Method for tracking and determining frequency change of power grid

Abstract

The present disclosure provides a method for tracking and determining a frequency change of a power grid, including following steps: acquiring, in real time, data displayed by a power meter on a power generation side of the power grid, and superimposing the data to obtain a total generated power (101); acquiring, in real time, data displayed by power meters on electricity consumption circuits of all energy-consuming devices in the power grid, and superimposing the data to obtain a total consumed load power (102); calculating a power difference P∑difference by using a following formula based on the total generated power and the total consumed load power: P∑difference = P∑generated power–P∑consumed power; constructing a power grid frequency change prediction model based on a relationship between the total consumed load power P∑consumed power and the power difference P∑difference (103); and determining whether a load change rate in the power grid frequency change prediction model fluctuates within ±2 Hz of a normal frequency range, and if the above condition is not met, adjusting a generated power or an consumed load power of the power grid (104) in advance to maintain stable operation of the power grid. Based on a frequency prediction result, the present disclosure makes an adjustment in advance to maintain the stable operation of the power grid, thereby enhancing stability and reliability of a power system. Drawing accompanying abstract: FIG. 1