(201e) Energy Storage for the Enhancement of Penetration Level of Wind Energy: A Case Study

In the past five years, wind energy increases significantly in China. In terms of the equipped capacity of wind turbine, China serves as the top country in the world. However, serious problems occur due to the connection of the wind energy with the electrical grid. For example, the fluctuation nature of the wind energy causes significant instabilities in the grid, leading to the rejection of the wind energy. In some local area of China, the rejection rate of the wind energy could reach 40% or even more. To solve this dilemma, it is quite necessary to develop the energy storage facilities (in terms of both large-scale and small-scale capacities). In the present paper, effects of the energy storage on the penetration level of wind energy are investigated based on the wind farms in the western parts of the Inner Mongolia province of China. The detailed analysis are given based on the quantitative data obtained from the government and industries. The importance of the energy storage are categorized into several groups and several emerging trends are briefly discussed.