Data center high reliability power supply system project
Project overview
A dual-bus 2N redundant power supply system is built for the data center in accordance with Tier IV standards, covering the full link of medium-voltage incoming lines, transformers, low-voltage distribution cabinets, UPS, precision column cabinets, and diesel generator sets, as well as supporting energy consumption management systems.
Indonesia fit
Transform the data center power supply from "equipment list procurement" to Tier IV capacity, redundancy, testing and operation and maintenance delivery, solving the problem of unclear interfaces between UPS, line cabinets, diesel engines, and harmonic control; the plan takes into account Jakarta's mains power fluctuations, high-density load in the computer room, and local construction capacity differences, and provides FAT/SAT, load drills, and on-site technical support.
Professional configuration and standards
Configure medium voltage incoming lines, transformers, low voltage cabinets, UPS, PDU/line cabinets and generators according to 2N dual bus architecture, refer to IEC 62040 UPS, IEC 61439, IEC 60076, IEC 60947 and Uptime/Tier IV Operating principles; key equipment has completed insulation, withstand voltage, temperature rise, harmonics, parallel operation, step load, diesel engine load and bypass switching tests, and THDv is controlled within 3%.
Key specification comparison table
| Configuration items | common practice | Optimized delivery specifications and value |
|---|---|---|
| Redundancy level | N or N+1 local redundancy | 2N double busbar, maintenance of either power link does not affect IT load |
| UPS configuration | Stand-alone UPS, difficult to expand capacity | Modular UPS, hot-swappable power module, supports online expansion |
| Acceptance testing | Single device power-on acceptance | FAT+SAT+on-load switching+fault drill, covering the end-to-end power supply link |
Delivery challenges and solutions
a.Challenge: The stability of the local mains power is poor and the harmonic pollution of the server load is serious, which can easily cause equipment downtime.
Solution: An active power filter is configured to accurately control harmonics, and the harmonic distortion rate is controlled within 3%; the dual-bus redundant architecture ensures zero impact from a single point of failure.
b.Challenge: The project is the renovation of existing computer rooms, and the construction cannot affect the operation of existing online services.
Solution: Adopting a modular hot-swappable design, staggered construction at night ensures zero business interruption throughout the process.
c.Challenge: The local area lacks experience in power distribution construction of high-level data centers, and the process standards are difficult to meet.
Solution: Senior data center power distribution engineers were dispatched to provide on-site guidance, fully control the construction process, and pass the Tier IV certification assessment in one go.
Project results
The power supply reliability reaches 99.999%, and the annual downtime is less than 5 minutes; the system PUE is reduced to 1.28, and the annual electricity bill of a thousand racks is saved by more than 1.5 million yuan.