Portable test power supply
Through the design of a convenient test power supply and the use of battery modules and inverter modules to convert power, the problem of power supply mismatch in outdoor high and low voltage switchgear tests is solved, and flexible adaptation and efficient testing of various voltage types are achieved.
Patent Information
- Application Number
- CN202422637193.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-10-30
AI Technical Summary
When testing high and low voltage switchgear in outdoor environments, the lack of a corresponding power supply makes the test work inconvenient, especially since different switchgears have different operating power supplies and cannot meet various voltage requirements.
A portable test power supply is designed, which includes a battery module, an inverter module and power modules with multiple voltage levels. The inverter module converts DC power into AC power, and the power module converts it into DC output of different voltage levels. It has flexibility and versatility, supporting multiple voltage types such as AC220V, DC48V, DC110V, and DC220V.
It can quickly meet the power supply requirements of high and low voltage switchgear tests in outdoor environments regardless of the presence or absence of AC power, improve test efficiency and flexibility, and reduce test preparation time.
Smart Images
Figure CN223364025U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to electric power technology and power supply management technology, in particular to a portable test power supply. Background Art
[0002] With the advancement of science and technology, substation upgrades and new projects are increasing, and high and low voltage switchgear is becoming increasingly advanced and complex. In many cases, especially when conducting tests outdoors without a power source, the lack of a corresponding power supply often limits test results and significantly impacts the effectiveness and progress of the tests. When testing high and low voltage switchgear outdoors or in the early stages of a project, different switchgear operating power supplies vary, with power requirements ranging from AC220V, DC48V, DC110V, and DC220V. These various power supplies must be brought to the site, and sometimes no matching power supply is available nearby, causing significant inconvenience to the high and low voltage switchgear testing. Utility Model Content
[0003] The purpose of the utility model is to overcome the defect in the prior art that when high and low voltage switchgear are tested in an outdoor environment, the lack of a corresponding matching power supply causes great inconvenience to the test work of the high and low voltage switchgear, and to provide a convenient test power supply.
[0004] The purpose of this utility model is achieved through the following technical solutions:
[0005] A portable test power supply comprises a battery module, an inverter module and several power modules of different voltage levels. The battery module is connected to the inverter module, which is simultaneously connected to several power modules of different voltage levels, or the inverter module is connected to an AC output terminal, and the power module is provided with a DC output terminal. The battery module is used to provide a DC power supply, the inverter module is used to convert the DC power supply of the power module into AC power, and the power module is used to convert the AC power into a DC output of a corresponding voltage level. The AC power output by the inverter module is also directly used for AC output.
[0006] The battery module has a DC output. The portable test power supply primarily requires DC power of varying voltage levels. Therefore, the DC output is converted to AC power via an inverter module. The AC power is then converted to DC output of varying voltage levels via the power module. When AC output is required, the AC power converted by the inverter module can also be directly output. Therefore, regardless of the type and specification of operating power required on-site, the portable test power supply in this solution can meet the requirements. The purpose of converting DC power to AC power via an inverter module is to provide greater flexibility and versatility. AC power can be more easily adjusted in voltage and current through transformers, rectifiers, and other equipment to suit different application scenarios and voltage requirements.
[0007] Preferably, the portable test power supply also includes an AC input, which is connected to the power module and the AC output at the same time; a first contactor is provided on the live wire of the AC input, and a second contactor is provided between the inverter module and the power module, or between the inverter module and the AC output.
[0008] This solution's AC input design allows for connecting an external AC input to the switchgear, converting it into a DC output of varying voltage requirements. This design enhances the portable test power supply's scalability and improves its efficiency. The contactor design effectively avoids conflicts between battery module power supply and AC power supply.
[0009] Preferably, the portable test power supply further includes a monitoring module, which is connected to both the battery module and the power module. The monitoring module is used to monitor the battery current and battery operating condition, as well as the operating condition and load current of the power module.
[0010] Preferably, the power supply module includes a DC48V power supply module, a DC110V power supply module and a DC220V power supply module.
[0011] Preferably, a battery switch is provided between the battery module and the inverter module, and an AC switch is provided between the inverter module and the power module or between the inverter module and the AC output terminal.
[0012] Preferably, the portable test power supply further includes an output switch, one end of the output switch is connected to the power module or the AC output end, and the other end of the output switch is connected to the power module or the AC input.
[0013] Preferably, the inverter module is further provided with a charging plug. When the battery module needs to be charged, the charging plug can be used to charge the battery module through the inverter module.
[0014] The beneficial effect of the utility model is that in an outdoor environment, regardless of whether there is AC power, the portable test power supply can be used to control the inverter module, the power module, etc., so that the AC power, DC48V power supply, DC110V power supply, and DC220V power supply required for the high and low voltage switchgear test can be obtained conveniently and quickly, thereby greatly saving the test preparation time of the switchgear and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a circuit principle diagram of the utility model. DETAILED DESCRIPTION
[0016] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art.
[0017] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner.In the following description, many specific details are provided so as to provide a full understanding of the embodiments of the present application. However, it will be appreciated by those skilled in the art that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps etc. can be adopted. In other cases, known methods, devices, implementations or operations are not shown or described in detail to avoid blurring the various aspects of the application.
[0018] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities may be implemented in software, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices. Figure 1 As shown, the portable test power supply includes a battery module, an inverter module MK1, and three power modules with different voltage levels: a DC48V power module MK2, a DC110V power module MK3, and a DC220V power module MK4. The battery module is connected to the inverter module, which is simultaneously connected to several power modules with different voltage levels, or to an AC output terminal. The power modules have DC output terminals. The battery module provides a DC48V DC power supply, while the inverter module converts the DC power from the power modules into AC power. The power modules then convert the AC power into a DC output of the corresponding voltage level. The AC power output from the inverter module is also directly used for the AC output. A battery switch ZK is provided between the battery module and the inverter module, and an AC switch KK is provided between the inverter module and the power module, or between the inverter module and the AC output terminal. The portable test power supply also includes an output switch QK, one end of which is connected to the power module or the AC output terminal, and the other end of which is connected to the power module or the AC input.
[0019] The battery module has a DC output. The portable test power supply primarily requires DC power of varying voltage levels. Therefore, the DC output is converted to AC power via an inverter module. The AC power is then converted to DC output of varying voltage levels via the power supply module. When AC output is required, the AC power converted by the inverter module can also be directly output. Therefore, regardless of the type and specification of operating power required on-site, the portable test power supply in this solution can meet the requirements. The purpose of converting DC power to AC power via an inverter module is to provide greater flexibility and versatility. AC power can be more easily adjusted by the power supply module for voltage and current scenarios to accommodate different application scenarios and voltage requirements.
[0020] The portable test power supply also includes an AC input, which is connected to the power module and the AC output at the same time; a first contactor KM is provided on the live wire of the AC input, and a second contactor KM is provided between the inverter module and the power module, or between the inverter module and the AC output.
[0021] This solution's AC input design allows for connecting an external AC input to the switchgear, converting it into a DC output of varying voltage requirements. This design enhances the portable test power supply's scalability and improves its efficiency. The contactor design effectively avoids conflicts between battery module power supply and AC power supply.
[0022] In this embodiment, a contactor is further provided between the neutral wire and the live wire, which can serve as a main switch to control the on and off of the AC power input.
[0023] The portable test power supply also includes a monitoring module, which is connected to both the battery module and the power module. The monitoring module is used to monitor the battery current and operating condition, as well as the operating condition and load current of the power module. The monitoring module collects battery current information output at the positive terminal of the battery module. The load current monitoring terminal is set between the output switch QK and the power module or AC output.
[0024] The inverter module is also provided with a charging plug. When the battery module needs to be charged, the charging plug can be used to charge the battery module through the inverter module.
[0025] In this implementation, the portable test power supply has two working modes. In mode one, there is no AC power on site. The battery switch ZK, AC switch KK and output switch QK are closed. The DC48V battery module is converted into AC power through the inverter, and then the corresponding DC48V, DC110V and DC220V are obtained through the power module, or AC power is obtained directly. In mode two, there is AC power on site. The AC power is connected, the battery switch ZK and AC switch KK are disconnected, and the output switch QK is closed. The AC power is converted through the power module to the corresponding DC48V, DC110V and DC220V, or AC power is obtained directly.
[0026] Those skilled in the art will readily conceive of other embodiments of the present application after considering the specification and practicing the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of this application and include common knowledge or customary techniques in the art that are not disclosed herein.
[0027] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.
Claims
1. A portable test power supply, characterized in that: It includes a battery module, an inverter module and several power modules with different voltage levels. The battery module is connected to the inverter module, and the inverter module is simultaneously connected to several power modules with different voltage levels, or the inverter module is connected to the AC output end, and the power module is provided with a DC output end; the battery module is used to provide DC power, the inverter module is used to convert the DC power of the power module into AC power, and the power module is used to convert AC power into DC output of the corresponding voltage level; the AC power output by the inverter module is also directly used for AC output.
2. A portable test power supply according to claim 1, characterized in that: It also includes an AC input, which is connected to the power module and the AC output at the same time; a first contactor is provided on the live wire of the AC input, and a second contactor is provided between the inverter module and the power module, or between the inverter module and the AC output.
3. A portable test power supply according to claim 1, characterized in that: It also includes a monitoring module, which is connected to the battery module and the power module at the same time. The monitoring module is used to monitor the battery current and battery operating condition, as well as the operating condition and load current of the power module.
4. A portable test power supply according to claim 1, characterized in that: The power supply modules include DC48V power supply module, DC110V power supply module and DC220V power supply module.
5. A portable test power supply according to claim 1, characterized in that: A battery switch is provided between the battery module and the inverter module, and an AC switch is provided between the inverter module and the power module or between the inverter module and the AC output end.
6. A portable test power supply according to claim 2, characterized in that: It also includes an output switch, one end of the output switch is connected to the power module or the AC output end, and the other end of the output switch is connected to the power module or the AC input.
7. A portable test power supply according to claim 1, characterized in that: The inverter module is also provided with a charging plug.