Research on AVC Integrated Control Strategy of Power Grid Condenser Based on Hierarchical Access

In order to ensure the safe and stable operation of Qinghai power grid and Hainan UHVDC, it is necessary to study the adaptability of reactive power and voltage after connecting Qingyu HVDC, analyze the operation risk of Qinghai Power Grid after DC failure, and put forward corresponding reactive voltage recovery measures, This paper studies the integrated coordinated control strategy of large capacity condenser, distributed condenser and reactive power compensation device of DC substation near Qinghai Power Grid after Qinghai Henan DC connection, puts forward corresponding security and stability control strategy, and provides technical support and basis for the safe and stable operation of Qinghai Power Grid after Qinghai Henan DC connection.