Abstract
This article is leaching Si-dong in Tong Gang a 110kv substation step-down design. First of all, during the design process on the basis of information given by the requirements and provide data analysis of the load trend. The demand of electricity and current electricity situation expounded the need for, and then through the summary of the proposed substation, as well as to consider the direction of advance, and on to the information and analysis of local conditions, through security, economic and reliability considerations, and the power supply through the load to determine the scope of the number of the main transformer, capacity and model, but also identified the capacity of the transformer station and model, and then set the 110kV, 35kV, 10kV, and the main electricity station wiring . Finally, based on the maximum continuous current and short circuit calculation results of high-voltage fuses, isolating switches, busbar, voltage transformers, current transformers, such as a selection, and thus completed the first part of 110kV substation step-down design .
