No matter in any equipment of the system, live operation can not only realize the maintenance of equipment, eliminate the shortage, but also keep the equipment to continue running state, ensure the stable operation of the power system, users get uninterrupted electric energy, with great social and economic benefits. Therefore, live operation has the following advantages:
Can ensure reliable, continuous power supply to the user. Power outage maintenance will reduce the reliability of power supply lines, resulting in insufficient power supply, disconnect the contact lines between systems, and affect the stability of the system. The maintenance without power outage ensures the best working condition of the system and the generator operating under economic conditions (power outage of 50OkV line in many cases to reduce the power generation of the generator, which will increase the coal consumption index of power generation).
It can eliminate line defects in time and improve the reliability of overhead line operation. Power supply maintenance line is limited in many cases, which will make the small defects of the line due to not timely processing and development, causing line failure and power failure, in this case, the loss of the national economy is very great.
Can reduce power loss. In the distribution network, because disconnecting the line will change the optimal distribution form, such as long-distance transmission through the ring network, which will increase the line loss, live operation can reduce the power loss of the grid.
Due to the flexibility of live work implementation, personnel and machinery can better undertake the tasks and work of line maintenance as planned and balanced, reduce unnecessary overtime, and also reduce the workload of rush repair in holidays.

Disadvantages of live work
Live maintenance is much more difficult than power outage maintenance. Special shielding suits, insulation suits, instruments and insulation tools must be used for live operation. Compared with power outage operation, there are fewer live operation items, and the conditions for live operation limit the scope of live operation to some extent. It is the reason that live line workers at home and abroad are actively carrying out experiments and researches in this field.

IS420ESWBH2A

IS420ESWBH2A

IS420ESWBH2A

Characteristics of live operation
Live operation is a kind of maintenance operation without power failure, is a special operation mode, is carried out in high altitude and strong electric field conditions. Therefore, it is necessary to restrict the external conditions, such as meteorological conditions, operation mode and so on. Special insulation tools should be used according to the device characteristics and voltage level to prevent high voltage, strong electric field, and current from harming human body. Participants must go through professional training, assessment, and follow strict rules and regulations and operating methods to ensure the safety of the operation. Its characteristics are:
Live work is scientific and safe. Although the operation is carried out at high altitude and under strong electric field conditions, the operation is safe and reliable because of the use of special insulated tools, strict regulations, strict division of labor, reliable experimental data.
Live working efficiency is high. It reduces the power outage time, and because of its use of special materials made of tools, light and flexible, safe and reliable, easy to use, operators and less, maintenance efficiency is also higher.
Live working environment is special. Live operation and power failure operation have a great difference, is in the high altitude, and in the strong electric field operation, so this requires live operation personnel must go through professional training, in the work to be bold and careful, always ensure the necessary safety distance.
Live work is a team job. It requires all personnel to cooperate closely and complete the work together. At the same time, the operation requires a special person to monitor, and the guardian shall not concurrently work other jobs.
Live work is not subject to blackout time restrictions. It can be carried out when it is convenient to ensure the maintenance of planning, but also to ensure the quality of maintenance.
Live work is limited to a certain extent by the environment and climate. Live operation shall not be carried out under bad weather conditions such as thunder, rain, snow and fog; When the wind is greater than grade 5 or the humidity is greater than 80%RH, it is not suitable to carry out live operation. When the equipment is poorly insulated and the safety distance is not enough, live work cannot be performed, so it has certain limitations compared to power outage work. Carrying out live work has great economic benefits. Live operation can eliminate the defects of power transmission and transformation equipment in time and play a positive role in ensuring the safe operation of power grid. Extensive live operation can reduce power outage to users and improve the reliability of power supply, which is a positive factor for completing more electricity sales. It can make the system dispatch convenient and flexible, reduce spare equipment and capacity, reduce the operation and system connection of power outage, which is a favorable factor to reduce the occurrence of accidents.以上翻译结果来自有道神经网络翻译（YNMT）· 通用场景