Leakage Detection and Leakage Location In Supply Networks
First Claim
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1. A method for leakage detection and leakage location in an area of a supply network, comprising:
- dividing the supply network into areas having a comparable consumption profile, wherein the entire water consumption is measurable for each area;
determining a regression curve of the inflow for areas that are comparable in each case, based on past values associated with an assumed leak-free supply network, using robust regression methods,determining a region of confidence around the regression curve, wherein measurement values within the region of confidence indicate zero leakage;
measuring a respective minimal inflow for each area within a defined measurement period;
generating time series of measurement values of the minimal inflow for selected areas over a number of measurement periods; and
comparing the time series of the measurement values of the minimal inflow with the regression curve, wherein measurement values lying outside the region of confidence indicate the presence of a leakage in the supply network.
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Abstract
A method and device are provided for leakage detection and leakage location in an area of a supply network (e.g. water supply, gas supply or district heating network), wherein measurement values of sensors of the supply network are statistically analyzed for the presence of leakages using robust regression methods. The false alarm rate (type 2 error) may be reduced or minimized.
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Citations
17 Claims
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1. A method for leakage detection and leakage location in an area of a supply network, comprising:
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dividing the supply network into areas having a comparable consumption profile, wherein the entire water consumption is measurable for each area; determining a regression curve of the inflow for areas that are comparable in each case, based on past values associated with an assumed leak-free supply network, using robust regression methods, determining a region of confidence around the regression curve, wherein measurement values within the region of confidence indicate zero leakage; measuring a respective minimal inflow for each area within a defined measurement period; generating time series of measurement values of the minimal inflow for selected areas over a number of measurement periods; and comparing the time series of the measurement values of the minimal inflow with the regression curve, wherein measurement values lying outside the region of confidence indicate the presence of a leakage in the supply network. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A device for leakage detection and leakage location in an area of a supply network, in which the supply network is divided into areas having a comparable consumption profile, wherein the entire water consumption is measurable for each area, said device comprising:
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instructions stored in non-transitory computer-readable media and executable to; determine a regression curve of the inflow for areas that are comparable in each case, based on past values associated with an assumed leak-free supply network, using robust regression methods; and determine a region of confidence around the regression curve, wherein measurement values within the region of confidence indicate zero leakage; sensors configured to measure a respective minimal inflow for each area within a defined measurement period; and instructions stored in non-transitory computer-readable media and executable to; generate time series of measurement values of the minimal inflow for selected areas over a number of measurement periods; compare the time series of the measurement values of the minimal inflow with a reference regression curve; and determine the presence of a leakage in the supply network in response to identifying measurement values lying outside the region of confidence. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A method for leakage detection and leakage location in an area of a supply network, comprising:
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dividing the supply network into areas having a comparable consumption profile, wherein the entire water consumption is measurable for each area; determining a regression curve of the inflow for areas that are comparable in each case, based on past values associated with an assumed leak-free supply network, using robust regression methods, determining a region of confidence around the regression curve, wherein measurement values within the region of confidence indicate zero leakage; determining sliding mean values or an integrated flow for each area within a defined measurement period; generating time series of measurement values of the sliding mean values or integrated flow for selected areas over a number of measurement periods; and comparing the time series of the measurement values of the sliding mean values or integrated flow with the regression curve, wherein measurement values lying outside the region of confidence indicate the presence of a leakage in the supply network.
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Specification