【正文】 I / 62電力變電所主變保護(hù)設(shè)計摘要： 變電所是電力系統(tǒng)的一個重要組成部分，特別是超高壓樞紐變電站的地位更為突出，它起著匯集和分配電的等重要作用，是全系統(tǒng)安全、可靠、經(jīng)濟運行的重要一環(huán)。如果變電站的設(shè)備出現(xiàn)故障將危及整個系統(tǒng)連續(xù)穩(wěn)定運行，可能出現(xiàn)系統(tǒng)解列，致使用戶斷電，造成巨大的經(jīng)濟損失。因此要給變電站的設(shè)備裝設(shè)動作可靠、迅速、性能完善的保護(hù)，把故障影響限制在最小范圍內(nèi)。本次設(shè)計的電力變電所有 3 個電壓等級，110KV/35KV/10KV。高壓側(cè)采用雙母帶旁母的接線方式，中壓側(cè)采用單母線分段的接線方式，低壓側(cè)為單母線分段，無負(fù)荷，接有無功補償裝置。主變?yōu)?SFSZ10 型三繞組變壓器（兩臺） 。本次設(shè)計中主要對主變壓器進(jìn)行了保護(hù)配置和整定計算，其次對各側(cè)線路進(jìn)行了保護(hù)配置和整定計算。以上設(shè)計都是參考《電力工程設(shè)計手冊》 、 《電力系統(tǒng)繼電保護(hù)原理》 、 《電力系統(tǒng)繼電保護(hù)與安全自動裝置整定計算》 、 《電力工程電氣設(shè)計手冊》等資料來進(jìn)行配置和整定計算的。關(guān)鍵詞： 變電站 保護(hù)配置 整定計算II / 62Electricity transformer substation designed to protect Abstract： Substation power system is an important part, especially EHV substations hub status more prominent, and it plays a power pool and the allocation of an important role in the whole system is safe, reliable and economic operation of an important part. If the substation equipment failure would jeopardize the entire system for stable operation of the system may arise out, causing the user off, causing huge economic losses. So give the substation equipment installed Action reliable, rapid and sound performance of the protection, to limit the impact of failure within the framework of the smallest.The design of the 110 KV substations are three voltage levels, 110 KV/35KV/10KV. Highpressure side of a dual master39。s cable next to the bus bar, a singleside pressure in the subbus connection mode, lowpressure side of a single subbus, no load, and then there reactive pensation devices. SFSZ10 into the main threewinding transformer（two）. The design of the main transformer of main protection for the configuration and setting calculation, followed by the side of the line for the protection of configuration and setting calculation. Above reference design are Power Engineering Design Manual, power system protection principle, power system protection and security automatic device setting calculation, Electric Power Engineering Design Manual and use other information used to configuration and setting calculation.Key words: Substation configuration setting calculation.I / 62目 錄1 緒論 .....................................................................................................................................1 背景 ............................................................................................................................1 國內(nèi)外現(xiàn)狀 ................................................................................................................1 畢業(yè)設(shè)計（論文）的主要內(nèi)容 ................................................................................12 長慶水電廠馬嶺變電所 ..................................................................................................3 背景資料 ....................................................................................................................3 主接線形式 ................................................................................................................3 設(shè)計任務(wù)要求 ............................................................................................................3 原始資料 ....................................................................................................................3 電力變電所主接線見圖 22......................................................................................53 短路計算 ..........................................................................................................................7 主變的路計算 ............................................................................................................7 線路的短路計算 ........................................................................................................84 變電站保護(hù)配置原則及說明 ..........................................................................................9 差動保護(hù) ....................................................................................................................9 差動保護(hù)原理 .....................................................................................................9 差動保護(hù)計算式 .................................................................................................9 變壓器瓦斯保護(hù) ......................................................................................................11 后備保護(hù) ..................................................................................................................12 零序過電流保護(hù) ...............................................................................................12 電壓啟動的過電流保護(hù)原理 ...........................................................................12 零序保護(hù)原理圖（見圖 46） ........................................................................135 線路各種保護(hù)的原理及應(yīng)用 ........................................................................................15 相間距離保護(hù) ..........................................................................................................15 相間接地保護(hù) ..........................................................................................................15 三段式電流保護(hù) ......................................................................................................15 高頻閉鎖保護(hù) ..........................................................................................................15 零序電流保護(hù) ..........................................................................................................16 110KV 線路保護(hù)配置及說明 ...................................................................................16 配置說明 ...........................................................................................................16 整定計算 ...........................................................................................................16 高頻閉鎖距離保護(hù) ...........................................................................................17 零序電流保護(hù) ...................................................................................................17II / 62 三項一次重合閘 ....................................................