一种关联层次赋权与离散模糊数的变电设备评估方法  

Evaluation Model of Substation Equipment Based on Hierarchical Weighting and Discrete Fuzzy Number Theory

作　　者：龚浩 罗传仙[1,2] 王雅倩 许晓路[1,2] 周正钦 倪辉 GONG Hao;LUO Chuan-xian;WANG Ya-qian;XU Xiao-lu;ZHOU Zheng-qin;NI Hui(Nari Group Corporation State Grid Electric Power Research Institute,Nanjing 210003,China;Wuhan Nanrui Limited Company of State Grid Electric Power Research Institute,Wuhan 430074,China;School of Electrical Engineering and Automation,Wuhan University,Wuhan 430072,China)

机构地区：[1]南瑞集团有限公司(国网电力科学研究院有限公司),南京210003 [2]国网电力科学研究院武汉南瑞有限责任公司,武汉430074 [3]武汉大学电气与自动化学院,武汉430072

出　　处：《科学技术与工程》2021年第4期1394-1401,共8页Science Technology and Engineering

基　　金：工信部智能制造综合标准化与新模式应用项目(524625180050)。

摘　　要：为了解决变压器状态评价指标的单一性导致其状态评价可靠性低的问题,提出一种基于层次赋权与离散模糊数的变压器状态评估模型。首先,通过构建层次分析法赋权模型,关联变压器设备多个关键指标形成评价体系。进一步地,为了更合理地区分评价等级,降低不同等级之间的交差性和相似性,采用多等级的模糊语言描述变压器状态,将基于多指标的设备评价通过离散模糊矩阵映射到隶属度空间,再根据隶属度原则确定设备状态。最后在实际案例上测试。结果表明,模型评价等级基本与实际变压器状态一致,验证了基于上述模型的评价结果能够合理反应变压器状态,进而为电力系统设备评价决策、检修、延长设备使用寿命等提供参考依据。At present,the evaluation index of transformer state is simple and monotonous,leading to low reliability of the evaluation.To solve the problem,a transformer state evaluation model based on hierarchical weighting and discrete fuzzy numbers was proposed.First,an evaluation system was formed by constructing an analytic hierarchy model to correlate multiple key indicators of transformer equipment.Secondly,to distinguish the evaluation grades more reasonably and reduce the intersection and similarity between different grades,the multi-level fuzzy language was used to describe the state of the transformer,and the equipment evaluation based on multi-index was mapped to the membership space.Finally,the equipment status was determined according to the principle of membership.The test on real cases showed that the model evaluation level was consistent in overall with the actual transformer state.It was verified that the evaluation results using our model could reasonably reflect the transformer state,thus providing a reference for power system equipment evaluation,decision-making,maintenance,and extension of equipment life.

关 键 词：智能电网 油浸式变压器 离散模糊矩阵 状态评价 

分 类 号：TM401.2[电气工程—电器]