Fight the cold tide to fight ice and snow power supply to go all out to meet the demand for electricity
Recently, under the influence of a large-scale cold wave, the heating power load has been released at an accelerated rate; superimposed on the factors of the continuous improvement of the national economy and the rapid rise of power demand, many power grids ushered in the test of peak power consumption.
The data shows that the year-on-year growth rate of electricity consumption in the whole society in the operation area of State Grid has returned to a high level in the same period in history. The electricity consumption in the whole society in November was 505 billion kwh, an increase of 9.1% year-on-year, and the growth rate hit a 27-month high , It is expected that the electricity consumption of the whole society will continue to maintain rapid growth from December to early next year.
The cold winter is here, and the warmth is not ending.
State Grid Co., Ltd. earnestly implemented the decisions and deployments of the Party Central Committee and the State Council, and planned various tasks for the peak winter period. Since the beginning of winter, the power supply in the operating area has been stable and orderly, and will be released on December 18 to ensure safe and reliable power supply. Eight initiatives.
Faced with the rapid growth in electricity demand, the majority of cadres and employees of all units of the company actively acted and bravely shouldered heavy responsibilities, fighting cold waves, fighting ice and snow, and eliminating hidden dangers, and fully carried forward the spirit of the power grid iron army of "particularly able to endure hardship, particularly capable of fighting, and particularly capable of giving. Practicing the corporate purpose of "People's Electricity for the People" with practical actions, we will do everything possible to ensure the people's electricity needs and serve the overall situation of economic and social development.
Hunan: Fully enter the "wartime state" to ensure smooth operation of the power grid
Since the beginning of winter, due to the superposition of multiple factors such as sudden temperature drop, residential heating, and sharp rise in industrial power consumption, the maximum load of the power grid has reached 31.5 million kilowatts, a record high in winter power consumption.
State Grid Hunan Power actively responded and took various measures to ensure reliable power supply and smooth operation of the grid.
Faced with the severe power supply situation, State Grid Hunan Electric Power has entered into a "wartime state", coordinated with government departments to carry out orderly power utilization, reasonably arranged power grid dispatch, and organized industrial loads and some commercial loads to adopt staggered production and peak avoidance. Electricity and other measures; under the condition of ensuring that the units in the province are fully generated, actively coordinate the superior dispatching and the power of other provinces, and strive for the Qishao DC and Exiang connection lines to be stably sent to Hunan at a rate of 6 million kilowatts; optimize the management of hydropower ecological flow, and arrange for small hydropower troughs Water storage and peak power generation to enhance peak capacity; make every effort to ensure the power demand for people's livelihood in the province.
State Grid Hunan Electric Power comprehensively strengthened equipment operation and maintenance, carried out daily special inspections and temperature measurement of important equipment, and adopted relevant measures of "one equipment, one plan"; promptly carried out line ice melting, and completed 11 lines of ice melting.
At present, the State Grid Hunan Electric Power has more than 800 emergency repair teams with more than 12,000 people on standby 24 hours a day to carry out emergency repairs for the peak winter power grid and ice melting on transmission lines to ensure the safe power supply of the power grid.
In addition, State Grid Hunan Electric Power has also strengthened quality services, actively coordinated with users, and implemented "dual control" measures for electricity and electricity to reduce the impact on customers.
Proposals were issued to all sectors of the society, and guidance and suggestions were issued on electricity saving, scientific electricity usage, and reasonable electricity usage for large industrial enterprises, large commercial complexes, landscape places and residential customers in the province.
Jiangxi: Keep an eye on key lines and actively guide and release adjustable load resources
As of December 18, affected by the continuous low-temperature rain and snow, the power load of Jiangxi Power Grid has increased sharply, and the highest power load for five consecutive days has increased by 34% year-on-year.
State Grid Jiangxi Electric Power spares no effort to ensure the safe, stable and orderly power supply.
In order to meet the demand for electricity for production and living in the province during the winter, the State Grid Jiangxi Electric Power issued the "Work Plan for Peak Winter in 2020" in early November to start various preparatory work, and at the same time organize the power supply companies of cities and counties to carry out a round of power distribution Special line inspection work focused on the protection measures for 26 A++, 10 A+, and 7 A-level ice-coating risk county companies in the province.
Regarding the 500 kV Xianmeng I and II loop lines in Jiuling Mountain, Mufu Mountain, Poyang Lake Plain, and Jinggang Mountain in the northwest of Jiangxi that have been icing and galloping, the State Grid Jiangxi Electric Power requires relevant units to strengthen Patrol and monitor, promptly deal with problems found, and at the same time organize and carry out the monitoring of icing on transmission lines (98 locations) and lines in high altitude areas, focusing on 98 historical icing areas and 8 newly added high altitude areas Monitoring of icing at key points such as sections, electric railway lines, and "three-span" sections, focusing on the three-span sections prone to icing such as the Binjin Line across the Shanghai-Kunming high-speed rail, grasp the ice-covering data of on-site equipment, and release early warning information in time.
In order to fully release the adjustable load resources of various industries, guide residents to cultivate energy-saving and efficient electricity consumption habits.
On December 15, State Grid Jiangxi Electric Power invited 1.122 million residential customers to respond to residents' needs.
From 17:00 to 18:00 that day, 251,000 residential customers reduced the peak load of the grid by 151,500 kilowatts by turning off high-power electrical equipment such as air conditioners and electric water heaters for a short time.
Chongqing: Strengthen equipment operation and maintenance inspections and actively respond to icing on lines
On December 18, under the 674 tower of the ±800 kV Fufeng line in Chepanshan, Chongqing, several power supply employees braved the severe cold to conduct line icing observation and inspections to ensure the safe operation of power transmission arteries.
On that day, the maximum load of the Chongqing Power Grid was adjusted to 17.28 million kilowatts, an increase of 12.86% from the maximum load in the winter of 2019, a record high in winter load.
From the perspective of the overall balance between the current installed capacity in the network and the existing channel capacity, during the peak winter period, the overall power of the Chongqing power grid can be basically guaranteed. However, if the power channel fails due to extreme weather or the units on the network are shut down due to lack of coal, etc. , There may also be a gap in power supply.
In order to fully guarantee the normal supply of electricity, State Grid Chongqing Electric took the initiative to report electricity supply and coal storage in power plants to the Chongqing Municipal Commission of Economy and Information Technology to prepare for orderly use of electricity. At the same time, it carefully prepared a peak winter work plan to further optimize the power generation plan. arrangement.
The company also strengthened line ice observation and inspection inspections in high-altitude areas. All of the existing 5 ice observation stations have been reinstated, and they have been on duty for 24 hours. They have increased their inspection and observation efforts, reasonably arranged emergency repair forces, and prepared enough emergency repair spare parts. Repair various sudden power failures in time.
State Grid Chongqing Electric Power will closely follow the weather conditions, roll out power and electricity balance analysis, strengthen the operation and maintenance of grid equipment and daily inspections, urge power plants to strengthen unit operation and maintenance, pay close attention to changes in coal-fired power plants' electric coal inventory, optimize power generation plans and balance power plants Store coal, make preparations for abnormal weather and emergencies, and make every effort to ensure an orderly supply of electricity during the winter.
Zhejiang: scientifically arrange grid operation to ensure reliable power supply
On December 18, the highest power load in Zhejiang Province reached 79.71 million kilowatts, a new high since the beginning of winter.
From the 1st to the 17th, the electricity consumption of the whole society in Zhejiang increased by 12.01% year-on-year.
Currently, Zhejiang Power Grid is stable on the whole and power supply is normal and orderly.
State Grid Zhejiang Electric Power prepared and responded actively in advance, taking multiple measures, tapping the potential, and purchasing external power in the fourth quarter ahead of schedule. The largest external power in December exceeded 30 million kilowatts, a year-on-year increase of 16.3%. Together with the output of units in the province, Guarantee the current electricity demand of the province.
In view of the possible impact of low temperature, rain and snow on the operation of the power grid, State Grid Zhejiang Electric has strengthened power load forecasting and rationally arranged the operation of the power grid to fully meet the power needs of production and residents.
In Quzhou, power repair personnel Liao Changqing and Qiu Liping organized emergency repairs for line tripping faults caused by icing in Xikou Town, Longyou County, carried out grounding wire and pole-mounting operations in the snow, and restored power to the people as soon as possible.
At the Wudanggang Ice Coating Experimental Base in Shengzhou, Shaoxing, at an altitude of 900 meters, the power supply company employee Xu Gaofeng and his colleagues are on duty 24 hours a day. Special inspections are carried out on the ice-coating area every hour, paying close attention to and reporting the ice coating situation of the equipment. Grasp the operating status of the line.
In addition, State Grid Zhejiang Electric Power has also strengthened the implementation of actual combat drills in response to peak winter demand.
At 15:00 on December 10, State Grid Zhejiang Electric Power Co., Ltd.'s response to the peak demand during the winter peak cut demand response exercise ended successfully.
The exercise covered all cities and counties in the province, with a total of 7,129 participating users, with a maximum peak load of 1.31 million kilowatts, and a response power of more than 1.6 million kilowatt-hours, successfully achieving the goal of the exercise.
Beijing: Improve emergency power supply capability to serve the people of the capital to warm the winter
During the winter of this year, in accordance with the requirements of Beijing Municipality and State Grid Corporation of China, State Grid Beijing Electric Power will for the first time convert municipal heating stations, user heating stations, wall-hung boiler users, “coal-to-electricity” users, “coal-to-gas” users, and hospitals, Schools, nursing homes and other six categories of users are fully included in the scope of winter power supply guarantee, and the number of customers for heating and power supply exceeds 20 million.
In order to ensure the warmth of the residents through the winter, State Grid Beijing Electric Power has established a "5+1+N" (5 special work plans + 1 set of emergency early warning response mechanisms + risk control measures for various typical scenarios) winter heating guarantee system, and vigorously promotes no one The application of new technologies and new equipment such as autonomous inspections and mobile on-board DC ice melting trucks will strengthen the protection of heating customers such as "coal-to-electricity", continue to improve emergency power supply guarantee capabilities, and make every effort to ensure the smooth operation of the capital power grid and the reliability of the majority of residents powered by.
State Grid Beijing Electric Power carried out investigation, rectification and evaluation of hidden dangers on 407 key substations, 1,691 "coal-to-electricity" customer heating power lines, and 2,737 municipal and household heating power lines, implemented differentiated measures to ensure safe operation of stations and lines .
For the lines with heating users, the fault handling "one line, one case" is compiled one by one, the "one village, one case" for the "coal to electricity" users, and the "one household, one case" for other heating users, so as to realize the failure Fast processing.
In order to meet the needs of emergency power supply, 258 emergency repair teams, more than 2500 emergency repair personnel, more than 650 emergency repair vehicles, and 125 power generation vehicles have been deployed in various regions of the city to ensure timely and effective handling of various emergencies.
Jilin: Load growth hits a new high and fights for low temperature to protect people's livelihood
Affected by the cold air, the temperature in Jilin Province has dropped sharply again recently, with the minimum temperature being 10°C lower than the same period last year.
Driven by heating demand and the recovery of economic activities, the electricity load continued to grow.
On December 18, Jilin Power Grid’s dispatching power generation and receiving power reached a record high since the 16th, reaching 273.442 million kilowatt-hours, a year-on-year increase of 10.72%.
It is currently in the middle of the heating period in the northeast high-cold region. Jilin Power Grid has just recovered from the huge damage caused by the rain, snow and freezing disasters, to meet the social power and central heating stability, clean energy consumption, and complete grid peaking and other pressures. Superimposition, ensuring the stable operation of the power grid and reliable power supply task is arduous.
State Grid Jilin Electric Power follows the principle of “safety first, prediction first, people's livelihood first, prevention first”, strengthens grid risk analysis, makes every effort to balance power and electricity, guarantees the heat supply of thermal power units, and prepares for emergency response to risks, while making detailed control Operational risk analysis, real-time monitoring of abnormal grid data using big data, strengthening of load and new energy forecasts, tracking of power plant coal supply and unit operating conditions, and making full use of market economic means such as auxiliary service markets, spot trading platforms, and medium- and long-term transactions to ensure power supply Reliability and new energy consumption capacity.
The company also pays close attention to changes in the weather. The production, operation and maintenance personnel braved the low temperature and severe cold to increase inspection and maintenance of the restoration of line equipment and temporary power supply measures damaged in the early freezing rain and snow disaster in the forested areas of Changbai Mountain in the east and the windy areas of the central and western plains. Focus on strengthening the monitoring of heavy-duty equipment lines in central cities, and the emergency repair teams of local power supply companies and the 95598 customer service hotline are on standby for 24 hours.
Source of information: State Grid Publicity Department, relevant company units, State Grid News