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重慶大學供配電系統131講視頻

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內容介紹

    課程內容簡介

    本課程主要討論電力網絡中110kV及以下的供配電系統,系統地介紹供配電系統的構成、分析計算和基本的工程設計方法。

    課程共分9章:第1、2章建立對供配電系統形象的總體認識;第3章對與本課程相關的基礎知識進行復習、歸納與提高;第4~9章對供配電系統分析、設計所涉及的主要問題進行專門介紹,包括負荷計算、短路電流計算、中壓系統故障保護、中壓系統設備選擇、低壓系統及故障保護與設備選擇、線纜與變壓器選擇等。

    根據工程現狀和技術發展,本課程精簡了高壓系統的內容,強化了中、低壓系統和電氣安全性問題,引入了一些新的技術和方法。課程以IEC(國際電工委員會)技術體系為指導,以國家標準為依據,以供配電系統設計為主線,以符合教學規律為準則,篩選并組合教學內容,以期達到精煉、實用、易學的目的,且內容上與IEC技術體系基本一致,符合國際化要求。

     

    教材及參考資料

    課程教材:

    《供配電系統》.楊岳編著.科學出版社.2007年12月

    參考資料:

    《供配電技術》.劉介才編著.機械工業出版社.2000年8月

    《電氣工程設計》.馬志溪主編.機械工業出版社.2002年10月

    《工業與民用配電設計手冊》.中國航空規劃設計研究院組編.2005年10月.第三版

     

    第一章 概述
    §1.1 電能與電力系統
    1.1.1 電力系統結構及各環節功能
    1.1.2 電力系統運行特點
    1.1.3 電力系統聯網運行
    §1.2 電力系統的表達
    1.2.1 對象表達的一般概念
    1.2.2 結構描述
    1.2.3 運行狀態描述
    1.2.4 表達手段的要素
    §1.3 電力系統標準電壓
    1.3.1 電壓等級劃分的工程背景
    1.3.2 標準電壓及其解讀
    §1.4 電力負荷及其對供電可靠性的要求
    1.4.1 電力負荷的三種含義
    1.4.2 負荷等級
    §1.5 城市電網與供配電系統
    1.5.1 城網結構與供電設施
    1.5.2 供配電系統在電網中的位置與特點

    第二章 供配電系統的構成
    §2.1 供配電系統的電壓層次
    2.1.1 供電電壓與用電電壓
    2.1.2 三種不同電壓層次的供配電系統
    §2.2 變配電所電氣主結線
    2.2.1 主結線所要表達的信息
    2.2.2 主結線常用設備簡介
    2.2.3 構成主結線的基本要素
    2.2.4 常用主結線
    §2.3 供配電系統網絡結線
    2.3.1 網絡結線所要表達的信息
    2.3.2 典型網絡結線方式
    2.3.3 各種網絡結線方式的組合應用
    §2.4 供配電設施之變配電所
    2.4.1 變配電所電氣裝置
    2.4.2 變配電所平面布置與土建要求
    §2.5 供配電設施之電力線路
    2.5.1 架空線路
    2.5.2 電纜線路

    第三章 供配電系統計算基礎
    §3.1 單相交流電路計算
    3.1.1 交流電路有功、無功和視在功率定義
    3.1.2 功率三角形與功率因數
    §3.2 三相交流電路計算
    3.2.1 平衡三相電路中三相電壓、電流關系
    3.2.2 平衡三相電路功率計算
    3.2.3 三相交流電路求解
    §3.3 標幺制及基值選取
    3.3.1 標幺制
    3.3.2 單一電壓等級電網中基值選取規則
    §3.4 變壓器主要電氣參數
    3.4.1 變壓器額定參數
    3.4.2 變壓器開路實驗所得參數
    3.4.3 變壓器短路實驗所得參數
    §3.5 交流異步電動機主要電氣參數
    3.5.1 電動機的工作制
    3.5.2 電動機額定參數
    3.5.3 電動機啟動參數
    §3.6 電力線路阻抗與導納
    3.6.1 線路串聯與并聯參數
    3.6.2 線路等效電路

    第四章 負荷計算
    §4.1 負荷調查與分析
    4.1.1 負荷曲線
    4.1.2 負荷曲線指標
    §4.2 負荷熱效應與計算負荷概念
    4.2.1 負荷熱效應
    4.2.2 計算負荷概念
    §4.3 負荷計算方法
    4.3.1 需要系數法
    4.3.2 二項式法
    4.3.3 單位指標法
    4.3.4 三相負荷不平衡情況的處理
    §4.4 電網功率與電能損耗計算
    4.4.1 電網功率損耗
    4.4.2 電網電能損耗
    §4.5 無功功率補償
    4.5.1 功率因數的工程計算
    4.5.2 無功補償原理與計算
    4.5.3 補償電容器的接線方式、裝設地點及控制方式
    §4.6 負荷計算示例

    第五章 短路電流計算
    §5.1 短路概述
    5.1.1 供配電系統中性點運行方式
    5.1.2 短路原因、危害及類型
    §5.2 供配電系統三相短路暫態過程
    5.2.1 遠端短路與無限大容量電源系統
    5.2.2 三相短路暫態過程
    §5.3 供配電系統三相短路全電流特征分析
    5.3.1 三相短路全電流最大值條件
    5.3.2 三相短路全電流特征值
    5.3.3 異步電機對短路沖擊電流的影響
    §5.4 標幺值法計算三相短路電流
    5.4.1 不同電壓等級電網中電壓基值選取規則
    5.4.2 電網元件阻抗標幺值計算
    5.4.3 用標幺值法計算短路電流
    §5.5 短路容量及其討論
    5.5.1 短路容量定義及計算
    5.5.2 短路容量的原理性解釋與工程應用
    §5.6 不對稱短路電流計算簡介
    5.6.1 不對稱短路計算的本質障礙
    5.6.2 對稱分量法
    5.6.3 正序等效定則與兩相短路電流計算
    5.6.4 變壓器穿越電流

    第六章 中壓系統繼電保護
    §6.1 故障與保護
    6.1.1 供配電系統不正常運行與故障
    6.1.2 保護的目的、種類與要求
    6.1.3 故障判別與保護動作的依據
    §6.2 保護用繼電器的保護特性
    6.2.1 繼電器一般性問題
    6.2.2 電磁式繼電器
    6.2.3 感應式繼電器
    §6.3 電流保護裝置的工作原理與接線方式
    6.3.1 交、直流操作的繼電保護工作原理
    6.3.2 互感器與繼電器的接線方式
    §6.4 線路相間短路的電流三段保護
    6.4.1 無時限電流速斷保護
    6.4.2 定(反)時限過電流保護
    6.4.3 有時限電流速斷保護
    6.4.4 電流三段保護的綜合應用
    §6.5 線路不正常運行狀態保護
    6.5.1 過負荷保護
    6.5.2 小接地系統單相接地保護
    §6.6 配電變壓器保護
    6.6.1 變壓器相間短路的電流三段保護
    6.6.2 變壓器相間短路的差動保護
    6.6.3 根據故障效應設置的變壓器保護
    §6.7 異步電動機、電力電容器、分段母線故障類型與保護設置

    第七章 中壓電氣設備選擇
    §7.1 短路電流效應
    7.1.1 短路電流電動力效應
    7.1.2 短路電流熱效應
    §7.2 電氣設備選擇的一般性問題
    7.2.1 電氣設備選擇的基本原則
    7.2.2 按正常工作條件選擇設備參數
    7.2.3 按短路動、熱穩定校驗設備參數
    7.2.4 按環境條件校驗設備參數
    §7.3 配電斷路器選擇
    7.3.1 開關電器的電弧與滅弧
    7.3.2 配電斷路器結構、工作原理及參數選擇
    §7.4 熔斷器及其選擇
    7.4.1 熔斷器結構、保護特性及參數選擇
    7.4.2 熔斷器類型簡介
    §7.5 負荷開關-熔斷器組合及選擇
    7.5.1 組合簡介
    7.5.2 轉移電流、交接電流及校驗
    §7.6 互感器及其選擇
    7.6.1 互感器用途與工作原理
    7.6.2 互感器準確度等級與額定容量
    7.6.3 互感器接線方式及二次負荷計算
    7.6.4 電流互感器二次繞組開路的后果

    第八章 低壓配電系統及設備選擇
    §8.1 低壓系統分類
    8.1.1 與低壓系統相關的術語
    8.1.2 低壓系統按接地形式分類
    8.1.3 低壓系統按帶電導體形式的分類
    §8.2 低壓系統短路電流計算
    8.2.1 低壓系統短路電流計算特點及三相短路電流計算
    8.2.2 單相短路電流計算的相保阻抗法
    §8.3 低壓配電設備
    8.3.1 低壓斷路器
    8.3.2 熔斷器、開關、隔離器及電器組合
    §8.4 低壓配電線路的過電流保護
    8.4.1 過電流及保護原則
    8.4.2 低壓配電線路短路保護
    8.4.3 低壓配電線路過負荷保護
    §8.5 低壓配電線路的接地故障簡介
    8.5.1 接地故障概念
    8.5.2 各接地形式低壓系統接地故障電流特點

    第九章 電力線纜與變壓器選擇
    §9.1 電能質量概述
    9.1.1 電能質量及主要指標
    9.1.2 電能質量與線纜、變壓器選擇的關系
    §9.2 線路、變壓器電壓損失計算
    9.2.1 電壓降落、電壓損失與電壓偏差
    9.2.2 電力線路、變壓器電壓損失計算
    §9.3 電壓偏差與電壓調整
    9.3.1 電壓調整方式
    9.3.2 利用變壓器分接頭的電壓調整方法
    §9.4 配電變壓器選擇
    9.4.1 變壓器類型及選擇
    9.4.2 變壓器參數選擇
    9.4.3 變壓器連接組選擇
    9.4.4 基于運行考慮的選擇
    §9.5 電力線纜選擇
    9.5.1 線纜允許載流量
    9.5.2 線纜相導體截面選擇
    9.5.3 線纜中性線與保護線導體截面選擇
    9.5.4 線纜其他特性與參數選擇

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