變(bian)頻恒壓(ya)供水系統是通過對水泵電機無級調速，結合用水量及水壓變化，再經過微機檢測、運算，來調控水泵轉速，最終達到保持水壓恒定的需求，是目前科學合理的節能供水系統，在穩定性、可靠性、自動化程度等方面都比傳統供水系統有優勢。

恒壓供水在泵站供水中可完成以下功能：

（1）維持水壓恒定

（2）控制系統可(ke)手動(dong)/自動(dong)運行

（3）多臺泵自動切換(huan)運行

（4）系(xi)統(tong)睡眠與喚(huan)醒(xing)，當外界停止用(yong)水時，系(xi)統(tong)處于(yu)睡眠狀態，直至有用(yong)水需求時自動喚(huan)醒(xing)

（5）在線調整PID參數；

（6）泵組及線路保護(hu)檢測報(bao)警，信號顯示(shi)等

變(bian)頻恒(heng)(heng)壓(ya)(ya)供(gong)(gong)(gong)(gong)水(shui)(shui)(shui)系統根據管網(wang)水(shui)(shui)(shui)壓(ya)(ya)或用戶用水(shui)(shui)(shui)流(liu)量(liang)來(lai)設(she)定參數，通過(guo)微(wei)機控制變(bian)頻器的輸出頻率(lv)(lv)(lv)來(lai)自動調節(jie)水(shui)(shui)(shui)泵電機的轉速(su)(su)，實現管網(wang)水(shui)(shui)(shui)壓(ya)(ya)的閉(bi)環調節(jie) (PID)，達到供(gong)(gong)(gong)(gong)水(shui)(shui)(shui)系統自動恒(heng)(heng)穩(wen)于設(she)定壓(ya)(ya)力值(zhi)的目(mu)標，具體就是用水(shui)(shui)(shui)量(liang)增(zeng)加時，頻率(lv)(lv)(lv)升高(gao)，水(shui)(shui)(shui)泵轉速(su)(su)加快(kuai)，供(gong)(gong)(gong)(gong)水(shui)(shui)(shui)量(liang)增(zeng)大;用水(shui)(shui)(shui)量(liang)減少，頻率(lv)(lv)(lv)降低(di)，水(shui)(shui)(shui)泵轉速(su)(su)減慢，供(gong)(gong)(gong)(gong)水(shui)(shui)(shui)量(liang)相應減小，這般即(ji)保證了供(gong)(gong)(gong)(gong)水(shui)(shui)(shui)效率(lv)(lv)(lv)用戶對水(shui)(shui)(shui)壓(ya)(ya)和(he)水(shui)(shui)(shui)量(liang)的要(yao)求，也達到了提(ti)高(gao)供(gong)(gong)(gong)(gong)水(shui)(shui)(shui)品質和(he)供(gong)(gong)(gong)(gong)水(shui)(shui)(shui)效率(lv)(lv)(lv)的目(mu)的。