Current requirements

Spanish and German Grid Codes require the installation supplies the maximum possible current during the fault maintenance and the voltage recovery period. This current delivery must verify that reactive current is above the minimum unitary values delimited by the lines in fig.7, for each grid code.

VOLTAGE (pu)

NORMAL OPERATION

NORMAL OPERATION

Fig. 7. Minimum admissible values of the reactive current: (a) O.P. 12.3; (b) O.P. 12.2; (c) E.ON Netz

Active current limits (in per unit values) according to the O.P. 12.3 are mathematically expressed in function of the unitary voltage values (V) as:

VOLTAGE (pu)

NORMAL OPERATION

1-AV Active generation

ACTIVE CURRENT

Active consumption

1-AV Active generation

Fig. 8. Active current limits in unitary values during the voltage dip

Active current values according to the O.P. 12.2 must be within the area showed in fig.8. Limits of the active current described in fig.8 are mathematically expressed in unitary values as:

where Po is the unitary active power supplied by the installation prior to the disturbance.

Renewable Energy Eco Friendly

Renewable Energy Eco Friendly

Renewable energy is energy that is generated from sunlight, rain, tides, geothermal heat and wind. These sources are naturally and constantly replenished, which is why they are deemed as renewable.

Get My Free Ebook


Post a comment