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畢業(yè)設(shè)計(jì) 220KV變電站設(shè)計(jì),正文共65頁(yè),21751字
摘要:本次220KV變電站的設(shè)計(jì)包括一次和二次部分,主要對(duì)變壓器臺(tái)數(shù)和容量、主接線方案、高壓開關(guān)設(shè)備、配電裝置、防雷保護(hù)及繼電保護(hù)的確定;對(duì)變電站負(fù)荷、短路電流的計(jì)算。在整個(gè)設(shè)計(jì)過程中,短路電流的計(jì)算是基礎(chǔ),根據(jù)計(jì)算出的短路電流進(jìn)而選擇高壓開關(guān)設(shè)備,這樣才能在正常運(yùn)行和短路時(shí)可靠地工作。為了保護(hù)人身安全,需要裝設(shè)各種保護(hù)裝置,而防雷保護(hù)是保障人身安全的重要措施;為了提高系統(tǒng)運(yùn)行可靠性,需要裝設(shè)各種繼電保護(hù)裝置。
ABSTRACT: This paper is design the 220KV transformer substation which includes two parts of electrical divides. The first part mainly chooses the capacity and specification of the transformer and all kinds of divides. It also calculates the burden, passive compensation and the shot-circuited current. Among the design, the shot-circuited current is basic, upon which can we choose high-level instrument. So it can work firmly not only it is common, but also it is shot-circuited. In order to protect the human, we need all kinds of protected instruments, and it is the key point; in order to offer firm power, we need all kinds of protected instruments.
關(guān)鍵詞:220KV 變電站設(shè)計(jì)
Keywords: 220 KV transformer substation, Comprehensive automation system, design
第1章:原始資料分析及主變選擇
1.1原始資料分析
本工程情況:變電所類型為220KV降壓變電所,該所建成后與110KV和220KV電網(wǎng)相連,并供給近區(qū)用戶,按規(guī)劃設(shè)計(jì)規(guī)劃容量為240MVA,單機(jī)容量為120MVA,臺(tái)數(shù)為兩臺(tái)。
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