摘要
随着我国国民经济的快速增长，用电已成为制约我国经济发展的重要因素。为保证正常的供配电要求，各地都在兴建一系列的供配电装置。
本文主要介绍了毛纺厂35kV总降压变电所的设计。文中对主接线的选择、高压设备的选择、负荷计算、短路电流计算,各种继电保护选择和整定计算皆有详细的说明。特别对主接线的选择,变压器的选择,还有一些电气设备如断路器、电流互感器、电压互感器等的选择校验作了详细的说明和分析。
本次设计以电力供应和传输安全、可靠、灵活、经济为原则。设计的内容紧密结合实际，通过查找大量相关资料，设计出符合当前要求的变电所。其中主变压器容量的选择是根据所带负荷多少，并考虑到经济运行，采用两台变压器SL7－2500/35。
关键词： 变电站、负荷计算、变压器
Abstract
With the fast growth of the our country national economy，using the electricity also becomes important of the development and supervision in our country. Everywhere a series of electricity device are built.
This paper mainly introduces the design of 35kV substation of Woolen mill. It discusses the choice of main wiring, high pressure equipment and all kinds of the protection of relay, the calculation of load, short current and so on in detail, especially, the choice of main wiring, transformer and some electric equipment such as circuit breaker, current and Voltage sensor.
This design take the electric power supply and the transmission safe, reliable, is nimble, the economy as the principle. The design is closely related to reality in order to design the suitable substation by studying a lot of materials. Main transformer capacity choice is according to brings to shoulder how many, and considered Economic Operation, uses two transformers SL7－2500/35.
KEY WORDS: Substation Load forecasting Transformer
