How Can I Determine Whether the Power Supply Status Is Abnormal?

<HUAWEI> display power
------------------------------------------------------------
 Slot    PowerID  Online   Mode   State       Power(W)
------------------------------------------------------------
 0       PWR1     Present  AC     Supply      150.00
 0       PWR2     Present  AC     NotSupply   150.00  

Run the display device command to view the power supply status. If the Status field displays Abnormal, the power supply status is abnormal. You can run the display trapbuffer command to check whether there are any power supply alarms.

<HUAWEI> display device
S5720-56C-PWR-EI-AC's Device status:
Slot Sub  Type                Online    Power      Register     Status   Role
-------------------------------------------------------------------------------
0    -    S5720-56C-EI        Present   PowerOn    Registered   Normal    Standby
     1    ES5D21X02S01        Present   PowerOn    Registered   Normal    NA
     PWR1 POWER               Present   PowerOn    Registered   Normal    NA
     PWR2 POWER               Present   PowerOn    Registered   Abnormal NA
     FAN1 FAN                 Present   PowerOn    Registered   Normal    NA  

Power supply alarms are as follows:

SRM_1.3.6.1.4.1.2011.5.25.129.2.1.9 hwEntityInvalid 67966     //The power module is not powered on or has no electronic label loaded.
SRM/3/POWERFAULT:OID [oid] Power is abnormal.( EntityPhysicalIndex=[INTEGER], BaseTrapSeverity=[INTEGER], BaseTrapProbableCause
=[INTEGER], BaseTrapEventType=[INTEGER], EntPhysicalContainedIn=[INTEGER], EntPhysicalName=[OCTET], RelativeResource="[OCTET]",
 ReasonDescription="[OCTET]")

ENTITYTRAP_1.3.6.1.4.1.2011.5.25.219.2.5.5 hwPowerInvalid    //The power module is abnormal.
Entitytrap/1/POWERINVALID(t):OID [oid] Power supply is unavailable for some reason.(Index=[INTEGER], EntityPhysicalIndex=[INTEGER],
PhysicalName=\"[OCTET]\", EntityTrapFaultID=[INTEGER])