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Function and principle of hb-gzdw DC screen



I. meaning and function of DC screen
       DC panel is the abbreviation of DC power operation system. The general name is intelligent maintenance free DC power supply panel, referred to as DC panel, the general model is GZDW, and DC panel is used to supply this DC power supply.
DC power supply is widely used in power plants and substations. It provides power for control load, power load and DC emergency lighting load. It is the basis of modern power system control and protection.
      DC screen It is composed of AC distribution unit, charging module unit, step-down silicon chain unit, DC feeding unit, power distribution monitoring unit, monitoring module unit and insulation monitoring unit. It is mainly used in small and medium-sized power plants, hydropower stations, all kinds of substations, and other users of DC equipment (such as petrochemical, mining, railway, etc.) in power system. It is suitable for switch on / off and secondary circuit instruments, meters, relay protection and fault lighting.
      DC screen It is a new digital control, protection, management, measurement of new DC system.
       [click on the picture to find out DC power hb-gzdw
 GZDW intelligent maintenance free DC power supply panel
II. Working principle of DC panel
        DC screen After AC switching, two lines of municipal power supply input one way of AC to supply power to each charging module. The DC panel charging module converts the input three-phase AC into DC to charge the battery and supply power to the closing load. In addition, the closing bus supplies power to the control bus through the step-down device.
Each basic monitoring unit in the system is managed and controlled by the main monitoring unit, and the information collected by each basic monitoring unit is sent to the main monitoring unit for unified management through the communication line.
Main monitoring display DC system All kinds of information, users can also touch the display screen for information and operation, system information can also be connected to the remote monitoring system.
In addition to the monitoring of DC and DC power supply, it can also be used to monitor and control the AC and DC system.
III. main features of DC panel
The system adopts monitoring device, built-in insulation monitoring, battery detection, grounding line selection, battery activation, silicon chain voltage regulation, central signal and other functional units, which is greatly convenient for users to use;
The DC panel system adopts unique "one line through" wiring technology, which greatly facilitates the wiring in the screen of large capacity DC system and is convenient for user maintenance;
The charging module adopts natural cooling mode, which greatly improves the mean time between failures and can be used in places with relatively bad environment
The charging module can be plugged and plugged with hot line, and the average maintenance time is greatly reduced
The latest international soft switching technology is adopted, and high-quality famous brand products are used as main components
The maximum unbalance of output current between modules is better than ± 5%;
● reliable lightning protection and high degree of electrical insulation protection measures, insulation monitoring device real-time monitoring system insulation to ensure system and personal safety;
The monitoring module adopts large screen LCD touch screen display, real voice alarm
The monitoring program adopts object-oriented design idea and modular programming, which is conducive to program maintenance and upgrading;
The parameters of each part of the system can be set through the monitoring module, with detailed online help function
It has advanced functions such as smooth adjustment of output voltage and current, automatic temperature compensation of storage battery, etc
The combination of modern power electronic technology and computer technology can realize "telemetry, remote control, remote signaling and remote regulation" of power supply system and realize unattended operation
Automatic management and protection of storage battery, real-time automatic monitoring of terminal voltage, charging and discharging current of storage battery, control of equalizing charge and floating charge of storage battery, with sound and light alarm of over-voltage and over-current of battery;
The device can provide program support through public telephone line to realize remote maintenance and diagnosis.  


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