This design first analyzes the load development trend according to the parameters of the system, line and all loads given in the task book. This paper expounds the necessity of building the station from the aspect of load growth, and then through the summary of the proposed substation and line direction, and through the analysis of load data, safety, economy and reliability, determines the 35kV, 10kV and the main wiring of station power, and then through the load calculation and power supply range to determine the number, capacity and model of the main transformer, and also determine the capacity and model of the station transformer, and calculate the short-circuit current, so as to complete the 35kV electrical part design.
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