How to prevent wildfires and emergency response on transmission lines

The prevention and emergency response measures for wildfires in transmission lines are as follows:

(1) The key periods for wildfire prevention are divided according to local customs and climate characteristics. High-incidence periods for wildfires mainly include the Spring Festival and spring plowing. , visiting graves to worship ancestors (Qingming Festival, Zhongyuan Festival, Winter Solstice, etc.), straw burning (summer harvest, autumn harvest), and other special periods (festivals prone to mountain fires, continuous sunny, hot, and dry weather, etc.). For key sections, channel inspections will be conducted at least once a day during key periods, and line protectors will conduct uninterrupted inspections every day. For important transmission channels, dedicated personnel will be stationed 24 hours a day.

(2) Combined with line inspections, investigate and count various fire hazards that may cause transmission line failures in and around the protected area, sign safety agreements and establish files with relevant management departments, units and individuals.

(3) Issue a "Safety Hazard Notification" to relevant management departments, units and individuals regarding forest farms, buildings, structures and illegal stacking of flammable and explosive materials that have fire hazards in and around the protected area. "Book", clarifying the rectification requirements and eliminating safety hazards within a time limit.

(4) Strengthen inspections of hidden dangers that have been issued rectification notices, and urge relevant units and individuals to make rectifications within a time limit until the hidden dangers are eliminated; for units and individuals that have major fire hazards but refuse to rectify, the joint government power The facility management department will stop power supply and impose penalties in accordance with the law.

(5) In special seasons and periods such as spring strong winds, summer high temperatures, and "Qingming" sacrifices, target key locations such as forest farms, garbage dumps, scrap collection stations, lumber mills, and villages around the lines. Carry out special fire prevention patrols to check the implementation of wind and fire prevention measures.

(6) Strengthen the operation, maintenance and management of transmission line channels. Trees and weeds around towers and line corridors must be cleared, and trees that do not meet regulatory requirements in line corridors must be cut down resolutely.

(7) Comprehensively clean up the flammable and explosive items piled up in the line protection area, and publicize the harm and serious consequences of fire to the line to residents who often pile up haystacks, grains, sugar cane leaves, etc. under the line. consequences and require relocation.

(8) The occurrence of wildfires is greatly affected by the customs of fire use in wild industry and agriculture. Transmission lines cross mountainous woodlands, shrubs, thorns, farmland, etc., posing serious wildfire risks. The prevention of wildfires focuses on six technical measures: "avoidance, resistance, modification, planting, cleaning and renewal".

? 1) "Avoid": Transportation inspection departments and line transportation inspection units at all levels participate in the feasibility study review and route selection of new lines, and urge the lines to avoid forest areas, bamboo forests, and graves as much as possible Implement measures to avoid wildfire hazards in areas prone to wildfires, such as areas, densely populated areas and areas with habitual agricultural burning.

? 2) "Resistance": Transportation inspection departments and line transportation inspection units at all levels participate in the initial design review and project acceptance of new lines, supervise the implementation of high-span design to prevent mountain fires, and improve the safety of important transmission channels. Cleanup standards to enhance line resistance to wildfires.

? 3) "Reform": The line operation and inspection unit shall carry out line hidden danger inspection based on operating experience. For line sections such as conductor near-ground hidden danger points that cannot meet the requirements for wildfire prevention, hardening, Technological transformation will be carried out by measures such as lowering the base, raising the tower and changing the route.

? 4) "Planting": For line sections that pass through fast-growing forest areas, the line transportation inspection unit consults with the local forestry department or household owners to take measures such as forest land subletting and vegetation replacement to plant outside the line channels. Use fire-resistant tree species to form a biological fire-proof isolation zone. If necessary, build an isolation wall or synchronize with the forestry department to cut down the mountain fire-prevention isolation zone. Replace flammable, fast-growing plants with low-growing, non-flammable cash crops in line protection areas.

? 5) "Cleaning": The transportation inspection department shall formulate differentiated channel cleaning standards based on the line topography, vegetation types and related technical requirements and the importance of the line, and implement financial investment. Carry out investigation of hidden dangers in passages according to passage cleaning standards, and establish files on key sections and prevention and control measures for preventing wildfires.

? a. Capital investment: Transportation inspection departments at all levels and line transportation inspection units must ensure that channel cleaning funds are invested, and priority should be given to including channel cleaning in overhaul and technical renovation projects. When there is a gap in channel cleaning costs, they must raise funds independently. Funds ensure the implementation of channel cleaning, see Figure 5-26.

? b. Personnel investment: Use various methods such as line operation and inspection units to clean up on their own and local power supply companies, outsourced enterprises, line protectors and information personnel to clean up on entrustment, etc. to ensure full investment in personnel. .

? c. Tree and bamboo felling: The line transportation inspection unit establishes tree and bamboo cutting standards, and promptly carries out felling of trees and bamboos and transports them away from the channel site to ensure the efficiency of cutting.

? d. Clearing of shrubs and thatch: The line transportation inspection unit strictly implements the channel cleaning standards and promptly cleans up the shrubs and thatch in the channel, as shown in the figure below. During special sunny and hot periods, it is appropriate to increase the clearance of mountain fire prevention obstacles frequency.

e. Set up a separation wall: The line transportation inspection unit cleans the moso bamboo area under the transmission line and builds a separation wall. New bamboo shoots in the separation wall are promptly cleaned every spring to prevent the continuous growth of moso bamboo. .

? f. Set up wildfire prevention isolation belts: Cut down wildfire prevention isolation belts when necessary, actively seek government support when cutting down isolation belts, and cut down forest fire prevention isolation belts simultaneously.

6) "New": Transportation inspection departments and line transportation inspection units at all levels explore and promote the application of new technologies such as wildfire monitoring and new fire-fighting equipment.

? a. Video surveillance: Install mountain fire video monitoring devices in areas prone to mountain fires. Computer terminals can be used to observe monitoring images in real time. When a suspected mountain fire occurs, the system will automatically alarm and remind line maintenance personnel to pay attention. Be on guard.

? b. Artificial rainfall: During periods and areas with high incidence of mountain fires, artificial rainfall intervention is used to increase the humidity of vegetation to prevent the occurrence of mountain fires; or after mountain fires occur, artificial rainfall intervention is used to extinguish mountain fires. .

? c. Fire prevention lookout posts: Establish wildfire prevention lookout posts in areas with high incidence of mountain fires, and use manual monitoring to monitor mountain fires. If a mountain fire is discovered, line maintenance personnel will be notified as soon as possible to take action. relevant emergency measures.

? d. Extinguishment of initial mountain fires: During high-incidence periods and in high-incidence areas, the work of extinguishing initial mountain fires should be carried out while ensuring safety, and the allocation of anti-mountain fire equipment should be reasonably arranged and deployed uniformly. In provinces prone to wildfires, important power transmission channels should be equipped with no less than 1 set of large wildfire prevention equipment every 100 kilometers, and the operation and maintenance teams responsible for high and medium wildfire risk sections should be equipped with no less than 3 sets of small wildfire prevention equipment. equipment. Inter-regional lines are configured as needed based on the historical fire density of the line corridor, line importance and historical wildfire tripping conditions.

(9) Establish and improve emergency plans to ensure that personnel, vehicles, and equipment are in place. Strengthen contact with the fire protection, public security, and forestry departments. When a mountain fire occurs, immediately take the initiative to contact the local government, police, and fire brigade, and organize and put out the fire in a timely manner. ?

(10) Systematic prediction, monitoring and early warning to prevent wildfires.

1) Wildfire prediction work means that the monitoring and early warning center carries out medium and short-term wildfire predictions and issues reports during periods of high wildfire incidence. The mid-term wildfire forecast refers to the prediction of the possibility (probability) of wildfires near the line in the next 7 days; the short-term wildfire forecast refers to the prediction of the possibility (probability) of wildfires near the line in the next 3 days.

2) Wildfire monitoring work refers to the monitoring and early warning center’s work on wildfire satellite monitoring duty, satellite data reception, hot spot data analysis and identification, etc. The monitoring and early warning center conducts satellite monitoring of wildfires every day, and is on duty 24 hours a day during peak wildfire periods. The duty officer conducts real-time monitoring of wildfires on the State Grid's transmission lines in provinces with high mountainfire incidence through the transmission line wildfire satellite monitoring system; the provincial equipment status evaluation center carries out corresponding duty work through the client access terminal or the provincial wildfire monitoring substation system; monitoring and early warning The center performs alarm calculations on fire points monitored in real time by the satellite monitoring system, and issues alarm information about the fire points to the line to the provincial equipment status evaluation center or line operation and maintenance personnel via phone calls or text messages.

?a. Level 1 alarm: The distance between the wildfire hotspot and the line is less than or equal to 500 meters.

?b. Level 2 alarm: The distance between the wildfire hotspot and the line is greater than 500 meters and less than or equal to 1,000 meters.

c. Level 3 alarm: The distance between the wildfire hotspot and the line is greater than 1,000 meters and less than or equal to 3,000 meters.

d. No alarm: The distance between the wildfire hotspot and the line is greater than 3,000 meters.

? 3) Wildfire early warning work includes mountain fire early warning level determination, medium and short-term wildfire forecasts, wildfire early warning recommendations and power grid early warning issuance. The Monitoring and Early Warning Center regularly carries out medium and short-term wildfire forecasts during periods of high wildfire incidence, compiles medium- and short-term wildfire forecast conclusions and wildfire early warning recommendations for State Grid's cross-regional power grids and provincial lines, and reports them to the State Grid Operations and Inspection Department and the provincial company operations and maintenance The Maintenance Department and the Provincial Company issue power grid wildfire warnings based on wildfire monitoring and early warning recommendations and comprehensive on-site wildfire feedback. The transportation and inspection unit takes corresponding disposal measures in a timely manner based on the wildfire early warning and the actual situation of on-site wildfires.

a. Early warning level: The early warning level from high to low is: red, orange, yellow, blue.

b. Red warning: The number of mountain fire hot spots monitored in a certain province on that day is greater than or equal to 300.

?c. Orange warning: The number of mountain fire hot spots monitored in a certain province on that day is greater than or equal to 200 and less than 300.

?d. Yellow warning: The number of mountain fire hot spots monitored in a certain province on that day is greater than or equal to 100 and less than 200.

?e. Blue warning: The number of mountain fire hot spots monitored in a certain province on that day is greater than or equal to 50 and less than 100.

?f. No early warning: The number of mountain fire hot spots monitored in a certain province on that day is less than 50.

Hope the above can meet your requirements.