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On July 2nd, 2017, Pole I of Binjin UHVDC failed to recover after two restart attempts, which impact both the sending-end and receiving-end system. First of all, the detailed process of restart function is presented and the impacts on frequency and voltage are analyzed. Secondly, the main impacts on both sending-end and receiving-end system are studied by replaying the failed recovery of Binjin UHVDC...
This paper studies the problem of the sub-synchronous oscillation, which caused by the interaction between VSC converter and non-series compensated weak grid. The model of VSC converter at grid side under small signal is constructed. Furthermore, eigenvalue analysis method is applied to analysis the model of oscillation modes, and by calculating damping ratio and correlation factors, the key parameters...
Along with the rapid development of AC-DC hybrid power system, Flexible AC transmission system (FACTS) and HVDC transmission system has been widely used in electric power system, which provides a new control technology and effective means for curbing large-scale wind turbine tripping in china in recent years. The wind turbine tripping scene after the AC/DC faults is analyzed, which shows that suppressing...
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