Submarine cable operation and monitoring integration

The reporter arrived at Zhoushan Power Supply Company's production base on July 15 to monitor the footage through submarine cable and watch the seagoing vessels after the typhoon. At about 8 o'clock, at the cable monitoring center, two staff members were staring at the wall-sized display screen. Following their eyes, the reporter saw a lot of real or imaginary lines on the screen, as well as some moving points.

"What does the line represent? How is the situation now?" The reporter could not help but ask. Upon hearing the question, the staff member Wu Yibo turned his head to the screen and introduced it. Originally, the solid line indicates the laying position of the submarine cable, while the dashed line indicates that the range from this point to the real line is the submarine cable protection zone, which does not allow the ship to drop anchor; the moving point is the position of the vessel, as long as the mouse is clicked on it. Detailed records can be seen, including ship number, territory, speed, etc. The system will automatically issue an alarm when the vessel is down below normal speed.

"What happened during the typhoon? Has there been a failure?" The reporter also thrown several questions. Zheng Hao, another staff member, said that although there were many ships sheltering in Hong Kong, they were not parked in the banned anchorage area. Moreover, they were closely monitored at the submarine cable monitoring center, and they also increased the on-duty force at the observation deck. In place, there was no external force to destroy the accident.

"We have managed to defuse hundreds of times of the anchorage crisis. Even during the typhoon, the submarine cable runs safely and smoothly." Cheng Zheng said proudly.

Zheng Yu’s pride comes from the R&D “submarine cable operation and monitoring integration” platform. The platform realizes three-dimensional monitoring of multi-azimuth and multi-technical means for transmission of submarine cables in the Zhoushan Power Grid, and satisfies the monitoring requirements for the prevention of external damage to the submarine cable operating area. At the same time, the platform can shield false alarms caused by various factors, effectively increase the true rate of alarms, and also create conditions for the submarine cable observation platform to realize unattended operation.

Zheng Hao said: "Do not underestimate the 'integration of submarine operation and monitoring' platform, which is the crystallization of high technology." Platform installed on the high-definition fog through the day and night submarine cable video surveillance equipment, can penetrate the night or thick clouds Detect targets, accurately locate high-speed moving objects, and detect distances up to 5 km. After installing the monitoring system, the monitoring range is 3 to 4 times that of the previous one, and the distance of about 4 kilometers in the darkness not only can clearly find the ship, but even the details of the crew using the lighter to light cigarettes are clear.

In addition, the platform also combines the functions and technologies of the most advanced electronic charts, photoelectric sensors, thermal imaging and video monitoring, radar monitoring, warning sign telemetry, image intelligence analysis, intelligent voice and other equipment or systems in the field of domestic surveillance and alarm. Functional complementation and system linkage.

Full-time monitoring

While doing a good job of monitoring submarine cables, Zhoushan Power Supply Company also has unique experience in urban cable monitoring.

On July 10, Lushan Shandao City was roasted on hot and hot ground. Fang Qiming, who had to use an external thermometer to walk around the street for manual inspections, was sitting in a cool monitoring room and was seriously staring at them. The "Online Monitoring and Early Warning System of Cable Joint Faults" Screen.

"We must closely monitor the No. 1 monitoring of the administrative line. We have just issued an early warning message. If we raise the temperature again, we must notify the shipping inspectors to the site to check and check." Fang Qiming, staff member of the distribution and transportation inspection center of Zhejiang Dushan County Power Supply Company Yu Guofeng said.

"Ok, the current temperature is still stable. Once the "transaction" occurs, we must immediately go to the scene." Yu Guofeng replied immediately.

“Dripping...” Fang Qiming’s voice did not fall, and he saw the red dialog box on the screen “Administrative Line No. 1 Monitoring Point Detection Value Temperature Alarm”. “Xiao Yu, Administrative Line No. 1 monitoring point temperature abnormality, immediately notified the engineering area, Request for on-site review."

"It has been reported." After Yu Guofeng hangs up, Fang Qiming pays close attention to the alarm point to see if the temperature is still rising.

At the same time, the Qishan County Power Supply Company Distribution Network Inspection Center immediately organized a force to rush to the site to accurately find the No. 1 monitoring point. The infrared imager detected that the joint temperature has reached 97 degrees Celsius. The construction staff immediately transferred the load to the line and arranged for the repair personnel to replace the middle of the cable at the point of failure.

Here, after Fang Qiming of the monitoring center used the administrative line normally, the value obtained by the system was compared with the value of the on-site temperature measurement. After getting the normal value, Yu Guofeng smiled and showed a satisfied smile.

"Using intelligent means is not the same, that area only appears less than ten minutes of power outage time, but also in advance to inform customers to take the initiative to repair, in the past it was unthinkable." After the failure to eliminate Fang Qiming finally relaxed.

"No, passive repair is always better than taking preventive measures." "The two people after the simple conversation once again entered the state and carefully monitored the cable facilities throughout the island."