Relationship between data center level and power type of diesel generator set

With the development of information technology, data demand is increasing day by day. Data center projects that are stored as data are wind and wind. As an important part of the data center, the diesel Generator power station project is critical in the data center grading. today we will focus on the relationship between the data center level and the power type of the diesel generator set .
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Different data applications require different levels of data centers. Both the international tier 942 standard and the China Data Center Communication Facility standard are graded according to the cask principle. Different levels of data centers need to be configured with corresponding power type diesel generator sets. Below we have listed the requirements for diesel generator sets in different data centers according to tier 942 standards and China data Center communication Facilities standards as follows:
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Currently the data center project is generally required to be a Class A or T3 data center, so we will focus on a-or T3-level data center Project Diesel Generator Set selection:

1selection of power type of diesel generator set

according to uptime in the T3 or T3 above the data Center for the diesel generator set power supply design requirements: T3 or T3 above the data center must be configured with a diesel generator set,The power supply of the diesel generator set is the main power source of the data center, which is designed for long-term continuous operation of the diesel generator set, which is more reliable power supply than the mains. Currently, the main use of electricity in the data center is a more economical choice, but the configuration of diesel generator set cannot be changed.

In the existing Operational data Center project, because the normal use of electricity, only in the case of mains power outage to start the diesel generator set, so some people think the data Center Configuration diesel Generator set for backup power, under normal circumstances, the diesel generator set used less than 50 hours, We can select the standby power generator set when configuring the diesel generator set. Special clarification is needed here:due to the importance of data stored in data centers at the T3 level or above, data centers need to be kept up and running even in major disasters such as earthquakes, sea tsunami, and war. And in many disasters, the mains can be destroyed for a long time can not provide power, then will rely on the diesel generator set for the entire data center to provide long-time stable power.Therefore, the design of the T3 or above data center project must be designed for the diesel generator set to continuous power or main power.

According to the definition of continuous power and main power in ISO8528 and GB2820, the continuous power unit can operate at 100% rated power, and the average load of the main power unit should be less than 70% per 24 hours during continuous operation. Therefore, in the same load demand, different generator set power type, the total power demand of the generator set will be different: the total power of the project generator set = Generator set continuous power or the total power of the project generator set = Generator set main power *70%. Example: T3 level or above the total power requirement of the data center project is 20MW, if the selection of continuous power diesel Generator set, the total power of the generator set must be greater than or equal to 20MW; if the main power diesel Generator set is selected, the total power of the generator set must be greater than or equal to 28.6MW.

2 design of total power of diesel Generator set
The core load for all data centers is it load, usually we first determine the load of it load in the data center, and then according to different design principles and experience to determine the PUE value and the concurrent use factor of this project. The data center designs the total power of the diesel generator set =it load * PUE * simultaneous use factor.

3Diesel Generator Set rated voltage selection
Because the power demand of the data center is big, small is 10MW, more dozens of even hundred MW. The design of diesel generator set will be the most economical choice in project design. In China through the 3C certification of the low-voltage busbar maximum capacity of 6300A, low-voltage unit after the machine can not meet the requirements of high power. Therefore, the high-pressure diesel generator set was introduced. The rated voltage of the medium-high voltage generator set is usually selected according to the mains transformer voltage. There are generally 6.6KV and 10.5KV two kinds. By increasing the rated voltage of the generator set, the current of the machine Busbar is greatly reduced, and the design of the high power demand is possible.

Of course, some projects are designed to use the diesel generator set and transformer one by one, the design of the reciprocal conversion. At this time, we usually choose low-pressure diesel generator sets. This design is more reliable than the high-pressure system design, but the initial investment in low-voltage cabinets and low-voltage cables will increase significantly.

How to choose the diesel generator set voltage will also be based on the needs of the owners and the application of the project to consider, select the most suitable for the economy and reliability of the diesel generator set.
In the Data Center Project Diesel Generator set selection We still have a lot to consider, here is no longer one by one to repeat. I hope the above instructions can help you in the data Center project of diesel Generator set selection. We also welcome your questions and suggestions for this note, and your feedback is the driving force for our progress.

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Relationship between data center level and power type of diesel generator set