Flight-control management system developed by State Grid Xinyi county electric power supply company helps prevent external force risks
Published: Nov 16, 2023 04:04 PM
Amid China’s efforts to boost the economy, the development of municipal infrastructure and factory buildings is on the fast track, leading to an increased usage of large machinery, including cranes and excavators. However, when these machines operate outdoors, issues such as external force damage due to contact or insufficient distance between the boom, the bucket, and transmission lines weigh on the reliable power supply.

Currently, power supply companies primarily focus on preventing and controlling external force damage through on-site inspections of construction sites with personnel left to oversee operations. Alternatively, monitoring devices are employed to assess construction sites, and special personnel are dispatched to ensure proper supervision.

However, on the whole, the first approach is subject to the inspection personnel distribution and frequency, making it challenging to troubleshoot all hidden dangers. The second approach is hindered by factors such as distance, road conditions and weather, which have a great impact on the timely arrival of personnel. There have been times when the construction work has been completed before responsible personnel arrived.

On November 13, a drone equipped with an amplifier issued a warning to the crane drivers at a factory lifting site in Xinyi’s Economic Development Zone, Jiangsu Province. The message conveyed was, “Your vehicle is too close to the live lines, posing a risk of discharge. Please turn the vehicle to the southeast direction as soon as possible, away from the power system protection area…”

Following the drone’s instructions, crane drivers moved away from the spot in an orderly manner, averting the potential damage caused by external force. This effective response was made possible thanks to the “Linghangzhe” flight control and management system developed by the State Grid Xinyi County Electric Power Supply Company.

When the incident occurred, a drone of the State Grid Xinyi County Electric Power Supply Company conducted an independent inspection of the 220 kV Yaoping transmission line. While inspecting the 48th tower, the drone detected potential external hazards due to nearby factory lifting operations. It promptly relayed real-time images back to the background. 

Upon receiving this information, Yin Long, a professional of transmission line inspection on duty, took action. He picked up the corresponding microphone and conveyed a verbal warning and instructions via the on-board loudspeaker to the site. Through remote communication, the external force damage was effectively and precisely prevented and controlled.
It's acknowledged that the drone is equipped with a communication module and an on-board loudspeaker, enabling a two-way transmission of image and sound between the background system and the site. This ensures that even when the drone is flying at an altitude of 90 meters, ground personnel can hear it clearly. To optimize power consumption and performance, the Company has increased the drone's battery capacity by 30%, extending its endurance time to 45 minutes.

Since the pilot application in July, an average of four drones has been deployed on a daily basis, assisting in addressing over 30 incidents caused by external forces. Going forward, the Company plans to expand the application of drones, aiming to achieve a response time of within 15 minutes for external force damage in the region.