With the development of data center technology and the requirement of reducing operation cost and energy-saving and emission-reduction,HVDC has obvious advantages over traditional UPS in terms of energy saving, investment cost reducing, high reliability and convenient operation and maintenance. Meanwhile, with more and more widely application in large Internet data centers and other fields, HVDC power supply will gradually become the trend of power supply for data center in the future.
In order to keep the safe, stable and reliable operation of HVDC system, the precision DC power distribution unit is adopted to realize high accuracy electric monitoring of each circuit in DC array cabinet so as to achieve fine energy management; the insulation monitoring module is adopted to monitor the ground insulation performance for the whole DC system so as to realize monitoring, judging and prevention of grounding fault. DC precision distribution unit can transmit data to dynamic environment monitoring system through digital communication to provide guarantee for post operation management.
YDB 037-2009 YDB 037-2009 Technical Requirement of 240V DC Power Supply System for Telecommunication
YD/T 939-2005 YD/T 939-2005 Power Distribution Cabinet for Transmission Equipment
YD/T 944-2007 YD/T 944-2007 Technical Specification and Testing Methods for Surge Protection of Power Supply for Communications
Composition of HVDC precision distribution unit
Composition of BCM201 precision power distribution unit
A precision array cabinet provides safe and reliable power supply to server appliance of data center energy terminal, and precision power distribution units provide high-precision measurement data for data center energy monitoring system. As a result, power quality data are reflected in real-time through human-computer interface. Moreover, such data are uploaded to background dynamic environment monitoring system through digital communication, realizing real-time monitoring to the whole power distribution system. With the continuous development of IT technology, the reliability and meticulous management requirements of data centers have been gradually improved. Large scale and high-density power consumption has become the trend of data center.
Characteristics of BCM201 precision power distribution unit
Conduct real-time monitoring to switch status of each circuit through BCM201-S module, display real-time status of switch such as closed, open, alarm and not enable.
Real-time monitoring basic data of incoming circuits including voltage, current, power, power factor, frequency and energy.
Real-time monitoring basic electrical data of each feeder circuit including voltage, current and power.
Real-time display of alarm information including alarm time and alarm value, quickly guide the operation and maintenance personnel to handle the problems.
Check alarm records for off-limit electrical parameters and display historical alarm information. Record down alarm electrical parameters, alarm types and alarm start time in details. The status of the running line in alarm time can be traced by querying historical events.
Monitor real-time status of energy consumption and alarm for each circuit so as to facilitate user’s operation and analysis. Adopt 7 inch human-machine interface on site for convenient interaction operation. Provide Ethernet port to be connected with upper level monitoring system.
Configuration schemeDC 48V configuration scheme
One BCM201-M1 module is equipped in DC incoming line, and one BCM201-S module is equipped in outgoing circuit to realize monitoring electrical parameters including voltage, current, active power, energy, extreme value and demand for each circuit of incoming and outgoing lines.
One BCM201-M1 module is equipped in DC incoming line, and one BCM201-S module is equipped in outgoing line to realize monitoring of electrical parameters including voltage, current, active power, energy, extreme values and demand for each circuit of incoming and outgoing lines. Meanwhile, BCM201-N module is equipped to realize measurement of voltage between isolation bus and ground as well as insulation resistance.
Parameters of components
Feature☑ 7 inch human-machine interface
Function☑ Display data of incoming circuits and feeder circuits, record fault information.
Incoming line monitoring module
Feature☑ Two RS485 communication ports, Ethernet port optional.
Function☑ measure the electrical parameters of two incoming lines, including voltage, current, power, frequency, energy, power quality, extreme value, zero-earth voltage and temperature.
Feeder monitoring module
Feature☑ Equipped with two bus interface which is used to extend this module.。
Function☑Measure electrical parameters of 30 single-phase circuits including voltage, current, power, frequency, energy, demand, extreme value and harmonics.
Insulation monitoring module
Feature☑ Send out alarm when positive or negative bus resistance is lower than alarm threshold value, and start branch inspection function, measure positive and negative ground insulation resistance of branch
Function☑ Measure positive and negative bus ground resistance
Switch monitoring module
Feature☑ 24V active wet contact input
Function☑ Monitor the closed and open status of 60 switches at the same time