Let's talk about the selection criteria of wind power generation transformer.
1, Capacity determination of wind power generation transformer:
1) Consider the long-term planning and staging development scale of the wind farm and determine the number and capacity of the main transformer.
2) According to the output characteristics of the wind power generation transformer, the wind power generation will not overload operation. The capacity of the main transformer can be selected that equal with wind farm.
2, Type determination of wind power generation transformer:
1) Voltage regulation mode:
According to the switching mode of transformer tap, there are two kinds of transformer voltage: no excitation voltage and load voltage. The main transformer of wind farm characteristics: wind power wind turbine, a step-up transformer. While the wind turbine is not power, to take power from the power grid. So main transformer should be chosen transformer fitted with OLTC.
2) Voltage and change ratio:
Due to the existence of line voltage electric equipment with power to drop, the transformer primary side by side is, for the wind farm equivalent to its rated voltage step-down transformer, should be equal to the rated voltage of electrical equipment. The two side of the transformer is equivalent to the power supply for the wind farm equivalent to boost, the rated voltage should be higher than the rated voltage of 5% of power network.
