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長三角一體化發展示范區首個中壓柔直互聯項目投運

發布時間:2024-05-30

關鍵詞:配電網、電網建設、智能化

5月22日,江蘇吳江—浙江嘉善兩地跨省配電網柔性互聯裝置投運,實現配電網跨省“無時差”互濟轉供。這是該項技術在長三角生態綠色一體化發展示范區內首次應用。

2019年10月,國務院批復在蘇州吳江、上海青浦、浙江嘉善“兩區一縣”建立一體化發展示范區。在長三角一體化發展背景下,三地已逐步實現配電網互聯互通,多次跨省送電,電力保供能力明顯提升。

據介紹,因江蘇省、浙江省電網的電壓頻率、幅值、相角等存在差異,配電網不能直接互聯,當一方檢修或因故障停電時,另一方才能通過柱上開關連通線路,臨時為對方送電。這存在轉供過程中短時停電問題。為此,蘇州供電公司于2021年3月啟動跨省配網背靠背柔性互聯裝置研發,并在吳江區與嘉善縣10千伏配電網聯絡線投入試點應用。

該配電網互聯裝置是一套交直流轉換設備,功率為5000千瓦,具有平衡負荷、故障自愈等功能,能實現電力毫秒級跨省互濟。據悉,蘇州供電公司還在聯絡線上加裝了智能開關,提升配網自動化水平。


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