PURE FREQUENCY DOMAIN ANALYSIS FOR DETECTING PIPELINE LEAKS
Consider the effect of unsteady friction and leaks, the frequency water hammer model which suitable for various different boundary conditions for water diversion projects is established, the discrete boundary conditions and measured data are transformed in frequency domain by laplace transform. A newly developing method called pure frequency domain analysis for leak detection in pipelines is proposed. In the study, transient signals are generated by sharp closure of a valve from the small constant opening. The genetic algorithm is integrated into the method to calibrate the location and the quantity of leakage. The main distinction of presented method includes two points: the boundary conditions are not constrained, and the leak detection is analyzed in the entire frequency domain without calculation the inverse Fourier transformation of any point. The proposed leak detection method shows the potentials for being applied to the pipeline system with a single leak.
leak detection frequency domain unsteady friction genetic algorithm
Xinlei Guo Kailin Yang
China Institute of Water Resources and Hydropower Research, A1,Fuxin Road,Beijing, China
国际会议
第16届亚太地区国际水利学大会暨第3届水工水力学国际研讨会(16th IAHR-APD Congress and 3rd Symoposium of IAHR-ISHS)
南京
英文
1699-1703
2008-10-20（万方平台首次上网日期，不代表论文的发表时间）