粗糙集理论在IEC-60599三比值故障诊断决策规则中的应用  

APPLICATION OF DECISION RULES FOR IEC-60599 THREE-RATIO FAULT DIAGNOSIS BASED ON ROUGH SET THEORY

作　　者：蔡金锭[1] 王少芳[1] 

机构地区：[1]福州大学电气工程与自动化学院,福建省福州市350002

出　　处：《中国电机工程学报》2005年第11期134-139,共6页Proceedings of the CSEE

基　　金：福建省教育厅基金项目(JB03060)。

摘　　要：基于粗糙集理论提出一种改进的新导则IEC三比值的变压器故障诊断决策新方法。文中从实际诊断中出发首次将IEC-60599三比值故障诊断表编写成对应的逻辑编码表,然后应用粗糙集理论构造决策表并对决策表进行约简,最后建立改进的新导则IEC-60599三比值故障诊断决策规则。这种改进的新导则IEC-60599三比值诊断方法使用简单,便于操作。同时它还扩展了IEC-60599三比值的故障诊断范围、提高了故障诊断能力和复合故障的识别能力。在诊断信息不完备的情况下,可以避开遗漏信息实现较为准确的故障诊断。实际诊断结果表明,它的故障诊断正确率比IEC-60599三比值诊断法高达19.7%左右。这种改进的新导则IEC-60599三比值故障诊断决策规则简单实用,便于技术人员的现场使用,在实际工程中具有实用价值。An improved IEC-60599 three-ratio fault diagnosis technique for power transformer is proposed, which is based on the Rough Set Theory. Firstly, a logical diagnostic table of IEC-60599 is presented, and a decision table can be constructed by applying the Rough Set Theory based on the IEC-60599 three-ratio fault diagnosis table. Then, the reduction of the decision table will be obtained, and an improved new IEC-60599 three-ratio fault diagnosis decision table for transformer fault diagnosis can be acquired. The results of the experiment demonstrate that the improved new IEC-60599 three-ratio fault diagnosis technique extends the coding area of the earlier IEC-60599 three-ratio fault diagnosis technique, the actual malfunction diagnosis ability is proved and fault diagnosis accuracy is higher compared with the earlier IEC-60599 three-ratio diagnosis technique at the incompleteness and complexity of fault diagnosis for power transformer. The method is easily used to engineering technician. All these properties can be applied in practice.

关 键 词：诊断决策规则 粗糙集理论 比值 应用 故障诊断 变压器故障 诊断方法 识别能力 复合故障 诊断能力 诊断信息 现场使用 技术人员 实用价值 决策表 导则 IEC 编码表 诊断法 正确率 约简 

分 类 号：TP277[自动化与计算机技术—检测技术与自动化装置] TP18[自动化与计算机技术—控制科学与工程]