The Study And Checkout Of The Load Bearing Characteristic Of The Modern City

The thesis studies the electric load bearing characteristic of the city and load model which applies to the analysis of the voltage stability. It introduces the phenomenon and mechanism of the voltage stability, and the load modeling in the field of voltage stability. It points out that the load model in the low voltage is very important for us to analyse the problem of the voltage stability. It summarizes the present status of the study of modern load bearing characteristic and gives the way to analyse the voltage collapse by the electric circuit. By the investigation of the load compositions of the city, it analyse the load bearing characteristic of the load compositions which harm the voltage stability of the power system. By the model and parameter identification of the datas from the transformer substation, model of the static voltage and the reactive power is obtained. It also suggests the way to achieve the curve of the load bearing characteristic in the low voltage.