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　     串聯電容 器也是一種無功補償設備通常串聯在330kV及以上的高壓線路中，其 主要作用是從補償（減少）電抗的角度來改善系統電壓，以減少電能損耗，提高系統的穩定性。

　　串聯電容器廣泛應用于電力輸電、配電系統中，特別是長距離、大容量的輸電系統中，提高輸送容量，提高系統的穩定性，改善系統的電壓調整率，同時提高 系統的功率因數，降低線路損耗。

　　串聯電容器作用
　　串(chuan)(chuan)聯電(dian)(dian)容(rong)(rong)(rong)(rong)(rong)器的等(deng)效電(dian)(dian)容(rong)(rong)(rong)(rong)(rong)量(liang)的倒數(shu)等(deng)于各(ge)個電(dian)(dian)容(rong)(rong)(rong)(rong)(rong)器的電(dian)(dian)容(rong)(rong)(rong)(rong)(rong)量(liang)的倒數(shu)之(zhi)和：1/C總=1/C1+1/C2+……+1/Cn。電(dian)(dian)容(rong)(rong)(rong)(rong)(rong)并聯可增大(da)電(dian)(dian)容(rong)(rong)(rong)(rong)(rong)量(liang)，串(chuan)(chuan)聯減小(xiao)。比如(ru)手(shou)頭沒有大(da)電(dian)(dian) 容(rong)(rong)(rong)(rong)(rong)，只(zhi)有小(xiao)的，就(jiu)可以(yi)并起來(lai)用(yong)，反之(zhi)，沒有小(xiao)的就(jiu)可以(yi)用(yong)大(da)的串(chuan)(chuan)起來(lai)用(yong)。串(chuan)(chuan)聯電(dian)(dian)容(rong)(rong)(rong)(rong)(rong)器也(ye)是一種無(wu)功補(bu)償設備通常串(chuan)(chuan)聯在330kV及以(yi)上的超高(gao)壓線路中(zhong)，其主要作用(yong)是從 補(bu)償（減少(shao)）電(dian)(dian)抗的角度來(lai)改善系統電(dian)(dian)壓，以(yi)減少(shao)電(dian)(dian)能損耗(hao)，提高(gao)系統的穩(wen)定性。