Windows 10 中电源设置 GUID 中两个参数所需的信息

Question

Windows PowerPlan 设置了系统的多种行为，这些行为被枚举为单独的电源设置 GUID。例如

Power Setting GUID: 7bc4a2f9-d8fc-4469-b07b-33eb785aaca0  (System unattended sleep timeout)
      GUID Alias: UNATTENDSLEEP
      Minimum Possible Setting: 0x00000000
      Maximum Possible Setting: 0xffffffff
      Possible Settings increment: 0x00000001
      Possible Settings units: Seconds
    Current AC Power Setting Index: 0x00000000
    Current DC Power Setting Index: 0x00000078

我找不到任何关于‘当前交流电源设置指数’或‘当前直流电源设置指数’作用的文档。