Distribution transformer selection method and apparatus based on equipment full-life-circle minimum charge

Abstract

Embodiments of the invention disclose distribution transformer selection method and apparatus based on equipment full-life-circle minimum charge, and aim to solve the technical problems of relatively extensive property and shortcomings in the aspects of scientificity and reasonability of the existing distribution transformer selection method. The distribution transformer selection method based on the equipment full-life-circle minimum charge disclosed in the embodiment comprises the steps of S1, obtaining preset electric quantity data recorded in each hour of the distribution transformer, and calculating a coefficient of fluctuation of the distribution transformer through a first formula and a second formula to obtain coefficients of fluctuation of the distribution transformer in different power supply load features; S2, obtaining data of the maximum load rate and the average load rate of the distribution transformer, and obtaining information when the maximum load rate of the distribution transformer is equal to two times of the average load rate of the distribution transformer; and S3, obtaining the minimum value of the total charge and obtaining the distribution transformer corresponding to the minimum value according to the coefficients of fluctuation of the distribution transformer in different power supply load features and the information when the maximum load rate of the distribution transformer is equal to two times of the average load rate, through a calculation model formula of the total charge of the distribution transformer.

Description

technical field [0001] The invention relates to the field of distribution transformer selection, in particular to a distribution transformer selection method and device based on the lowest cost in the entire life cycle of equipment. Background technique [0002] When the final load forecast of the power supply station area is completed, the existing distribution transformer selection method: the transformer capacity is selected according to the predicted load value, and it is generally required to avoid heavy and overloading of the distribution transformer, and the load rate is usually controlled at 60%-80% , that is, the transformer capacity is 125%-167% of the predicted load; when choosing a transformer model, choose SH15 or S13 for energy-saving products, and choose the lowest price transformer model with the same capacity for low cost. [0003] The existing distribution transformer selection methods are relatively extensive and lack depth in terms of scientificity and ra...

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Problems solved by technology

[0004] The embodiment of the present invention provides a distribution transformer selection method and device based on the lowest cost in the entire life cycle of the equipment, which solves the technical problems that the existing distribution transformer selection method is relatively extensive and insufficient in depth in terms of scientificity and rationality

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