Yunnan Power Grid Kunming Bureau eliminated the major defect of optical cable disconnection

It is reported that the transmission management office of the Kunming Power Supply Bureau of Yunnan Power Grid issued a #147-#148OPGW
on the 500 kV Long Plant Line A on January 14.
This defect treatment is repaired
in accordance with the goal of "ensuring that the cable is not connected, the core is not cored".

As an overhead ground line of the transmission line, the major defects of the broken stock must be eliminated in time, and at the same time OPGW optical cable as a communication line, because the optical cable carries a large number of South Network general adjustment and provincial dispatch scheduling service channels, as well as part of the ground adjustment service channel, if the optical cable is interrupted, it will affect the South Network Optical Road 2, 10 service channels, 5 provincial network optical channels, 54 service channels, regional network optical road 1, 3 service channels interrupted, according to the requirements of the General Adjustment Communications Office, shall not interrupt the normal operation
of the optical cable.

Before the implementation of the operation project, the transmission management institute organized personnel to conduct on-site investigation, carried out operation risk assessment, formulated a reliable defect handling plan, and carried out scheme deduction for many times to ensure the reliable implementation of the plan, ensure the safety of operators and the smooth
operation of optical cable business 。 Because the OPGW optical cable cannot be confirmed whether the stainless steel casing of the optical core layer is damaged after being struck by lightning, the operator sits on the soft ladder frame along the OPGW optical cable outlet to the broken strand position during the operation, and uses the full-tension pre-stranded wire repair strip for repair, and the outlet and repair process directly contact the damaged OPGW optical cable body, which may cause the OPGW optical core layer to be damaged by accidents and cause the interruption of the optical cable communication service
。 The transmission management station and the communication management institute jointly formulated an emergency plan for accidents, and if the optical cable is interrupted in extreme circumstances, it can ensure timely elimination of defects in the #142 and #1481 of the 500 kV Long plant and #142-#148ADSS in the 500 kV Long plant, ensuring that the communication service is not affected
.

It is reported that during the OPGW optical cable repair process of the transmission management station, the emergency repair personnel of the communication management station also made emergency repair preparations at the scene, and due to the full preparation work before the operation, the transmission management station successfully completed the 500 kV Long plant line #147-#148OPGW
.

In the past, OPGW optical cable broken stock defects were involved and replaced after interruption of optical cable business, and this operation created the first time that Yunnan Power Grid carried out OPGW optical cable broken stock defect treatment without interrupting the optical cable communication business, which not only ensured the stable operation of transmission equipment, but also ensured that the communication business was not affected
.