Open Access
ARTICLE
Abstract
At present, the leakage rate of the water distribution network in China is still high, and the waste of water resources
caused by water distribution network leakage is quite serious every year. Therefore, the location of pipeline leakage
is of great significance for saving water resources and reducing economic losses. Acoustic emission technology is
the most widely used pipeline leak location technology. The traditional non-stationary random signal de-noising
method mainly relies on the estimation of noise parameters, ignoring periodic noise and components unrelated
to pipeline leakage. Aiming at the above problems, this paper proposes a leak location method for water supply
pipelines based on a multivariate variational mode decomposition algorithm. This method combines the two
parameters of the energy loss coefficient and the correlation coefficient between adjacent modes, and adaptively
determines the decomposition mode number K according to the characteristics of the signal itself. According to
the correlation coefficient, the effective component is selected to reconstruct the signal and the cross-correlation
time delay is estimated to determine the location of the pipeline leakage point. The experimental results show
that this method has higher accuracy than the cross-correlation method based on VMD and the cross-correlation
method based on EMD, and the average relative positioning error is less than 2.2%.
Keywords
Cite This Article
Fang, Q., Wang, H., Xie, C., Chen, J. (2023). Research on Leak Location Method of Water Supply Pipeline Based on MVMD.
CMES-Computer Modeling in Engineering & Sciences, 134(2), 1237–1250.