中国电机工程学报2011，Vol.31Issue(7)：102-111,10.
基于可拓融合的±800kV直流输电线路雷击干扰识别方法
Identification of Lightning Disturbance in UHVDC Transmission Lines Using Extension Theory
摘要
Abstract
For the lightning stroke fault or ground fault on ±800 kV ultra high voltage direct current (UHVDC) transmission line, because there is a fault current lumped parameter access to the earth, the voltage waveform observed at the protection position decreases suddenly and crosses repeatedly the zero line in 5 ms time window. The correlation degree of transient component and pole voltage and the average voltage value in the time window are both small. For no-fault lightning stroke, there is no fault current accessing to the earth, so the impulse response caused by lightning is much less than the value of the pole voltage. The voltage waveform at the protection position changes up and down around the direct voltage linc in the 5 ms time window and decays to the pole voltage line at last. The correlation degree is calculated using the former 2 ms samples and the average value is calculated using the next 3 ms samples, these two characteristics are inosculated by extension theory and information fusion to identify the non-fault lighting and select the fault pole.Simulations results show that the algorithm is effective.关键词
电力系统/±800kV直流/雷击干扰/相关度/均值/可拓融合/采样值计算分类
信息技术与安全科学引用本文复制引用
束洪春,张斌,张广斌,刘可真,孙士云..基于可拓融合的±800kV直流输电线路雷击干扰识别方法[J].中国电机工程学报,2011,31(7):102-111,10.基金项目
国家自然科学基金项目(50977039,50847043,90610024,50467002,50347026) （50977039,50847043,90610024,50467002,50347026）
云南省自然科学基金重点项目(2005F0005Z) （2005F0005Z）
云南省科技攻关项目(2003GG10). （2003GG10）
