China Safety Science Journal ›› 2023, Vol. 33 ›› Issue (S2): 238-244.doi: 10.16265/j.cnki.issn1003-3033.2023.S2.0041

• Technology and engineering of disaster prevention and mitigation • Previous Articles    

Characteristics of hill fire hazards in transmission lines based on relay-patrol cooperative operation of UAVs

LI Cong1(), XU Wenbo1, JIN Yanke1, WANG Chenhui1, CHENG Haitao2   

  1. 1 School of Emergency Management and Safety Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China
    2 State Grid Electric Power Space Technology Co., Ltd., Beijing 102219, China
  • Received:2023-08-12 Revised:2023-11-07 Online:2023-12-30 Published:2024-06-30

Abstract:

In order to reveal the characteristics of hill fire hazards in transmission lines in China's real environments, a technical scheme of UAV patrol based on relay-patrol cooperative operation was proposed. The transmission line patrol based on the relay-patrol operation of UAVs was carried out in many provinces and cities in China, and then the characteristics of hill fire hazards in transmission lines were analyzed. The results show that the hazards in transmission lines mainly include hill fire hazards, on-site construction hazards, and line hazards. The proportion of hill fire hazards is 77.2%, which is the most important factor affecting the safety of transmission lines. The causes of hill fire hazards can be divided into weed burning, straw burning, forest land/shelter forest burning, and paper burning for worshiping. Hill fire hazards have obvious spatial and temporal distribution characteristics. Hill fire hazards in April are mainly caused by paper burning for worshiping on the Qingming Festival, and 78.7% of the hill fire hazards occur in areas 50 m away from the transmission line. There are 122 hill fire hazards caused by a single fire source and 61 hill fire hazards induced by multiple fire sources. Among the hazards induced by multiple fire sources, those caused by double fire sources account for 45.9%, and 78.6% of the multiple fire source points are located in the spacing of 0-30 m. The fire source area of hill fire hazards is widely distributed. The maximum fire source area is 26.4 m2, and the minimum fire source area is only 0.12 m2. Overall, 84.4% of the fire source area is less than 4 m2.

Key words: unmanned aerial vehicle (UAV) patrol, hill fire hazards, multiple fire sources, fire source spacing, fire source area

CLC Number: