CN222866804U - Energy storage cabinet system and energy storage cabinet system testing system for convenient withstand voltage testing - Google Patents
Energy storage cabinet system and energy storage cabinet system testing system for convenient withstand voltage testing Download PDFInfo
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- CN222866804U CN222866804U CN202421135052.5U CN202421135052U CN222866804U CN 222866804 U CN222866804 U CN 222866804U CN 202421135052 U CN202421135052 U CN 202421135052U CN 222866804 U CN222866804 U CN 222866804U
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Abstract
The utility model relates to a high-voltage power equipment technology, and discloses an energy storage cabinet system convenient for withstand voltage test and a test system of the energy storage cabinet system, which comprise an electric storage module, a high-voltage distribution box, an energy storage converter and an alternating current output switch; the power storage module is electrically connected with a direct current side of the energy storage converter through the high-voltage distribution box, a plurality of alternating current output ends are arranged on an alternating current side of the energy storage converter, the alternating current output ends are connected with an external power grid through alternating current output switches, the alternating current output ends are further used as voltage application points for withstand voltage tests, a first terminal and a second terminal are arranged on a shell of the energy storage converter, each alternating current output end is electrically connected with the first terminal through a lightning arrester inside the energy storage converter, the second terminal is connected with a grounding wire, and the second terminal is connected with the first terminal through a detachable cable outside the shell of the energy storage converter. The utility model aims to improve the convenience of related testers for carrying out pressure resistance test on the energy storage cabinet system.
Description
Technical Field
The utility model relates to the technical field of high-voltage power equipment, in particular to an energy storage cabinet system convenient for withstand voltage test and a test system of the energy storage cabinet system.
Background
The energy storage converter is a core component in the energy storage cabinet system and is generally used for realizing bidirectional conversion of electric energy, converting the electric energy stored in the energy storage cabinet system into usable alternating current electric energy or direct current electric energy, and storing the electric energy generated by an external power grid or a renewable energy source system into the energy storage cabinet system.
Because the energy storage cabinet system can be connected with an external power grid in the operation process, if the alternating current side has the problems of insulation fault or electric leakage and the like, potential safety hazards such as electric shock and fire disaster can be caused, and therefore the alternating current side needs to be subjected to voltage withstand test. The withstand voltage test can verify the withstand voltage capability of the energy storage cabinet system under normal working conditions, ensure that the equipment cannot be damaged or failed due to voltage impact and other reasons in long-term operation, and improve the stability and reliability of the system.
When the voltage withstand test is carried out on the alternating current side of the energy storage converter, a tester is generally required to open a cover of the energy storage converter, and then the voltage applied to the alternating current side can be tested after the connection between the energy storage converter and the grounding wire is disconnected. The mode is complex in operation, brings a lot of unnecessary work for testers, and is time-consuming and labor-consuming.
The foregoing is provided merely for the purpose of facilitating understanding of the technical solutions of the present utility model and is not intended to represent an admission that the foregoing is prior art.
Disclosure of utility model
The utility model provides an energy storage cabinet system convenient for withstand voltage test and a test system of the energy storage cabinet system, and aims to improve the convenience of relevant testers for withstand voltage test of the energy storage cabinet system.
In order to achieve the aim, the utility model provides an energy storage cabinet system convenient for withstand voltage test, which comprises an electric storage module, a high-voltage distribution box, an energy storage converter and an alternating current output switch, wherein the electric storage module is electrically connected with a direct current side of the energy storage converter through the high-voltage distribution box, and the alternating current side of the energy storage converter is provided with a plurality of alternating current output ends which are connected with an external power grid through the alternating current output switch;
A first terminal and a second terminal are arranged on the shell of the energy storage converter, and each alternating current output end is electrically connected with the first terminal through a lightning protection device in the energy storage converter;
The second terminal is connected to the first terminal by a detachable cable outside the housing of the energy storage converter.
Optionally, a connection interface of the first terminal and/or the second terminal is adapted to a joint of the detachable cable, and the connection interface is a threaded interface or a bolt interface.
Optionally, a core module is further arranged in the energy storage converter except for the lightning protection device, and a power conversion unit, an alternating current circuit filter and a grid-connected relay are sequentially arranged in the core module from the direct current side to the alternating current side.
Optionally, a plurality of storage batteries are connected in series in the storage module.
Optionally, the energy storage cabinet system further comprises a controller, wherein a control signal output end of the controller is electrically connected with the high-voltage distribution box, the energy storage converter and the alternating current output switch respectively, and a data acquisition end of the controller is electrically connected with the electric storage module.
Optionally, a temperature acquisition module is further arranged inside the cabinet machine of the energy storage cabinet system, and the temperature acquisition module is electrically connected with the data acquisition end of the controller.
Optionally, the energy storage cabinet system further comprises an alarm module, and the alarm module is electrically connected with the control signal output end of the controller;
And/or, the energy storage cabinet system further comprises a communication module, and the communication module is electrically connected with the communication end of the controller.
The utility model further provides a test system of the energy storage cabinet system, which comprises the energy storage cabinet system convenient for pressure resistance test and the pressure resistance test device, wherein the pressure resistance test device is electrically connected with the alternating current output end of the energy storage cabinet system.
The technical scheme has the advantages that the first terminal and the second terminal are arranged on the shell of the energy storage converter, when the energy storage cabinet system is normally used, the detachable cable is used outside the energy storage converter to connect the first terminal and the second terminal, so that the energy storage converter is connected with the ground wire, when the pressure resistance test is needed to be carried out on the energy storage cabinet system, the cable is pulled out manually, so that a tester can disconnect the lightning arrester of the energy storage converter from the ground wire without opening the cover of the energy storage converter, and then the pressure resistance test is needed to be carried out on the energy storage cabinet system, and the detachable cable is pulled out directly. Therefore, a tester can perform pressure-resistant test on the energy storage cabinet system more quickly and conveniently, and the operation efficiency and safety are improved.
Drawings
FIG. 1 is a schematic diagram of an embodiment of an energy storage cabinet system for facilitating withstand voltage testing according to the present utility model;
Fig. 2 is a schematic structural diagram of another embodiment of an energy storage cabinet system for facilitating withstand voltage test according to the present utility model.
The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present utility model will be made more clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear are used in the embodiments of the present utility model) are merely for explaining the relative positional relationship, movement conditions, and the like between the components in a certain specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicators are changed accordingly.
It will also be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only (e.g., to distinguish between identical or similar elements) and is not to be construed as indicating or implying a relative importance or an implicit indication of the number of features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
The utility model provides an energy storage cabinet system convenient for withstand voltage test, and referring to fig. 1, the energy storage cabinet system comprises an electric storage module, a high-voltage distribution box, an energy storage converter and an alternating current output switch, wherein the electric storage module is electrically connected with a direct current side of the energy storage converter through the high-voltage distribution box, a plurality of alternating current output ends are arranged on an alternating current side of the energy storage converter, and the alternating current output ends are connected with an external power grid through the alternating current output switch;
A first terminal D1 and a second terminal D2 are arranged on the shell of the energy storage converter, and each alternating current output end is electrically connected with the first terminal D1 through a lightning protection device F in the energy storage converter, wherein the second terminal D2 is connected with a ground wire;
The second terminal D2 is connected to the first terminal D1 by a detachable cable outside the housing of the energy storage converter.
In this embodiment, the storage module is used for storing electric energy, and may be composed of a series of batteries, and the batteries may be lithium batteries, lead-acid batteries or other types of batteries. Its main function is to store and release electrical energy when needed to meet the system's demand for electrical energy.
The high-voltage distribution box (also called as a direct-current high-voltage box) is responsible for distributing and managing electric energy. The high-voltage distribution box is responsible for receiving the direct-current electric energy from the electric storage module and distributing the direct-current electric energy to the energy storage converter for conversion or output. Meanwhile, the high-voltage distribution box can monitor and protect electric energy, and stable operation of the system is ensured.
In the energy storage cabinet system, the high-voltage distribution box plays a role in connection and electric energy transmission. It can distribute the electric energy to different channels or components according to the needs of the system to meet the electric energy demand of the system. Meanwhile, the high-voltage distribution box can also comprise some protection devices, such as overload protection, short-circuit protection and the like, so as to ensure that the system can safely operate under abnormal conditions.
When the high-voltage distribution box receives the direct current provided by the power storage module, the direct current is distributed and conveyed to the direct current side of the core module in the energy storage converter, and then the core module converts the direct current into alternating current and outputs the alternating current. The core module has a current conversion function, such as an ac-dc conversion or an ac-dc conversion.
The ac side of the energy storage converter has a plurality of ac outputs, each of which is connected to an external power grid via an ac output switch (also called ac disconnector). By controlling the opening and closing of the AC output switch, whether each AC output end is connected with an external power grid or not can be correspondingly controlled.
Optionally, the shell of the energy storage converter is provided with a first terminal D1 and a second terminal D2, and if the shell of the energy storage converter is conductive (such as a shell made of metal), the first terminal D1 and the second terminal D2 are not in direct contact with the shell, and can be isolated from each other by corresponding insulating media, or the first terminal D1 and the second terminal D2 are preferably arranged in a safe controllable area (such as a panel area) of the shell, and the safe controllable area and other areas of the shell are not electrified, so that the possibility of accidental touch, electric leakage or misoperation can be effectively reduced, and the safety of the system is improved.
Optionally, in the energy storage converter, one lightning protection device F is configured for each ac output end (i.e. ac lightning protection device F), and each ac output end is connected to the first terminal D1 via the corresponding lightning protection device F, in addition to the ac output switch connected to the outside of the energy storage converter, inside the energy storage converter. The lightning protector F is a device for protecting electrical equipment from lightning or overvoltage. When lightning or overvoltage occurs in the power grid, the lightning protection device F can guide the energy of the lightning or the overvoltage to the ground so as to protect the electrical equipment from being damaged.
Meanwhile, the second terminal D2 is connected to the ground through a ground line. When the energy storage cabinet system is normally used and the withstand voltage test is not needed, the detachable cable is used outside the shell of the energy storage converter to connect the first terminal D1 and the second terminal D2, so that the connection between the lightning protection device F and the ground wire is realized.
When the voltage withstand test is required to be performed on the energy storage cabinet system, a tester can pull out the detachable cable outside the energy storage converter manually, disconnect the grounding of the lightning protection device F, take the alternating current output end as a voltage applying point of the voltage withstand test at the moment, apply alternating current or high-voltage direct current (such as 2800V, 3100V and other high-voltage direct current) to the ground to perform the voltage withstand test. At this time, the lightning protection device F is disconnected from the ground line, so that the withstand voltage test is not affected (i.e., the withstand voltage test is not failed).
The detachable cable for connecting the first terminal D1 and the second terminal D2 is outside the shell of the energy storage converter, so that a tester does not need to open a cover of the energy storage converter, and after the energy storage converter is disconnected from the ground, the pressure-resistant test can be performed on the energy storage cabinet system, and the detachable cable is directly pulled out. Therefore, a tester can perform pressure-resistant test on the energy storage cabinet system more quickly and conveniently, and the operation efficiency and safety are improved.
In an embodiment, the connection between the energy storage converter and the ground wire is realized by arranging a first terminal and a second terminal on a shell of the energy storage converter and connecting the first terminal and the second terminal outside the energy storage converter by using a detachable cable when the energy storage cabinet system is used normally; when the voltage withstand test is required to be performed on the energy storage cabinet system, the cable is pulled out manually, so that a tester does not need to open a cover of the energy storage converter, and the connection between the lightning arrester of the energy storage converter and the grounding wire can be disconnected, and then the voltage withstand test is required to be performed on the energy storage cabinet system, but the detachable cable is pulled out directly. Therefore, a tester can perform pressure-resistant test on the energy storage cabinet system more quickly and conveniently, and the operation efficiency and safety are improved.
In an embodiment, on the basis of the above embodiment, the connection interface of the first terminal D1 and/or the second terminal D2 is adapted to the connector of the detachable cable, and the connection interface is a threaded interface or a plug interface.
In this embodiment, the connection interface of the first terminal D1 and/or the second terminal D2 is designed to be adapted to the connector of the detachable cable, and the connection interface may be a threaded interface or a plug interface, so that not only the connection stability and reliability can be improved, but also the detachment is easier.
Through adopting screwed interface or bolt interface, can dismantle the cable and can be closely be connected with the terminal, ensured stability and the security of connection. When the cable is required to be disassembled, the cable can be easily separated from the terminal by simply unlocking the screw thread or unlocking the bolt, and additional tools or complex operation are not required, so that time and energy are saved.
In an embodiment, on the basis of the foregoing embodiment, a core module is further disposed in the energy storage converter, except for the lightning protection device F, where in the core module, a power conversion unit, an ac circuit filter, and a grid-connected relay are sequentially disposed from a dc side to an ac side.
In this embodiment, in the core module inside the energy storage converter, the ac output of the power conversion unit is connected to the grid-connected relay after passing through the ac filter circuit.
The power conversion unit is used for converting the power of the energy storage converter to convert direct-current electric energy into alternating-current electric energy or vice versa. It is responsible for controlling and regulating the flow of electrical energy, ensuring that the system can operate efficiently.
The alternating current circuit filter is used for filtering stray signals and noise in the circuit and guaranteeing stability and purity of output voltage. It can reduce electromagnetic interference and harmonic wave and raise the working efficiency and reliability of system.
The grid-connected relay is used for controlling the on-off of each path of alternating current output.
In an embodiment, in addition to the above embodiment, a plurality of storage batteries are connected in series in the power storage module.
In an embodiment, based on the foregoing embodiment, referring to fig. 2, the energy storage cabinet system further includes a controller, where a control signal output end of the controller is electrically connected to the high-voltage distribution box, the energy storage converter, and the ac output switch, and a data acquisition end of the controller is electrically connected to the power storage module.
In this embodiment, in the energy storage cabinet system, the controller takes on important tasks of monitoring, managing and controlling the whole system.
The control signal output end of the controller is respectively and electrically connected with the high-voltage distribution box, the energy storage converter and the alternating current output switch. This means that the controller can send instructions to these devices to control their operating state. Through control signal output, the controller can realize the accurate control of each key component of the energy storage system so as to meet the requirement of system operation.
The data acquisition end of the controller is electrically connected with the power storage module, and can acquire various parameter data of the power storage module, such as voltage, current, temperature and the like in real time. The data are critical to the monitoring and management of the system, and the controller can adjust and optimize in real time according to the data, so that the safe and stable operation of the system is ensured.
Through the control signal output and the data acquisition function of the controller, the energy storage cabinet system can realize intelligent control and monitoring of each component, improves the running efficiency and reliability of the system, and simultaneously provides convenience for remote monitoring and management of the system.
In an embodiment, referring to fig. 2, based on the foregoing embodiment, a temperature acquisition module is further disposed inside the cabinet of the energy storage cabinet system, and the temperature acquisition module is electrically connected to the data acquisition end of the controller.
In this embodiment, the temperature acquisition module may monitor the temperature change inside the cabinet in real time, and transmit these data to the controller, so that the system may make corresponding adjustment and protection measures.
Optionally, the temperature acquisition module can acquire temperature data of each component in the cabinet in real time, including batteries, electronic components and the like, so as to ensure that the system operates in a safe temperature range (for example, a temperature sensor connected with the temperature acquisition module can be arranged in a high-voltage distribution box and an energy storage converter body).
Optionally, the temperature acquisition module may transmit the acquired temperature data to the controller for analysis and processing by the controller through electrical connection with the data acquisition end of the controller.
When the internal temperature of the cabinet exceeds the set safety range, the controller can trigger a corresponding protection mechanism according to the received temperature data, such as adjusting the fan speed (a corresponding cooling fan can be arranged in the cabinet), reducing the charge and discharge power and the like, so as to prevent damage caused by overheat of the system.
For example, in the process of performing pressure resistance test on the energy storage cabinet system, when the temperature acquisition module detects that the temperature in the cabinet exceeds the standard, a protection mechanism of the system can be triggered, so that potential danger caused by overheating is prevented. This is because the system may be in a high load and long-time operation state during the pressure-proof test, which may cause the temperature inside the cabinet to rise. The temperature exceeding is detected by the temperature acquisition module, and the system can take measures in time, such as reducing charge and discharge power or increasing the rotating speed of a fan, so as to ensure that the system operates within a safe range, and thus the energy storage cabinet system can be protected from potential damage caused by overheat.
By monitoring and adjusting the internal temperature of the cabinet, the system can better control the working state of each component, improve the working efficiency and reliability of the system and prolong the service life of the equipment.
In an embodiment, referring to fig. 2, based on the above embodiment, the energy storage cabinet system further includes an alarm module, where the alarm module is electrically connected to a control signal output end of the controller;
And/or, the energy storage cabinet system further comprises a communication module, and the communication module is electrically connected with the communication end of the controller.
In this embodiment, the alarm module is used to send out an alarm signal (for example, through the temperature acquisition module, the temperature abnormality in the cabinet is detected) when the system is abnormal or fails, so as to notify related personnel or a system administrator. By electrically connecting the alarm module to the control signal output of the controller, the controller can trigger an alarm signal when a system anomaly is detected. The design can prompt operation staff or a monitoring system in time, so that the operation staff or the monitoring system can take measures rapidly to cope with problems, and the influence of system faults on production or operation is reduced.
The communication module allows the energy storage cabinet system to communicate data with external systems or devices, such as data exchange and remote control with a monitoring center, remote server, or other energy storage system. The communication module is electrically connected to the communication end of the controller, so that real-time information exchange between the system and the external environment can be realized. The design enables the system to have the capabilities of remote monitoring, remote management and collaborative operation with other systems, and the intelligent level and the expandability of the system are greatly improved.
Based on the communication module, the system can remotely feed back the running state (including abnormal state) and the voltage withstand test result of the system, thereby improving the monitoring capability and the management efficiency of the system,
The utility model further provides a test system of the energy storage cabinet system, which comprises the energy storage cabinet system and the withstand voltage test device, wherein the withstand voltage test device is electrically connected with the alternating current output end of the energy storage cabinet system.
The specific structure of the energy storage cabinet system refers to the above embodiments, and since the test system of the energy storage cabinet system adopts all the technical solutions of all the embodiments, at least all the technical effects brought by the technical solutions of the embodiments are provided, and will not be described in detail herein.
Optionally, the withstand voltage testing device can test the insulation performance of the system under the high voltage condition by applying a high voltage power supply (such as alternating current or direct current) to the alternating current output end of the energy storage cabinet system so as to evaluate whether the system can effectively isolate the power supply under the high voltage environment and prevent accidents or faults caused by electrical problems.
Optionally, by applying a high-voltage power supply, the withstand voltage testing device can verify the withstand voltage capability of the energy storage cabinet system, namely, whether the system can normally operate within a certain voltage range and the problems of breakdown, electric leakage and the like do not occur.
The above description of the preferred embodiments of the present utility model should not be taken as limiting the scope of the utility model, but rather should be understood to cover all modifications, variations and adaptations of the present utility model using its general principles and the following detailed description and the accompanying drawings, or the direct/indirect application of the present utility model to other relevant arts and technologies.
Claims (8)
1. The energy storage cabinet system is characterized by comprising an electric storage module, a high-voltage distribution box, an energy storage converter and an alternating current output switch, wherein the electric storage module is electrically connected with a direct current side of the energy storage converter through the high-voltage distribution box, a plurality of alternating current output ends are arranged on an alternating current side of the energy storage converter, and the alternating current output ends are connected with an external power grid through the alternating current output switch;
A first terminal and a second terminal are arranged on the shell of the energy storage converter, and each alternating current output end is electrically connected with the first terminal through a lightning protection device in the energy storage converter;
The second terminal is connected to the first terminal by a detachable cable outside the housing of the energy storage converter.
2. The energy storage cabinet system for facilitating withstand voltage testing according to claim 1, wherein the connection interface of the first terminal and/or the second terminal is adapted to the connector of the detachable cable, and the connection interface is a threaded interface or a plug interface.
3. The energy storage cabinet system convenient for withstand voltage test as claimed in claim 1, wherein a core module is arranged in the energy storage converter besides the lightning protection device, and a power conversion unit, an alternating current circuit filter and a grid-connected relay are sequentially arranged in the core module from a direct current side to an alternating current side.
4. The energy storage cabinet system for facilitating withstand voltage test as recited in claim 1, wherein a plurality of storage batteries are connected in series in the storage module.
5. The energy storage cabinet system for facilitating withstand voltage test according to any one of claims 1-4, further comprising a controller, wherein a control signal output end of the controller is electrically connected to the high-voltage distribution box, the energy storage converter and the alternating current output switch, respectively, and a data acquisition end of the controller is electrically connected to the electricity storage module.
6. The energy storage cabinet system convenient for withstand voltage test according to claim 5, wherein a temperature acquisition module is further arranged inside a cabinet of the energy storage cabinet system, and the temperature acquisition module is electrically connected with a data acquisition end of the controller.
7. The energy storage cabinet system for facilitating withstand voltage testing as recited in claim 6, further comprising an alarm module electrically connected to a control signal output of the controller;
And/or, the energy storage cabinet system further comprises a communication module, and the communication module is electrically connected with the communication end of the controller.
8. A test system for an energy storage cabinet system, comprising the energy storage cabinet system for facilitating withstand voltage test according to any one of claims 1-7, and a withstand voltage test device electrically connected to an ac output end of the energy storage cabinet system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421135052.5U CN222866804U (en) | 2024-05-23 | 2024-05-23 | Energy storage cabinet system and energy storage cabinet system testing system for convenient withstand voltage testing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421135052.5U CN222866804U (en) | 2024-05-23 | 2024-05-23 | Energy storage cabinet system and energy storage cabinet system testing system for convenient withstand voltage testing |
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| Publication Number | Publication Date |
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| CN222866804U true CN222866804U (en) | 2025-05-13 |
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| CN202421135052.5U Active CN222866804U (en) | 2024-05-23 | 2024-05-23 | Energy storage cabinet system and energy storage cabinet system testing system for convenient withstand voltage testing |
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| CN (1) | CN222866804U (en) |
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