The hottest underground cable in Changsha can be e

2022-09-21
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Changsha: underground cables can be "examined" without excavation, and the overhaul and maintenance are more convenient

Changsha: underground cables can be "examined" without excavation, and the overhaul and maintenance are more convenient

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original title: Changsha: underground cables can be "examined" without excavation, and the overhaul and maintenance are more convenient

staff are testing underground cables

red time, April 13 (lihuifang correspondent quxiaoshan) as we all know, most of our cables are deeply buried underground, and it is easy to have "undetectable, undiagnosed, and untraceable" situations after failures. Today, it is learned from the power distribution room of the overhaul company of state power Changsha power supply company that they can effectively detect and locate the location of Cable Partial Discharge by using OWTS oscillation wave cable partial discharge test, find cable defects in advance, facilitate the overhaul and maintenance of potential cable defects, and change the existing fault repair mode

this technology has been applied to the inspection of the outgoing cable from the 10kV Wuhe embankment I to the #1 switching station in the distribution room of the overhaul company of Changsha power supply company. Taking advantage of the outage maintenance opportunity of Xianing substation, the repairman carried out shock wave partial discharge test on the outgoing cable to find out the hidden dangers of the cable in advance to ensure the safe and reliable operation of the distribution

on the same day, the 10 kV Wuhe embankment I loop cable tested by the repairman was 1720 meters long, and the power supply range included Defeng community, Heye village, Yali foreign language school, etc. after more than an hour of testing, the test results were normal, and the cable was in good operation

in 2019, the power distribution room has formulated the annual Cable Partial Discharge and dielectric loss detection plan for the outgoing cables of relatively old and important lines in combination with the outage maintenance of substations. Carry out the joint diagnosis of oscillatory wave partial discharge and ultra-low frequency dielectric loss on a regular basis. Next, the office will continue to do a good job in cable operation and maintenance management. In 2014, Kunming Science and technology Hengda Technology Co., Ltd. built the first fence type aluminum lead alloy composite anode plate semi-automatic production line at home and abroad in Jinning Industrial Park, Yunnan Province, effectively improving the reliability and safety of cable line operation

Author: lihuifang quxiaoshan

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