reference numerals:
[0022] 100-first function box;
[0023] 110- switch cabinet room; 111- input terminal; 112- output terminal; 113- combination switch cabinet; 114- first voltage detection device; 115- auxiliary power transformer; 116- fuse;
[0024] 120 - first transformer chamber; 121 - first transformer assembly; 122 - second voltage detection device; 123 - heat dissipation device; 124 - first transfer terminal;
[0025] 130-power unit room; 131-power unit assembly; 132-reactor assembly;
[0026] 140-control room; 141-control cabinet;
[0027] 200-second function box;
[0028] 210- output switch cabinet room; 211- output switch cabinet;
[0029] 220 - second transformer chamber; 221 - second transformer assembly; 222 - second transfer terminal;
[0030] 230- output room; 231- output cabinet;
[0031] 910 - first high-voltage cable; 920 - second high-voltage cable.
[0032] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with the embodiments with reference to the accompanying drawings. DETAILED DESCRIPTION
[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0034] It should be noted that all directional indications such as up, down, left, right, front, back... in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.
[0035] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0036] An embodiment of the utility model provides a power grid simulation power supply. Figure 1 The schematic diagram is a top view of an embodiment of a power grid simulation power supply of the utility model. The power grid simulation power supply comprises a first function box 100 and a second function box 200. Figure 1In the figure, part of the top box structure of the first function box and the second function box is hidden.
[0037] Figure 2 This is a three-dimensional structural diagram of a first functional box in an embodiment of the power grid simulation power supply of the utility model from one perspective. Figure 3 The three-dimensional structural diagram of the first functional box in the embodiment of the power grid simulation power supply of the utility model from another perspective. The first functional box 100 includes a switch cabinet room 110, a first transformer room 120 and a power unit room 130. The switch cabinet room 110 includes an input terminal 111, an output terminal 112, and a combination switch cabinet 113. The combination switch cabinet 113 includes an input switch assembly and a bypass switch assembly. The first transformer room 120 includes a first transformer assembly 121. The input switch assembly is electrically connected between the input terminal 111 and the first transformer assembly 121. The bypass switch assembly is electrically connected to the input terminal 111 and the output terminal 112, and the bypass switch assembly conducts the input terminal 111 and the output terminal 112 in a closed state. The power unit room 130 includes a power unit assembly 131 and a reactor assembly 132. The first transformer assembly 121, the reactor assembly 132, and the power unit assembly 131 are electrically connected in sequence.
[0038] Figure 4 The third embodiment of the utility model power grid simulation power supply is a three-dimensional structural diagram of the second functional box. The second functional box 200 includes an output switch cabinet 211 and a second transformer assembly 221. The second transformer assembly 221 is electrically connected to the power unit assembly 131. The output switch cabinet 211 is electrically connected to the output terminal 112.
[0039] In this embodiment, the second functional box 200 includes an output switch cabinet room 210 and a second transformer room 220. The output switch cabinet room 210 includes an output switch cabinet 211. The second transformer room 220 includes a second transformer assembly 221.
[0040] The grid is connected to the input terminal 111 via a first high-voltage cable 910 , and the output terminal 112 can be connected to a power generation device via a second high-voltage cable 920 .
[0041] When the grid simulation power supply fails, the input switch assembly and the output switch cabinet room 210 are disconnected, and the bypass switch assembly is closed, thereby bypassing the entire grid simulation power supply.
[0042] According to the power grid simulation power supply of the embodiment of the utility model, the switch cabinet room 110 of the first functional box 100 has a combination switch cabinet 113, wherein the combination switch cabinet 113 includes an input switch assembly and a bypass switch assembly, the bypass switch assembly is electrically connected to the input terminal 111 and the output terminal 112, and the bypass switch assembly conducts the input terminal 111 with the output terminal 112 in a closed state. The power grid simulation power supply of the above-mentioned embodiment of the utility model has a bypass function, and the bypass switch assembly and the input switch assembly are integrated in the combination switch cabinet 113, and there is no need to set a separate function box for the bypass switch assembly, which reduces the number of function boxes of the power grid simulation power supply, thereby reducing the transportation and transmission costs of the power grid simulation power supply during transportation and transmission.
[0043] In some embodiments, the switch cabinet room 110 further includes a first voltage detection device 114 and a first current detection device. The first voltage detection device 114 is electrically connected to the input terminal 111. The first current detection device is built into the combination switch cabinet 113, and the first current detection device is electrically connected to the input terminal 111. In this embodiment, the first voltage detection device 114 and the first current detection device are arranged in the switch cabinet room 110, so as to facilitate the detection of the voltage and current of the power grid, thereby providing circuit protection and early warning.
[0044] In some embodiments, the switch cabinet room 110 further includes an auxiliary power transformer 115 and a fuse 116. The auxiliary power transformer 115 is electrically connected to the input terminal 111. The output end of the auxiliary power transformer 115 is electrically connected to the electrical equipment in the power grid simulation power supply to supply power to the electrical equipment in the power grid simulation power supply. In one example, the electrical equipment in the power grid simulation power supply includes the heat dissipation device 123, the control cabinet 141, etc. described later. The fuse 116 is connected in series between the input terminal 111 and the input end of the auxiliary power transformer 115. In the above embodiments, the switch cabinet room 110 includes the auxiliary power transformer 115, through which the auxiliary power transformer 115 can supply power to multiple electrical equipment in the power grid simulation power supply, which is convenient for controlling and automating the devices in the power grid simulation power supply. In some embodiments, the switch cabinet room 110 further includes a fuse 116 integrated in the auxiliary power transformer 115, and the fuse 116 is connected to the input end of the auxiliary power transformer 115, further improving the circuit protection effect on the power grid simulation power supply.
[0045] In some embodiments, the first functional box 100 further includes a control room 140. The switch cabinet room 110, the first transformer room 120, the power unit room 130, and the control room 140 are arranged in sequence.
[0046] In the above embodiment, the switch cabinet room 110, the first transformer room 120, the power unit room 130, and the control room 140 are arranged in sequence, so that the functional chambers in the first functional box 100 are reasonably laid out, which can reduce the number of cables between the chambers in the first functional box 100, facilitate on-site maintenance, and reduce the manpower and time costs required for maintenance.
[0047] In some embodiments, the first transformer chamber 120 further includes a second voltage detection device 122. The second voltage detection device 122 is electrically connected to the first transformer assembly 121. By providing the second voltage detection device 122, the voltage information of the circuit in the first transformer chamber 120 can be detected.
[0048] In some embodiments, the first transformer chamber 120 further includes a heat dissipation device 123, and the heat dissipation device 123 is used to dissipate heat inside the first transformer chamber 120. The heat dissipation device 123 is, for example, a heat dissipation fan.
[0049] In some embodiments, each functional box is provided with a heat dissipation device to ensure effective heat dissipation of the entire power grid simulation power supply, wherein the heat dissipation device may be an air-cooled heat dissipation device or a water-cooled heat dissipation device.
[0050] Optionally, the first transformer chamber 120 further includes a second current detection device, which is electrically connected to the first transformer assembly 121 and is used to detect current information of the circuit in the first transformer chamber 120 .
[0051] In some embodiments, the first transformer chamber 120 further includes a first adapter terminal 124. The first transformer assembly 121, the reactor assembly 132, the power unit assembly 131, and the first adapter terminal 124 are electrically connected in sequence. In some embodiments, the second transformer chamber 220 further includes a second adapter terminal 222, the second adapter terminal 222 is electrically connected to the second transformer assembly 221, and the second adapter terminal 222 is used to be electrically connected to the first adapter terminal 124.
[0052] In the above embodiment, the first transformer chamber 120 is provided with a first adapter terminal 124, and the second transformer chamber 220 is provided with a second adapter terminal 222, which facilitates the connection of the inter-box cables between the first functional box 100 and the second functional box 200, thereby reducing the time cost required for installation and maintenance.
[0053] In this embodiment, the first transformer assembly 121 is a multi-winding transformer.
[0054] In some embodiments, the power cell assembly 131 includes a plurality of power cells, and the reactor assembly 132 includes a plurality of reactors. The input switch assembly is connected to the primary winding of the first transformer assembly 121 through a cable, and the secondary winding of the first transformer assembly 121 is connected to the corresponding reactor through a three-phase high-voltage cable. The reactor and the power cell are connected to each other through high-voltage cables in a one-to-one correspondence. After being cascaded, each phase power cell passes through the insulating plate on the side wall between the first transformer chamber 120 and the power cell chamber 130 and enters the first transformer chamber 120, and is connected to the first transfer terminal 124 through a high-voltage cable.
[0055] In the above embodiment, the power unit assembly 131 and the reactor assembly 132 are integrated inside the first functional box 100, which reduces the size of the entire power grid simulation power supply, facilitates transportation and reduces costs.
[0056] In some embodiments, the control room 140 includes a control cabinet 141. The control cabinet 141 includes a control module and a communication module. The control module is used to control multiple devices of the power grid simulation power supply, and the communication module is used to communicate with external devices. The control cabinet 141 provides control and communication functions for the entire power grid simulation power supply and monitors the operation of the power grid simulation power supply in real time.
[0057] In this embodiment, the second functional box 200 further includes an output switch cabinet room 210 and a second transformer room 220. The output switch cabinet 211 is disposed in the output switch cabinet room 210, and the second transformer assembly 221 is disposed in the second transformer room 220. In some embodiments, the second functional box 200 further includes an output room 230. The second transformer room 220, the output room 230, and the output switch cabinet room 210 are arranged in sequence.
[0058] In the above embodiment, the second transformer chamber 220, the output chamber 230, and the output switch cabinet chamber 210 are arranged in sequence, so that the functional chambers in the second functional box 200 are reasonably laid out, which can reduce the number of cables between the chambers in the second functional box 200, facilitate on-site maintenance, and reduce the manpower and time costs required for maintenance.
[0059] In some embodiments, the output room 230 includes an output cabinet 231 , which is electrically connected between the second transformer assembly 221 and the output switch cabinet 211 .
[0060] In some embodiments, the second transformer assembly 221 includes three single-phase transformers, the low-voltage side of the single-phase transformer is connected to the second transfer terminal 222 through a cable, and the high-voltage side of the single-phase transformer is connected to the output cabinet 231 through a cable.
[0061] In some embodiments, the output chamber 230 also includes a third voltage detection device and a third current detection device. The third voltage detection device and the third current detection device are integrated in the output cabinet 231. The third voltage detection device and the third current detection device are electrically connected to the output terminal 112 via the output switch cabinet 211, respectively, to facilitate the detection of voltage information and current information of the circuit there.
[0062] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.
Claims
1. A power grid simulation power supply, characterized in that: include: The first function box includes a switch cabinet room, a first transformer room and a power unit room, the switch cabinet room includes an input terminal, an output terminal and a combination switch cabinet, the combination switch cabinet includes an input switch assembly and a bypass switch assembly, the first transformer room includes a first transformer assembly, the input switch assembly is electrically connected between the input terminal and the first transformer assembly, the bypass switch assembly is electrically connected to the input terminal and the output terminal, and the bypass switch assembly conducts the input terminal with the output terminal in a closed state, the power unit room includes a power unit assembly and a reactor assembly, the first transformer assembly, the reactor assembly and the power unit assembly are electrically connected in sequence; The second functional box includes an output switch cabinet and a second transformer assembly, wherein the second transformer assembly is electrically connected to the power unit assembly, and the output switch cabinet is electrically connected to the output terminal.
2. The grid simulation power supply according to claim 1, characterized in that: The switch cabinet room also includes: a first voltage detection device, electrically connected to the input terminal; The first current detection device is built in the combination switch cabinet, and the first current detection device is electrically connected to the input terminal.
3. The grid simulation power supply according to claim 1, characterized in that: The switch cabinet room also includes: An auxiliary power transformer is electrically connected to the input terminal, and an output end of the auxiliary power transformer is electrically connected to an electric device in the power grid simulation power supply to supply power to the electric device in the power grid simulation power supply; A fuse is connected in series between the input terminal and the input end of the auxiliary transformer.
4. The grid simulation power supply according to claim 1, characterized in that: The first transformer chamber also includes: a second voltage detection device, electrically connected to the first transformer assembly; A heat dissipation device is used to dissipate heat inside the first transformer chamber.
5. The grid simulation power supply according to claim 1, characterized in that: The first transformer chamber further includes a first transfer terminal, the first transformer assembly, the reactor assembly, the power unit assembly, and the first transfer terminal are electrically connected in sequence, and the first transfer terminal is used to be electrically connected to the second transformer assembly; The second functional box further includes a second transformer chamber, and the second transformer chamber further includes a second transfer terminal, the second transfer terminal is electrically connected to the second transformer assembly, and the second transfer terminal is used to be electrically connected to the first transfer terminal.
6. The grid simulation power supply according to claim 1, characterized in that: The first functional box also includes a control room, and the switch cabinet room, the first transformer room, the power unit room, and the control room are arranged in sequence.
7. The grid simulation power supply according to claim 6, characterized in that: The control room includes a control cabinet, which includes a control module and a communication module. The control module is communicatively connected to the input switch assembly and the bypass switch assembly of the combination switch cabinet, and the communication module is used to communicatively connect the control module to an external device.
8. The grid simulation power supply according to claim 1, characterized in that: The second functional box also includes an output switch cabinet room, a second transformer room and an output room. The output switch cabinet is arranged in the output switch cabinet room, the second transformer assembly is arranged in the second transformer room, and the second transformer room, the output room and the output switch cabinet room are arranged in sequence.
9. The grid simulation power supply according to claim 8, characterized in that: The output room includes an output cabinet, and the output cabinet is electrically connected between the second transformer assembly and the output switch cabinet.
10. The grid simulation power supply according to claim 9, characterized in that: The output chamber also includes: A third voltage detection device and a third current detection device are integrated in the output cabinet, and the third voltage detection device and the third current detection device are electrically connected to the output terminal via the output switch cabinet, respectively.