transformers in parallel the analysis of operating conditions

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Transformer Manufacturertied to the operating conditions including the transformer voltage equal to the same group of transformer coupling

transformer short-circuit voltage, the transformer hope that the output current of the same phase.
A ratio equal (both voltages are equal)
The original winding of the transformer rated voltage must be equal to the rated voltage of the secondary winding shall the same. In this

way, the voltage difference between the transformer does not form a balanced current. The aim is to avoid the circulation of parallel

transformer loop. Circulation, leading to is Σp increases, reduced efficiency. Information from: www.tede.cn
2 groups of the same links
Join the group consensus to ensure that the secondary voltage of the phase-coherent. If Y/Y-12 Y/Δ-11 parallel has the same set ratio,

relative to potential equal to (the E2A = E2B), but the phase difference of 30 ° ΔE2 role in the \"loop\" circulation.
Three short-circuit voltage of each transformer are the same (equal impedance), the short-circuit voltages are equal, in order to load

according to the capacity of the transformers themselves pro rata, ranging from short-circuit voltage, often caused by the small capacity

of the transformer overload, and the capacity of the transformer lack of load, greatly affected the economic effects of parallel

operation.
Hope that the output current in phase with
Only thus can the whole parallel group can get the maximum output current installed capacity of the transformer can be fully applied.