110kv變電站設計

電氣自動化論文編號:ZD782    論文字數:22565,頁數:45

 目   錄
摘  要  1
Abstract 2
第1章   緒論 3
 1.1 變電站發展的歷史與現狀 3
 1.2 課題來源及設計背景 4
第2章   變電站負荷計算和無功補償的計算 5
 2.1 變電站的負荷計算 5
 2.2 無功補償的目的 6
 2.3 無功補償的計算 6
第3章   主變壓器臺數和容量的選擇 8
 3.1 變壓器的選擇原則 8
 3.2 變壓器臺數的選擇 8
 3.3 變壓器容量的選擇 8
第4章   主接線方案的確定 10
 4.1 主接線的基本要求 10
 4.2 主接線的方案與分析 11
 4.3 電氣主接線的確定 11
第5章   短路電流的計算 13
 5.1 繪制計算電路 13
 5.2 短路電流計算 14
第6章   高壓側配電系統的設計   17
 6.1 高壓線路電纜的選擇 17
 6.2 高壓配電線路布線方案的選擇 17
 6.3 高壓配電系統設備 18
第7章   低壓側配電系統的設計 21
 7.1 變電站配電線路布線方案的選擇 21
 7.2 線路導線、配電設備及其保護設備的選擇 21
 7.3 變電站用電及照明 25
第8章  變電站二次回路方案的確定 27
 8.1 二次回路的定義和分類 27
 8.2 二次回路的操作系統 27
 8.3 二次回路的接線要求 27
 8.4 電氣測量儀表及測量回路 28
 8.5 斷路器的控制與信號回路 29
 8.6 自動裝置 30
 8.7 絕緣監視裝置 30
 8.8 繼電保護的選擇與整定 32
第九章   防雷與接地方案的設計 39
 9.1 防雷保護 39
 9.2 接地裝置的設計 39
結束語 41
致謝 42
參考文獻 43

摘  要
隨著經濟的發展和現代工業建設的迅速崛起，供電系統的設計越來越全面、系統，工廠用電量迅速增長，對電能質量、技術經濟狀況、供電的可靠性指標也日益提高，因此對供電設計也有了更高、更完善的要求。設計是否合理，不僅直接影響基建投資、運行費用和有色金屬的消耗量，也會反映在供電的可靠性和安全生產方面，它和企業的經濟效益、設備人身安全密切相關。
 變電站是電力系統的一個重要組成部分，由電器設備及配電網絡按一定的接線方式所構成，他從電力系統取得電能，通過其變換、分配、輸送與保護等功能，然后將電能安全、可靠、經濟的輸送到每一個用電設備的轉設場所。作為電能傳輸與控制的樞紐，變電站必須改變傳統的設計和控制模式，才能適應現代電力系統、現代化工業生產和社會生活的發展趨勢。隨著計算機技術、現代通訊和網絡技術的發展，為目前變電站的監視、控制、保護和計量裝置及系統分隔的狀態提供了優化組合和系統集成的技術基礎。
110KV變電站屬于高壓網絡，該地區變電所所涉及方面多，考慮問題多，分析變電所擔負的任務及用戶負荷等情況，選擇所址，利用用戶數據進行負荷計算，確定用戶無功功率補償裝置。同時進行各種變壓器的選擇，從而確定變電站的接線方式，再進行短路電流計算，選擇送配電網絡及導線，進行短路電流計算。選擇變電站高低壓電氣設備，為變電站平面及剖面圖提供依據。本變電所的初步設計包括了：（1）總體方案的確定（2）負荷分析（3）短路電流的計算（4）高低壓配電系統設計與系統接線方案選擇（5）繼電保護的選擇與整定（6）防雷與接地保護等內容。
 隨著電力技術高新化、復雜化的迅速發展，電力系統在從發電到供電的所有領域中，通過新技術的使用，都在不斷的發生變化。變電所作為電力系統中一個關鍵的環節也同樣在新技術領域得到了充分的發展。

[關鍵詞] 變電站、負荷、輸電系統、配電系統、高壓網絡、補償裝置
 

Abstract
 Along with the economic development and the modern industry developments of quick rising, the design of the power supply system become more and more completely and system. Because the quickly increase electricity of factories, it also increases seriously to the dependable index of the economic condition, power supply in quantity. Therefore they need the higher and more perfect request to the power supply. Whether Design reasonable, not only affect directly the base investment and circulate the expenses with have the metal depletion in colour metal, but also will reflect the dependable in power supply and the safe in many facts. In a word, it is close with the economic performance and the safety of the people.
 The substation is an importance part of the electric power system, it is consisted of the electric appliances equipments and the Transmission and the Distribution. It obtains the electric power from the electric power system, through its function of transformation and assign, transport and safety. Then transport the power to every place with safe, dependable, and economical. As an important part of power’s transport and control, the transformer substation must change the mode of the traditional design and control, then can adapt to the modern electric power system, the development of modern industry and the of trend of the society life.
 The region of 110-voltage effect many fields and should consider many problems. Analyse change to give or get an electric shock a mission for carrying and customers carries etc. circumstance, choose the address, make good use of customer data proceed then carry calculation, ascertain the correct equipment of the customer. At the same time following the choice of every kind of transformer, then make sure the line method of the transformer substation, then calculate the short-circuit electric current, choosing to send together with the electric wire method and the style of the wire, then proceeding the calculation of short-circuit electric current. This first step of design included:(1) ascertain the total project (2) load analysis(3) the calculation of the short-circuit electric current (4) the design of an electric shock the system design to connect with system and the choice of line project (5) the choice and the settle of the protective facility (6) the contents to defend the thunder and protection of connect the earth. Along with the high and quick development of electric power technique, electric power system then can change from the generate of the electricity to the supply the power.

[key words] substation ,load ,transmission system , distribution ,
high voltage network ，correction equipment.