The present disclosure belongs to the technical field of urban
power grid safety control, and particularly relates to a source-load-storage modeling method, a
power grid voltage control method and
system. The method comprises: carrying out fine modeling of photovoltaic,
energy storage and type-specific load, collecting equipment operation state data and identifying parameters; building a double-layer control architecture of centralized coordination-
distributed collaboration, deploying centralized coordinators and distributed collaborators and defining functions; under the control architecture, measuring power distribution
network topology, source and load real-time and historical data, and performing dynamic cluster division; based on historical optimal solution
database initialization, using ADMM distributed optimization
algorithm to calculate cluster total power adjustment of each cluster; based on cluster total power adjustment,
voltage deviation factor and resource margin factor, combining the model and
model parameters to perform power distribution of photovoltaic reactive power adjustment and
energy storage active power adjustment on the equipment connected to the node. Due to fine modeling, the
voltage control is provided with a basis, and the accuracy and reliability of the control can be improved.