A Method for Power Electronic Transformer to Reduce Voltage Unbalance of Distribution Network
A technology of voltage imbalance and power electronics, which is applied in the direction of eliminating/reducing asymmetry in multi-phase networks and reducing the asymmetry of multi-phase networks, and can solve problems such as poor reliability, high commutation costs, and unsatisfactory actual results.
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[0061] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
[0062] The method of using power electronic transformers to reduce the voltage unbalance of power distribution network proposed by the present invention is aimed at the AC-DC hybrid power distribution network formed based on power electronic transformers, in which the DC network can provide energy support for the AC network, considering the power electronics For the controllability of the transformer port, an optimized mathematical model is established on this basis, and the optimal calculation is carried out with the minimum of the square sum of the negative sequence voltage and zero sequence voltage of each node of the AC network as the objective function, so that the port control value of the power electronic transformer can be solved . The flow chart of the power electronic transformer of the present invention to reduce the voltage unbalance degree ...
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