Abstract:
This paper describes the use of compaction techniques, applicable to projects of outdoor, air-insulated substations, rated voltage 138kV, 650kV BIL (Basic Insulation Leve...Show MoreMetadata
Abstract:
This paper describes the use of compaction techniques, applicable to projects of outdoor, air-insulated substations, rated voltage 138kV, 650kV BIL (Basic Insulation Level), using only conventional equipment. A new strategy to obtain compact solutions is described, based on creating alternatives, each one starting by defining the main direction of the reduction, i.e., clearances (phase-to-phase and phase-to-earth distances) or bay length (distances between equipment in each bay), and then applying the techniques available in the literature, beginning by those that provide greater reduction and then following with the application of the remaining techniques, as long as they do not conflict with the previous choices. The compaction of substations with the main bus and transfer bus arrangement was investigated, and during the development of the study, two different solutions were proposed. The comparison and choice of the best compact substation design was also described. The adopted solution still underwent a refinement process, until accepting the final project, including clearances checks (from both dielectric supportability and safety for maintenance points of view), maximum strength of electric and magnetic fields for human exposure and protection against direct lightning (shielding failure).
Published in: 2023 IEEE Power & Energy Society General Meeting (PESGM)
Date of Conference: 16-20 July 2023
Date Added to IEEE Xplore: 25 September 2023
ISBN Information: