采用分层多源信息融合的电网故障诊断方法  

Hierarchical Fault Diagnosis Approach for Power Grid with Information Fusion Using Multi-data Resources

作　　者：郭创新[1] 高振兴[1] 刘毅[2] 彭明伟[3] 毕建权[1] 杨健[4] 骆玉海 

机构地区：[1]浙江大学电气工程学院,杭州310027 [2]华东电网有限公司,上海200002 [3]浙江省电力设计院,杭州310027 [4]上海市电力公司,上海200080 [5]烟建集团有限公司,烟台264000

出　　处：《高电压技术》2010年第12期2976-2983,共8页High Voltage Engineering

基　　金：国家自然科学基金(50677062);新世纪优秀人才支持计划(NCET-07-0745);国家高技术研究发展计划(863计划)(2008AA05Z210);教育部博士点基金(20090101110058)~~

摘　　要：鉴于调度自动化水平及通信、广域测量技术的发展,提出了一种分层多源信息融合的电网故障诊断方法,以开关量诊断层和多源信息融合诊断层2个层次,在基于SCADA系统开关量实现电网单一故障快速诊断的同时,综合开关量信息与故障录波器及WAMS的电气量信息,着力解决保护、断路器拒动、误动造成的多元件停电的故障诊断。仿真算例计算表明,此方法的分层模式增强了故障诊断针对性,并在多源信息融合诊断时减少了对电气量数据的需求,能有效降低保护、开关拒动误动对电网故障诊断的影响,提高了准确度,具有良好的工程实用价值。Considering the development of power system automation,communications and wide area measurement technology,we put forward a hierarchical fault diagnosis approach for power grid with information fusion based on multi-data resources.The approach is divided into two hierarchies：the first diagnosis level based on switching-status data,and the second one bases on information fusion of multi-data resources.While the fault diagnosis of single element of the power grid is implemented based on switching-status data from SCADA,so as to diagnose multi-component outage combining switching-status data from SCADA and continuous-time data derived from fault recorder and WAMS.Simulation and calculations show that,the proposed approach definitely heightens the pertinence of diagnosis by using the hierarchical mode,and reduces the amount of electrical continuous-time data while effectively lowers the influence resulted from relay or breaker＇s mal-operation or refuse-operation.The presented approach significantly improves the diagnostic accuracy.

关 键 词：分层故障诊断 小波能量 改进RBF神经网络 改进D-S证据理论 同步向量测量单元 信息融合 模糊C均值聚类法 

分 类 号：TM727[电气工程—电力系统及自动化]