A UHV streaming station is built in Daliang Mountain

In the Daliangshan section of the Jinsha River, the river from the Qinghai -Tibet Plateau rolled from a high place and rolled eastward. Overlooking the earth, the lines in the Jinsha River outlined the outline of the mountain. Over the winding rivers, a silver line connects the two provinces of Sichuan and the Soviet Union. In the future, the green power of the Jinsha River Basin, Sichuan will be delivered to East China. At the end of this year, the electricity was passed.

The starting point of the silver line is the world's largest stream of stations located in Budao County, Liangshan Prefecture. The station is a delivery station for the Baihetan Hydropower Project, and it is also the largest super engineering in the world. The station is constructed by the "three stations" method, which is sent by the Baihetan -Jiangsu DC project ± 800 kV cloth dragging stream station, Baihetan -Zhejiang DC project delivery station ± 800 KV Baihetan Phase II replacement Streaming stations and 500 kV substation. The entire project covers an area of ​​about 930 acres, with a replacement capacity of 16 million pilots.

At present, the second phase of the Baihetan stream is stepping up the construction. The National Power Grid Co., Ltd.'s UHV Construction Branch organizes participants to fight at the scene to strive for the project to realize the bipolar low -end electricity investment at the end of the year.

Select the optimal top -up solution for design lean to design excellence

In early September, Daliang Mountain, the rain was moist, and it was green everywhere. In the Phase Second Phase changes in Bai Tao, Baihetan, a stream -changing transformer square, the firewood wall of straight and tens of meters is noticeable. Before the construction of the construction, the owner project department of the State Grid Special High -voltage Company and the construction project department repeatedly discussed with the designer for the lack of thickness of the steel protective layer of the firewall construction, determined the combined steel model technical solution with an additional layer, and in the combination of the combination The steel molding system is designed to achieve the effect of seamless connection between the authentic wall of the firewall structure, which fills the technical gap of the thin wall structure of a large area of ​​water and concrete in China.

Compared with previous projects, the second phase of the Baihetan and Baihetan has the characteristics of poor construction environment, equipment technical performance upgrades, and high construction technology requirements. If you follow the past management experience, it will affect the progress of the project. "We continuously optimize the design of the project, take the key to improve quality from the source, take the initiative to innovate work ideas, and select the optimal top -level plan." The manager of the project department of the two stations introduced.

Optimized design is reflected in all aspects of the project. Here, three stations share public facilities such as main control buildings, comprehensive buildings, comprehensive water pump rooms, power supply and water sources. The project department rationally optimizes the layout of the station area, and the vertical size of the AC filter venue is shortened by 20 meters compared with similar projects; the high -end valve halls of the two streams are all steel structures. , To reduce the impact of earthquake on electrical equipment.

After the project was started, the owner project department and design team of the State Grid Special High -pressure Company met several times. In response to the situation of the soil quality of the soil at the scene of more than 55%, the innovation adopted the high -water clay strong ramming and the filling of the foundation foundation construction design solution to successfully solve the solution This world -class problem with ultra -high water content clay capsules reduces the soil of 2.5 million cubic meters.

"We strictly design the design of the closing drawings and improve the quality of the engineering process from the source." Zhang Zhi, the quality specialty of the project department of the owner of the Budai stream station, said. During the construction of the bug exchange station, the station optimized 43 design schemes, making the design more in line with the requirements of on -site construction.

All -chain construction management improvement project construction management "gold content"

"There are thousands of on -site construction processes, and each item is related to whether the entire construction assembly line can be completed efficiently. We emphasize that the construction management personnel use the full -chain management thinking to prevent construction lag because of the" short -sightedness "." Baihetan Phase II changing flow changes Li Yong, deputy manager of the owner project department, said.

The situation of the epidemic situation is complicated and changing. In order to ensure that the project is promoted according to nodes, the owner project department of the State Grid Specialty Company organizes the construction project scientifically, and the procedures are reasonably arranged to create good conditions for the cross -building and electrical crossing operations.

There are many large equipment at the second phase of the Baihe Beach, and there are many large -scale equipment. From Xichang Railway Station to the construction site of Buhuai more than 200 kilometers, the roads are rugged and high in the mountains, and there are many rain and snow in winter. The equipment safety arrives at the scene is a major problem in front of the project department. From the reinforcement of highway bridges along the way, to the guarantee of streaming transformers and other large transportation roads, the owner project department of the State Grid Special High -voltage Company and the local power supply enterprise, the local transportation department and the large logistics transportation unit have established a regular coordination working mechanism to open up the big big logistics and transportation units to open up the large For all aspects of the transportation, avoid the lag of equipment to enter the field.

Gas insulation fully closed combined combination electrical appliance resistance test is passed at one time. The local discharge test of the flow transformer resistance of the flow transformer is passed all at one time. Essence

In order to improve the "gold content" of engineering construction management and implement the "six fine four" requirements, State Grid Special High -pressure Company adheres to the technical management project, changes the previous single conventional management to technical help management, and promptly carry out technological quality improvement technical services, and constantly continuously carry out technical services. Improve the operation capacity of construction units.

The summary form of the construction plan of the two streaming stations supervision projects can be found that since the construction of the project, some projects, technical requirements, and craftsmanship in the construction plan of the second phase of the Baihetan Phase II streaming station strictly reviewed the project. Quality, etc. In addition, the owner's project department also uses information technology to implement three -dimensional design bases for the construction of the underground pipeline network, the cable tunnel of the flow area, and the steel structure hanging of the valve hall to ensure the precise understanding and mastering the technical points of the front -line construction team. Integrated scientific and technological innovation resources to strive for boutique demonstration project

On the road to the second phase of the Bai Tao and Baihetan, a row of red characters is particularly noticeable -high reliability, high standardization, and high utilization rate. In the early days of the project construction, the owner project department of the State Grid Special High -voltage Company established the "Double 800" boutique demonstration project goal of the "Double 800" boutique demonstration project in the new era, that is, the project conveying scale reached 8 million kilowatts, and the operating voltage level reached 8 million. This puts forward higher requirements for engineering quality technology and construction standards, and builders must be more advanced in management.

The owners of the State Grid Special High -pressure Company dynamically integrate the scientific and technological innovation resources of various participating units, and set up an engineering field scientific and technological innovation system with the owner project department as the leading responsible unit, construction unit and manufacturer as the main body. The owner's project department leads the new technology application planning of Buhuai and Baihetan Phase II Streaming Station, rolling the work plan of the innovation technology project of the Baihetan Phase II Streaming Station, and organizes the inner wall anti -corruption sprayer of the pipeline. Dozens of innovative achievements such as template construction technology and field level control based on drones -based aviation testing technology to improve the quality of engineering construction.

The installation of DC through wallaris is the "big difficulty" of on -site equipment installation. The pipe hanging and the pore pitch should be as accurate as possible. The technicians of the construction project department have developed a special tool for hanging through the hanging slot pipes after many experiments, solving the problem of easy collision between the suspender and the exterior wall of the valve hall. "We extend the suspension point to the outdoor by 45 cm through the research and development auxiliary tools, which not only avoids the suspender being stuck, but also reduces the construction safety risk, improves the hanging efficiency, and the installation time of the single sleeve is shortened by 3 hours." Zhang Mingzhang, manager of the construction project department of Sichuan Power Transfer Company, Electric A Power of Sichuan Sichuan, introduced.

A series of scientific and technological innovation measures allowed project construction to promote smoothly, and the construction technology and construction quality have also been improved.

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