Method for lightning protection measure simulation of HUV transformer

Abstract

The invention discloses a method for lightning protection measure simulation of an HUV (Ultra High Voltage) transformer. The method comprises the following steps of: 1, building an HUV transformer simulation model, a lightning simulation model and a lightning protection device simulation model; 2, changing factors influencing the lightning wave overvoltage, and transmitting lightning waves generated by acting the lightning simulation model onto a power transmission line to the HUV transformer simulation model along the power transmission line to produce overvoltage; and 3, installing the lightning protection device simulation model in the HUV transformer simulation model, transmitting the lightning waves generated by acting the lightning simulation model onto the power transmission line to the HUV transformer simulation model along the power transmission line, and performing lightning protection measure simulation. The method has the advantages that a work principle of the lightning protection measure of the HUV transformer in the lightning protection process is sufficiently realized; and the fault occurring probability of the HUV transformer due to lightning attack is reduced.

Description

technical field [0001] The invention relates to a power equipment simulation method, in particular to a simulation method for ultra-high voltage transformer lightning protection measures, and belongs to the field of power system simulation. Background technique [0002] With the rapid development of UHV technology, the importance of UHV substations has become increasingly apparent. Compared with high-voltage and ultra-high voltage substations, 1000kV UHV substations present some unique problems. The UHV transformer in the 1000kV UHV substation has also undergone great changes in structure compared with the HV and EHV transformers. The UHV transformer is divided into two parts, the main transformer and the voltage regulation and compensation transformer, and the working principles are also quite different. [0003] In addition, my country has a vast territory and many areas where smart grids are distributed. Thunderstorms occur from time to time. Transformer lightning prote...

AI Technical Summary

Problems solved by technology

Due to the advanced nature of UHV transformer lightning protection technology itself and the low probability of occurrence, domestic simulation research on this aspect is relatively rare, so that it is very difficult to understand the working mechanism of UHV transformer lightning protection measures

[0005] Therefore, once the UHV transformer fails due to lightning attack, the on-site environment is not only dangerous, but also easily damages expensive equipment and causes great economic losses.

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