Panoramic view of the Three Gorges Project Tang Wei Photo
A set of intelligent dispatching systems equipped with "Classic Eyes" and "The Strongest Brain"
"stabilizer"
From the prediction and forecasting accuracy and dispatching and control accuracy
Ensure the
, headed by the Three Gorges Power Station
The dispatch of the world's largest clean energy corridor reservoir group
to help Yangtze River flood control and disaster reduction
contribute to the ecological benefits of water resource utilization and other ecological benefits
This is
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intelligent central system
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Yangtze River Power Three Gorges Dispatch Hall Zhou Baohong Photography
can collect and analyze real-time water rain sites
1500 water rain sites
20000 more regional automatic meteorological sites
All kinds of meteorological and hydrological information
can monitor and forecast range covering
Nearly 80% of the basin area of the upper reaches of the Yangtze River
can complete the main control station
and control reservoir information collection
work together to safely overcome the flood season Cheng Gong Photo by
However, the construction of "Classic Eye"
was not achieved overnight
In 2012, the Three Gorges Water Conservancy Hub Cascade Dispatch Communication Center (hereinafter referred to as Three Gorges Ladder Dispatch) built the largest water situation telemetry system in the country at that time, which can collect information from more than 400 telemetry sites from Pingshan, Sichuan to Yichang, Hubei in 5 minutes, and forecast the water and rain situation in the upper reaches of the Yangtze River within 48 hours.
In 2016, the water rain telemetry station increased to more than 600. In June of that year, the Three Gorges Ladder Adjustment predicted a week in advance that 35,000 cubic meters of floods per second passed through the Three Gorges Project on the 27th. On the 26th, the inlet flow of Three Gorges Reservoir reached this peak, and the forecast was basically accurate.
In August 2020, with the help of Sanxia water situation telemetry system and other hydrological meteorological forecast system, the No. 5 flood peak was accurately predicted two days in advance to 75,000 cubic meters per second.
According to Bao Zhengfeng, deputy director of the Three Gorges Ladder Mechanism, the current system can view the trend within 10 days, the magnitude within 5 days, and the process within 2 days.
"The strongest brain"
Make the cascade reservoir group "live"
Three Gorges ladder scheduling jointly conducted consultation Mo Zufeng Photo by
Jointly carried out flood control dispatching is a complex system problem. It is necessary to solve the problems of when to block the cascade reservoir, which reservoir first, and how many blocks each reservoir, but also consider the safety of hub dams, shipping, power generation and other factors. Therefore, behind each scheduling is not only the time-based assessment and precise calculation, but also the balance and coordination of considerations by multiple parties.
"The strongest brain" includes a cascade reservoir joint optimization scheduling model, a scheduling plan intelligent evaluation system, and a cascade reservoir joint optimization scheduling intelligent decision-making support platform. By using "actuarial algorithms" such as intelligent algorithms and big data technology, the Three Gorges Ladder Scheduling has achieved rapid solution to comprehensive elements such as flood control, power generation, shipping, and ecology of cascade reservoirs, thereby maximizing the comprehensive benefits.
In 2020, the largest flood peak of the Three Gorges Reservoir was 75,000 cubic meters per second, which is the largest flood peak since the construction of the Three Gorges Reservoir, far exceeding the 63,300 cubic meters per second in 1998.
According to the analysis of the Yangtze River Water Conservancy Committee, if there is no joint dispatch of the reservoir group with the Three Gorges Reservoir as the core, in the case of floods of the same magnitude, the water level of the flood peak in Shashi District, Jingzhou City will exceed the guaranteed water level by 1.3 meters, and the water level of the flood peak in Lianhuatang will exceed the guaranteed water level by 0.8 meters, which means that Jingjiang Flood Diversion Zone must be enabled. More than 600,000 people in of the flood division area of will be transferred, and 493,000 mu of arable land and more than 100,000 mu of aquaculture area will be flooded.
Thanks to the precise dispatch of the "strongest brain", cities and people in the middle and lower reaches of the Yangtze River are safe and sound.
"stabler"
Water resource optimization configuration
In addition to flood control, the smart scheduling system has also played a role in water resource utilization, ecological scheduling, etc., and can be called a "stabilizer" for regulating water volume.
The middle and lower reaches of the Yangtze River are dry seasons from December to March of the following year, with an average annual flow of 3,500 cubic meters per second.
2022 Summer Three Gorges Project Replenishment
In 2022, the Yangtze River Basin continued to drought. From August 1 to 15, the Yangtze River Commission coordinated the demand for drought-resistant water and high-temperature power supply, and dispatched the basin controlled reservoir group to orderly replenish about 5.3 billion cubic meters of water to the middle and lower reaches of the river, of which 1.09 billion cubic meters of water were added to the Three Gorges Reservoir, which to a certain extent alleviated the low water level of the middle and lower reaches of the Yangtze River.
Since the Three Gorges Project began to store water in 2003, it has timely supplied and replenished water to the middle and lower reaches of the Yangtze River during the dry season every year. As of June 2022, it has adjusted and replenished water to the middle and lower reaches of the Yangtze River, and the total amount of water replenishment in the past 10 years has accounted for the majority. In the past four years, the Three Gorges Reservoir has replenished water for nearly 700 days in the downstream, with a total water replenishment of about 90 billion cubic meters, increasing the average downstream flow during the dry period by about 1,700 cubic meters per second, effectively improving the navigation conditions in the middle and lower reaches and effectively ensuring the production, living and ecological water needs along the river.
At the same time, the cascade reservoir will also conduct ecological scheduling experiments. Ecological scheduling refers to the process of continuous increase in water release during the four big fish spawning period, causing the river water to continue to rise, creating suitable hydrological and hydraulic conditions, promoting the spawning and reproduction of drifted egg-producing fish such as the "four big fish" and other drifting egg-producing fish, and maximizing the ecological function of the Yangtze River reservoir group.
Three Gorges Reservoir with clear water and green shores Tang Wei Photo
For thoroughly implementing the spirit of the 20th National Congress of the Communist Party of China
For striving to write
comprehensively build a modern socialist country new chapter
contribute water conservancy power
We must vigorously improve the water control pipe water
Digitalization, networking, and intelligence
3 Three Gorges Group cascade power station joint dispatching platform
empowering rivers with technology
creates a smart scheduling benchmark in the big data era
provides samples for the next development direction of smart water conservancy
Source 丨Three Gorges Xiaowei, articles include deletion and modification
review 丨Chen Rui
Supervised 丨Fan Yizi
Editor, copywriting 丨Wang Yu Luo Jingyue
Typeline 丨Luo Jingyue
Proofreading 丨Chen Shuai
