Method and system for monitoring cable tunnel environment based on cable temperature measurement
A technology of cable tunnel and temperature measurement, applied in the parts of thermometers, thermometers, measuring heat and other directions, can solve the problems of labor-intensive, unable to effectively guarantee the inquiry of cable tunnels, etc., and achieve the effect of avoiding deterioration.
Active Publication Date: 2012-09-19
CHONGQING UNIV
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Problems solved by technology
At present, most of the environmental monitoring in the cable tunnel in China still adopts the method of manual inspection, that is, the inspection workers detect point by point along the cable tunnel. The problem with this method is that it requires a lot of manpower, and it cannot effectively guarantee that each inspection Linemen scrupulously surveyed all cable tunnels
At present, there is no report on the research on the environmental monitoring system of cable tunnels in China. Many studies are carried out around the fault detection of cables and the monitoring of operating temperature of cables.
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[0049] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings:
[0050] The principle of the cable tunnel environment monitoring method based on cable temperature measurement is: the number and location of measurement points are determined according to the length of the cable tunnel to be monitored, and the number of each measurement point is determined according to the number of the power cable. Take a cable tunnel with a length of 1800 meters as an example. Assuming the line number is 110kV Zhuyu East-West Line I loop, then the location and number of temperature measurement points in the cable tunnel should be determined according to the following rules: First, in the cable tunnel A measuring point is arranged at the midpoint of the cable. The number of the measuring point is ZYDX_I_M, and the numbering rule is the pinyin initials of the line name + circuit number + position number. Here M represents the mid...
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Abstract
The invention relates to a method for monitoring cable tunnel environment based on cable temperature measurement, comprising the following steps: 1) determining the cable temperature measurement points; 2) measuring the surface temperature in operation of the cable; 3) calculating the temperature of conductors in the power cables; and 4) judging the cable tunnel environment; and arranging personnel to check if the environment in the cable channel corresponding to the temperature measuring point is changed after comparing the theory temperature T1 with the measured temperature T0. The invention further relates to a system for monitoring cable tunnel environment based on cable temperature measurement, and the system comprises a temperature measurement terminal and a data processing center.
Description
Technical field [0001] The present invention relates to the technical field of high-voltage power transmission and distribution, especially the technical field of urban power transmission and distribution. Background technique [0002] In recent years, with the rapid growth of urban electricity capacity in my country, 110kV transmission lines and 220kV transmission lines have become the main power transmission lines in domestic large cities. In order to improve the city's appearance and reduce the footprint of transmission lines, more and more underground power cables are being laid and operated in major domestic cities. [0003] At present, the main laying method used for some 10kV, 110kV and 220kV cables is cable tunnels. Because the construction and operation and management of domestic cable tunnels are not standardized enough, the environment in the cable tunnels is often damaged, such as silt, water and accumulation in the cable tunnel Sundries and so on. When silt, stagnant...
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IPC IPC(8): G01K11/32G01K1/02G01K1/024G01K11/3206
Inventor 杨帆程鹏高兵
Owner CHONGQING UNIV