Huawei SUN2000-42KTL User Manual page 20

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SUN2000-(36KTL,42KTL)

User Manual

Working

Mode

Shutdown

Operating with Limited Power

It is normal that the inverter operates with limited power and the operating mode may be

caused by either of the following conditions.

Issue Draft A (2016-05-30)

Description



In standby or operating mode, the SUN2000 enters the shutdown mode

after detecting a fault or shutdown command.



In shutdown mode, the SUN2000 enters the standby mode after detecting

a startup command or that a fault is rectified.

If the sunlight is good and the PV array output power exceeds the maximum inverter

output power, the inverter does not trace the maximum power point of the PV array.

Instead, the inverter limits the PV array output power close to the maximum inverter

output power to reduce the peak PV array output power.

The inverter accepts the power scheduling from the power grid and limits the output

power to the range specified by the power grid. Power grid scheduling includes active

power derating and reactive power compensation. Active power derating means that the

power grid limits the maximum inverter output power. Reactive power compensation

refers to that the power grid instructs the inverter to generate certain capacitive or

sensitive reactive power to compensate the fixed reactive power value in the circuit. Note

that when the inverter delivers reactive power, the maximum apparent output power is

retained but the maximum active output power is affected.

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