Site Selection and Capacity Determination of Photovoltaic Generation Based on Nodal Inertia Constrained

Aiming at the stochasticity of PV output power, and considering the influence of node critical inertia when system disturbance occurs, in this paper, a calculation method of PV power station siting capacity taking into account the node inertia constraints is proposed. Firstly, the primary embedding location of the PV plant is confirmed based on the results of the node critical inertia calculation when the disturbance occurs; Then, taking the minimum voltage deviation, the maximum total capacity of accessed PV and the minimum network loss as the planning objectives, the node voltage qualification rate as the main constraints to construct the calculation model. At the same time, the hierarchical analysis method is used to establish the optimal total objective function for the coordination of the three planning objectives and the particle swarm optimization (PSO) is used to solve the model. Taking the IEEE39 system as an example for simulation analysis, the results show that the network node voltage deviation and reduced by 26.9%, the total amount of renewable energy access is 707 MW and the node voltage qualification rate meets the planning requirements.