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    Suzhou Electric Appliance Research Institute
    期刊號: CN32-1800/TM| ISSN1007-3175

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    單電源模式下的鋼鐵廠二期供電系統改進方案研究

    來源:電工電氣發布時間:2021-08-18 09:18 瀏覽次數:608

    單電源模式下的鋼鐵廠二期供電系統改進方案研究

    任立新
    (首鋼京唐鋼鐵聯合有限責任公司,河北 唐山 063200)
     
        摘 要:某大型鋼鐵廠二期工程投產,規模達到 1 500萬t/ 年的產能,需要有 2 個獨立 220 kV 電源點供電,而因之前受周邊網架薄弱情況的制約,只存在一個電源點。從電力平衡、潮流分布、短路水平、安全穩定和投資金額等方面進行論述,并給出了鋼鐵廠擴建二期后與系統聯絡的 2 個方案,經對提出的 2 個方案分析研究,決定采用方案 1,即保持現有內部供電網絡與系統聯絡方案不變,等鋼鐵廠達到 2 000 萬t/ 年規模時,計劃新增一座 220 kV 變電站。
        關鍵詞:鋼鐵廠;獨立電源;負荷;電力平衡;短路水平
        中圖分類號:TM715     文獻標識碼:B     文章編號:1007-3175(2021)08-0049-04
     
    Research and Discussion on Improvement Scheme of Phase II Power Supply
    System in Iron and Steel Plant Based on Single Power Supply Mode
     
    REN Li-xin
    (Shougang Jingtang United Iron and Steel Joint Co., Ltd, Tangshan 063200, China)
     
        Abstract: The second phase project of a large iron and steel plant was put into operation, and this plant has a capacity of 15 million tonsper year, requiring two independent 220 kV power supply points, but there was only one power supply point due to the weakness of the surrounding grid. After analyzing the points, like power balance, power flow distribution, short-circuit level, safety and stability, and investment,two schemes were proposed to solve the problem of the expansion of the iron and steel plant. After analyzing and studying the two proposed schemes, it was decided to adopt scheme 1, which is to keep the existing internal power supply network and system connection scheme unchanged,and plan to add a 220 kV substation when the steel plant reaches a scale of 20 million tons per year.
        Key words: iron and steel plant; independent power supply; load; power balance; short-circuit level
     
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