Portable direct-current power supply
A DC power supply, portable technology, applied in electrical components, DC power input conversion to DC power output, adjustment of electrical variables and other directions, can solve the problems of unable to provide DC power in time, complicated operation of connecting power, and unstable operation of equipment, etc. The effect of light weight, small size and easy adjustment
A DC power supply, portable technology, applied in electrical components, DC power input conversion to DC power output, adjustment of electrical variables and other directions, can solve the problems of unable to provide DC power in time, complicated operation of connecting power, and unstable operation of equipment, etc. The effect of light weight, small size and easy adjustment
CN104009652AInactive Publication Date: 2014-08-27STATE GRID CORP OF CHINA +1
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[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention, and the described embodiments are only part of the embodiments of the present invention, not all of them.
[0026] Such as figure 1 As shown, the lightning protection device, AC power distribution unit, charging module, step-down unit and control circuit are connected in sequence; the lightning protection device, AC power distribution unit, charging module, step-down unit and control circuit are all connected to the centralized monitoring and insulation monitoring unit Connected; the centralized monitoring and insulation monitoring unit is connected to the remote interface; the AC input is provided to the charging module through the lightning protection device and the AC power distribution unit; the charging module outputs stable DC, and the step-down unit provides...
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The invention provides a portable direct-current power supply which is used for temporary standby application and used for a test. The portable direct-current power supply comprises a lightning protection device, an alternating-current distribution unit, a charging module, a voltage reduction unit, a control circuit and a centralized monitoring and insulating monitoring unit. The portable direct-current power supply is suitable for medium and small power plants, hydroelectric power stations and all types of transformer substations in electric systems and is suitable for other users, such as petrochemical enterprises, mines and railways, utilizing direct-current devices. The portable direct-current power supply can provide an experiment direct-current power supply, can temporarily replace an existing direct-current power supply, is suitable for serving as a standby direct-current power supply for relay protection and fault illumination for instruments, meters, and the like in a secondary circuit. In order to meet the requirement of on-site running, the portable direct-current power supply can not only serve as a direct-current power supply but also monitor overvoltage or voltage shortage of a bus, and can be connected with a local monitoring system through a 485 remote communication interface so that the portable direct-current power supply can be monitored remotely and on site.
Description
technical field [0001] The invention relates to a DC power supply, in particular to a portable DC power supply for temporary backup and testing, which is suitable for small and medium-sized power plants, hydropower stations, various substations, and other users using DC equipment, such as petrochemicals, mines, Railways, etc., can provide experimental DC power supply, and can also temporarily replace the original DC power supply. It is suitable for backup DC power supply for instruments, meters, relay protection and fault lighting in the secondary circuit, and belongs to the field of relay protection. Background technique [0002] The DC power supply is widely used in substations, distribution stations, and power plants. Generally, the DC charger is charged by AC 220V, and the DC charger supplies the DC bus to ensure the load demand on the DC bus in a short time. DC power supply for electrical devices such as AC uninterruptible power supply for control of automation devices....
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Patent Timeline
27 Aug 2014
Publication
CN104009652A
- IPC
- H02M7/04; H02M3/24
- Inventors
- ๆ่ฑ้; ็ๆฅๅจ