Method for analyzing loss reduction potential of grids of Gansu Province

Abstract

The invention discloses a method for analyzing loss reduction potential of grids of Gansu Province. The method comprises the steps as follows: influence factors of loss of the grids of the Gansu Province are analyzed, and the loss reduction potential of a single influence factor in the influence factors of the loss of the grids of the Gansu Province is analyzed as well; on the basis of the analyzed loss value of the grids of the Gansu Province, the loss reduction rates of measures to single influence factors are calculated respectively; on the basis of the calculated loss reduction rates, the influence factors of the loss of the grids of the Gansu Province are analyzed with variable-weight grey relational analysis method, and the grey correlation degree of a single influence factor to the loss of the grids of the Gansu Province is determined; and according to the determined grey correlation degree, the weight is determined, a comprehensive loss reduction rate formula is acquired with a weighting method, and the loss reduction potential of the grids of the Gansu Province is obtained. According to the method for analyzing the loss reduction potential of the grids of the Gansu Province, defects of large loss of the transmission grid, poor economic benefits, high production cost and the like in the prior art can be overcome, so that the advantages of small loss of the transmission grid, good economic benefits and low production cost are realized.

Description

technical field [0001] The invention relates to the technical field of power system energy saving, in particular to a method for analyzing the loss reduction potential of Gansu power grid. Background technique [0002] Gansu Power Grid is located in the center of the Northwest Power Grid, extending a long and narrow area. The distance from the northwest to the southeast of the Gansu Power Grid exceeds 1,300 kilometers. Due to the special geographical location of Gansu Power Grid, frequent large-scale power exchange must be carried out through Gansu Power Grid, which causes additional transmission loss to Gansu Power Grid. However, Gansu Power Grid itself has a large-scale wind power connection. The wind power is far away from the load center and cannot be absorbed locally. It needs to be sent over long distances, which also increases the active power loss on the transmission line. In addition, there will be an electromagnetic ring network composed of 750kV and 330kV voltage...

AI Technical Summary

Problems solved by technology

[0004] At present, the analysis of loss reduction in various parts of Gansu power grid has been studied and partially applied, but the research purposes are mainly focused on the analysis of loss reduction for a single factor, such as increasing the transmission voltage level to reduce the loss of transmission lines. Active power loss, the use of on-load tap changer transformers to reduce the active power loss of transformers, and optimization of the grid structure of the power grid to reduce losses caused by power circulation, etc., but there is a lack of research on the analysis method for the overall loss reduction potential of Gansu power grid

[0005] In the process of realizing the present invention, the inventor found that there are at least defects in the prior art such as large transmission network loss, poor economic benefit and high production cost

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