A new site selection method applied to Synchronous condenser's suppressing transient over-voltage at the sending end of new energy resources

The transient over-voltage will occur in the wind farm near the DC system after commutation failure. In order to reduce the transient over-voltage of wind power plant after the accident of off - grid, improve the stability of the system. This paper mainly studies the placement of the Synchronous condenser in the wind power station. Firstly, the advantages of the Synchronous condenser are analyzed theoretically, and the operation characteristics of the Synchronous condenser under the fault of the DC system are analyzed in detail. Secondly, based on the transient over-voltage area method, a transient over-voltage degree index is proposed, and this index is used as the optimal placement method. Finally, the proposed transient over-voltage index was verified in the PSD-BPA model. The results show that the index is correct and effective in determining the placement point of the Synchronous condenser in the new energy supply.