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諧波治理

南京河西兒童醫院

文字:[大][中][小] 2015-7-14    瀏覽次數:3073    

UAPF在醫院醫療行業的應用

南京河西兒童醫院

 基本情況介紹

現代化醫療機構為提高醫療服務水平,不斷引入新型、復雜的各種先進醫療設備如核磁共振、CT機、X光機、血透機等,同時各種各種節能照明設備、變頻空調、電梯設備等大量投入使用。這些設備為非線性設備,在運行過程中會產生大量的高次諧波、對配電系統和醫療設備造成一定的干擾。同時這些先進的醫療設備都具有高檔的計算機部件和大量的高靈敏的微電子器件,對供電電源的電能質量要求很高,嚴重的電力諧波問題會導致醫療設備的損壞甚至導致醫療事故發生。

南京河西兒童醫院3#變電下某臺變壓器主要是給醫院醫技樓負荷提供動力的,核磁共振、CT機、X光機等非線性負荷在運行過程中產生了大量的諧波,因此需要進行諧波治理。現場使用了一套100A的有源電力濾波器進諧波治理。安徽佑賽科技有限公司技術人員通過在現場對使用有源電力濾波器治理前后的測量,并對測試數據進行分析,治理起到了較好的效果。

 測量數據匯總

通過在現場對負荷進行測試,在使用有源電力濾波器進行諧波治理前后A、B、C三相電流測量結果整體情況匯總如下如表2-1所示。

表二-1 補償前后測量數據匯總

 治理前后對比

使用電能質量分析儀(CA8835)對變壓器總進線柜進行了測試,由圖中可以直觀的看出,補償后系統電流有效值得到了降低,且電流畸變率以及各次諧波含量大大降低。UAPF的輸出電流成分與負荷電流的諧波成分基本相同,很好的實現了濾波功能。

           

             

 

  治理解決方案

南京河西兒童醫院由于是新建設的項目,因此在項目圖紙設計之初,我公司電氣工程師根據各次負載的性質然后依據諧波估算軟件以及類似項目的工程經驗,針對3變電所某臺變壓器選用100A的有源電力濾波器,同時變壓器下帶有大量的單相負荷需選用四橋臂的APF。即選用UAPF-L4100-0.4的有源電力濾波器治理諧波

 其它典型案例

關于UAPF在醫院醫療行業的應用,同類案例包括:南京解放軍人民醫院、南京鼓樓醫院以及鹽城市建湖區第二人民醫院等。


 

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