摘要
隨著我國(guó)國(guó)民經(jīng)濟(jì)的快速增長(zhǎng),用電已成為制約我國(guó)經(jīng)濟(jì)發(fā)展的重要因素。為保證正常的供配電要求,各地都在興建一系列的供配電裝置。
本文主要介紹了毛紡廠35kV總降壓變電所的設(shè)計(jì)。文中對(duì)主接線的選擇、高壓設(shè)備的選擇、負(fù)荷計(jì)算、短路電流計(jì)算,各種繼電保護(hù)選擇和整定計(jì)算皆有詳細(xì)的說(shuō)明。特別對(duì)主接線的選擇,變壓器的選擇,還有一些電氣設(shè)備如斷路器、電流互感器、電壓互感器等的選擇校驗(yàn)作了詳細(xì)的說(shuō)明和分析。
本次設(shè)計(jì)以電力供應(yīng)和傳輸安全、可靠、靈活、經(jīng)濟(jì)為原則。設(shè)計(jì)的內(nèi)容緊密結(jié)合實(shí)際,通過(guò)查找大量相關(guān)資料,設(shè)計(jì)出符合當(dāng)前要求的變電所。其中主變壓器容量的選擇是根據(jù)所帶負(fù)荷多少,并考慮到經(jīng)濟(jì)運(yùn)行,采用兩臺(tái)變壓器SL7-2500/35。
關(guān)鍵詞: 變電站、負(fù)荷計(jì)算、變壓器
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