Sichuan Fuyu Hydropower urgently needs to find a proper way

After the amount of hydropower generation in 2011 and the total installed capacity in 2012 exceeded Hubei's capacity as the country's largest hydropower base, Sichuan Hydropower again welcomed the bumper harvest season: this year Xiluodu, Jinping and other large-scale hydropower plants have been put into operation, with 14 million kilowatts of new hydropower installed capacity. Equivalent to more than half of the Three Gorges.

In 2011, natural gas production in Sichuan exceeded Xinjiang first, second only to Shaanxi, and became the second largest natural gas production in the country. Major power generation groups have also entered Ganzi, Aba and Liangshan to develop new energy...

"This indicates that the construction of the nation's largest clean energy base in Sichuan Province has begun to take shape," said the person in charge of the Provincial Energy Resources Bureau.

What will this bring to Sichuan?

What benefits does Sichuan get?

The "abundant surplus" conflict is expected to ease

The large-scale hydropower plants that will be successively put into production this year are located at the backbone power point of the West-East Power Transmission on the Jinsha River and the Yalong River. Power from Sichuan will support the economic and social development of the East China and Central China.

For Sichuan, the commissioning of hydropower plants can bring tax revenues. On the other hand, the rapid completion of the power supply will also greatly ease the contradiction between the "abundant surplus" that has been plaguing Sichuan's power grid. Sichuan hydropower is mainly concentrated from May to October each year. During the dry season in winter, the water flow from the river is drastically reduced, and the hydropower generation capacity is only about 40% of the wet period. Even worse, nearly two-thirds of the hydropower in Sichuan is runoff. The power station has poor regulation capabilities and can not store surplus water during the wet season to generate electricity during the winter. “Due to the lack of power generation capacity during the dry season in winter, there is a shortage of power supply in Sichuan. According to calculations, by the time of the dry season in 2015, Sichuan’s terror will face a huge power gap of 10 million kilowatts,” said Wang Yuxiang, general manager of the provincial power company.

According to the relevant person in charge of the Provincial Energy Administration, the National Energy Administration recently approved that the local electricity of Xiangjiaba and Xiluodu Hydropower Station in Sichuan and Yunnan will increase from 5% to 15%. “We are still applying for the Jinping and Crown Land in winter. The retention of electricity has increased from 22.5% to 30%."

According to industry sources, because of the slow flow of the Yalong River, the reservoir formed by the hydropower station is adjusted annually or even adjusted for many years. If the program is approved, it means that the Sichuan power grid will make up for a deficit of more than 5 million kilowatts in winter, and the remaining gaps It can be transferred from other provinces by UHV.

The relevant person in charge of the Provincial Energy Administration stated that by increasing the proportion of hydropower, Sichuan's relatively poor coal resources can be compensated and the Sichuan environment can be protected.

Can surplus water be sent out?

The power grid is elbow or abandon electricity 11.5 billion kwh

Power building is fast, but it is constrained by power grid construction.

On the right and left banks of Xiluodu, two units are currently put into operation, but the right bank power station constructed by China Southern Power Grid transmits power to the Guangdong ±500 kv DC transmission project in October of this year. The left bank built by the State Grid—Zhejiang Jinhua ±800 kV UHV The DC transmission project will not be put into use until early next year.

It is estimated that Sichuan Province will need to send 30.10 billion kwh of surplus hydropower during the flood season, plus the electricity capacity of large hydropower base units such as Jinping, Guandi, Xiangjiaba, and Xiluodu left bank. Sichuan needs to send 52.5 billion kwh of surplus hydropower. While the State Grid has arranged for 41 billion kilowatt-hours of deliveries, there is still about 11.5 billion kilowatt-hours of surplus hydropower to face the risk of abandoning water.

The State Grid has strengthened the reconstruction of the UHV Fufeng and Jinsu DC related auxiliary projects, and issued a notice requesting the relevant power purchasing provinces of East China, Central China, North China and Northwest China to fully absorb Sichuan hydropower.

According to statistics from the Sichuan Power Trade Center, in the first half of this year, the maximum transmission load of Sichuan Power Grid reached 14.4 million kilowatts, an increase of 30% from the same period of last year; the amount of electricity delivered was 5.941 billion kwh, which was a year-on-year increase of 53.51%, creating a history of Chuandian’s delivery. The highest record.

According to the relevant person in charge of the Provincial Power Company, with the construction of many hydroelectric power sources with annual adjustments or multi-year adjustment capabilities, Sichuan's external power transmission has considerable advantages in the market, and there will be stable and increasing trends. It is expected that by 2020, the total installed capacity of Sichuan Power Grid will reach 90.3 million kilowatts, of which hydropower is 74.26 million kilowatts, accounting for 82.2%, and it will require about 33.30 million kilowatts of electricity to be consumed outside the province. "Recommendations of the relevant national authorities to approve Yaan-Wuhan UHV AC and other power transmission projects as soon as possible, in the future construction also fully consider the synchronization of power and power grid construction." Relevant person in charge of the provincial power company said.