Cloud-side collaborative power grid frequency online monitoring and analysis method and cloud-side collaborative power grid frequency online monitoring and analysis system

The invention discloses a cloud-side collaborative power grid frequency online monitoring analysis method and system, and the method comprises the steps: carrying out the efficient fitting analysis of data provided by a synchronous phasor data collection device based on a frequency fluctuation recognition model of a comprehensive modal parameter recognition method, and providing a data support for the evaluation and analysis of the power grid frequency; overall delay is effectively reduced through cloud edge cooperation, and the real-time requirement of online monitoring is met. By reasonably distributing computing resources of the cloud end and the edge end, the cost of the overall architecture is reduced, and the data reliability is improved; and through iteration of the model and the algorithm, the analysis speed and precision of real-time data are accelerated, and the practicability of the online monitoring system is improved. According to the online monitoring system, historical data can be analyzed and