Defect detecting method and system of high voltage buried cables

• Main Authors: WANG WEI, ZHOU ZIGUAN, LI WENJING, LIU ZHU, OU QINGHAI, LIN HONGYU
• Format: Patent
• Language: English
• Published: 10.02.2016
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention discloses a defect detecting method and a system of high voltage buried cables. The defect detecting method comprises following steps: ultra-wideband communication signals are send to a detection zone, and return signals of the ultra-wideband communication signals are received; the return signals are subjected to pretreatment; the return signals obtained via pretreatment are subjected to imaging processing so as to form profile images; and it is determined whether detected high voltage buried cables possess defects based on the difference of return signal intensity of different parts of the profile images. According to the defect detecting method and the system of high voltage buried cables, ultra-wideband communication technology is adopted, non-invasive detection of the high voltage buried cables is carried out, applying of additional electrical signals or light signals on the high voltage buried cables is not needed, normal operation of the high voltage buried cables is not influenced; penetrating of obstacles with a certain thickness, such as the ground, can be realized, cable detection can be carried out in the presence of obstacles, and imaging and defect detecting of a plurality of buried equipment can be realized.