EMC prediction model of a single wire transmission line crossing a circular aperture in a planar screen

In order to meet the demand of power supply, the construction of transmission line projects is constantly advancing, and the level of cost control is constantly improving, which puts forward higher requirements for the accuracy of cost prediction. This paper proposes an intelligent cost prediction model based on least squares support vector machine (LSSVM) optimized by particle swarm optimization (PSO). Originally extracting natural, technological, and economic indexes from the perspective of cost composition, principal component analysis (PCA) is used to reduce the dimension of indexes. And PSO is innovatively introduced to optimize the parameters of LSSVM model to obtain the optimal parameters. The obtained principal component data are imported into empirical parameter LSSVM prediction model and the optimized parameter PSO-LSSVM prediction model, respectively, for modeling and prediction, and then comparing the prediction results to analyze the effect of model optimization. The results show that the absolute deviation of the optimized parameter prediction model is less than 9%. And the prediction accuracy of the optimized parameter prediction model is better than that of the empirical parameter model, which can provide a reliable basis for investment decision-making of transmission line projects.

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Dynamic analysis of the transmission line crossing “Lago de Maracaibo”

Journal of Wind Engineering and Industrial Aerodynamics ◽

10.1016/s0167-6105(98)00089-0 ◽

1998 ◽

Vol 74-76 ◽

pp. 977-986 ◽

Cited By ~ 16

Author(s):

G Diana ◽

S Bruni ◽

F Cheli ◽

F Fossati ◽

A Manenti

Keyword(s):

Dynamic Analysis ◽

Transmission Line ◽

Line Crossing

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A prediction model for the natural gas hydrate formation pressure into transmission line

Petroleum Science and Technology ◽

10.1080/10916466.2016.1170842 ◽

2016 ◽

Vol 34 (9) ◽

pp. 824-831 ◽

Cited By ~ 2

Author(s):

Aijaz Abbasi ◽

Fakhruldin Mohd Hashim

Keyword(s):

Natural Gas ◽

Prediction Model ◽

Transmission Line ◽

Gas Hydrate ◽

Hydrate Formation ◽

Formation Pressure ◽

Natural Gas Hydrate ◽

Gas Hydrate Formation

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Reliability Study of Important Cross-Over Transmission Line System Based on Series System

Journal of Physics Conference Series ◽

10.1088/1742-6596/2137/1/012028 ◽

2021 ◽

Vol 2137 (1) ◽

pp. 012028

Author(s):

Dengjie Zhu ◽

Yongli Liao ◽

Hao Li ◽

Jie Tang ◽

Zenghao Huang ◽

...

Keyword(s):

Transmission Line ◽

Transmission Lines ◽

Calculation Method ◽

Reliability Index ◽

Force Transmission ◽

Line System ◽

Reliability Calculation ◽

Safety And Reliability ◽

The Cross ◽

Line Crossing

Abstract Transmission lines inevitably cross railroads, highways, and other facilities, and in order to ensure the safety and reliability of the cross-crossing section, the influence of various random factors on important cross-crossing transmission lines needs to be fully considered. In this paper, the transmission line crossing section is treated as a tandem system according to the force transmission route, and the reliability calculation method of the cross-crossing transmission line system based on the tandem system is proposed. The reliability calculation method of each component and the reliability calculation method of the tandem system are given. Finally, an example of the reliability calculation of a 220kV cross-crossing transmission line system is given, and the results show that the cross-crossing section has the highest reliability of tower FSJ404, with a reliability index of 8.61, the second highest reliability of insulators, with a reliability index of 7.22, and the lowest reliability of tower FSJ302, with a reliability index of 4.28. The failure probability of the cross-crossing section is 0.000009245, and the reliability index is 4.28.

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