How does wind power store energy?

Developing energy storage can be said to be the only way to realize double carbon. Energy storage is the process of storing energy so that it can be released for use when needed. In order to achieve the goal of "30 60" carbon dioxide emission peak and carbon neutrality, China decided to gradually establish a new power system based on new energy. In recent years, China's renewable energy power generation has developed rapidly, and the installed capacity has increased from 27.7% of 20 1 1 to 45.4% of 202 1. According to the goal of the National Energy Administration, by 2025, the installed capacity of new energy in China will further increase to more than 50%, and the status of new energy power generation will become more and more important.

On the one hand, the peak shaving and valley filling of renewable energy power generation can be realized by configuring energy storage, that is, the power in the peak period of wind and light power generation is stored and then moved to the peak period of power consumption, so as to reduce the rate of abandoning wind and light; On the other hand, the energy storage system can smoothly control the random, intermittent and fluctuating renewable energy power generation output, reduce the fluctuation from the source, meet the requirements of renewable energy grid connection, and lay a good foundation for large-scale development and application in the future.

Then the application scenarios of energy storage also include power grid side and user side. With the increasing demand for power grid flexibility and the gradual rationalization of business model, it will also jointly promote the large-scale development of energy storage. In terms of power grid, energy storage power stations are mainly used to provide auxiliary services in the power market, such as system frequency modulation. Because the change of power grid frequency will affect the safe and efficient operation and life of power equipment, energy storage, especially electrochemical energy storage, has high frequency modulation efficiency and can play an important role in power grid side. In addition to providing auxiliary services, energy storage equipment can also alleviate power grid congestion and improve power grid transmission and distribution capacity, thus delaying equipment upgrading and expansion.

Smart wind power generation solution

In order to realize centralized control of wind power generation, improve the digitalization and intelligence level of user enterprises and realize data visualization management, it has become a new mainstream trend to create a set of three-dimensional visualization centralized management modules suitable for new energy. Hightopo realizes interactive network wind power digital dual 3D scene. It can switch between day, night, sunny day, cloudy day and rainy day according to the interface of time and weather, showing a space-time state consistent with the real world.

1, monitoring of booster station

Wind farm booster station refers to the facility that raises the output voltage of wind turbine to a higher level and sends it out. Because most wind turbines are asynchronous generators, wind farms will absorb reactive power while emitting active power, and most wind turbines cannot continuously and effectively adjust active and reactive power. If the corresponding control measures are not taken, it may affect the reactive power and voltage stability of the power grid, or increase the network loss of the power grid.

In order to solve the problem of voltage stability of transmission system caused by large-scale wind farms connected to the grid, static var generator (SVG) and shunt capacitor banks are generally used for reactive power compensation in the gathering and boosting stations of wind farms. Click the three-dimensional model of the booster station to jump to the perspective view of the booster station, and display the main observation data in the station, such as environmental information, load statistics, wind power forecast, fire inspection information, inspection vehicle information, etc.

2. Environmental Information Center

The environmental information monitoring of booster station in digital twin 3D visualization system of Tupu software mainly integrates the data of weather, average temperature, main wind direction and average wind speed of the whole wind power base, which is convenient for controlling the environmental information of wind farm.

3. Wind forecasting

Using the rich visual chart components of graphic software, the overall real-time power and predicted power of wind power base are displayed in hyperbolic form, which is convenient for managers to make decision analysis at any time and effectively save energy and reduce emissions.

4. Transformer room

Click on the 3D building model of the transformer room in the booster station of Hightopo smart wind power supervision platform, and jump to the inside of the transformer room. The main scene adopts realistic style to restore the internal layout of the power distribution room. Click the corresponding transformer cabinet to display the measurement and control data of different main transformers.

5, production monitoring

The wind volume of wind turbines is unstable, and its ability to support power system operation is not as good as that of other power generation fields. The monitoring data of wind power base facilities need to be more timely. Focus the key production data of wind farm on the left and right sides of the interface to provide managers with intuitive data display and timely control.

The three-dimensional visualization technology of Tupu software adopts B/S architecture, and the page can adapt to various resolutions. Users can access the 3D visualization system anytime and anywhere through PC, PAD or smart phone to realize remote monitoring.

Using the visual scene of graphic software, the real-time operation parameters of intelligent equipment are connected to 2D panels on both sides, and complex and abstract data such as project overview, real-time indicators, unit status, environmental parameters, power generation statistics, energy saving and emission reduction are displayed with rich charts, graphs and design elements, so as to realize centralized management and control. Through the fusion analysis of historical data, managers can realize the optimal allocation of resources and build an intelligent wind power management system.

6. Real-time indicator

The total wind load of the whole wind farm can be observed in real time through the HT 2D panel of graphic software, and the event decision and treatment can be made in time from the "early warning treatment rate of fans" and "number of untreated fans".

7. Environmental parameters

The change of wind speed and direction has great influence on the power generation of large wind turbines. Environmental monitoring system can access the visual scene of map software, complete the real-time monitoring of visibility, precipitation, wind speed and temperature, and take countermeasures before the arrival of bad weather.

8. Power generation statistics

Power generation is the most concerned data of the production monitoring module manager, and the panel displays the current power generation, current power generation and accumulated power generation; The daily power generation ranking of all fans is displayed in the form of histogram.

9. Energy conservation and emission reduction

Through the visualization system of graphic software, the emission data of nitrogen oxides in wind power base can be monitored and counted remotely, and the optimal scheme of energy saving and emission reduction can be realized according to law.

10, unit status quantity

The diversified chart forms of graphic software are used to display the number of fans that generate electricity normally, generate electricity in spite of illness, stand by, self-limit electricity, planned shutdown and communication interruption, so as to obtain the running status of the whole fan in real time.

In the short term, policy is the main driving force to promote the development of energy storage installed capacity in China, and the improvement of institutional economy can open up the space for large-scale development in the medium and long term. Therefore, with the gradual improvement of the market mechanism. The turning point of energy storage system economy is also "drifting away".

The ability of new energy to provide power guarantee for a long time is poor, and the forecast of new energy power still deviates from the actual results because of the rolling update of meteorological data. The large-scale access of new energy makes the existing conventional power supply and pumping and storage regulation capacity exhausted, and the balance mode of "source moves with load" is unsustainable. The ability of system balance adjustment needs to be improved urgently, and it is necessary to speed up the construction of a new type of power system with "source-network-load-energy storage" interaction.