The State Grid should take multiple measures to cope with the continuous high temperature and fully guarantee the power consumption
2022-08-26
Since the beginning of summer, the continuous high temperature and drought have brought a great test to the power supply in Sichuan and Chongqing. The State Grid has taken multiple measures to fully guarantee the people's livelihood in Sichuan and Chongqing.
Since the first ten days of August, the maximum power load in Sichuan Province is expected to increase by 25% over the same period last year. Since August 7, Sichuan has ushered in severe high-temperature and drought disaster weather, which is expected to last for about a week, facing the situation of the highest extreme high temperature, the lowest precipitation and the highest power load in the same period in history. This round of high temperature and drought extreme disaster weather has caused serious disasters in 15 cities (prefectures) of the province.
Zhou Jian, deputy chief engineer of State Grid Sichuan electric power control center, said: "80% of Sichuan's power supply comes from hydropower. This year, Sichuan has experienced a high temperature and drought disaster rarely seen in 60 years, with a wide range of impacts and a long duration, resulting in a serious shortage of water from major river basins. Some major hydropower plants have reached the bottom, and the hydropower generation capacity of the province has dropped by more than 50%
At present, Sichuan has initiated three-level power supply regulation measures to ensure the people's livelihood. The first step is to initiate the active peak avoiding measures. For the power users who actively participate in and effectively implement the active peak avoiding load response, the response fees will be refunded when settling the electricity charges. Second, from August 14 to 20, according to the current situation, some high load energy enterprises will be subject to emergency regulation and control to stop production and give power to the people, and the power load will be about 7 million kilowatts, so as to fully relieve the power supply pressure. The third step is to require all localities to immediately notify enterprises to make production adjustments to ensure people's livelihood.
The health level of key transmission channel equipment is directly related to the safety of power consumption. In the traditional furnace city of Chongqing, two workers from the local power supply company are inspecting the underground ring cable tunnel of Jiefangbei. Although the high temperature above 60 ℃ on the ground is not directly felt, the humid tunnel is more like a large steamer.
Wei Hongyu, an employee of the transmission operation inspection center of the State Grid Chongqing urban power supply company, said: "Jiefangbei ring tunnel is the main core power supply to guarantee the Jiefangbei business circle and Hongyadong district. The whole Chongqing has been sunny for more than 10 days. We have shortened the inspection from once every 5 days to once every day."
The average distance between this underground cable tunnel and the ground is more than 30 meters, and the deepest is 47 meters. During the high temperature period, the temperature in the tunnel exceeds 40 ° C, and the humidity is more than 90%. There are more than 300 cable tunnels like this in Chongqing. Every day, more than 150 electric power employees stay in such tunnels to inspect the cable lines for more than 10 hours.
In order to relieve the pressure of electricity consumption, Chongqing has also conducted appropriate regulation and control on commercial electricity consumption. In Tongnan District, the local government closed the urban nightscape lighting project, replaced the high-pressure sodium lamps with high power consumption, and popularized energy-saving lighting sources such as LEDs.
Since the beginning of summer, the loads of 5 regional power grids and 19 provincial power grids of the State Grid have repeatedly reached new highs. Recently, the high temperature is still continuing. In order to protect the coolness of thousands of homes, power workers in many places braved the high temperature and heat to fight on the front line.
In Jiangsu, the high temperature above 40 ℃ has lasted for more than ten days. Under the condition of continuous high power load operation, many power supply facilities have been overloaded and fully loaded. In Huayuan street, Wujin District, Changzhou, the local power supply company is replacing a transformer that supplies power to two residential buildings and villages in the city.
In the scorching sun, the clothes of the staff were pressed tightly to their bodies in a short time. In this way, they persisted for more than 4 hours and successfully replaced the transformer. The power supply capacity increased from 200 KVA to 400 KVA, which doubled.
Yang Ningchun, a resident of Dongfang new village in Changzhou, Jiangsu Province, said: "it's too hot this day. It's really challenging to see them work under the sun for three or four hours. It's not easy. Today I opened three air conditioners. In fact, I really appreciate them from the bottom of my heart."
In Weifang, Shandong Province, local power workers are repairing the defects of a key transmission line through live line work to ensure the smoothness of the "artery" of the transmission channel. At this time, the outdoor ambient temperature exceeds 40 ° C, and the temperature of the power conductor reaches 70 ° C.
Zhao Rongsheng, deputy leader of the third class of live line operation of Weifang Power Supply Company of State Grid, said: "the moment I grasped the wire, even though I was wearing gloves, it was still very hot. I was just hanging from a height of 15 meters. I held a tool in my hand and held it over my head. My arm was numb in a short time. It was a great test of my physical strength."
After 40 minutes of intensive operation, the operators landed on the ground smoothly. Take off your equipment and shielding clothing, and your clothes have been soaked with sweat. Since August, such live work has been carried out more than 5200 times in Shandong, eliminating more than 1000 hidden dangers.
Since the first ten days of August, the maximum power load in Sichuan Province is expected to increase by 25% over the same period last year. Since August 7, Sichuan has ushered in severe high-temperature and drought disaster weather, which is expected to last for about a week, facing the situation of the highest extreme high temperature, the lowest precipitation and the highest power load in the same period in history. This round of high temperature and drought extreme disaster weather has caused serious disasters in 15 cities (prefectures) of the province.
Zhou Jian, deputy chief engineer of State Grid Sichuan electric power control center, said: "80% of Sichuan's power supply comes from hydropower. This year, Sichuan has experienced a high temperature and drought disaster rarely seen in 60 years, with a wide range of impacts and a long duration, resulting in a serious shortage of water from major river basins. Some major hydropower plants have reached the bottom, and the hydropower generation capacity of the province has dropped by more than 50%
At present, Sichuan has initiated three-level power supply regulation measures to ensure the people's livelihood. The first step is to initiate the active peak avoiding measures. For the power users who actively participate in and effectively implement the active peak avoiding load response, the response fees will be refunded when settling the electricity charges. Second, from August 14 to 20, according to the current situation, some high load energy enterprises will be subject to emergency regulation and control to stop production and give power to the people, and the power load will be about 7 million kilowatts, so as to fully relieve the power supply pressure. The third step is to require all localities to immediately notify enterprises to make production adjustments to ensure people's livelihood.
The health level of key transmission channel equipment is directly related to the safety of power consumption. In the traditional furnace city of Chongqing, two workers from the local power supply company are inspecting the underground ring cable tunnel of Jiefangbei. Although the high temperature above 60 ℃ on the ground is not directly felt, the humid tunnel is more like a large steamer.
Wei Hongyu, an employee of the transmission operation inspection center of the State Grid Chongqing urban power supply company, said: "Jiefangbei ring tunnel is the main core power supply to guarantee the Jiefangbei business circle and Hongyadong district. The whole Chongqing has been sunny for more than 10 days. We have shortened the inspection from once every 5 days to once every day."
The average distance between this underground cable tunnel and the ground is more than 30 meters, and the deepest is 47 meters. During the high temperature period, the temperature in the tunnel exceeds 40 ° C, and the humidity is more than 90%. There are more than 300 cable tunnels like this in Chongqing. Every day, more than 150 electric power employees stay in such tunnels to inspect the cable lines for more than 10 hours.
In order to relieve the pressure of electricity consumption, Chongqing has also conducted appropriate regulation and control on commercial electricity consumption. In Tongnan District, the local government closed the urban nightscape lighting project, replaced the high-pressure sodium lamps with high power consumption, and popularized energy-saving lighting sources such as LEDs.
Since the beginning of summer, the loads of 5 regional power grids and 19 provincial power grids of the State Grid have repeatedly reached new highs. Recently, the high temperature is still continuing. In order to protect the coolness of thousands of homes, power workers in many places braved the high temperature and heat to fight on the front line.
In Jiangsu, the high temperature above 40 ℃ has lasted for more than ten days. Under the condition of continuous high power load operation, many power supply facilities have been overloaded and fully loaded. In Huayuan street, Wujin District, Changzhou, the local power supply company is replacing a transformer that supplies power to two residential buildings and villages in the city.
In the scorching sun, the clothes of the staff were pressed tightly to their bodies in a short time. In this way, they persisted for more than 4 hours and successfully replaced the transformer. The power supply capacity increased from 200 KVA to 400 KVA, which doubled.
Yang Ningchun, a resident of Dongfang new village in Changzhou, Jiangsu Province, said: "it's too hot this day. It's really challenging to see them work under the sun for three or four hours. It's not easy. Today I opened three air conditioners. In fact, I really appreciate them from the bottom of my heart."
In Weifang, Shandong Province, local power workers are repairing the defects of a key transmission line through live line work to ensure the smoothness of the "artery" of the transmission channel. At this time, the outdoor ambient temperature exceeds 40 ° C, and the temperature of the power conductor reaches 70 ° C.
Zhao Rongsheng, deputy leader of the third class of live line operation of Weifang Power Supply Company of State Grid, said: "the moment I grasped the wire, even though I was wearing gloves, it was still very hot. I was just hanging from a height of 15 meters. I held a tool in my hand and held it over my head. My arm was numb in a short time. It was a great test of my physical strength."
After 40 minutes of intensive operation, the operators landed on the ground smoothly. Take off your equipment and shielding clothing, and your clothes have been soaked with sweat. Since August, such live work has been carried out more than 5200 times in Shandong, eliminating more than 1000 hidden dangers.