一、儲能變流器的工作原理

儲能變流器的工(gong)作原理是交、直流(liu)側可控(kong)的四象限運行的變流(liu)裝(zhuang)置，實現對(dui)電(dian)(dian)能(neng)的交直流(liu)雙(shuang)向轉(zhuan)換。該原理就是通過(guo)微網監控(kong)指令進行恒(heng)功率或(huo)恒(heng)流(liu)控(kong)制，給(gei)電(dian)(dian)池充(chong)電(dian)(dian)或(huo)放電(dian)(dian)，同(tong)時平滑風電(dian)(dian)、太陽(yang)能(neng)等波(bo)動性電(dian)(dian)源(yuan)的輸(shu)出。PCS采用雙(shuang)閉環控(kong)制和(he)SPWM脈沖(chong)調(diao)制方法，能(neng)夠精確快速地調(diao)節輸(shu)出電(dian)(dian)壓、頻率、有功和(he)無(wu)功功率。

PCS儲能(neng)(neng)變流(liu)器(qi)可(ke)以通過快速的(de)電(dian)(dian)(dian)(dian)能(neng)(neng)存儲來響應(ying)負(fu)荷的(de)波動(dong)，吸收多余(yu)的(de)能(neng)(neng)量或補充缺額的(de)能(neng)(neng)量，實現大功率(lv)(lv)的(de)動(dong)態調節，很好地適應(ying)頻(pin)率(lv)(lv)調節和電(dian)(dian)(dian)(dian)壓功率(lv)(lv)因數的(de)校(xiao)正，從而提高(gao)系(xi)(xi)統(tong)(tong)運行(xing)的(de)穩(wen)定性。廣泛應(ying)用于電(dian)(dian)(dian)(dian)力系(xi)(xi)統(tong)(tong)、軌道交(jiao)通、軍工、石油機械、新能(neng)(neng)源汽車、風力發電(dian)(dian)(dian)(dian)、太陽能(neng)(neng)光伏等(deng)領域，在電(dian)(dian)(dian)(dian)網(wang)削峰填谷、平滑新能(neng)(neng)源波動(dong)，能(neng)(neng)量回收利用等(deng)場合(he)實現能(neng)(neng)量雙向流(liu)動(dong)，對電(dian)(dian)(dian)(dian)網(wang)電(dian)(dian)(dian)(dian)壓頻(pin)率(lv)(lv)主動(dong)支(zhi)撐，提高(gao)供(gong)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)能(neng)(neng)質(zhi)量。

與常規(gui)電(dian)源相比(bi)，大規(gui)模儲能(neng)電(dian)站能(neng)夠適應負荷(he)的(de)(de)快速變化，對提(ti)高電(dian)力系統安全穩定運(yun)行水平、電(dian)網供電(dian)質量(liang)和可靠性起到(dao)了重(zhong)要(yao)作用，同時還可以(yi)優化電(dian)源結構(gou)，實現綠色環保，達到(dao)電(dian)力系統的(de)(de)總體節能(neng)降(jiang)耗，提(ti)高總體的(de)(de)經濟效(xiao)益。

二、儲能變流器的作用和優勢

1、突破天氣變化的局限性

由于(yu)儲(chu)能變流器能夠將交(jiao)流電(dian)轉(zhuan)換為(wei)(wei)直流電(dian)儲(chu)存在(zai)蓄電(dian)池內(nei)，并在(zai)斷電(dian)后將蓄電(dian)池內(nei)的直流電(dian)轉(zhuan)換為(wei)(wei)交(jiao)流電(dian)供用戶(hu)使用，這就在(zai)很(hen)大(da)程(cheng)度(du)上降低了(le)天氣(qi)狀況對發電(dian)穩(wen)定性(xing)的影響(xiang)，能夠大(da)大(da)提升電(dian)網的穩(wen)定性(xing)和品質(zhi)。

2、擁有更高的用電效率

與并網(wang)光(guang)伏逆變(bian)器(qi)相比，儲能變(bian)流器(qi)用(yong)電效率更高，不僅能夠突破天氣(qi)狀況、時間等局限性，解決并網(wang)光(guang)伏逆變(bian)器(qi)存(cun)在(zai)的(de)問題，還能為用(yong)戶提供更加穩定、持久的(de)電能，避免用(yong)電系(xi)統故障帶來的(de)不便(bian)和麻煩，這(zhe)也是更多(duo)用(yong)戶選擇這(zhe)種(zhong)逆變(bian)器(qi)的(de)重(zhong)要原因所在(zai)。

3、擁有較高的穩定性

在(zai)電(dian)(dian)(dian)網(wang)(wang)系(xi)統(tong)(tong)故障的(de)(de)(de)情(qing)況下，儲能(neng)變流器能(neng)夠將(jiang)儲存(cun)的(de)(de)(de)直(zhi)(zhi)(zhi)流電(dian)(dian)(dian)直(zhi)(zhi)(zhi)接轉(zhuan)換(huan)為(wei)交流電(dian)(dian)(dian)供電(dian)(dian)(dian)網(wang)(wang)系(xi)統(tong)(tong)使(shi)用(yong)(yong)，受外界因素的(de)(de)(de)影響較小，能(neng)夠大大降低用(yong)(yong)電(dian)(dian)(dian)成本，具有較高的(de)(de)(de)穩定性。當處于用(yong)(yong)電(dian)(dian)(dian)高峰期時，儲能(neng)變流器會將(jiang)太陽(yang)能(neng)直(zhi)(zhi)(zhi)流電(dian)(dian)(dian)轉(zhuan)換(huan)為(wei)交流電(dian)(dian)(dian)并(bing)入(ru)電(dian)(dian)(dian)網(wang)(wang)供廣大用(yong)(yong)戶使(shi)用(yong)(yong)，而處于用(yong)(yong)電(dian)(dian)(dian)低谷期時，儲能(neng)變流器又會將(jiang)電(dian)(dian)(dian)網(wang)(wang)中的(de)(de)(de)交流電(dian)(dian)(dian)轉(zhuan)換(huan)為(wei)直(zhi)(zhi)(zhi)流電(dian)(dian)(dian)儲存(cun)起來，能(neng)夠實現直(zhi)(zhi)(zhi)流電(dian)(dian)(dian)和交流電(dian)(dian)(dian)的(de)(de)(de)雙(shuang)向轉(zhuan)換(huan)，而且能(neng)夠為(wei)斷電(dian)(dian)(dian)時的(de)(de)(de)用(yong)(yong)電(dian)(dian)(dian)提供強有力的(de)(de)(de)保障。

除了以上作用外，儲能變流器還具有能夠為電網提供更加穩定、諧波含量較少的純凈電流，這不僅符合當今社會節能減排的趨勢和要求，更加提升了電網的穩定性和品質。總而言之，儲能變流器能夠突破傳統光伏逆變器的局限性，為電網系統提供高品質的電能的同時，還能降低用電成本，提高用電效率，這些優勢和作用也是儲能變流器能(neng)夠在市(shi)場上占據一定優勢(shi)的前提和保(bao)障。