Probabilistic load flow calculation method and system for electric power system

Abstract

The invention discloses a probabilistic load flow calculation method for an electric power system. The method comprises the following steps that: firstly, obtaining source load data and correspondingelectric power system topological structure data as load flow samples, and utilizing an SDAE (Stacked Denoising Autoencoder) load flow model to calculate the above load flow sample to carry out calculation to obtain a corresponding load flow result so as to carry out statistical analysis to obtain a probabilistic load flow calculation result. Since the SDAE load flow model is obtained in a way that SDAE model training is carried out in advance according to the target source load data and the corresponding electric power system topological structure data, the SDAE model can effectively extracthigh-dimensional nonlinear characteristics in the load flow sample by virtue of a deep stacking structure and a coding and decoding process so as to obtain a corresponding load flow result, and therefore, the calculation accuracy, speed and cost of the probabilistic load flow result can be comprehensively improved. The invention also provides a probabilistic load flow calculation system for the electric power system, and also can realize the above technical effects.

Description

technical field [0001] The present invention relates to the field of electric power system and its automation, and more specifically, relates to a method and system for calculating the probability flow of electric power system. Background technique [0002] With the continuous development of the global economy, the energy crisis and environmental pollution are becoming increasingly serious, and the development of new energy power generation has become an inevitable trend. However, new energy is random and intermittent, and its large-scale access brings more uncertainty to the power system. The growing uncertainty has had an important impact on the planning, scheduling, inspection, marketing and other production links of power grids at the provincial, city, and county levels. Probabilistic power flow can take into account various uncertain factors in the power system, and it is an important tool for accurately analyzing power systems. However, the probabilistic power flow n...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method and system for calculating the probability power flow of a power system to solve the problem of how to balance the calculation accuracy, speed and cost in the calculation process of the probability power flow

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