Abstract : in view of the disadvantages of the commonly used prophylactic repair mode for such power equipments as generators and transformers , the significance of developing state monitoring and fault diagnosis technique is analyzed , and the state ? of ? the ? art and existing problems of the technique are described 摘要:針對發(fā)電機、變壓器類電力設(shè)備普遍采用的預(yù)防性定期檢修方式所存在的弊端,分析了發(fā)展狀態(tài)監(jiān)測和故障診斷技術(shù)的意義,并對該技術(shù)在國內(nèi)外的發(fā)展現(xiàn)狀和存在問題進行了介紹。