High and low pressure side power load modelling approach based on single side sampling

The invention provides a method for modeling the power load of high and low sides based on the single-side sampling. The method comprises the process steps of (1) installing a measuring device on one side of the main transformer of a corresponding load transformer station; (2) acquiring the corresponding electrical quantity to be converted into the data format required for the further analysis calculation; (3) processing on-line or off-line data and carrying out the model parameter identification to obtain the load model parameters; (4) converting by combining the easily-acquired other operation parameters of the power system to obtain the load model and the parameters on the other side; and (5) finally obtaining the load models on the two sides. The method has the advantages that under the condition of the model same structure, the load model on the other side can be obtained simply by acquiring the electrical quantity (disturbance data) on one side of the main transformer and appropriately adjusting a part