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變電站調壓調容型無功補償裝置
        我公司開發的WZDK-10系列變電站調壓調容型無功補償裝置突破傳統無功補償理念,改電容器分組投切為一次性固定投入,通過改變電容器端電壓達到改變補償容量的目的,解決了電容器投切中的過電壓、涌流等技術問題。改滯后調節為實時調節。
        WZDK-10系列變電站調壓調容型無功補償裝置的推廣應用將把電壓無功管理水平大大提高,可以大幅度降低線損,提高供電企業的經濟效益,在不新建電廠的情況下增加供電能力,為解決目前國內電力緊張作出貢獻。
裝置的工作原理
        WZDK-10系列變電站調壓調容型無功補償裝置采用電容器固定接入,在母線和電容器之間加裝自耦調壓器,其輸入端接母線,輸出端接電容器,通過調整自耦調壓器的輸出電壓控制電容器無功功率的輸出,實現電壓無功自動補償。根據 Q=2πfcu*U原理,電容器不變,端電壓從100%Ue降到60%Ue,其輸出容量就可在(100%~36%)×QH下進行調節,改變電壓調節精度就可以改變容量調節精度。
裝置的主要優點
1、節能效果明顯
      由于不采用投切方式,電容器投切中無投切引起的充放電問題,調節可以隨系統無功變化隨時進行,不需要延時,可以實現適時調節,保證系統隨時都在工作狀態,有效提高功率因數,降低線損。該產品能把變電站功率因數有效提高至0.95~0.98之間,減少發熱損耗。
2、解決了因電容器投切引起的過電壓主、涌流等問題
      由于電容器固定接入,不進行分組,不進行投切,其輸出容量可以根據系統需要進行精細調節,解決因電容器投切引起的過電壓、涌流等問題;并可以選擇合適的投入電壓,有效降低投入電容器的涌流,減少對電網和電容器的沖擊,本裝置無諧波放大。
     3、延長電容器的使用壽命
     以電壓調節器調節電容器端電壓,取消了電抗器,使電容器長期穩定工作在額定電壓以下,延長了電容器的壽命。由于解決電容器過電壓問題,可以選擇較低電壓的電容器,減少了電容投資。
     4、裝置自動化程序高,運行可靠,操作方便
     微機控制器采用獨特的電路設計,裝置運行可靠;同時采用大屏幕液晶顯示器,圖形界面,中文顯示和操作提示,使用簡單方便。
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