China Best Medium Voltage Transformer Manufacturer – GZDW Intelligent High Frequency Switching Power DC Cabinet – Changan Group

Product Summary
The intelligent high frequency switching DC power cabinet is accordance with DL7T459. GB/T 19826 and other relative standards. It combines high-frequency switching technology and computer technology, and the power output unit is designed by modularization (N+1). The display operation unit adopts the new touchable interface display and it could be live plugged and unplugged. It has the functions of ‘telecommand, telemetering, teleindication, teleadjusting It is especially suitable for unattended places such as 500kV and below substation, power plant and so on.

Environmental Conditions

1.Ambient Temperature: No more than +50℃ and no less than -10℃.

2.Altitude： No more than 2000m.

3.Relative Humidity: the average daily value is no more than 95% Jhe average monthly value is no more than 90%. 
(Earthquake Intensity: No more than 8 degrees.

5.lnstallalion locations: without fire, explosion danger, serious pollution, chemical corrosion and violent vibration.

6. Installation Site: Indoor
 
7.lnstallation mode: anchor bolt.welded

Product Features

1. Display Operation Unit: This panel adopts new PMS intelligent touchable interface display which is not only intuitive, but also very easy for setting system running parameters. Up to 255 parameters pictures can display nearly all running parameters including voltage value of every battery unit (or every battery group).Advanced touchable interface display replaces traditional pushbuttons, which can increase system reliability further.

2. AC power Distribution Unit: Using 2 ways of AC charging power supply lines, users can access 1 or 2 ways according to actual conditions. The system is distributed to each power module according to the principle of first route priority power supply.

3. Power output unit: it selects high frequency switching power supply module and uses N+1 mode. After the failure of individual modules, it will automatically exit operation without affecting the normal operation of the system. The reliability of the whole system is improved. The module can be live plugged, which makes the maintenance work very simple. The high frequency switching power module uses power factor correction technology and phase correction technology to reduce the influence of the system on the computer harmonic. The double closed loop voltage and current regulation technology and the unique current bending current sharing technology make the distribution of the output current of each module reasonable and effective, and ensure the power system is always in the best operation status.

4. Monitoring unit: it uses high performance microcomputer, scans and controls each unit in the system at real time, provides high quality DC output to Ihe control bus. At the same time, it V-T curve controls to the equalizing charge voltage and floating charge voltage of the battery, according to the ambient temperature parameters of battery operation, ensuring the battery is full capacity and in good condition. In addition, the monitoring system nnonilors the voltage curve of each battery, so as to facilitate the timely deletion of the battery.

Technical Parameters

Schematic diagram of structure