电力系统自动化Issue(22)：73-78,6.DOI:10.7500/AEPS201301240
变压器状态评估多层次不确定模型
A Multilayer Uncertain Transformer Condition Assessment Model
梁永亮 1李可军 1牛林 2赵建国 1任敬国 3李昕伟1
作者信息
- 1. 山东大学电气工程学院，山东省济南市 250061
- 2. 国网技术学院，山东省济南市 250002
- 3. 国网技术学院，山东省济南市 250002
- 折叠
摘要
Abstract
A multilayer transformer condition assessment model is built by taking both fuzziness and randomness in uncertainty into consideration.The framework of assessment is divided into three layers of subsystem assessment,system assessment and overall assessment,respectively.In the first layer of subsystem assessment,the relationship between quantitative index relative deterioration degrees and grades is expressed in the normal cloud model.Then the matter-element cloud model provides the association degrees between the quantitative indices and grades. By referring to the optimal weights,the condition assessment results of all subsystems in the quantitative assessment system are obtained.Finally random processing and Bayesian approximation of the original evidence is performed.The integral assessment results are obtained by merging the assessment results of the subsystems and systems based on the D-S evidence theory.The feasibility of the model proposed is verified through field test data,providing transformer condition assessment with a new line of thought.关键词
最优权重/物元理论/云模型/证据理论/状态评估/不确定性Key words
optimal weight/matter-element theory/cloud model/evidence theory/condition assessment/uncertainty引用本文复制引用
梁永亮,李可军,牛林,赵建国,任敬国,李昕伟..变压器状态评估多层次不确定模型[J].电力系统自动化,2013,(22):73-78,6.
