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'<p><span style="color: rgb(102, 102, 102); font-family: "Lantinghei SC", "Open Sans", Arial, "Hiragino Sans GB", "Microsoft YaHei", STHeiti, "WenQuanYi Micro Hei", SimSun, sans-serif; font-size: 13px;">集中供电通常用于UPS或HVDC。这种集中系统的优点是可以实现资源共享，从而降低成本。然而，它的缺点是，如果系统出现故障，影响范围会很大。</span><font color="#666666" face="Lantinghei SC, Open Sans, Arial, Hiragino Sans GB, Microsoft YaHei, STHeiti, WenQuanYi Micro Hei, SimSun, sans-serif"><span style="font-size: 13px;">杭州亿屯电子是专业的<a href="http://www.hzyitun.com/" target="_blank">UPS不间断电源系统</a>厂家，可为您提供山克、山特、艾默生等品牌的不间断电源。欢迎您的咨询。13750836693（龚）</span></font></p><p><img title="不间断电源系统" alt="不间断电源系统" src="http://www.hzyitun.com/uploadfile/202307/dcac2e4f28d09b7.png"><br style="color: rgb(102, 102, 102); font-family: "Lantinghei SC", "Open Sans", Arial, "Hiragino Sans GB", "Microsoft YaHei", STHeiti, "WenQuanYi Micro Hei", SimSun, sans-serif; font-size: 13px;"><span style="color: rgb(102, 102, 102); font-family: "Lantinghei SC", "Open Sans", Arial, "Hiragino Sans GB", "Microsoft YaHei", STHeiti, "WenQuanYi Micro Hei", SimSun, sans-serif; font-size: 13px;">UPS还提供小型分布式供电解决方案，但与集中式大型UPS系统相比，分布式小型机数量多，故障点多，成本增加。因此，分布式UPS系统通常不用于大型和中型数据中心。</span></p><p><span style="color: rgb(102, 102, 102); font-family: "Lantinghei SC", "Open Sans", Arial, "Hiragino Sans GB", "Microsoft YaHei", STHeiti, "WenQuanYi Micro Hei", SimSun, sans-serif; font-size: 13px;"><br></span><br style="color: rgb(102, 102, 102); font-family: "Lantinghei SC", "Open Sans", Arial, "Hiragino Sans GB", "Microsoft YaHei", STHeiti, "WenQuanYi Micro Hei", SimSun, sans-serif; font-size: 13px;"><span style="color: rgb(102, 102, 102); font-family: "Lantinghei SC", "Open Sans", Arial, "Hiragino Sans GB", "Microsoft YaHei", STHeiti, "WenQuanYi Micro Hei", SimSun, sans-serif; font-size: 13px;">虽然面对上述问题，但分布式不间断电源系统的研究和探索从未中断。谷歌和Facebook正在研究该系统在IDC数据中心的应用。</span><span style="color: rgb(102, 102, 102); font-family: "Lantinghei SC", "Open Sans", Arial, "Hiragino Sans GB", "Microsoft YaHei", STHeiti, "WenQuanYi Micro Hei", SimSun, sans-serif; font-size: 13px;">谷歌是第一家开发和定制服务器的互联网公司，第一次放弃了集中的UPS电源计划，而是将电池分散到每台服务器的DC12V输出端。当市政电源正常时，电源会转换成DC12V，为服务器主板供电，同时为电池提供浮动充电。</span></p><p><span style="color: rgb(102, 102, 102); font-family: "Lantinghei SC", "Open Sans", Arial, "Hiragino Sans GB", "Microsoft YaHei", STHeiti, "WenQuanYi Micro Hei", SimSun, sans-serif; font-size: 13px;"><br></span></p><p><span style="color: rgb(102, 102, 102); font-family: "Lantinghei SC", "Open Sans", Arial, "Hiragino Sans GB", "Microsoft YaHei", STHeiti, "WenQuanYi Micro Hei", SimSun, sans-serif; font-size: 13px;">市政电源停电后，连接在DC12V母线上的电池将继续为主板供电，直到柴油发电机启动并恢复交流电源供电。谷歌早期使用铅酸电池供电，但由于服务器内部温度过高，铅酸电池的故障率较高，所以后期使用了简单的锂电池。</span></p><p><span style="color: rgb(102, 102, 102); font-family: "Lantinghei SC", "Open Sans", Arial, "Hiragino Sans GB", "Microsoft YaHei", STHeiti, "WenQuanYi Micro Hei", SimSun, sans-serif; font-size: 13px;"><br></span><br style="color: rgb(102, 102, 102); font-family: "Lantinghei SC", "Open Sans", Arial, "Hiragino Sans GB", "Microsoft YaHei", STHeiti, "WenQuanYi Micro Hei", SimSun, sans-serif; font-size: 13px;"><span style="color: rgb(102, 102, 102); font-family: "Lantinghei SC", "Open Sans", Arial, "Hiragino Sans GB", "Microsoft YaHei", STHeiti, "WenQuanYi Micro Hei", SimSun, sans-serif; font-size: 13px;">Facebook自建的数据中心供电系统采用DC48V离线备用方案。每个6kW的机柜都配有一个铅酸蓄电池柜，输出电压为DC48V。AC277V和DC48V的双重输入支持服务器电源，一般情况下主要使用市电。当市电中断时，电池为服务器提供DC48V电力。该电池的备份时间为45秒。该系统的效率与240V 与DC12V分布式系统相当的HVDC离线方案。</span></p><p><span style="color: rgb(102, 102, 102); font-family: "Lantinghei SC", "Open Sans", Arial, "Hiragino Sans GB", "Microsoft YaHei", STHeiti, "WenQuanYi Micro Hei", SimSun, sans-serif; font-size: 13px;"><br></span><br style="color: rgb(102, 102, 102); font-family: "Lantinghei SC", "Open Sans", Arial, "Hiragino Sans GB", "Microsoft YaHei", STHeiti, "WenQuanYi Micro Hei", SimSun, sans-serif; font-size: 13px;"><span style="color: rgb(102, 102, 102); font-family: "Lantinghei SC", "Open Sans", Arial, "Hiragino Sans GB", "Microsoft YaHei", STHeiti, "WenQuanYi Micro Hei", SimSun, sans-serif; font-size: 13px;">近年来，我国出现了一种新型的分布式DC240V电源设备，并采用了离线方案，因为行业越来越重视数据中心的能耗。当市电正常时，设备直接输出市电，而当停电时，内部锂电池提供DC240V输出。该方案的优点是IT设备不需要定制，只需要与DC240V电源兼容即可。但缺点是设备内部需要切换AC220V和DC240V，降低了系统的可靠性；与此同时，锂电池串联数量较多，个别电池的故障可能会根据实际系统而定。</span><br style="color: rgb(102, 102, 102); font-family: "Lantinghei SC", "Open Sans", Arial, "Hiragino Sans GB", "Microsoft YaHei", STHeiti, "WenQuanYi Micro Hei", SimSun, sans-serif; font-size: 13px;"></p>' |
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