鳞片式链条炉排在结构、制造、安装及运行操作等方面存在一些问题和故障。

There exist some unavoidable problems in structure, manufacture, installation and operation to scale chain grate, therefore, produce some breakdown in the operation.

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针对配电网故障区间定位的问题，利用配电网的结构和运行状态，提出一种基于开关有向树型网络描述模型。

A directional tree model based on switches is proposed for fault section locating in distribution network by using system Structure and operation status.

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现场测试表明：TFDES结构合理，推理正确，能有效诊断运行中变压器的内部故障。

Field tests showed that the TFDES is reasonable in structure, correct in deduction mechanism and effective in diagnosing the internal faults of transformer in operation.

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