Deepen research on electric load modelling

Detailed procedures for the modelling of synthesis load of practical power network are presented; then based on the detailed investigation and statistics of load composition at 220 kV and 330 kV substations, the distribution of different kinds of load in domestic power grids are analyzed and the necessity of establishing the parameters of synthesis load model (SLM) suitable to actual power networks is pointed out; finally, the influence of SLM parameters on stability of interconnected power grids is researched. Research results show that it is crucially important for accurate analysis on power grid stability to choose appropriate load model and parameters.