Title :
Gas leak location method for pressurized cable networks using pattern matching
Author :
Takeda, Kazutoki
Author_Institution :
NTT Access Syst.Labs., Ibaraki, Japan
fDate :
6/1/1995 12:00:00 AM
Abstract :
A new gas leak location method is proposed for telecommunication cable networks which are composed of different cables and/or branch cables. With this method, falling pressure curves are measured at several pressure measuring points, and the pressure curves are calculated using a simulation. The position and/or size of the leak are varied in the simulation and when the measured falling-pressure curves coincide most exactly with the pressure curves obtained by the simulation, the leak position in the simulation model indicates the estimated leak position. This paper describes the simulation method, experimental results and location error characteristics
Keywords :
digital simulation; fault diagnosis; fault location; leak detection; pattern matching; pattern recognition; pressure measurement; telecommunication cables; transients; branch cables; error estimation; estimated leak position; falling pressure curves; falling-pressure curves; gas leak location; leak position; leak size; location error characteristics; pattern matching; pressure curves; pressurized cable networks; simulation; telecommunication cable networks; transient pressure characteristics; Boundary conditions; Communication cables; Differential equations; Pattern matching; Position measurement; Power cables; Pressure measurement; Size measurement; Telecommunications; Telephony;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
