常州信息职业技术学院学报
常州信息職業技術學院學報
상주신식직업기술학원학보
JOURNAL OF CHANGZHOU COLLEGE OF INFORMATION TECHNOLOGY
2012年
4期
38-40
,共3页
变压器%空载投运%励磁涌流%故障电流
變壓器%空載投運%勵磁湧流%故障電流
변압기%공재투운%려자용류%고장전류
transformer%unloaded start-up%magnetizing inrush current%fault current
变压器的继电保护系统在其发生故障时跳闸断电对其进行保护。大型变压器在空载投运的过程中励磁涌流使相关的保护产生动作，投运不成功。但此时的变压器本身没有故障。通过对变压器空载投运过程中磁场和电流的分析发现，励磁涌流与故障造成的大电流是有差别的。采取相应的办法和措施，可以有效防止这种无故障跳闸的发生。
變壓器的繼電保護繫統在其髮生故障時跳閘斷電對其進行保護。大型變壓器在空載投運的過程中勵磁湧流使相關的保護產生動作，投運不成功。但此時的變壓器本身沒有故障。通過對變壓器空載投運過程中磁場和電流的分析髮現，勵磁湧流與故障造成的大電流是有差彆的。採取相應的辦法和措施，可以有效防止這種無故障跳閘的髮生。
변압기적계전보호계통재기발생고장시도갑단전대기진행보호。대형변압기재공재투운적과정중려자용류사상관적보호산생동작，투운불성공。단차시적변압기본신몰유고장。통과대변압기공재투운과정중자장화전류적분석발현，려자용류여고장조성적대전류시유차별적。채취상응적판법화조시，가이유효방지저충무고장도갑적발생。
Relay protection system is used for protecting transformers malfunction. As an unloaded transformer starts-up, it can give birth to magnctizing inrush current which could lead to unsuccessful start-up. Meanwhile, the transformer is on the condition of trou-ble-free operation. By analyzing magnetic field and current of the transformer, the difference between magnetizing inrush cur-rent and fault current can be found. By adopting certain countermeasures, the trouble free jump of the transformer can be ef-fectively prevented.
