Cable displacement deformation measurement system
A technology of measurement system and deformation, applied in the direction of electric/magnetic solid deformation measurement, electromagnetic measurement device, etc., can solve problems such as research without thermomechanical effect monitoring
Pending Publication Date: 2018-04-20
YANCHENG POWER SUPPLY CO STATE GRID JIANGSU ELECTRIC POWER CO +2
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Problems solved by technology
[0003] Theoretically, it is impossible to take measures to completely eliminate the thermomechanical effect during construction, and it always exists during operation. At present, there is no research on the monitoring of thermomechanical effect during operation at home and abroad and the corresponding device results
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[0018] The specific implementation of a power cable monitoring and analysis device of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0019] Such as figure 1 As shown, the cable displacement deformation measurement system of the present invention includes a CPU, a display module, a communication module, a button module, an AD conversion module, a filtering module, a sliding rheostat and a 5V high-precision DC power supply, and the CPU is connected to the communication module and the 5V high-precision DC power supply respectively. The AD conversion module is bidirectionally connected, the button module is connected to the CPU, the CPU is connected to the display module, the filter module is connected to the AD conversion module; the positive pole of the filter module is also connected to the The sliding piece C of the sliding rheostat, the sliding piece C is connected to the bending point of the cable through a rigid rod,...
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The invention provides a cable displacement deformation measurement system comprising a CPU, a display module, a communication module, a key module, an AD conversion module, a filter module, a slide rheostat and a 5-V high-precision direct-current power supply. The cable displacement deformation measurement system monitors changes of a load and a temperature; an actual required curvature radius value R0 is obtained based on a relationship between a curvature radius value change, a load, and a temperature; the actual required curvature radius value R0 is compared with a practically measured curvature radius R; if the R is smaller than the R0, the terminal is determined to be in a conduction ejection state. According to the system provided by the invention, the system is used for measuring and analyzing parameters like deformation and displacement of the cable in operation to discover abnormal situations caused by the thermo-mechanical effect timely, so that measures are taken to reducethe probability of cable fault occurrence caused by the thermo-mechanical effect and thus the heavy losses caused by the cable fault are reduced and the reliability of cable operation is improved.
Description
technical field [0001] The invention belongs to the technical field of cable monitoring, in particular to a cable displacement and deformation measuring system. Background technique [0002] The problem of thermomechanical effect is inevitable in the development and application of high voltage cable lines, and the failure induced by thermomechanical effect has become one of the main failure causes of high voltage cables. Under the action of thermomechanical effect, the cable will repeatedly bend and deform, which will cause fatigue strain on the cable metal sheath, cause the loss of the cable body and its accessories, and cause power failure. Especially as the selection of the cable cross-section becomes larger and the voltage level is higher and higher, the thermomechanical effect generated by the cable will also become larger and larger. If no effective countermeasures are taken, it will lead to cable arching and displacement. , excessive bending or even damage the cable....
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IPC IPC(8): G01B7/16
CPCG01B7/18
Inventor 曾海建陈文胡必伟
Owner YANCHENG POWER SUPPLY CO STATE GRID JIANGSU ELECTRIC POWER CO