Power system load modeling method based on typical load group

The invention relates to a power system load modeling method based on a typical load group. The power system load modeling method comprises the steps of: 1) establishing a typical load group model: generating the typical load group model according to node load information; 2) and establishing a node load model: performing weighted aggregation to obtain node load model parameters according to parameters of the typical load group model and proportions of typical load groups, and establishing a node load model based thereon. Compared with the typical load parameters adopted in simulation at present, the power system load modeling method obtains load parameters of the node load model parameters by performing weighted aggregation on the typical load groups, thus the node active voltage response characteristics and reactive voltage response characteristics are closer to the actual measured situation.