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  • 2015-06-02

    世界首臺200千伏高壓直流斷路器研制成功

    作者:  來源:

       近日,由國網智能電網研究院自主研制的世界首臺200千伏高壓直流斷路器在北京市重點實驗室“電力系統電力電子實驗室”完成了型式試驗,標志著我國在直流輸電核心裝備研發領域取得了重大突破,為我國直流輸電的建設和直流電網的構建掃清了障礙。
    基于柔性直流的多端直流輸電和直流電網技術是解決新能源并網和消納問題的有效技術手段之一,而高壓直流斷路器構建直流電網的關鍵設備,對直流輸電系統和直流電網的安全可靠運行有著極其重要的作用。
        國網智能電網研究院作為我國直流輸電技術的領跑者一直關注著國際前沿高端技術的研究。2012年以來,依托國家能源局和國家電網公司科技項目下達的高壓直流斷路器關鍵技術研究及樣機研制項目,開展了大量的關鍵技術研究工作,創造性地提出了超高速機械隔離開關與大功率IGBT全橋級聯組件相結合的技術路線,解決了固態直流斷路器高損耗的缺陷,有效地克服了機械斷路器開關速度的限制難題,實現了電氣與機械結構的模塊化設計,開發出了世界上第一臺200千伏高壓直流斷路器,在國內外建成了自主產權保護體系(已申請5項國際專利和30余項中國發明專利)。研制的高壓直流斷路器可以在3毫秒內斷開一條200千伏高壓直流輸電線路產生的高達15kA故障電流,其速度比人類眨眼的瞬間還要快100倍。此前,國際跨國公司ABB和ALSTOM也相繼完成了80千伏/5ms/9kA和120kV/5.5ms/5.2kA原理樣機的研制工作。

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