Abstract: At present, the component-based method, the measurement-based method and other modeling methods require large amount of statistical data, so they are difficult to reflect the load time-varying characteristics, and have the disadvantages of slow speed and low accuracy of identification, etc. To solve these problems, this paper proposed the outlet-based synthesis load modeling method for substations. From the outlet of the substation, this method first established outlet load model, then constructed model for substation as a whole, and obtained outlet-synthesis load model including static load, dynamic load, distribution network and capacitance compensation. The simulation example results show that, compared with the measurement-based method, the identification speed and precision of this method has a larger increase, with a certain feasibility and practicability.

Key words: load modeling, outlet-synthesis load model, parameter identification