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A stochastic model of wind farm is built in the paper, and the influence of wind power on voltage and line power flow of distribution network is analyzed. Wind power branch and parallel branch are defined and simulated, in addition, the influence of wind farm on the transmission lines' power is analyzed. And the mathematical model of conductor type selection taking into account the grid and wind power...
Unequally spaced method of grounding grid can economize metal material on the premise of ensuring the safety of equipment and personnel. A new optimization formula of grounding grid buried in uniform soil is presented in this paper. An analysis of grid conductor spacing of unequally spaced grounding grid was done. Serial number was given to each conductor as a specific numbering. A conversion formula...
The evaluation of electromagnetic transients in overhead power lines due to nearby lightning return strokes requires accurate models for the calculation of both the incident lightning electromagnetic pulse (LEMP) and the effects of coupling of this field to the overhead lines. Meanwhile, the influence of ground resistivity and the number of line conductors should be considered on analyzing the distribution...
As the rapid development of EHV/UHV Power System towards high capacity and long distance, lightning fault has become the chief factor that affects the safe operation of transmission lines. In-depth research on the nature of transmission lines lightning accidents and precise evaluation of the lightning overvoltage performance of transmission line are extremely significant. In this paper, the lightning...
To reduce the level of noise of the transmission line, JL/G1A-500/35DZ low noise conductor is designed in this paper. Its structural parameters, such as protrudent height, protrudent angle and other parameters, are optimized by wind tunnel test and electric test. The preforming and synchronized tightening module device is designed. JL/G1A-500/35DZ low noise conductor is produced by this device, which...
Galloping is a major impact on the design of overhead transmission lines and has caused various kinds of structural damage. With rapid development of construction content and scale for China grid and with frequent appearance for worse severe weather in recent years, galloping accidents of iced conductors are becoming more frequent in China, which has caused severe economic losses and social impacts...
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