Core Viewpoint - AIDC capital expenditure is experiencing rapid growth, driven by strong industry demand, with global tech giants expected to invest over 2 trillion RMB by 2025, maintaining a growth rate of over 50% to support generative AI model training, cloud computing expansion, and real-time data processing [1] Group 1: HVDC Demand and Power Supply - Increased power demand is expected to drive HVDC demand, as data centers globally adopt UPS for power assurance, with HVDC offering advantages such as efficiency, reliability, and low cost [1] - The integration of BBU and supercapacitors in power systems is anticipated to enhance power supply safety, especially with the rise in server power requirements [2] Group 2: Energy Quality and Renewable Energy - The demand for power quality equipment is likely to increase due to the growing reliance on renewable energy in data centers, necessitating precise reactive power and harmonic management [3] Group 3: Server Power Supply Market - The value per watt of server power supplies is expected to improve due to increased power density, with potential advancements including the replacement of silicon-based devices with SiC and GaN, and the adoption of liquid cooling methods [4] - The server power supply market is becoming more concentrated, with Taiwanese companies dominating, particularly Delta holding over 50% market share, while mainland firms like Megmeet are beginning to enter the supply chain [4]

证券研究报告 | 电力设备 | 2 0 2 5年 2 月 2 2 日 摘要 资料来源：方正证券研究所 2 Ø 电源：数据中心供配电由于其用电特殊性，电源价值量及冗余配置大幅提升，价值量大+技术持续迭代+敏感度不高。 • 机柜外：1）HVDC和UPS的对比：HVDC核心在效率和可靠性上有所升级，效率方面：拓扑结构比 UPS 简单，少半个变压器，成本更低，转化效率 更高，不过 UPS 升级后效率差异有所减小。可靠性方面：蓄电池挂载位置不同，HVDC 直流电流直接挂载在直流母线上，后端出问题时仍能顶上， 宕机率比 UPS 低。2）规模测算：按照UPS电源国内价格大约在0.6元/W（不含铅酸电池）；HVDC电源大多是集采所以价格更低，大约0.5元/W （整流器件和PSU的用量减少），国内27年远期规模测算在150亿左右； • 机柜内：非标+定制化需求更高，带来更多溢价。2024-2029 年 AI 服务器平均机架密度将从 40-100kW 增加至 350-500kW。以英伟达最新的主 流机架 GB200 NVL72为例，单机架120kW对应约198kW 服务器电源（单个模块功率为5.5kW，总共36 个模块），容量配 ...