摘要
在中国石化上海石油化工股份有限公司新建110 kV系统启动过程中,需要利用环流对差动保护进行带负荷测试。文章对系统开口电压和变压器变比差异两种环流产生方式进行了实例计算。计算结果表明:本系统中的开口电压不能为差动测试提供足够的环流,而变比差异法则可以轻松做到,具有很强的适用性。
During the starting procedure of newly built 110 Ltd. ,loading test need to be made on differential p made on the two circumfluence generating modes difference. Result of calculation showed that ope kV system in SINOPEC Shanghai Petrochemical Co. , rotection with circumfluence. Example calculation was of system open voltage and transformer voltage ratio n voltage of the system could not provide enough circumfluence for differential test, while transformer voltage ratio difference method could, which had high adaptability.
出处
《石油化工技术与经济》
2013年第4期39-43,共5页
Technology & Economics in Petrochemicals
关键词
变压器
环流
差动保护
负荷测试
transformer
circumfluence
differential protection
loading test
