Fault line selection algorithm in small current grounding systems based on à trous algorithm

作者：Zhang Zhongxiao; Miao Shihong^*; Lin Xiangning; Liu Pei

来源：Automation of Electric Power Systems, 2011, 35(1): 66-70.

• Fault line detection
• Fault measure
• Single reconstruction
• Small current grounding
• Trous algorithms

With detailed comparative analysis of traditional fault line selection algorithms, this paper analyzes characteristics of transient zero sequence current and presents a fault line selection algorithm. This new algorithm extracts the effective band fault zero sequence current information through the frequency-dividing characteristics and single reconstruction of a` trous algorithm. Fault measures function is also presented to reflect the effectiveness of the proposed fault line selection algorithm. Through theoretical analysis and ATP simulations, the proposed method is validated to be effective and reliable for various small current grounding systems with different neutral grounding modes. ? 2010 State Electric Power Research Institute Press.

• 出版日期2011
• 单位华中科技大学