At present, it is internationally recognized that more than 80% of the world’s carbon dioxide and other greenhouse gas emissions come from the use of fossil energy. As the country with the highest total carbon dioxide emissions in the world, my country’s power industry emissions account for as high as 41%. In the case of rapid economic development in the country , the pressure of carbon emissions is increasing day by day. Therefore, getting rid of dependence on fossil energy, vigorously developing new energy, and promoting clean, low-carbon and efficient use of energy are of great significance to the realization of my country’s carbon peak carbon neutrality goal. In 2022, my country’s new installed capacity of wind power and photovoltaic power generation will exceed 100 million kilowatts for the third consecutive year, reaching 125 million kilowatts, accounting for 82.2% of the newly installed capacity of renewable energy, hitting a record high, and has become the main body of my country’s new installed capacity of electric power . The annual wind power and photovoltaic power generation exceeded 1 trillion kWh for the first time, reaching 1.19 trillion kWh, a year-on-year increase of 21%.
However, wind power and photovoltaic power generation are highly dependent on weather conditions, have the characteristics of instability and volatility, and cannot match the changes in user-side demand, making the load peak-valley difference in the grid increasingly serious, and the source-to-load balance model is unsustainable. The ability to balance and adjust the power grid system needs to be improved urgently. Therefore, through the application of energy storage system combined with intermittent renewable energy such as wind power and photovoltaics, relying on the coordination and interaction of source, network, load and storage, to improve the utilization efficiency of clean energy, give full play to the capacity of load side regulation, and break the low-carbon and clean energy field. , Sufficient supply, and low cost cannot be both deadlocked, which has become an important development direction in the field of new energy.
With the continuous increase of the proportion of wind power and photovoltaic power generation capacity in the power system, the centralized access of large-scale random and unpredictable power makes the problems of power balance and stability control of the power grid increasingly complex, and the security of the power system Running is a huge challenge. The integration of energy storage technology with fast response capability can effectively realize the power and energy balance of the power system under various working conditions, thereby ensuring the safe and economical operation of the power grid and improving the utilization efficiency of wind power and photovoltaic power generation.
Post time: May-30-2023
