35kV變電站典型設(shè)計(jì)-戶內(nèi)站電氣部分設(shè)計(jì)

摘   要
電能是現(xiàn)代工業(yè)生產(chǎn)的主要能源和動(dòng)力，電能既易于由氣壓形式的能量轉(zhuǎn)換而來(lái)，又易于轉(zhuǎn)換為其他的能量形式。如果對(duì)變配電系統(tǒng)進(jìn)行一個(gè)完善的規(guī)劃，能很好地節(jié)約資金、合理規(guī)劃用地、降低電能損耗、提高電壓質(zhì)量、保證系統(tǒng)的正常運(yùn)行。工廠供電設(shè)計(jì)是整個(gè)工廠設(shè)計(jì)的重要組成部分，工廠供電設(shè)計(jì)的質(zhì)量影響到工廠的生產(chǎn)及其發(fā)展，作為從事工廠供電工作的人員，有必要了解和掌握工廠供電設(shè)計(jì)的有關(guān)知識(shí)，以便適應(yīng)設(shè)計(jì)工作的需要。
論文以設(shè)計(jì)手冊(cè)的負(fù)荷要求為依據(jù)，以變電站的最佳運(yùn)行方式為前提，按照有關(guān)規(guī)范，完成了滿足供電要求的初步設(shè)計(jì)。
 本次設(shè)計(jì)首先從國(guó)家變電站典型設(shè)計(jì)-35kV戶內(nèi)站設(shè)計(jì)中選取兩套方案，比較兩方案的技術(shù)指標(biāo)和經(jīng)濟(jì)指標(biāo)，從而擇出最優(yōu)方案。然后根據(jù)最終方案進(jìn)行一次側(cè)電氣系統(tǒng)設(shè)計(jì)和二次側(cè)電氣系統(tǒng)設(shè)計(jì)。一次系統(tǒng)包括的內(nèi)容有負(fù)荷計(jì)算、短路電流計(jì)算、一次電氣設(shè)備選型與校驗(yàn)、導(dǎo)線選擇、防雷保護(hù)。二次系統(tǒng)包括的內(nèi)容有：繼電保護(hù)和電能計(jì)量。
關(guān)鍵詞：負(fù)荷計(jì)算、主接線設(shè)計(jì)、短路電流、設(shè)備選擇、繼電保護(hù)
 
The typical design of 35kV substation - electrical part of indoor station

Abstract

Electricity is a major source of energy and power of modern industrial production, electricity is both easy to come by the pressure in the form of energy conversion, they are readily convertible to other forms of energy. If you change the power distribution system planning can save money, rational planning of land use, reduce energy loss and improve voltage quality to ensure the normal operation of the system. The factory power supply design is an important part of the entire plant design, the quality of the factory power supply design affect the factory's production and development of personnel engaged in the work of the factory power supply, it is necessary to understand and master the relevant knowledge of the factory power supply design, in order to adapt to the needs of the design work.
The design manual is based on the load requirements, to the best operating way for the substation premises, in accordance with the relative specifications, and completes the preliminary design.
The design is first of all select two options from the typical design of the national substation 35kV indoor station design, and compare the two programs of technical indicators and economic indicators, in order to choose the best plan. The primary electrical system design and the secondary side of the electrical system design based on the final plan. The contents of a system including load calculations, short circuit current calculation, electrical equipment selection and calibration, wire selection, lightning protection. The secondary system includes: protection and energy metering.
Keywords：load calculation, the main wiring design, short-circuit current,         equipment selection, relay protection

第一章 引言 1
1.1 典型設(shè)計(jì)背景 1
1.2 典型設(shè)計(jì)國(guó)內(nèi)外發(fā)展趨勢(shì) 1
1.3 典型設(shè)計(jì)的意義 1
第二章 負(fù)荷計(jì)算與無(wú)功功率補(bǔ)償 2
2.1 負(fù)荷計(jì)算的意義 2
2.2 負(fù)荷的計(jì)算方法 2
2.3 無(wú)功補(bǔ)償計(jì)算 4
第三章 一次側(cè)電氣系統(tǒng)設(shè)計(jì) 6
3.1 電氣主接線設(shè)計(jì) 6
3.1.1 電氣主接線的概念 6
3.1.2主接線的設(shè)計(jì)依據(jù) 6
3.1.3 主接線設(shè)計(jì)的基本要求 7
3.1.4 主接線方案的比較 8
3.1.5 變電所供配電電壓的選擇 8
3.1.6 變電所電氣主接線設(shè)計(jì) 9
3.1.7 站用變壓器選擇 9
3.2 短路計(jì)算 10
3.2.1 短路計(jì)算的意義 10
3.2.2 短路計(jì)算步驟及分析 10
3.3 電氣設(shè)備選擇 13
3.3.1 斷路器的選擇 13
3.3.2 隔離開(kāi)關(guān)的選擇 15
3.3.3 熔斷器選擇 15
3.3.4 電壓互感器的選擇 16
3.3.5 電流互感器的選擇 17
3.4 母線與各電壓等級(jí)出線選擇 19
3.4.1 6kV母線的選擇 19
3.4.2 35kV線路導(dǎo)線的選擇 20
3.4.3 6kV出線的選擇 21
3.5 防雷保護(hù) 26
3.5.1 避雷器的基本原理 26
3.5.2 避雷器的設(shè)置 26
3.5.3 避雷器設(shè)置設(shè)計(jì) 26
第四章 二次側(cè)電氣系統(tǒng)設(shè)計(jì) 27
4.1 繼電保護(hù) 27
4.1.1 變壓器故障類型 27
4.1.2 35kV主變壓器保護(hù) 27
4.1.3 6kV出線保護(hù) 29
4.2 電能的測(cè)量與計(jì)算 30
結(jié)論 32
參考文獻(xiàn) 33
致謝 34
聲明 35
附錄 36
附錄1：原始資料 36
附錄2: 電氣主接線圖 39