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

A technology of transformer stalls and DC ice melting, applied in the field of electrical engineering, can solve problems such as lack of adaptability to line parameter changes, difficulty in achieving optimal design results, and too many transformer stalls, so as to achieve excellent design results and avoid repetition The effect of trial and error iterations and a small number of gears

Active Publication Date: 2017-08-25
STATE GRID HUNAN ELECTRIC POWER +2
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  • Description
  • Claims
  • Application Information

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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

Method used

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

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Embodiment Construction

[0028] Such as figure 2 As shown, in this embodiment, the steps of the method for designing the stalls of the ice-melting transformer of the DC ice-melting device based on the graphical method include:

[0029] 1) Determine the ice-melting demand voltage of each line in the substation;

[0030] 2) Draw a two-dimensional plane diagram of the ice-melting demand voltage of each line;

[0031] 3) Extract the intersection section of the ice-melting demand voltage of each line in the two-dimensional plan;

[0032] 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.

[0033] In the present embodiment, the detailed steps of step 1) include:

[0034] 1.1) Determine the maximum allowable ice-melting current I of each line in the substation max and the minimum melting current I min ;

[0035] 1.2) According to the wiring mode of the transmission line during DC ice ...

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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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
CPCG06F30/20G06F30/392
Inventor 陆佳政黄清军李波谭艳军朱思国周秀冬朱远
Owner STATE GRID HUNAN ELECTRIC POWER
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