Enlightenment from Application of Conventional DC Online Power Flow Reversal for New Power Systems
High voltage direct current(HVDC)transmission system is the main body of China's large-scale energy resource optimal allocation.The existing conventional DC power flow reversal is based on the voltage polarity reversal in the DC blocking mode,which is difficult to meet the needs of cross-regional flexible adjustment sharing and transient stability support for the new power system with a high proportion of renewable energy.Combined with the application experience of conventional DC flexible regulation abroad,a new online power flow reversal technology for conventional DC is proposed to meet the demand of domestic cross-regional asynchronous sharing,which can significantly improve the flexible regulation ability of the conventional DC.Based on the standard two-region asynchronous-interconnection system and the southern region extreme scenario,the effectiveness of the proposed online power flow reversal control is verified.The proposed method is of great significance for the construction of DC asynchronous-interconnection cross-regional sharing system.
high voltage direct current(HVDC)cross-regional sharinghigh proportion of renewable energypower flow reversalflexible interconnection
万方数据
维普
