Transmission equipment plays an increasingly large part in the construction of the world. With the expansion of the power grid, the workload of line selection is also increasing. A 100KM patrolling line needs 20 patrolling personnel to work in a day to complete it. Therefore, the traditional patrolling method has been unable to meet the extensive needs of the modern power system.
For high voltage transmission line operation management mode and conventional practices, indicates that traditional way patrol difficulties are: hard labor intensity and working conditions, and low labor efficiency, power grid emergency fault and abnormal climate condition, the line maintenance personnel do not have good traffic advantages, the use of common instrument or the naked eye to inspect facilities. This way can not fully meet the needs of modern power grid construction and development.
Traditional patrol diagram
UAV patrol is bound to replace the traditional patrol way
| Problems existing in traditional patrol lines | UAVs take over |
First： the patrolling distance is long, the workload is heavy, and the walking patrolling efficiency is very slow, which cannot improve the patrolling efficiency.
Second: in the event of snow, snow, floods, earthquakes, landslides and other natural disasters, the patrol work can not be carried out.
Third: mountainous patrol line has high risk, always threatening the life safety of patrol personnel. In mountain forests, venomous creatures are becoming more common, and if bitten, the most dangerous are invisible traps and traps. |
UAVs own advantages: easy to carry, simple operation, rapid response, rich load, a wide range of mission uses, low requirements on the environment for takeoff and landing, autonomous flight.
Industry advantages of UAV:
First: UAV patrolling improves the speed and efficiency of power maintenance and overhaul, so that many work can be completed quickly in a fully charged environment, to ensure the safety of electricity use. According to relevant information: UAV patrolling is 40 times more efficient than manual patrolling. Second: the use of unmanned aerial vehicles (UAVs) for conventional transmission line inspection can reduce labor intensity. Compared with manned helicopter inspection, it can improve the safety of line operators and reduce costs. Third: UAVs have the characteristics of fast line patrol and quick emergency response, timely detection of defects and timely provision of information, so as to avoid the power failure of line accidents and save the high power failure cost.
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UAVs applied to the specific solution of power line patrol
1. Fixed-wing UAVs for emergency, routine flights
First of all, UAVs can make quick emergency response with fixed wings, which are suitable for natural disaster early warning patrol flight and accident emergency flight. Secondly, through a large range of rapid flight inspection, the first time to grasp the accident hidden dangers. Finally, the ground disaster degree was mastered through aerial surveying and mapping, and the ground workstation immediately informed the power transmission management office and the emergency repair team to carry out emergency repair and maintenance according to the real-time aerial monitoring data.
Advantages of emergency repair: it improves the efficiency of the emergency repair team in dealing with emergency incidents, conducts damage assessment for the affected area quickly and accurately, and wins valuable and sufficient time for the emergency repair of electricity towers and wires.
2.Multi-rotor mounted visible light patrol
The inspection contents include: drainage line (whether there is a broken strand), stem tower (whether there is a bird's nest, damage, deformation, loose fastening metal), insulator (whether there is a flash drop sign, damage, pollution, foreign body suspension), shock hammer(whether there is deformation, the presence of foreign bodies), wire clip (whether loose), wire (whether there are broken strands, foreign bodies hanging), ground environment (whether there are buildings in the specified scope and beyond the scope of the growth of plants) and other content.
Secondly, the UAV carries out patrol monitoring and real-time synchronous transmission to the ground staff. Finally, after the completion of the inspection work of the UAV, the ground staff will judge the inspection results according to the inspection content and formulate corresponding solutions according to the specific situation.
Advantages of conventional visible light patrolling: Used for daily patrolling tasks, UAV visible light patrolling has the characteristics of high working efficiency, high accuracy and large working range compared with traditional artificial ground patrolling. Compared with manned aircraft patrol, UAV has obvious advantages such as high safety, low operating cost and strong real-time performance.
3.Multi-rotor mount thermal imaging patrol
Problem solved: Transmission equipment failed at night
Unmanned aerial vehicles (UAVs) carry out inspection on inspection lines by carrying thermal imaging dual-light equipment. Through the ratio of abnormal temperature changes, highly concealed fault points can be found. Combined with traditional visible light inspection lines, thermal imaging inspection lines will greatly improve the accuracy of detection of fault points. The UAVs are equipped with thermal imaging equipment for nighttime inspection of transmission equipment based on the following criteria: wire (whether there is red hot spot), wire clamp (whether there is heat at the contact point), drainage wire (whether there is heat at the contact point), insulator (whether there is heat at the breakdown point), culm tower (whether there is heat at the breakdown point), and tensioning tube (whether there is heat at the tension point).
Advantages of emergency repair: it improves the working efficiency of the night repair team in dealing with emergency incidents. The unmanned aerial vehicle is equipped with thermal imaging dual-light equipment to conduct infrared inspection for the fault points quickly and accurately, so as to win enough precious time for finding the fault points and emergency circuit repair.
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