Wind power counter peak shaving, as the name suggests, is to "oppose" the power grid's peak and valley load work. In essence, it is an anomaly in which some local power grids or power plants disregard the interests of the entire network for their own interests and work convenience during peak shaving work. behavior, they do not absorb system power when the power grid is under load and the entire network has excess output. Instead, they output power to compete for power generation; at peak times, the unit voltage is low and the temperature is high, which reduces its adjustable output. As a result, it not only aggravates other problems. The pressure of peak shaving and frequency modulation plants also causes serious low-frequency fluctuations in the system during peak loads; and serious high-frequency fluctuations occur during low load periods at night. This phenomenon is customarily called reverse peak shaving in dispatching terminology.
The anti-peak shaving characteristics of wind power increase the difficulty of power grid peak shaving, increase the pressure on power grid frequency regulation and the frequency of conventional power supply adjustments.
Insufficient peak shaving capacity will lead to wind curtailment during low load periods.
What about the Yichuan wind power project in Henan?
Faced with difficult natural conditions, the owner of the wind power project, Huaneng Group, made many attempts. In the early stages of wind farm construction, the The project initially planned to use crawler cranes for wind turbine hoisting. This technology is mature, widely used, stable, and widely used in wind farm hoisting. However, the hoisting height of wind turbines in wind farms is as high as 130 meters, which also means that the crane needs to exceed 160 meters of space, the terrain conditions of most wind farms cannot meet this requirement.
With the cooperation between Huaneng and Envision, the aerial assembly hoisting method was finally adoptedA total of more than 10 parts of the 140-meter-long boom of the crane were moved to 20-30 meters above the ground. position and suspended for assembly, so that hoisting can be achieved and the project area can be reduced as much as possible. It is understood that such a large-scale use of aerial work robotic arm lifting solutions is still the first in the domestic mountainous lifting industry. Not only that, because the topography of each wind turbine location in the area is different, the long-term project staff also developed a separate and strict implementation plan for the hoisting of each wind turbine, ultimately achieving the hoisting of more than 70 overhead cranes.
The "one machine, one box" method was used on site to solve the difficultyThe hoisting construction of China's largest mountainous tower wind turbine set a record When the hoisting plan was first studied, a It took more than half a month to hoist the wind turbine, which took the longest time. As the construction plan continued to improve, the final construction phase was the fastest to strictly ensure safety and maintain the forest ecology. The wind turbine hoisting only took 5 days. Completed, normal hoisting time was shortened to 7 days, and hoisting costs in mountainous areas were greatly reduced.
Judging from the current development situation, considering the complex geographical conditions and arduous construction process, the development of wind power, from the perspective of the owners themselves, in order to reduce costs when wind energy resources are limited, , it may be necessary to choose higher capacity models and use taller towers, more efforts have been made in the form of tubes and longer blades, while due to this year's "peak installation period"As a result, the price of hoisting is too high. In the future, the development of wind power in mountainous areas should also avoid peak periods to reduce construction and other costs.This will also help to achieve an increase in wind power prices as soon as possible in low wind speed areas. Accelerate the development of mountainous areas, such as the old revolutionary base areas in Yan'an, Shaanxi.
Okay.
1. The Henan Yichuan wind power project can share part of the pressure from traditional power generation methods such as coal-fired power generation, which will inevitably alleviate the pressure on power consumption during peak hours, thereby reducing the possibility of power outages in residential areas.
2. The main energy source of wind power generation is wind. It is inexhaustible and will not cause public hazards or pollution to the natural world. It is a new energy source that is very suitable for use according to local conditions. . The construction of wind power projects in Yichuan, Henan has increased the diversification of national energy production with good environmental benefits.