塑料制品廠全廠總降壓變電所及配電系統(tǒng)設(shè)計-展示頁
2025-07-08 23:22本頁面
【正文】 包括全廠的負荷計算、高壓側(cè)和低壓側(cè)的短路計算、設(shè)備選擇及校驗、主要設(shè)備繼電保護設(shè)計、配電裝置設(shè)計、防雷和接地設(shè)計等。根據(jù)國家供電部門的相關(guān)規(guī)定，畫出總配變電所及配電系統(tǒng)的主接線圖。關(guān)鍵詞：變電所，負荷計算，設(shè)備選型，繼電保護 ABSTRACTThe whole plant distribution substation and power distribution system design of a plastic products factory is for power plant design. The design makes the narrative about the factory power supply, main equipment selection, protection device configuration and grounding system for lightning protection, which also includes the load calculation of the factory, the short circuit current calculation of the high pressure side and low pressure side, equipment selection and validation, the main equipment relay protection design, power distribution equipment design, lightning protection and grounding design. This design is based on the calculation of the active power, reactive power and apparent power transformer and the size of the corresponding main equipment main parameter, then works out the pensation puting power according to user requirements to voltage .Thus it can obtain the desirable size and number of pensation capacitor.According to the relevant provisions of the national electricity sector, the design draws the main connection diagram about the total distribution substation and power distribution system. Main electrical connection have great influence on the electrical equipment selection, the layout of the distribution, operation safety, reliability and flexibility, also power engineering construction and economy of the operation and so on.Keywords: substations, load calculation, equipment selection, relay protection 目錄摘要 1 ABSTRACT 2 目錄 3 1 設(shè)計任務(wù) 5 設(shè)計原則 5 設(shè)計內(nèi)容 5 設(shè)計要求 5 設(shè)計依據(jù) 5 2 負荷計算 6 3 無功功率計算和電氣設(shè)備選擇 7 7 8 主變壓器選型 8 8 架空線的選擇 10 母線選擇 11 4 電氣主接線圖 12 5 短路電流的計算及電氣設(shè)備的選擇 12 12 12 （標幺值計算方法）： 12 13 14 14 14 10kv高壓側(cè)電氣設(shè)備選擇 16 6．繼電保護配置 18 18 18 18 18 19 35KV進線線路保護過電流保護 20 10KV線路保護 21 7 防雷和接地裝置的確定 22 22 22 雷電侵入波保護 23 23 8．變電所內(nèi)外布置情況 24 24 24 24 9 工廠的電能節(jié)約 24 電能節(jié)約的意義 25 電力變壓器的經(jīng)濟運行 25 課程設(shè)計心得 26 參考文獻： 27 致謝 28 1 設(shè)計任務(wù) 設(shè)計原則 由于該廠屬于二類負荷，因此其是電力系統(tǒng)網(wǎng)絡(luò)結(jié)構(gòu)的重要組成部分。 設(shè)計內(nèi)容 設(shè)計某塑料制品廠全廠總降壓變電所及配電系統(tǒng)設(shè)計。且No1，No2為暗備用，No5為明備用。 。 (2)廠用負荷：全廠各車間電氣設(shè)備及車間變電所負荷計算表（380伏側(cè)）。 2)電業(yè)部門變電所配出線路定時限過電流保護裝置的整定時間為2s。 4)供電系統(tǒng)技術(shù)數(shù)據(jù)：電業(yè)部門變電所35kv母線為無限大電源系統(tǒng)，其短路容量200兆伏安 (4)生產(chǎn)車間為三班制，部分車間為單班或兩班制，全年最大負荷利用時間為5000小時，屬于二級負荷。 2)—1深處一年最熱月平均溫度為20攝氏度。 4)。 (6)地質(zhì)水文條件： 1)本廠地表面比較平坦，土壤主要成分為積土及砂質(zhì)粘土，—7米不等。2 負荷計算根據(jù)公式： 分別計算出各車間的有功和無功功率及視在功率的計算值填入表21表21 全廠各車間電氣設(shè)備及車間變電所負荷計算表（380伏側(cè)）序號車間或用電設(shè)備組名稱設(shè)備容量(千瓦)需要系數(shù)功率因數(shù)Cos功率因數(shù)腳正切tan計算負荷有功(千瓦)無功(千乏)視在(千伏安)（1）變電所1薄膜車間14008401117．2
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