Optimization of Lightning Protection and Grounding Structure Design for High Voltage Prefabricated Substation Buildings
The lightning protection grounding structure is an important component of high-voltage prefabricated substation buildings,it plays an important role in protecting the safety of electrical equipment and people inside buildings,however,the existing structure has poor lightning protection effect,the maximum impact contact potential and step voltage of a building under 100kA lightning current are relatively high,the design optimization of lightning protection grounding structure of high voltage assembled substation buildings is presented.Adding a flasher in the prefabricated parapet of a substation building,and the vertical steel bar is arranged in the post-cast band of the precast wall body as the grounding lead,connect with the flasher,installation of ground plates on prefabricated wall door and window structures,based on the optimization of equivalent potential grounding device,the design optimization of lightning protection grounding structure of high voltage assembled substation building is realized.The example analysis results indicate that,after optimization,the maximum impact contact potential and step voltage of the building under 100kA lightning current are significantly reduced,and it meets the regulatory requirements and has good lightning protection effect.
万方数据
维普
