摘  要：針對煤礦電網(wǎng)中由于變頻器的大量使用造成的供電質(zhì)量降低問題，分別介紹了幾種目前廣泛應(yīng)用的無功補償技術(shù)的系統(tǒng)原理和技術(shù)特點。并通過一個具體的設(shè)計范例說明對煤礦井下進行無功補償技術(shù)改造后有效的提高了電網(wǎng)功率因數(shù)，改善了電能質(zhì)量，帶來明顯的經(jīng)濟效益。 關(guān)鍵詞：無功補償；煤礦井下；變頻器 Abstract: Aiming at reducing the quality of power supply caused by a large number of frequency converters used in coal mine power grid, the system principle and technical characteristics of reactive power c[登陸后可查看全文]