Abstract
Power of modern industrial production of major energy and power. Power is easy to convert from other forms of energy from, and easy conversion to other forms of energy to supply with; the distribution of power delivery is simple and economic, and easy to control, regulation and measurement, is conducive to automation of the production process. Therefore, the power in the modern industrial production and the life of the entire national economy is extensively used. Substation design generally includes transformers, circuit breaker, disconnecting switch, bus bar, current and voltage transformers and other equipment and instruments are design choices. This article is a factory 35KV substation design, specifically the factory load statistics, select the number of transformers and substation plant capacity, select the total number of transformers and substation capacity, short-circuit current calculation, high, low voltage distribution device (counter) selection, high and low pressure outlet choice, protection devices to set and setting calculation, lightning and grounding and the corresponding analysis shows that the total substation power supply system last plotted the whole map.