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Research on Multi-period Voltage Coordinated Control Technology Supporting New Energy Dissipation of Regional Power Grid

The penetration rate of new energy in the current regional power grid is gradually increasing. New energy puts forward higher requirements for traditional reactive voltage control due to its high uncertainty and the strong coupling of active and reactive power at the low-voltage level. In order to support the new energy dissipation and meet the requirements of voltage security and stability, this paper proposes a multi-period voltage coordinated control method which takes into account the day-ahead and ultra-short-term prediction, which can give a optimization target plan under high uncertainty, and rolling optimization control in the day, and realize multi cycle voltage coordinated control to fully support the automatic control of reactive power and voltage in regional grid. The simulation in the actual power grid is implemented to prove the effectiveness of this method.