Distributed power supply acceptance capability uncertainty analysis method and device, and medium

Abstract

The invention provides a distributed power supply acceptance capability uncertainty analysis method and device, and a medium. The mapping relation between the multivariate uncertainty factors and the voltage sensitivity in the power distribution network of the distributed power supply is quantified by adopting interval mathematics and affine mathematics, so that the method has the advantages that upper and lower bounds of uncertain variables of an interval method are easy to obtain, the model is simple, the applicability is high, the solving speed is high and the like; the method also has the advantages of the affine method in the aspect of tracking the correlation and coupling of multivariate uncertain variables; the affine three-phase voltage sensitivity equation based on the Jacobian matrix is deduced, and the random scene simulation method based on Monte Carlo is combined, so that the accuracy and rapidity of the acceptance capability analysis of the distributed power supply of the power distribution network are considered; and meanwhile, the possibility is provided for assisting distribution network planners to carry out on-line rapid analysis and comprehensive and accurate decision-making on the acceptance capability of the distributed power supply. Compared with an existing distributed power supply acceptance capability analysis method, the method has better performance effects and remarkable theoretical value and practical significance.

Description

technical field [0001] The present application relates to the field of distribution network planning, and in particular to a method, device and medium for analyzing the uncertainty of the receiving capacity of distributed power sources. Background technique [0002] Today's increasingly serious environmental pollution and energy crisis continue to promote the development and utilization of renewable energy such as solar energy and wind energy in countries around the world. Under this background, various renewable energy sources will be connected to power distribution in the form of distributed power sources on a large scale There is a certain intermittency in the distributed power supply, which will cause many problems in the safe operation of the distribution network, and pose a great challenge to the efficient acceptance and utilization of distributed power. [0003] At present, scholars at home and abroad have carried out many studies on the analysis methods of distribute...

AI Technical Summary

Problems solved by technology

However, the conservatism of the robust method is usually only aimed at the uncertainty of the distributed generation output and load demand, and it is difficult to quantify the potential uncertainty of the distribution network distributed generation configuration, so the analysis results obtained by the robust method are often biased. There is a certain deviation between optimism and true acceptance

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