电力系统保护与控制2011，Vol.39Issue(11)：49-55,61,8.
一种基于D-S证据理论和稳态量的配电网故障选相方法研究
A fault phase selection approach in neutral noneffectively grounded system based on D-S evidence theory and stationary component
摘要
Abstract
Taking the fault in neutral isolated system for example, the amplitude and phase relationships among positive-sequence,negative-sequence and zero-sequence fault components of voltage and current are analyzed.On the basis of that, the characteristic quantities, which can identify fault phase, are defined.Afterward, they are used to establish the decision tree of fault phase selection approach.The basic probability assignments (BPAs) of the characteristic quantities are defined.So, the fault phases are selected through fusing the characteristic quantities by D-S evidence theory.Through establishing the simulation model in PSCAD/EMTDC environment, the proposed approach is verified in simulation environment.Moreover, the adaptability of proposed approach to neutral resonant grounded system, different Signal Noise Ratios (SNRs) and arc faults is thoroughly studied.The simulation results show that the proposed scheme possesses high correctness and strong anti-noise ability, and it is not influenced by the change of neutral grounding style and non-linear transition fault resistances induced by arc.关键词
故障选相/中性点非有效接地系统/稳态分量/D-S证据理论Key words
fault phase selection/ neutral noneffectively grounded system/ stationary component/ D-S evidence theory分类
信息技术与安全科学引用本文复制引用
张钧,何正友,臧天磊..一种基于D-S证据理论和稳态量的配电网故障选相方法研究[J].电力系统保护与控制,2011,39(11):49-55,61,8.基金项目
国家自然科学基金项目(50877068) （50877068）
教育部优秀新世纪人才支持计划项目(NCET-06-0799) （NCET-06-0799）
