Advance deployment in multiple locations to tap into potential and reasonable scheduling - ensuring electricity supply during peak summer in Hangzhou
With the overall improvement of the economic situation and the rise of summer temperatures, the demand for electricity has further increased. Relevant departments and power companies in various regions deploy power supply guarantee work, do a good job in supply and demand forecasting, cross provincial power support, unit maintenance, etc., to ensure that electricity demand is guaranteed.
Accelerate the commissioning of major projects
In recent times, many regions have strengthened energy consumption planning, accelerated the construction of power generation projects, and made every effort to ensure the electricity demand for production and daily life during the peak summer season.
As a major electricity consuming province, Guangdong's electricity load is greatly affected by temperature. To avoid power shortages in the summer, multiple power construction projects invested in earlier stages in Guangdong were put into use before the peak electricity demand. On May 31st, the transmission project of the 500 kV Guohua Qingyuan Power Plant was fully completed, which is a key backbone power supply construction project in Guangdong Province for the year. At the same time, five key projects, including the 500 kV Chenghai Power Transmission and Transformation Project and the 500 kV Shanwei Switching Station, were successfully put into operation in May to meet peak summer demand.
Guizhou requires all regions to scientifically carry out water conservation, drought resistance, energy storage and power generation work while ensuring flood control safety. In early May, the Guizhou Provincial Energy Bureau put forward requirements for energy enterprises in their jurisdiction to welcome peak summer weather. On the one hand, they will focus on the normal production and construction of coal mines and fully release coal production capacity; On the other hand, we should focus on fulfilling medium - and long-term contracts for electric coal, fully guarantee the supply of electric coal, complete the tasks of medium - and long-term contracts with high quality and quantity, enhance the calorific value of long-term cooperative electric coal, and strictly supervise the performance of electric coal.
To ensure stable power supply during the peak summer season, the power department of Hubei Province has advanced the deployment of 28 key projects for peak summer, constructing 431.72 kilometers of transmission lines and adding a new substation capacity of 3.16 million kilovolt amperes. At present, 11 projects including the 500 kV transmission line project of Suizhou Power Plant have been successfully put into operation; The first unit of the Nianpanshan Water Conservancy and Hydropower Hub Project, the largest water conservancy and hydropower hub project under construction in Hubei, has been put into operation for power generation. The person in charge of State Grid Hubei Electric Power stated that after all key projects are put into operation, the structure of the Hubei power grid will be strengthened.
On June 30th, the world's highest voltage level and largest transmission capacity flexible low-frequency transmission project was put into operation in Hangzhou. The rated transmission capacity of the project is 300000 kilowatts, achieving the engineering application of 220 kV low-frequency equipment for the first time. Xu Ting from the Operation and Inspection Department of State Grid Hangzhou Power Supply Company told reporters that during the Hangzhou Asian Games, the project can effectively alleviate the peak electricity demand pressure on the power grid, enhance the flexibility and mutual aid ability of electricity, and enhance the guarantee of electricity supply for peak summer and the core area of the Hangzhou Asian Games.
Strengthen energy utilization scheduling management
Focusing on tapping potential, specialized teams have been established in multiple regions to comprehensively strengthen the command, scheduling, and coordination of power supply guarantee, and to tighten responsibilities.
To ensure the peak summer electricity demand in Guangdong, Southern Power Grid has increased its inter provincial assistance efforts and organized western provinces to support the eastern power supply through direct increase in power transmission and other means, ensuring the safe and reliable supply of electricity in Guangdong. Currently, the Fujian Guangdong Interconnection Project is transmitting electricity from Fujian to Guangdong according to the maximum capacity of the current channel. As of June 27th, the Fujian Guangdong Interconnection Project has delivered over 2 billion kilowatt hours of electricity to Guangdong, providing strong support for the stabilization and recovery of Guangdong's economy. According to calculations, during the 14th Five Year Plan period, through the Fujian Guangdong network, the seasonal power transmission between the two regions can reach 500000 to 1.6 million kilowatts.
Guizhou Power Grid Company strengthens overall scheduling and steadily promotes the transmission of electricity from Guizhou to Guangdong while ensuring the electricity demand within the province. "We make full use of the relatively abundant supply capacity during low periods, accurately increase the power supply to Guangdong, and maximize the complementary advantages of coal-fired power generation units and clean energy in Guizhou," Xu Wenqiang, General Manager of the Marketing Department of Guizhou Power Grid Company, told reporters.
State Grid Hubei Electric Power strengthens dispatch to ensure summer electricity consumption for enterprises and residents. Recently, at the Power Dispatch Control Center of State Grid Hubei Electric Power Co., Ltd., dispatcher Tong Shiqi issued a dispatch command to the 500kV Anfu Substation of State Grid Hubei Ultra High Voltage Company. Subsequently, State Grid Hubei Electric Power successfully achieved the closed-loop operation of the 500kV Anfu Station. It is reported that after the 500 kV Anfu Station is put into operation, its power supply capacity will be increased by 600000 to 1.1 million kilowatts under different operating conditions, providing guarantees for serving the economic and social development of Hubei and meeting electricity demand.
In recent years, facing the challenges of the increasing number of electric vehicles and the rapid growth of charging demand, Hangzhou has taken the lead in conducting research on key technologies for orderly charging of residential areas through coordinated interaction between the power grid and electric vehicles, and piloting the implementation of orderly and intelligent charging of electric vehicles in residential areas. Nowadays, residents of Dayou Science and Technology Park located on Houmiaowang Road in Binjiang District, Hangzhou can set the evening charging time and amount for electric new energy vehicles in just 3 seconds by opening the State Grid APP and finding the orderly charging function module. Xu Chuanzi, Executive Deputy Director of the Integration Innovation Center of Hangzhou Power Supply Company, said that orderly charging technology can guide users to actively avoid peak electricity consumption, not only bringing electricity tariff discounts to users, but also improving the efficiency of electricity resource utilization.
Ensure safe transmission and transportation capacity
Ensuring the stable and safe operation of power line equipment is also a recent focus of work for relevant departments in various regions under continuous high temperature weather. "We intelligently manage the electricity load to ensure stable power supply in Guangdong," said Bao Bo, Manager of the Operations and Strategy Department of the Guangdong Power Grid Control Center of Southern Power Grid.
As a power generation enterprise, State Power Investment Group Guizhou Jinyuan Qianbei Power Plant has recently improved the reliability of unit equipment, coordinated the promotion of A-level maintenance work for generator units, strictly controlled various links, improved safety management level and maintenance quality, deeply tapped the potential of units, and fully prepared for the "peak summer".
In order to meet the production needs of electric coal enterprises, Chengdu Railway Group Guiyang South Station has strengthened the organization of coal transportation, carefully formulated transportation plans, dynamically adjusted transportation capacity, and improved the efficiency of unloading operations. Wang Haiping, the head of the Freight Loading and Unloading Department at Guiyang South Station, told reporters that the station operates 24 hours a day to ensure that the transportation of electric coal should be fully loaded.
Ren Shaohua, Deputy General Manager of the Substation Operation and Inspection Branch of State Grid Shiyan Power Supply Company, said that during the peak summer season, we must make every effort to ensure the reliable power supply of 83 substation equipment in the city, ensure the power supply needs of enterprises, and let citizens enjoy a cool summer.
Southern Power Grid Guangdong Power Grid Company revealed that as of now, Guangdong Power Grid has dispatched a total of 112000 people to carry out temperature measurement inspections and low-voltage switch rectification special actions, while increasing power generation efforts. Since May, 31 pumped storage units in the Guangdong Hong Kong Macao Greater Bay Area have generated 1.4 billion kilowatt hours of electricity, setting a new historical high.
