Analysis and Research on Power Flow Entropy Index of Power System

In order to meet the optimization of power distribution throughout the country, China will build an UHV AC/DC hybrid power grid with UHV AC and DC backbone grids and coordinated development of power grids at all levels. This paper is based on the characteristics of the complex system of power system, and the entropy theory is applicable to analyze the nature of the orderliness of complex systems. The entropy index is applied to the evaluation system of power system operation status, and the existing entropy index is summarized and analyzed. The weighted power flow entropy weighted by the regional average load rate corrected by the mean squared coefficient is used as the mathematical representation of the self-organized criticality of the power system. Finally, a comparative analysis of the example results shows that the index can accurately and effectively reflect the degree of order distribution of the system power flow.