数据中心超前功率因数负载对发电机组的影响

Impact of Leading Power Factor Load on Generator Set in Data Center

数据中心的备用发电机组带超 前功率因数负载的能力很低，而现代IT设备是典型的超前功率因数负载，产生大量超前无功功率，可能导致发电机组运行不稳甚至关机，本文分析IT设备产生超前无功功率的根源，详细解读发电机容量曲线，说明发电机吸收超前无功功率极限，提出解决发电机运行不稳问题的策略和解决方案。

The leading power factor loading capability ofthe standby generator set in data center is very low. Howevermodern IT equipment is a typical leading power factor load which results in a lot of leading reactive power and thus may lead to the generator instability or even shut down.This paper analyses the sources of the leading reactive power fromIT equipment, explains the capability curve and the input reactive power limit of the generatorin derail, and puts forward astrategy to resolve the problem of generator instabihty.