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State Grid Shanghai Electric Power carried out live helicopter operations to eliminate transmission line defects.

4月1日，國網上海電力公司聯合國網電力空間技術有限公司，採用直升機帶電作業方式開展500千伏輸電線路檢修消缺。這是上海電網首次採用直升機實施的線路檢修作業，在不影響線路持續供電條件下順利消除了本體缺陷，進一步提升了城市電網供電可靠性。

State Grid Shanghai Electric Power carried out live helicopter operations to eliminate transmission line defects.

此次開展檢修消缺的500千伏汾三/汾林線是上海電網重要的外電入滬“主動脈”，承擔著向中心城區輸送電力的重任。近日，線路運維人員在開展老舊設備專項巡視中通過無人機發現，該線路部分架空地線存在斷股的缺陷，威脅輸電線路可靠運行。綜合考慮作業點環境及存在的安全風險，國網上海超高壓公司決定採用直升機吊椅法進行此次帶電作業。

State Grid Shanghai Electric Power carried out helicopter live operation to eliminate the defects of transmission lines, and the picture shows the helicopter carrying the operator taking off.

On the day of operation, ground operators use temperature and humidity meters and wind speed and wind direction meters to accurately measure the on-site meteorological conditions to ensure that they meet the requirements of the operation. After the helicopter arrived at the scene, the flight crew carefully checked the name, number and phase line of the tower in the air, and flew to the lifting point after confirming that it was correct. Subsequently, the helicopter winch steel cable lifted the chair carrying 1 workers in full shielding suits, flew smoothly along the established route, and hovered precisely above the operation point.

State Grid Shanghai Electric Power carried out helicopter live operation to eliminate the defects of transmission lines, and the picture shows the helicopter carrying the operator taking off.

"It's time to start your homework!" With the order of the ground guardians, I saw the operator take the insulated sling chair about 6 meters long carried by the helicopter to the operation point where the defect of the overhead ground wire is located, and then began to use the crimping gun to crimp the overhead ground wire of the broken strand. 0 minutes later, the maintenance and elimination work was completed, and the helicopter escorted the operators to the ground safely. On the same day, the helicopter eliminated a total of 0 defects of broken strands on the overhead ground line.

State Grid Shanghai Electric Power carried out live helicopter operation to eliminate transmission line defects, and the picture shows the operators carrying out high-altitude maintenance to eliminate defects.

"The live operation of the helicopter is not limited by the surrounding environment, has high safety and reliability, can quickly and accurately deliver the operator to the operation point, saves the time for personnel to climb the tower and line the line, greatly improves the safety factor and efficiency of the operation, and improves the overall efficiency by about 60% compared with the traditional manual live operation. In the future, we will continue to explore and research new live operation modes such as 'drone + robot' to better cope with the tests of high load and extreme weather, and provide strong power guarantee for economic and social development." He Bing, a professional engineer of power transmission and inspection of State Grid Shanghai UHV Company, introduced. (Source: State Grid Shanghai Electric Power Company)