Design method of ice-melting transformer stalls of DC ice-melting device based on graphic method

Abstract

The invention discloses a graphic method-based method for designing the stalls of an ice-melting transformer of a DC ice-melting device. The steps include: 1) determining the ice-melting demand voltage of each line in a substation; 2) drawing a two-dimensional map of the ice-melting demand voltage of each line 3) Extract the intersection section of the ice-melting demand voltage of each line in the two-dimensional plan; 4) Determine the gear position of the secondary side of the ice-melting transformer according to the intersection section of the ice-melting demand voltage of each line. The invention can simplify the design process of the ice-melting transformer stalls and reduce the number of stalls as much as possible, reduce the design and manufacturing costs of the ice-melting transformer, and has the advantages of simple design process, excellent design results, strong portability, small number of designed stalls, Realize the advantages of fast and convenient use.

Description

technical field [0001] The invention relates to the technical field of electrical engineering, in particular to a method for designing gear positions of an ice-melting transformer of a DC ice-melting device based on a graphical method. Background technique [0002] Ice and snow disasters occur frequently in southern China. Ice-covered power transmission lines are likely to cause disconnection and downturning, which seriously threatens the safe and stable operation of the power grid and the reliability of power supply. Especially in the catastrophic ice disaster in 2008, the freezing weather continued to hit East China, Central China and other regions of China, resulting in large-scale and long-term power outages in Hunan, Zhejiang, Jiangxi and other provinces, causing huge losses to the national economy and the production and life of the people. . For this reason, many domestic units have developed various types of ice-melting devices. Among them, the DC ice-melting device ...

AI Technical Summary

Problems solved by technology

More importantly, the selection of each gear corresponding to the secondary side voltage lacks overall planning, that is, generally only the needs of a certain line are considered without considering the needs of multiple lines, which often leads to the design of a large number of transformer gears and a lack of Adaptability to changes in line parameters, the design results are difficult to achieve optimal

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